On-load switch test of steam inlet valve of nuclear power plant steam turbine and its parameter determination method
A parameter determination, steam turbine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as stability, stability fluctuation, and difficulty in troubleshooting that affect the operation of various systems in nuclear power plants
Active Publication Date: 2022-03-22
LINGDONG NUCLEAR POWER +5
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Problems solved by technology
[0004] Since the opening and closing test of the inlet valve is a load test, that is, the test is carried out while maintaining the running state, and the coordination of the various systems of the entire nuclear power plant is complicated, so in the load switch test of the inlet valve, the values of each test parameter are easily affected. The stability of the operation of each system of the nuclear power plant, and the cause of the stability fluctuation is often difficult to troubleshoot
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[0047] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the application are not shown or described in the description, this is to avoid the core part of the application being overwhelmed by too many descriptions, and for those skilled in the art, it is necessary to describe these operations in detail Relevant operations are not necessary, and they can fully understand the relevant operations according to the description in the specification and genera...
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The invention relates to the technical field of steam turbine regulation systems in nuclear power plants, and relates to a test method for a load switch test method for a steam inlet valve of a steam turbine in a nuclear power plant. The steam turbine includes at least two cylinders connected in series on the secondary circuit of the nuclear power plant. A group of inlet valves, including: keeping the steam turbine under load, opening and closing each group of inlet valves in sequence according to the preset sequence and at a set switching rate; during the closing process of each group of inlet valves, Receive the collected maximum pressure value in the primary circuit of the nuclear power plant; according to the obtained maximum pressure value, adjust the switching rate of the inlet valve so that the maximum pressure in the primary circuit of the nuclear power plant is None of the values is greater than the preset threshold; the adjusted switching rate is obtained to obtain the intake valve switching rate. The test method of the inlet valve with load switch of the steam turbine in the nuclear power plant mentioned above can prevent the pressure of the primary circuit from exceeding the limit value.
Description
technical field [0001] The invention relates to the technical field of a steam turbine regulating system of a nuclear power plant, in particular to a test of a steam inlet valve of a nuclear power plant steam turbine with load and a parameter determination method thereof. Background technique [0002] The regulating system of the steam turbine generator set in a nuclear power plant can implement power control, frequency control, pressure control and stress control on the generator set by adjusting the opening of the intake valve of each cylinder of the steam turbine, and implement overspeed on the load and speed of the generator set Limit, over-acceleration limit, load drop limit and steam flow limit, so that the generating set can run safely and economically in various working conditions, and meet the quality and quantity requirements of power supply. [0003] In order to ensure the normal operation of the regulating system, it is necessary to regularly carry out the load s...
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IPC IPC(8): F01D21/00F01D17/10
CPCF01D21/003F01D17/10
Inventor廖子亮郭杰夏红卫唐军
OwnerLINGDONG NUCLEAR POWER