Method for testing actual flow characteristics of steam turbine valve

Abstract

The invention discloses a method for testing actual flow characteristics of a steam turbine valve. The method relates to testing contents, testing conditions, testing steps and specific methods. The testing steps comprise the following steps that firstly, characteristic relation tests between total steam turbine valve steam inlet adjustment valve instructions and steam inlet flow are carried out according to a working mode in order; secondly, actual flow characteristic tests of single steam inlet adjustment valve is carried out. The method is easy and convenient to adopt and practical, can accurately finish the actual flow characteristic tests of steam turbine steam inlet adjustment valves in the field in the technical process to acquire accurate flow characteristics, is helpful in finding out problems and safety hazards or potential problems and potential safety hazards in the thermal power generating unit active load control process, provides evidence for an active load control system of a power generating unit, and improves comprehensive performance of active load control of the unit, safe and economical operation of power grids and power plants and electric energy quality.

Description

technical field [0001] The invention relates to a method for testing the flow characteristic of a steam turbine valve. Background technique [0002] As a prime mover, the steam turbine has been widely used in many fields, especially in the thermal power generation industry. Its role is crucial to the production process and cannot be replaced. As the prime mover, the control and adjustment of the output power of the steam turbine relies on the steam inlet regulating valve. By changing the opening of the steam inlet regulating valve, the amount of steam entering the steam turbine to do work is adjusted to achieve the purpose of output power control. The size of the active power (active electricity) emitted by the thermal power generating set is controlled by the steam inlet regulating valve of the steam turbine. [0003] The flow characteristic of the steam inlet regulating valve of the steam turbine (referring to the relation characteristic between the flow rate of the mediu...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for testing the actual flow characteristics of steam turbine valves, which can correctly complete the test of the actual flow characteristics of the steam inlet regulating valve of the steam turbine on the spot during the process, and obtain accurate actual flow characteristics to overcome the In the existing technology, the actual flow characteristic test of the steam inlet regulating valve of the steam turbine is inaccurate.

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