Water production control method, water production control device and ultra-pure water preparation system based on electric ball valves adjustment

Abstract

The invention discloses a water production control method, a water production control device and an ultra-pure water preparation system based on electric ball valves adjustment. The method comprises an initialization step, an open / close control step, a pressure difference calibration step, and a linkage adjustment step. In the initialization step, concentrated water side discharge electric ball valve and return electric ball valve unit open and close degrees at full open and full close of the concentrated water side discharge electric ball valve and return electric ball valve are detected. In the open / close control step, the open and close of the concentrated water side discharge electric ball valve and return electric ball valve are controlled according to the unit open and close degrees; real-time open and close degrees are recorded; and the real-time and unit open and close degrees are corrected according to the detection signal feedback. In the pressure difference calibration step, the pressure difference between reverse osmosis membrane water inlet side and concentrated water side when the concentrated water side of the reverse osmosis membrane reaches a target flow rate is obtained through adjusting the concentrated water side discharge electric ball valve and return electric ball valve open and close degrees, and is adopted as a target pressure difference. In the linkage adjustment step, through adjusting a high-pressure pump and the concentrated water side discharge and return electric ball valve open and close degrees, the target pressure difference and the target flow rate are achieved. With the method, the device and the system provided by the invention, cost is reduced, and control precision is improved.

Description

technical field [0001] The invention relates to the technical field of ultrapure water preparation for medical use, in particular to a water production control method based on electric ball valve adjustment, a water production control device, and an ultrapure water preparation system with the water production control device. Background technique [0002] The ultrapure water preparation system for hemodialysis (referred to as the ultrapure water preparation system in this manual) needs to control the reverse osmosis membrane inlet side pressure and the reverse osmosis membrane concentrated water side flow and pressure to achieve the best use of the reverse osmosis membrane. state, to ensure the quality of ultrapure water for hemodialysis, and to improve the service life of the reverse osmosis membrane. [0003] The existing ultrapure water preparation system uses a manual ball valve on the concentrated water side of the reverse osmosis membrane to control the opening of each ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a water production control method to solve the technical problem that the ultrapure water preparation system in the prior art cannot balance cost reduction and control precision improvement

[0008] Another object of the present invention is to provide a water production control device to solve the technical problem that the ultrapure water preparation system in the prior art cannot balance cost reduction and control accuracy improvement

Images