Simulation system and calibration method for hydrodynamic power of parallel pump system of primary coolant circuit of reactor

A fluid power, simulation system technology, applied in the field of simulation system, can solve the problem of inaccurate simulation effect, and achieve the effect of reducing the test cost, reducing the test cost and increasing the simulation accuracy

Active Publication Date: 2016-07-20
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to provide a reactor primary loop parallel pump system fluid dynamics simulation system and simulation method, to solve the problem of the flow rate of an existing simulated pump circuit under forced circulation conditions, natural circulation conditions, and forced circulation and natural circulation conversion conditions. When simulating the distribution method and hydraulic characteristics, the simulation effect is not accurate

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  • Simulation system and calibration method for hydrodynamic power of parallel pump system of primary coolant circuit of reactor

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Embodiment

[0038] Such as figure 1 As shown, the hydrodynamic simulation system of the reactor primary circuit parallel pump system of the present invention includes a main pump simulation branch and a standby pump simulation branch connected in parallel with the main pump simulation branch.

[0039] The standby pump simulation branch includes a parallel pipeline 1 , a first resistance regulator 2 arranged on the parallel pipeline 1 , a first check valve 3 and a first flow meter 4 . The main pump simulation branch includes a main pipeline 5 , and a second resistance regulator 6 , a main pump 7 , a second check valve 8 and a second flow meter 9 arranged on the main pipeline 5 .

[0040] The method for calibrating the simulation system of the present invention is as follows:

[0041] (1) Under the condition of forced circulation, adjust the resistance on the simulated branch of the main pump so that the hydraulic characteristics are the same as those of the prototype main pump branch;

...

Embodiment 2

[0050] The difference between this embodiment and embodiment 1 is:

[0051] The first resistance adjusting member 2, the first check valve 3 and the first flowmeter 4 are sequentially arranged on the parallel pipeline 1 along the water flow direction in the parallel pipeline 1;

[0052] The second resistance adjustment member 6 , the main pump 7 , the second check valve 8 and the second flowmeter 9 are sequentially arranged on the main pipeline 5 along the water flow direction in the main pipeline 5 .

[0053] The flow state of fluid in the present invention in the present embodiment is:

[0054] Under the condition of forced circulation, the 2 main pumps are running, and in the simulation branch of the main pump, the fluid flows through the second resistance regulator 6 , the main pump 7 , the second check valve 8 and the second flow meter 9 in sequence. At this time, in the standby pump simulation branch, the first check valve 3 cuts off the return flow at the outlet of the...

Embodiment 3

[0057] The difference between this embodiment and embodiment 1 or embodiment 2 is that: the first resistance adjustment member 2 and the second resistance adjustment member 6 in this embodiment are preferably orifice-type resistance adjustment valves. Both the first flowmeter 4 and the second flowmeter 9 are Venturi flowmeters.

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Abstract

The invention discloses a simulation system and a calibration method for hydrodynamic power of a parallel pump system of a primary coolant circuit of a reactor and aims to solve the problem of inaccurate simulation result when an existing simulation pump path is used for simulating flow distribution manners and hydraulic characteristics under working conditions of forced circulation, natural circulation and interconversion between forced circulation and natural circulation. The simulation system comprises a main pump simulating branch and a spare pump simulating branch in parallel connection with the main pump simulating branch, wherein the spare pump simulating branch comprises a parallel connection pipeline (1) and a first resistance adjusting piece (2), a first check valve (3) and a first flow meter (4) which are arranged on the parallel connection pipeline (1). The simulation system provided by the invention has the advantages that the hydraulic characteristics of a parallel pump path under various conditions can be completely and accurately simulated, the test cost can be effectively reduced and the simulation accuracy can be effectively increased.

Description

technical field [0001] The invention relates to a simulation system, in particular to a fluid dynamic simulation system and a simulation method of a reactor primary circuit parallel pump system. Background technique [0002] Under the condition of forced circulation, the cooling water in the primary circuit of nuclear power reactor mainly relies on the driving of the circulation pump to run in the circuit. From a safety point of view, a dual-pump system is usually adopted in the design of the reactor prototype, that is, each loop is equipped with a normal circulation pump and a backup pump. The circuit formed by the parallel connection of the common pump and the standby pump is called the circulating pump circuit. [0003] During the research and development process of nuclear power reactors, a large number of system-level thermal-hydraulic tests need to be carried out. Among them, the simulation of parallel pumps in the primary loop of the reactor has an important influen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/00
CPCG21C17/001Y02E30/30
Inventor 唐瑜黄彦平徐建军谢添舟谭曙时
Owner NUCLEAR POWER INSTITUTE OF CHINA
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