Control method of achieving automatic constant pressure of water pump by sensing current load

Abstract

The invention relates to a control method of achieving an automatic constant pressure of a water pump by sensing a current load. The control method can control a water pump motor to carry out a seriesof operations such as supplying water in an accelerated manner, supplying water in a decelerated manner, starting to work or stopping work and the like without mechanical parts such as a water flow switch, a pressure switch, a pressure sensor and a pressure tank, so that a problem that the service life of the water pump deice is lowered as a result of corrosion as the water pump device composed of the mechanical parts such as the water flow switch, the pressure switch, the pressure sensor and the pressure tank is in direct contact with acid and alkali-containing water to be corroded easily issolved. In addition, according to the water pump operated by means of the control method, no people take part in debugging the water pump in the whole course, so that the problem that the water pumpis controlled to operate normally after manual debugging and setting parameters as a conventional water pump device is affected by different factors such as difference of power supply voltages in different areas, the actual lift which is used, water consuming equipment conditions and the like is solved effectively. The water pump device is more convenient to use.

Description

technical field [0001] The invention relates to a control method for realizing automatic constant pressure of a water pump by detecting current load. Background technique [0002] The traditional water pump is assembled by mechanical parts such as water flow switch, pressure switch, pressure sensor and pressure tank. Since the service life of these mechanical parts is related to the water containing acid and alkali, when the water flow switch, pressure switch, pressure sensor and pressure When parts such as tanks are directly exposed to water containing acid and alkali, they are prone to corrosion problems, which will affect the service life of these mechanical components. At the same time, because the power supply voltage, the actual head used and the conditions of the water equipment are different in each local area, the previous water pumps need to be manually debugged and set their operating parameters to correctly control the operation of the water pumps, resulting in t...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a control method for detecting the current load to realize the automatic constant pressure of the water pump, which can control the water pump motor for accelerated water supply without using mechanical components such as water flow switches, pressure switches, pressure sensors, and pressure tanks. , decelerate water supply, start work or stop work, etc., to avoid the problem that the water pump device composed of mechanical components such as water flow switch, pressure switch, pressure sensor and pressure tank is prone to corrosion due to direct contact with acid and alkali water , and then reduce the service life of the pump device due to corrosion problems, and the water pump controlled by this method does not need to be manually debugged in the whole process, which effectively solves the traditional water pump device. Due to the influence of different factors such as water equipment conditions, it requires manual debugging and manual setting of parameters to correctly control the normal operation of the water pump. It is more convenient and faster to use.

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