2 have dynamic equilibrium function: the function of dynamic equilibrium refers to accordance with the requirements of terminal facilities load change electric regulator bravery to an opening, no matter how the system pressure, the valve can be dynamically balanced system resistance, make its flow is not affected by the system pressure flap and maintain fixed eternal. Then the dynamic flow balance valve and electric control valve can replace the dynamic balance of electric control valve, bottom is equipped with the function of the layout for the two special properties is analyzed and compared. But because the dynamic equilibrium of electric valve dynamic equilibrium function ( Dynamic balancing valve core PV1 differential utility) Electric control Industrial Valves, the valve core 2 A1, B1 point of differential pressure does not change, because the air disposal machine a loop flow remain unchanged, refrigerating capacity unchanged, a corresponding region is still at the equilibrium conditions ( Figure 2 for the dynamic balance of electric control valve dynamic equilibrium curve) 。 Dynamic equilibrium of the body structure of electric control valves for special alone, in the practical engineering application of the basic right of valve of 1, because of this, in fact, the international of the special nature of the flow curves and the ideal of the special nature of the flow curves are exactly the same, did not leave the path, because the good electric regulating function. For ordinary electric regulator, however, in actual use rights of the process for valve is lesser, have the nature of the actual traffic special curve stray ideal flow especially the nature of the curve. Q: dynamic equilibrium of electric control valve is suitable for use scope and performance analysis of answer: so far as many people living standard static energy-saving awareness growing, variable flow system in hvac engineering occupation is more and more tight position, at the same time, a new type of Marine valve hydrodynamic system - Various aspects balanced hydrodynamic system also more and more widely used in hvac engineering. For multiple loop system, no matter what a loop adjustment will not to interfere with other loop initiation, at the same time, no matter what a loop will not suffer the influence of the other loop adjustment, the larger the system, the dynamic equilibrium of the special nature of the more superficial, each loop by myself only by the regional load fluctuation, the influence of and not affected by the system pressure flap, because this is easy to achieve and maintain a balanced status. Assumed conditions in summer, region a modulated to equilibrium conditions, namely purpose regional temperature T1 has reliable at 25 ℃, then the dynamic equilibrium of electric valve opening remain in a position to maintain unchanged to the output a eternal fixed flow. Region 2 is still in the uncertain situation, survey of return air temperature T2 is 24 ℃, lower than the set temperature 27 ℃, the survey will temperature and set temperature in the stem device, the output signal to the dynamic equilibrium of electric valve down to detract from cold water flows through the air disposal machine two, refrigerating capacity detracted from at this moment, make the T2 elevated temperature survey, close to the set temperature; To be at the same time, system pressure difference of the two point C and D will increase, the disposal of a loop dynamic balancing machine electric air valve DV1 2 C, B1 2 point of differential pressure also increases accordingly. Electric adjustment function is good or bad reputation is the nature of the flow of electric control valve special curve. By visible, air treatment of the adjustment of the second ring road not to have a balanced air disposal machine a loop initiation interference, because this does not exist between the two loop dynamic hydrodynamic disorders. In the air conditioning system, commonly used electric regulator ideal special nature of the discharge curve is a straight line or a percentage, etc. So far in a little air conditioning project, a preset positions of people to achieve the same function, in the default selected with the combination of the dynamic flow balance valve and electric control valve system to replace the dynamic balance of electric control valve, and claims that these two equipped with have the same function. Suitable for use scope of urban construction, chemical industry, smelting metal, fuel, pharmaceutical, food, beverage, environmental dynamic balance of electric control valve performance analyze the dynamic balance of electric control valve is difference with the traditional electric control valve of a new generation of products, product of the integration of dynamic equilibrium and electric adjustment is, it has the following unique place: 1 has good electric adjustment function: electric regulating function refers to the valve stem can according to the objective region temperature signal changes in the semi-automatic adjust the opening of the valve, so the flow of water, finally make the purpose of exactly the same as the actual temperature and set temperature region. As shown in figure 3, the flow of an electric regulating valve ideal special nature of the curve is linear ( Curve 1) After installation to the system a management way, but the nature of the actual traffic special curve near the quick opening type ( Curve 2) , adjust the special nature of variation. Various aspects of balanced hydrodynamic system common facilities (through the end of a dynamic balance of electric control valve adjustment Such as air conditioning box) Flow to regulate the temperature of a regional control purposes, it consciously positive state of equilibrium system of pressure change, make two or more flow control between the terminal facilities do not interfere with each other, because that this system has high efficiency and energy saving.
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