A hollow brick regenerative body structure and regenerative heater

Abstract

The invention discloses a hollow brick heat storage body structure and a heat storage heater. The hollow brick heat storage body structure includes several layers of hollow brick units; each layer of hollow brick units includes cylindrical hollow bricks and annular hollow bricks; the annular hollow bricks are coaxially arranged on the cylindrical hollow bricks. The outside of the hollow brick, and the outer surface of the cylindrical hollow brick is in contact with the inner ring surface of the annular hollow brick; the annular hollow brick is composed of a plurality of first fan-shaped hollow bricks with the same shape, size and quantity. The upper and lower hollow bricks are connected by axial positioning columns; all the first through holes in the cylindrical hollow bricks are periodically symmetrically arranged along the central axis in an "S" shape, and all the second fan-shaped hollow bricks and the second fan-shaped hollow bricks are arranged periodically and symmetrically. The vias are distributed in a "V" shape. The structural stability between the various components in the structure is good, and the special through-hole layout form effectively prevents the thermal stress cracking of the hollow brick, and improves the thermal stability, thermal shock resistance and service life.

Description

technical field [0001] The invention relates to a hollow brick regenerator structure, in particular to a hollow brick regenerator structure for a regenerative heater, which can be applied to a high-temperature pure air test system of a scramjet direct-connected test bench and other regenerative heater systems . Background technique [0002] The scramjet direct-connected test bench for regenerative heating technology uses conventional heat sources to generate heat and store it in the regenerator bed material. During the subsequent test, the heat energy is transferred from the regenerative material to the high-pressure air flow to increase the air temperature. A simulated incoming flow of high temperature and high pressure is formed. [0003] The development and application of foreign regenerative heaters are mainly concentrated in the United States (such as NASA, ASE companies and AEDC), France and Japan (NAL). Thermal analysis, material development and design technology re...

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Problems solved by technology

[0005] 1. The problem of thermal shock stability: the hollow brick regenerator works in the state of rapid cooling and rapid heating, and it is subjected to high temperature and stress changes caused by changes in internal and external temperature differences, which may cause cracking of the hollow brick regenerator, and the dust and particles produced will be Cause pollution of the heating system of the regenerator, and even damage equipment such as high temperature valves

[0006] 2. The problem of air flow deviation: during the preheating and pressurization of the regenerator heating system, if the air flow in the through-hole flow channel inside the regenerator is biased, thermal stress will be generated, the regenerator is easy to break, and flow resistance is caused at the same time increase, causing the heat storage body to float

[0008] At present, there is no record of the specific structure of the heat storage body in the hollow brick type heat storage heater in the existing public technology. Therefore, in order to meet the research of the hollow brick type heat storage heater, it is urgent to provide a heat storage body structure to meet the current needs

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