uggs ireland Deaerator water film heat transformat

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Deaerator water membrane transformation of heat

Inclined at an angle. If the angle is too large, side water formation in the spiral tube is relatively short trip, after the spread angle of a side jet is relatively small, particularly in the Received Date: 07 plus a Q5 ∞ of a dielectric cylinder: Zhuang Yuping (1970 a) , F, Heilongjiang dark Seoul Huang, Hal Huang - 0 c Institute of Engineers Seventh Thermal Power Comparison of 2001 hours of low load pressure, water film can not affect the formation of an oxygen umbrella effect. If the angle is too small, although the rotation effect of water is better, but the hole in the water pressure increases on both sides. Water from the upper emerge from the membrane. After several test analysis, nozzle down dip strong that ~ l is more appropriate. This will ensure that the water film at low load, a larger umbrella spread angle, the overlap between adjacent water film, but also to ensure that high pressure in the upper part of the time when membrane does not take water. (2) the steam chamber from the membrane jet hole diameter, hole number and determined the amount of exhaust steam jet speed is the key to the design from the membrane. Proved by the hot test: faster than the best value jet damaged when the water film, the basic elements of oxygen lost water film, while the speed is too small does not help once the water oxygen mass transfer, heat transfer. (3) conventional heating water film oxygen secondary structure or the system with water spray angle for uniform water droplets cascade components,[link widoczny dla zalogowanych], in order to increase the contact area of water droplets and steam. Extension of water droplets and vapor contact time, lower and with added / 100-0.1 × 04 flat screen as a filler. According to the operation and maintenance of on-site survey conducted analysis showed that watering during the installation of the gate difficult to maintain the absolute level, so that the first drop in the oxygen flow cross-section of uniform, easy to drift and the effects of oxygen. Flat screen While the advantages of large contact area, but the installation of high quality requirements, and the current flat screen made of material life is shorter. As in the operation of the deaerator vibration, the main heating steam rose has a certain velocity,[link widoczny dla zalogowanych], flat screen so often happens in the run-time fractured. Deviation of the heating steam and even short screen, affecting the normal heat transfer. After breaking the screen there may be sinking into the water tank into the pump causing serious consequences. 4, the transformation of the water film deaerator measures in Figure 4 (1) To ensure the nozzle of sufficient length to facilitate the rotation of water film, straight from the membrane with a 0108 × 5 5 diameter thick-walled tube. The test proved that from the membrane from the membrane opening position and length of relationship in a certain proportion of fat to be effective only when the anti-Water to take water. To prevent low-load operation deaerator water film diffusion angle decreases and the lower end of the membrane made from the 30 'cone angle of the water film guide, shown in Figure 4. We tested 05 of the hole to determine the relationship between the flow and pressure curves, shown in Figure 5. Trials showed that when water pressure P ≤ 0.12MPa, select h / H ≥ 40%, preferably 05 to take water hole diameter (pore size and pore number and the relevant output deaerator). (2) membrane from the steam nozzle on a water heated on a significant role, requiring rapid steam mixed with water. If the steam amount of traffic, the flow rate is too high will damage the water film. Therefore requested the steam chamber and the steam nozzle arrangement of uniform flow rate should not be too high. The test analysis,[link widoczny dla zalogowanych], the amount of steam in the steam chamber to heat the steam increases the amount of the total 12% 18% is appropriate. 1200l0 groan Bodhisattva flail 200 Zhang 10.203MPI (3) use uniform grid angle with water spray orifice, pore size 8 a 12mill. Arranged on the plate number required above the orifice of about 24O Ⅱ I Ⅱ I used to isolate the vapor cap soda channel. (4) flat screen by the \We believe that selecting the diameter of the water film deaerator plus 025 m, wall thickness o. 8Dim the better ... 0-type filler. Packing height select 450-600mira. Comparison of oxygen before and after transformation of the first structure shown in Figure 6. Figure 6 before the transformation transformation transformation after the first structure of oxygen compared before and after the 5 May 1997 Closing date has Xinhua plant in Daqing,[link widoczny dla zalogowanych], Jiamusi power plants, gas turbine power plants and other units of Changzhou 50t / h, 225t / h. 420t / h and 680t / h, such as different sizes to transform the water film deaerator design,[link widoczny dla zalogowanych], with satisfactory results. After transformation, deaerator input over a period of time, running, running stability, the water oxygen are ≤ 5 Ho / L, especially in low load operation, the oxygen effect is much smaller. Unit overhaul inspection, packing without any deformation and damage, greatly reducing the maintenance work to improve the system reliability. References: E1] Hang Chen Qi, Rong two-phase flow and heat transfer {[M]. Beijing: Mechanical Industry Press, 1983 [2] Tong Yugui. Amidine Xiang Bin power plant stress the safety of access surgery provision [M]. The hemorrhoid; Shanghai Science and Du Xi and publishing. 1991. (Hui bream Series)
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