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LM6000 gas turbine one of the secrets: Install the intake cooler


Difference variable orifice in parallel on the same high and low impulse control, the difference between the two switch output signal change from the second instrument through a certain switch software. Low-flow measurements with low dropout transmitter signal, usually called the wide-range flow measurement method. But no matter how extended the scope of flow measurement, pressure plates for the same flange to take the range of Reynolds number of its work must meet the national standards for use under extreme conditions GB/T2624-93, namely: Re ≥ 1260 /? D. Lu in this case a 0.697876447, D was substituted for a 259mm Re ≥ 1.5894 × 10. Re because of a 90.53004949qscMH, you can calculate the minimum operating flow rate limit (qsH) ≥ 1755.66m / h,[link widoczny dla zalogowanych], this value as the proposed small-signal traffic flow cut point. (4) flow coefficient and the beam expansion coefficient decreases with the flow, if the orifice of a large range of flow measurement system work in a smaller flow range, often resulting in value than the meter shows the actual tube flow rate is low. Flow according to the traditional design method, usually a and e is the upper limit of 80% according to flow to the selected, press the constants to handle, so if the flow of work in this case 30% to 40% of the flow measurement range, the error introduced by the flow coefficient in a 0.4%, which is the meter indication lower than the actual flow tube. Similarly, the introduction of the jet expansion coefficient of error of about 0.5% in one, the greater the pressure of work, this error will be smaller, the two were to meter indication lower than the actual value of about 1%. The traditional differential pressure flowmeter and density correction is only the differential pressure flowmeter can not overcome this error. Similarly, if the work of the traditional differential pressure flowmeter in the range of 80% or more will cause traffic indication larger than the actual flow. Address this by the flow coefficient and the introduction of jet expansion coefficient of error of the actual work flow approach is to maintain the flow meter in the design of the selected working conditions and work flow values, or is a calculated line and e. Not only the density of the gas line correction, but also on a and e, F variable factors such as line correction, to achieve full compensation for gas flow measurement calculations. References: [1] Chinese National Standard GB/T2624-93, flow measurement devices throttle plates, nozzles and Venturi tubes filled with measurements of fluid flow tube or the international standard ISO5167-1, (1991) Part I Es3. National Standard Press, 1993. [2] Republic of China Ministry of Petroleum Industry Standard SYL04-83, the standard orifice plate flow measurement of natural gas measurement methods Es3. Petroleum Industry Press, 1983. [3] Chinese National Standard GB11062-89,[link widoczny dla zalogowanych], natural gas heat, density and relative density is calculated or international standards ISO6976-1983 (E) Es3. National Standard Press, 1990. r4] R. w Miller. Flow Measurement Engineering Handbook rM]. Du Mechanical Industry Press, l990. IM6000 gas turbine one of the secrets: air cooler is installed into the world, the highest simple cycle efficiency gas turbine 40 of the first IM6000 is Ottawa Health Sciences Centre as burning natural gas combined cycle thermal power plant for commercial operation of the host. The plant's maximum output is 68MW, including gas turbine power generation 42MW, steam turbines for the 26MW, the gas turbine efficiency is so high, its important because it is equipped with inlet air cooling device. The efficiency of gas turbine inlet temperature generally decrease with be improved. IM6000 basically gas turbine inlet temperature is 10 [C run under the best conditions around. To maintain this temperature stability, ethylene glycol / water mixture in the heat recovery boiler (HRB) and a control loop between the heat exchanger to heat 9 ~ 10_C following intake (an relatively cold Canada.) In warm weather, a 205kPa power source for the hot steam absorption chiller used to cool the inlet air. And ethylene glycol / water pipeline is different,[link widoczny dla zalogowanych], HRB pressure heat recovery boiler has 4N Regional: 6302kPa steam for steam turbine, 790kPa user or steam heating steam turbine directly,[link widoczny dla zalogowanych], 205kPa steam to cooling water system or to the deaerator. Re-injection gas turbine extraction steam from the steam turbine, the pressure to 4762kPa, 205kPa steam extraction leading to the absorption chiller, deaerator and steam / hot water heat exchanger. In front of inlet air cooling, followed by re-injection of steam to form a very perfect and efficient LM6000 gas turbine generator sets, worth learning from. (Ruiying feed)
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