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

A Brayton cycle and auxiliary system technology, applied in the direction of machines/engines, mechanical equipment, gas turbine devices, etc., can solve problems such as efficiency loss, affecting power output efficiency, and difficulty in generating a wide range of flow or power adjustment capabilities

Active Publication Date: 2021-05-18
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Bypass auxiliary system for closed Brayton cycle heat engine system and heat engine system
  • Bypass auxiliary system for closed Brayton cycle heat engine system and heat engine system

Examples

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Embodiment 1

[0037] like figure 1 As shown, this embodiment discloses a bypass auxiliary system for a closed Brayton cycle heat engine system, including a first regulating unit and a second regulating unit, wherein:

[0038] The first adjustment unit includes a first branch line 30, a compressor 33, and a buffer tank 35, wherein the inlet end of the first branch line 30 is connected to the outlet of the high-pressure compressor 10 in the closed Brayton cycle heat engine system, Its outlet port is connected with the inlet of the low-pressure compressor 20 in the closed Brayton cycle heat engine system, so that the auxiliary bypass system of this embodiment is connected in parallel with the main circuit of the closed Brayton cycle heat engine system, and the compressor 33 and the buffer tank 35 Connected in series to the first branch pipeline 30, the compressor 33 is used to suck the working fluid from the closed Brayton cycle heat engine system, and the buffer tank 35 is used to store the w...

Embodiment 2

[0054] like figure 1 As shown, this embodiment discloses a closed-type Brayton cycle heat engine system, which includes a main circuit, and also includes a bypass auxiliary system in Embodiment 1, and the bypass auxiliary system and the main circuit are connected in parallel.

[0055] Specifically, the main circuit includes a high-pressure compressor 10 and a low-pressure compressor 20, wherein the outlet of the high-pressure compressor 10 is connected to the inlet of the first branch pipeline 30, and the inlet of the low-pressure compressor 20 is connected to the first branch pipeline 30. The outlet port of the main circuit is connected to regulate the flow of the working medium in the main circuit by circulating the working medium in the main circuit to the bypass auxiliary system and releasing the working medium in the bypass auxiliary system to the main circuit, thereby controlling the power of the main circuit Quick, wide-ranging adjustments.

[0056] In some embodiments...

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Abstract

The invention discloses a bypass auxiliary system for a closed Brayton cycle heat engine system. The bypass auxiliary system comprises a first adjusting unit and a second adjusting unit, the first adjusting unit comprises a first branch pipeline, a compressor and a temporary storage tank, the compressor and the temporary storage tank are connected to the first branch pipeline in series, and the compressor is used for sucking a working medium from the heat engine system; the temporary storage tank is used for storing the working medium sucked by the compressor and releasing the stored working medium to the heat engine system; and the second adjusting unit is connected with the first adjusting unit in parallel and comprises a second branch pipeline and an adjusting valve, and the adjusting valve is arranged on the second branch pipeline. The invention further discloses the closed Brayton cycle heat engine system comprising the bypass auxiliary system. According to the bypass auxiliary system for the closed Brayton cycle heat engine system and the heat engine system, the flow and power of a main loop in the closed Brayton cycle heat engine system can be adjusted, the response speed is high, the adjusting range is large, and the power output efficiency loss can be reduced.

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 a 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 in the entire main circuit, this adjustment involves the pressure tube It is difficult to achieve the purpose of rapid response and to produce a wide range of flow or power adjustment capabilities with the existing system design or equipment desig...

Claims

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Application Information

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IPC IPC(8): F02C6/16F02C9/16
CPCF02C6/16F02C9/16Y02E60/16
Inventor 李亚飞邢继堵树宏丁亮于沛姚鸿帅李杰
Owner CHINA NUCLEAR POWER ENG CO LTD