1 |
불순물 제거용 스팀의 압력 산출 방법 |
KR1020030032967 |
2003-05-23 |
KR1020040100560A |
2004-12-02 |
김대중 |
PURPOSE: A method for calculating a CFR(Cleaning Force Ratio) of steam applied to each pipeline part for steam blowing is provided to reduce incorrectness, time, and expense of manual calculations, and quickly manage data changes on a spot by automatically calculating the CRF of the steam applied to each pipeline part. CONSTITUTION: The pipeline for the steam blowing is divided into each node(S1). A program calculation shell matched with each node is generated(S2). A BMCR(Boiler Maximum Continuous Rate) state, a pipe size of each node, and pipeline data are inputted to the program calculation shell, and a transformed pipe size replaced with the size of temporary pipeline is inputted(S6). A drum pressure that a CFR value is over 1.3 is calculated by changing the drum pressure(S9). |
2 |
증기 분사 세정 조건 산출방법 |
KR1020030032974 |
2003-05-23 |
KR1020040100566A |
2004-12-02 |
김대중 |
PURPOSE: A method for calculating an optimal cleaning condition of steam blowing is provided to minimize a calculation error of a design condition for the steam blowing of turbine pipeline of a thermal power plant, and reduce manpower and time for calculating the design condition. CONSTITUTION: After fixing data related to temporary pipeline of a turbine, a frictional coefficient of the temporary pipeline is calculated by selecting a node(S3). The frictional coefficient for equivalent pipeline is converted by selecting a size of the equivalent pipeline(S5). A CFR(Clean Force Ratio) of each node is calculated by selecting a drum pressure(S7). It is judged that the CFR is over 1(S8). In case that the CFR is under 1, a process is returned to the step for selecting the drum pressure. In the case that the CFR is over 1, the drum pressure, a temperature, and a steam blowing flow rate are calculated(S9). |
3 |
화력 발전소의 스팀 드레인 유량 산출 방법 |
KR1020030032969 |
2003-05-23 |
KR1020040100561A |
2004-12-02 |
김대중 |
PURPOSE: A method for automatically calculating a flow rate of steam drained off from the end of a steam drain pipe to a flash tank in a thermal power plant is provided to reduce time needed for calculating the flow rate and increase accuracy by automatically calculating/outputting the flow rate of the steam drain with a flow rate calculating program. CONSTITUTION: A pressure, a size, and a length of a pipe, and data for fittings/valves are inputted(S1). A friction coefficient, an inner diameter, a friction factor, and a specific volume of the valves/fittings are calculated by using design information(S2). A ratio for a static specific heat to a constant-pressure specific heat, and limiting factors are calculated by using a calculated value(S3). A flow velocity and a pipe drain pressure are calculated by using a calculated result(S4). |