汽輪機高壓加熱器文獻及其翻譯畢業(yè)論文-在線瀏覽
2024-08-02 17:28本頁面
【正文】 ure heater add) (hereinafter referred to as high as water supply under pressure and temperature rise accordingly。t pitch without water, frequent operation. Scanty conduit scour serious, vibration is very big, the carbon steel elbow frequently blunt bad. After the high water regulator with hydrophobic moved to the deaerator39。 elbow, tee instead with stainless steel elbow instead of carbon steel elbow, do regular inspection change in time.About high adding startstop Due to the unit is slippery parameters, so startstop high add can along with unit and startstop. High add random startup, load increasing gradually, steam extraction temperature, pressure, and flow rate and the rising water heater is the temperature, metal can be controlled in small range, reduce the pipe and tube plate of temperature, can avoid the pipe to bilge mouth relax and pipe leakage uneven and cause inflation.Of course in high water add startstop control, not once pipe leakage operating more nervous. If high plus using random startstop the ways in which important is normal temperature, temperature drop rate of temperature control, because of the speed and temperature drop directly affected by the thermal stress of the weld. According to experience, usually in the temperature change for export judgement basis. Harbin boiler temperature not greater than suggestion 3 ~ 5 ℃ / min, temperature drop is not more than 170 ℃ / min, Shanghai auxiliary equipment factory proposed regulations ℃ / min and 2 ℃ / min. The temperature drop limit, is due to less than temperature rise, always first stop when the discontinuation of the steam extraction, and water heater, now still through wall temperature higher than water temperature, cold water flows through the pipe, the first in the pipe cooling contraction, easy and tube plate on the bination of causing damage. Taizhou power plant, its high add reflect bundle leakage usually occurs in high add after discontinuation in operation, so not only should attach great importance to speed, also cannot ignore temperature control of temperature drop rate.3. To add discontinuation heat consumption of high impactAccording to the high add operation care for some homemade, maintenance manual calculation steam turbine unit, GaoJiaShi discontinuation heat consumption will increase.4. last word:Whether to add put into operation high unit loads and efficient influence is very big. So, it is hoped that through the a
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