Method for evaluating energy-saving transformation benefits of condenser vacuum-pumping system
A technology of vacuum pumping system and evaluation method, which is applied in the directions of instruments, technical management, data processing and application, etc., and can solve the problems that hinder the selection of the transformation plan of the vacuum pumping system and the lack of evaluation methods for energy saving benefits, etc.
Active Publication Date: 2019-10-01
ZHEJIANG ZHENENG TECHN RES INST
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However, under the actual operating boundary conditions of a certain unit, there is currently no effective evaluation method for the energy-saving benefit after the vacuum system transformation, and it is impossible to give specific energy-saving benefit data for such transformation projects, which hinders the promotion and promotion of the vacuum system transformation Selection of Retrofit Scheme
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[0027] The present invention will be further described below in conjunction with the examples. The description of the following examples is provided only to aid the understanding of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
[0028] Through the analysis of the operation characteristics of the water ring vacuum system, combined with the condensation heat transfer law inside the condenser, on the basis of theoretical analysis, the boundary conditions of the vacuum system operation are classified, and an evaluation method is given for statistical analysis. Energy-saving benefits of vacuum system retrofit projects under actual operating boundary conditions. The method for evaluating the b...
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The invention relates to a method for evaluating energy-saving transformation benefits of a condenser vacuum-pumping system. The method comprises the following steps: step 1) counting vacuum tightnessdata of condensers at a high-pressure side and a low-pressure side of a unit; step 2) obtaining an optimal operation mode of the circulating pump operation combination according to historical operation data of the unit and cold end optimization; step 3) measuring the pressure change values of the high-low pressure side condenser at different load points after the vacuum-pumping system is transformed; and step 4) calculating the condenser internal condensation heat exchange coefficient K0 under the operation mode before transformation of the vacuum-pumping system at each load point and the condenser internal condensation heat exchange coefficient K1 under the operation mode after transformation of the vacuum-pumping system. The method has the beneficial effects that the energy-saving benefits of the vacuum-pumping system transformation project can be counted in real time within a set time period under the actual operation boundary condition, and detailed statistics and test data are provided for summarization, popularization and model selection of the transformation project of the type.
Description
technical field [0001] The invention relates to a condenser vacuum pumping system in a cold end system of a thermal power generating set, in particular to an evaluation method for energy-saving reconstruction benefits of a condenser vacuum pumping system. Background technique [0002] The efficiency of the thermal power generation unit mainly depends on the parameters of the hot end and the cold end of the thermodynamic cycle (Rankine cycle). The parameters of the hot end are mainly reflected in the main steam pressure and temperature on the boiler side, which have been determined during the design and construction of the unit. At present, power plant technicians pay more attention to it during the operation process, and there are corresponding assessment mechanisms for the main steam pressure, temperature, and reheat steam temperature indicators, and its energy-saving potential has been fully tapped. In addition, after the unit is put into operation, the investment in energ...
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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06313G06Q10/0639G06Q50/06Y02P90/82
Inventor 朱宝顾伟飞董益华罗海华祝相云赵佳骏赵卫正陈杰罗永强冯大元梅益铭
Owner ZHEJIANG ZHENENG TECHN RES INST