Closed electric commutator

Abstract

The invention provides a closed electric commutator, which comprises a bottom plate, a shell, a shunting nozzle, a guide bucket with an inverted Y-shaped structure and a motor, wherein the motor is electrically connected with an external PLC; the shell is inverted Y-shaped, is provided with an inlet head cover and two outlet runners, passes through the bottom plate and then is fixedly supported onthe bottom plate through corner fittings at the waist of the shell; the guide bucket is suspended in the shell through a rotating shaft which is vertically connected to the front side surface and therear side surface and penetrates through the shell; a partition plate used for separating two outlets is vertically arranged at the middle part of the guide bucket; each outlet corresponds to one outlet runner; the shunting nozzle passes through the inlet head cover in a centered manner, the outlet of the shunting nozzle extends into the guide bucket and a clearance is formed between the outlet and the top end of the partition plate; and the motor is fixedly arranged on the bottom plate at the front side of the shell and is connected with the rotating shaft through a coupling. The motor is controlled to drive the guide bucket to rotate through the PLC, the action is stable and reliable, the commutation noise and vibration of the commutator are effectively reduced, fluid is few in splashesand small in flow fluctuation when passing through the inverted Y-shaped structure which is dynamic inside and static outside, and the uncertainty is also reduced.

Description

technical field [0001] The invention belongs to the technical field of liquid flow measurement, and in particular relates to a closed electric commutator with stable and reliable control, small uncertainty, uniform fluid distribution, three photoelectric positioning and fast commutation time. Background technique [0002] Flow metering is an important part of measurement technology. Flow measurement technology plays a very important role in energy measurement, trade settlement, process control, environmental protection and so on. In recent years, with the implementation of the national sustainable development strategy, energy conservation and emission reduction, environmental protection, resource utilization and other fields have put forward higher requirements for flow measurement technology. It has become an important task for scientific researchers to explore flow measurement technology that can adapt to different working conditions and improve the accuracy of flow measu...

AI Technical Summary

Problems solved by technology

[0006] At present, most of the traditional commutators are open commutators, which are difficult to apply in volatile liquid devices, and mainly use compressed gas as the power source to control the reversing mechanism to reciprocate left and right to drive the liquid flow direction to change. During the verification time, the detection fluid can be exchanged and circulated from the pipeline to the container and the water storage tank quickly, fully and accurately, which will directly affect the uncertainty of the flow measurement results, thus directly affecting the verification results

Since the gas pressure acting on the reversing mechanism is a non-constant pressure, there is acceleration and hysteresis in the action of the reversing mechanism, which affects the results of flow measurement; at the same time, in order to obtain faster reversing time and smaller The reversing stroke time difference of the reversing mechanism often bears a large force, which causes a large vibration to the commutator as a whole, and affects the measurement uncertainty and service life

Images