IDEA #97UUUT New Piezoelectric Valve With High Accuracy And Small Response Time For Work In Real-Tim

THE SCIENCE AND TECHNOLOGY CENTER IN UKRAINE NEW PIEZOELECTRIC VALVE WITH HIGH ACCURACY AND SMALL RESPONSE TIME FOR WORK IN REAL-TIM Description A motorized control valve is developed to regulate any kinds of liquids, steam, gas or vacuum streams. It can be used in energy industry, chemical industry, food industry etc. At the basis of the piezoelectric control valve is a spe­ cial piezoelectric mechanism which, on one hand, allows very fast action (analogous to the cut-off valve), and on the other hand, it allows very precise control (analogous to the controller valve). At the present time these two valves work separately complementing each other. Our single valve can replace either one of them, or both. The suggest­ ed piezoelectric valve is intended for using simultaneously as a fast valve with working time less than one second (open up to 900), as well as a precise valve with high angu­ lar resolution (minimum angular increment ~ 1 arc-sec, response time ~ 50μβ). In case a piezoelectric valve is jammed, the piezoelectric mechanism, unlike an ordinary electric motor, will not burn itself out. The piezoelectric valve, unlike an ordinary motor, also generates no sparks. Innovative Aspect and Main Advantages Generally, a control valve comprises three primary compo­ nents: a valve, (such as a ball valve,) a DC motor and a con­ trol circuit (see control valves manufactured by companies such as Siemens, Johnson Controls, Sauter, Danfoss, Belimo, Joventa). Such control valves are characterized by low speed (duration of "closed-open" mode ranges from 30 to 140 seconds ), low resolution (1-5 angular degrees), a response time of 1-2 seconds, high weight (1-2 kilograms) and high cost ( $ 400 - for a valve with resolution 1-5 ang. degrees; $1000 for a valve with 0.2-1.0 angular degree res­ olution). The suggested valve will be an inexpensive noise­ less piezoelectric valve with high speed (duration "closed- open" mode less than 1 second ), high resolution (less than 1/3600 angular degree or 1 arc-sec), rapid response time (1/20000 second or 50μβ), and low weight (50-300g with­ out the ball ) - all in one product. Technical data for computerized piezoelectric ball valve (fig. 1) for a 1/2 " (half-inch) pipe Working time (duration "closed-open" mode, angular range 0°-90° ) Angular resolution (min. angular increment) Response time Weight (with the 1/2" valve) Voltage Maximum Power Consumption (duration of the working time) Areas of Application Such a valve will find use in all systems in the world, which contain tubes: steam heating, water pipelines, gas pipelines, oil pipelines, power reactors, chemical reac- 1 arc-sec 50 μβ 250g 12V < 0.5 s 4-6 W Fig. 1. Computerized piezoelectric ball valve for a 1/2" Different schemes of piezoelectric valves Fig. 2. Single direction con- pig. 3. Reverse direction con­ trol valve trol valve tors,power motors, vacuum systems, etc. The Piezoelectric valve will enable development of a new generation of power systems (engines of internal combustion, turbojets, steam and gas generators, nuclear reactors), various hydraulic systems with small response times and with high control accuracy. Thus, "thermo-gas- hydraulic" systems working in real time, with speed approaching that of elec­ tronic systems, can be developed. In addition to the broad­ er industrial uses described above, the piezoelectric valve offers significant commercial potential at an individual household level, by reducing the risk of spark and explo­ sion. Stage of Development LILEYAs unique designs is being patented : - in United States (U.S. Serial No 11/406,335) - in the World ( PCT/UA2006/000067 ) - in Ukraine ( Application Serial N 2006 11804) LILEYA builds valves with superior high performance characteristics and it can produce 1000-10000 valves in years now, larger production possible. Contact Details Contact person: Dr. Sc. Sergii Petrenko Small Scientific Production Enterprise LILEYA Ltd. Kiev-03150, Tel/Fax: (380-44) 502-1376 Mob.: 8(067) 918-32-68 tyll@naverex.kiev.ua, www.piezomotor.com.ua Predslavinskaya 511 39, off.