Bypass auxiliary system, heat engine system for closed Brayton cycle heat engine system

Abstract

The invention discloses a bypass auxiliary system for a closed Brayton cycle heat engine system. The compressor and the buffer tank are connected in series on the first branch pipeline, the compressor is used for pumping the working medium from the heat engine system, and the buffer tank is used for storing the working medium pumped by the compressor and releasing the stored working medium to the heat engine system; The second regulating unit is connected in parallel with the first regulating unit, and includes a second branch pipeline and a regulating valve, and the regulating valve is arranged on the second branch pipeline. The invention also discloses a closed Brayton cycle heat engine system including the bypass auxiliary system. The invention can adjust the flow and power of the main circuit in the closed Brayton cycle heat engine system, and has fast response speed and large adjustment range, which is beneficial to reduce the loss of power output efficiency.

Description

technical field [0001] The invention belongs to the field of nuclear technology, and in particular relates to a bypass auxiliary system for a closed Brayton cycle heat engine system and a closed Brayton cycle heat engine system including the bypass auxiliary system. Background technique [0002] In the device or system that uses the open Brayton cycle as the principle to produce power, the adjustment of its power mainly depends on the change of the flow rate of the working medium in the main circuit. In a device or system that uses the closed Brayton cycle as the principle to produce power, if it only depends on the adjustment of the circulating pressure in the main circuit, that is, the adjustment of the charging volume of the working medium in the entire main circuit, this adjustment involves the pressure pipe. It is difficult to achieve the purpose of rapid response with the existing system design or equipment design, and it is difficult to generate a wide range of flow o...

AI Technical Summary

Problems solved by technology

In a device or system that uses the closed Brayton cycle as the principle to produce power, if it only depends on the adjustment of the circulation pressure in the main circuit, that is, the adjustment of the working fluid filling amount of the entire main circuit, this adjustment involves the pressure tube It is difficult to achieve the purpose of rapid response, and it is difficult to produce a wide range of flow or power adjustment capabilities with the existing system design or equipment design.

Therefore, the closed Brayton cycle is generally adjusted by bypassing the main circuit circulation. The bypass bypassing the main circuit circulation method will cause some flow to circulate through the bypass instead of the turbine for work. lead to loss of efficiency

[0003] At present, there are two main ways of bypassing the main loop of the traditional bypass: one is to adjust the filling volume of the main loop by charging and exhausting, which has the advantage that the flow or power can be adjusted in a wide range. The disadvantage is that the response speed is slow and the control ability is not precise; the second is to use a straight-through bypass with a regulating valve for regulation. The advantage is that the response speed is fast. Overall PTO Efficiency

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