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Fluid dynamics simulation system and calibration method of reactor primary loop parallel pumping system

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 test cost, saving cost, and achieving remarkable effect.

Active Publication Date: 2017-03-08
NUCLEAR POWER INSTITUTE OF CHINA
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  • Claims
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AI Technical Summary

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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  • Fluid dynamics simulation system and calibration method of reactor primary loop parallel pumping system

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Embodiment

[0038] like 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;

[00...

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 fluid dynamic simulation system and a calibration method of a reactor primary circuit parallel pump circuit system, which solves the problem that an existing simulated pump circuit operates under forced circulation working conditions, natural circulation working conditions, and forced circulation and natural circulation mutual conversion working conditions. When simulating the flow distribution method and hydraulic characteristics, the simulation effect is not accurate. The present invention comprises a main pump simulation branch and a backup pump simulation branch connected in parallel with the main pump simulation branch; the backup pump simulation branch includes a parallel pipeline (1), and a first resistance set on the parallel pipeline (1) Regulator (2), first check valve (3) and first flow meter (4). The invention has the advantages of being able to completely and accurately simulate the hydraulic characteristics of parallel pump circuits under various conditions, effectively reducing the test cost, and simultaneously effectively increasing the simulation accuracy.

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 Patents(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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