A two-fluid molten salt fast reactor overflow tank system and its control method

An overflow tank and two-fluid technology, which is applied in the two-fluid molten salt fast reactor overflow tank system and its control field, can solve the problems such as the inability of the working medium to balance the pressure, and achieve the effect of easy inspection and maintenance and clear functions.

Active Publication Date: 2021-06-29
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a two-fluid molten salt fast reactor overflow tank system and its control method, which combines the pressure control scheme of the two-fluid molten salt fast reactor with the overflow tank structure, and through the improvement of the overflow tank structure, To adjust the pressure of the fuel molten salt in the two-fluid molten salt fast reactor system is too high or too low, and solve the defect that the working medium of the molten salt reactor system in the prior art cannot flow through two phases to balance the pressure

Method used

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  • A two-fluid molten salt fast reactor overflow tank system and its control method
  • A two-fluid molten salt fast reactor overflow tank system and its control method

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Embodiment 1

[0030] Such as figure 1 As shown, a dual-fluid molten salt fast reactor overflow tank system includes an overflow pipe 2 and an overflow tank 1. One end of the overflow pipe 2 is connected to the fuel circuit main pipeline 4 of the dual-fluid molten salt fast reactor, and the overflow The other end of the pipe 2 extends upwards to the inside of the overflow tank 1; the overflow tank 1 is filled with fuel molten salt, and the liquid level of the fuel molten salt in the overflow tank 1 is lower than the nozzle height of the overflow pipe 2; the overflow pipe 2 The bottom of the tank is connected with a return pipe 9, and the return pipe 9 is connected with the main pipeline 4 of the fuel circuit.

[0031] Wherein, the return pipe 9 is provided with a fuel circuit control valve 5, the fuel circuit control valve 5 is a normally closed valve, and the fuel circuit control valve 5 is used to trigger opening according to the liquid level position signal in the overflow pipe 2 or the o...

Embodiment 2

[0049] This embodiment provides a control method for the overflow tank system of the dual-fluid molten salt fast reactor, including the following steps. rising, the expansion of the working medium is greater than the normal liquid level of the overflow pipe 1, the working medium overflows from the overflow pipe 2 and enters the overflow tank 1, and after the working medium returns to normal temperature, the liquid level in the overflow pipe 2 is lower than Normal value, the molten salt return valve 5 is triggered to open, the fuel molten salt flows into the main pipeline 4 of the fuel circuit, and the working medium lost in the fuel circuit is compensated, the liquid level of the fuel molten salt in the overflow tank 2 drops, and the fuel circuit is closed when it drops to the normal level Control valve 9.

[0050] The following operation steps are also included. When the temperature of the working medium decreases, the working medium shrinks, the liquid level gauge 16 detects...

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Abstract

The invention discloses a two-fluid molten salt fast reactor overflow tank system and a control method thereof, comprising an overflow pipe and an overflow tank, one end of the overflow pipe is connected with the main fuel circuit pipe of the two-fluid molten salt fast reactor, and the overflow The other end of the pipe extends upwards to the inside of the overflow tank; the overflow tank is filled with fuel molten salt, and the liquid level of the fuel molten salt in the overflow tank is lower than the nozzle height of the overflow pipe; the bottom of the overflow pipe is connected with a return pipe , the return pipe is connected with the main pipe of the fuel circuit. In this technical scheme, the two-fluid molten salt block reactor is combined with the overflow tank and other structures, and a circulation loop is formed among the overflow tank, overflow pipe, return pipe, and the fuel circuit of the two-fluid molten salt fast reactor. The circulation loop is The expansion of the working fluid provides sufficient absorption space, and also provides sufficient compensation margin for the contraction of the working fluid, providing a good way for the pressure control of the two-fluid molten salt fast reactor system.

Description

technical field [0001] The invention relates to the technical field of two-fluid molten salt fast reactor, in particular to a two-fluid molten salt fast reactor overflow tank system and a control method thereof. Background technique [0002] Molten Salt Reactor MSR: Molten Salt Reactor belongs to the fourth-generation reactor technology. In recent years, it has gradually attracted the attention of scientific research institutions in various countries, and many unique conceptual design schemes have emerged, among which dual fluid molten salt fast reactor DFFR: Dual Fluid Fast Reactor It is a relatively new molten salt reactor system solution. In addition to having a relatively novel system flow design, DFFR also has a very high fuel operating temperature greater than 1200 ° C, and the fuel used in DFFR has a relatively large expansion coefficient at this temperature, which is the pressure control system of the DFFR system. Design made demands. [0003] As we all know, the c...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G21C3/54G21C3/04
CPCG21C3/04G21C3/54Y02E30/30
Inventor何迅
OwnerNUCLEAR POWER INSTITUTE OF CHINA