Water pump parallel machine set operation mechanism and control strategy simulation test device

Abstract

The invention discloses a simulation test device for researching water pump parallel machine set operation mechanism and control strategy. A water circulation loop is composed of a pool, a submerged pump, a flow meter, a water inlet tank, a parallel water pump machine set, a valve, a pipeline, an automatic regulating valve, a high cistern and the like; the simulation test device is provided with measure and control instruments, such as a pressure transducer, a toque-revolution speed transducer, a transducer, a virtual instrument, an electric control loop and the like. The invention is characterized in that the water inlet tank is arranged between the big pool and the parallel water pump machine set; water amount to the water inlet tank is simulated by controlling the revolution speed of a submerged pump in the pool; water consumption law is simulated with the method that the automatic regulating valve and the transducer provide two modes of throttling and speed change; the combination characteristics, pump characteristics, device characteristics, power characteristics of shafts with different revolution speeds and the like of the water pump machine set can be measured by virtual instrument technology; and the simulation test is performed to different scheduling models and operation control strategies so as to detect and compare the performance and energy saving effects of different models.

Description

technical field [0001] The invention relates to a hydraulic mechanical simulation test device, in particular to a water pump parallel unit operation mechanism and control strategy simulation test device, which is used to study the operation mechanism and energy-saving strategy of the water pump parallel unit. Background technique [0002] The power consumption of water pumps in my country accounts for 20.9% of the country's electricity consumption. Most of the industrial circulating water and urban drainage pumping stations are operated in parallel units. If the combination or configuration is unreasonable, or the operation mode is improper, the energy consumption of the water pump unit will be wasted by more than 20%. Therefore, it is necessary to conduct research on the operation mechanism and energy-saving strategy of the water pump parallel unit. [0003] The open or closed standard test device specified in the existing national standard GB / T 3216-2005 "Hydraulic Performa...

AI Technical Summary

Problems solved by technology

However, there is no regulating valve between the high-level water tank and the low-level water tank, and the different changing laws of the incoming water cannot be simulated during the test.

It is possible to simply simulate the change of water demand in the throttling operation mode by manually adjusting the valve, but since the valve used is not an automatic adjustment device and has no analog signal generator, it cannot simulate complex and continuous changes; Simulate the law of water use, neither the specification nor the claims describe in detail

[0005] Therefore, the existing device can only simply test the performance or speed regulation performance of the water pump or the water pump unit itself, and cannot simulate the operation status of the water pump or the water pump unit when the water flow or water demand changes complexly, and cannot optimize the scheduling model, control model and Experimental research on energy saving strategies

Images