Study Of Application About Balance Device In Closed Water Cycle System

With the development of technology and market economy as well as the improvement of standard of living, The mankind's demand become higher and higher to the effect of establishment of heating and air-conditioning, the energy conservation and the safety operating of the system, the traditional valve device has been already unable to guarantee the demand. That is the background of balance valve and automatic valves been produced.Aimed the balance valve and automatic valves haven't been arise no long time, and haven't been research deeply and systemically, The paper studied the performance the kind of the valve, the condition to apply and method of the type selection in theory and in experiment, those should be know urgently . The main conclusions of the essay have been shown as follows.Much inherent performance experiment about SP series balance valve has been done, based on experiment data: â‘ The curve of SP balance valve was drawn, which is propitious to engineering. â‘¡A uniform formula included parameters such as regulate degree, flux, pressure difference were simulated. â‘¢ the direction of performance to improve was point out. At the same time, compared and analyzed the several type selection methods about balance valve which were appear in references, commended a kind of reasonable selection means.Performance experiments about ZY47 pressure -difference control valve and ZL47 flux control valve have been done, based on their structure and work principle, presented the method of type selection. At the same time, pointed out the application condition in engineering via the theory analysis.Studied the cooperation of balance valve, automatic control valve, electric valve and temperature -control valve, presented their cooperation -application principle.Combining the engineering fact, pointed out the situation and the problem that self pressure -difference control valve can be applied to or can solved. With regard to flux control and check valve, based on its structure and work principle, presented the method of type selection.