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Siphon water-type tests of the transition power plant units

Surface area (m)} - runner outlet off Shai plot (m.) - Pipe length (m) '- pipe inclination. (3) can be rewritten as Fsider · ... A √ RdH = df (4)-type points on both sides have aFji: Li (l cream: a unitary 『_ _1)) (5), H. . , H - T start and the end of computation time when the working turbine head (m) j - calculated time interval, that is, when the head fell from the remainder of Ht a request emptying time (s), generally the flight crew to exit Yat's duration. Kwame: D siaa '~ ~ A \investigation to take on the curve. (6) into (5) have (6) (ms / s), by the unitary characteristics of turbine runaway = I (7) (7) into (2),[link widoczny dla zalogowanych], so that Ht one. = H, m = 1.1H, well after the appropriate transformation,[link widoczny dla zalogowanych], speech units can be transferred out runaway Yat each time T a second:,[link widoczny dla zalogowanych]! Guangdong!! (8) ... a-i one hundred and eleven,[link widoczny dla zalogowanych],, n where H - hydraulic conductivity under the machine when opening a certain stability Yat rpm for the turbine is head (m) J - turbine rated speed r / mia. 3. PL guillotine operator station is a single diversion siphon tube station, corner 16. Water main technical data for twisting machine turbine model HL1Io-L】 rated output of a 1oo design head of 127 131 calculated 43d8kW: base length of penstock 465m,[link widoczny dla zalogowanych], diameter of 1.2m, the design flow tube axis tilt 4.02m. / S rated speed 750r/min by the Qk0.354ms / s, B, = 63r/mln, check HLl10 runner curve was integrated platform Ⅱ. = 33.0mm, the n. Search HLI10 runaway characteristic curve was; tB99.5/rain 'K: QjRD: siac ~ / 2F = O. 22 × I × O. 28 / 2 ~ × O. 8O. 0273 Fourth Chen Qiqiu siphon water type power unit 7I Experimental Research maggot calculated transition process exit time of 71 transfer runaway Yat a ■ ... 1. ] ... 5n-nD a K / R for a 115 × 75O ×] 199.5 ~ a = ... ... 02 A --= 95s <120s we can see from the calculation of the Turbine House before the no import, as long as the siphon rapidly interrupted, the unit Yi transfer time does not exceed two minutes. IV Conclusion Siphon-tube water power station, when a long penstock, turbine when the fork is not set import Yan, according to the simple formula is derived to verify the load rejection, the governor failure, can not guide the water leaves Yat turn off when the time is over when the factory warranty runaway http servers where Yi is the unit turn out when the runaway of when you hear that from a guide vane opening under the water, the maximum runaway speed down to I15 volumes rated speed when the transfer took Yat; and manufacturers falsely accused of flying over the time Paul refers to the maximum runaway speed, to ensure unit does not occur the other harmful components runaway deformation time. Constant speed over a long time suddenly turn, can also cause fatigue damage to the unit and other parts of potential accidents, so the length of the electrical steel anvil pressure to check the above calculation is absolutely necessary. Of course, the lower limit of the calculation can still be further considered, not necessarily confined to the I15 ogle the rated speed. Vacuum siphon more than the use of electric butterfly valve damage threshold, and its full-time, generally up to more than ten seconds, far from ideal. Suitable for direct opening and closing electromagnetic castrated, fully open the valve is almost instantaneous. But there are small diameter, the amount can not meet the requirements of qi. In order to siphon quickly interrupted after the load rejection, the future should seek to improve the siphon vacuum breaker valve and its automatic control system reliability and speed and mobility, is to ensure that no imports of news-style single-tube siphon water out runaway power plant units of the key technologies quickly problems, has yet to be studied further. (Continued from page 74) VI Conclusions 1. Copper Street sub-station access system, the network structure more closely, to improve the level of transient stability and power overload capability, protection devices correct action is particularly important, so every time line configuration of the commercial relay protection sets of wire speed solution is correct 2. Tongjiezi 220kV system protection equipment selection, knot sets the characteristics of actinide Street sub-station, only to consider the security barrier, reliable, fast, sensitive, fork, and taking into account economic feasibility of adoption of new technology bundle by careful analysis comparison, his mother and nephew of road to determine the transistor \, Bypass in labor, the only transceiver transmitter cut to bypass the way, a satisfactory solution to the bypass line relay protection and the \ More articles related to topics：

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