CN-121977709-A - Solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion

CN121977709ACN 121977709 ACN121977709 ACN 121977709ACN-121977709-A

Abstract

The embodiment of the disclosure provides a solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion, which comprises a self-sensing unit and a temperature control executing mechanism, wherein the self-sensing unit and the temperature control executing mechanism are electrically connected through a data wire, the self-sensing unit comprises a high-temperature sealing container, a flexible heat preservation layer and an in-situ thermoelectric conversion layer which are arranged in the container, a current extraction rod, a data wire extraction rod, a temperature measuring point drainage copper sheet, an insulating filler, an outer lead resistor and a wiring terminal, the in-situ thermoelectric conversion layer is arranged on a high-temperature sealing gasket in the high-temperature sealing container and sequentially comprises a solid lubricant, a first conductive ceramic gasket, a second conductive ceramic gasket and a thermoelectric conversion material from bottom to top, the top of the in-situ thermoelectric conversion layer is provided with a brazing material layer formed through indium-tin welding, and the temperature control executing mechanism is a magnetostriction-vortex cooperative driving magnetic field thermal compensation device which is arranged outside the high-temperature sealing container and comprises a magnetostriction rod and a driving coil.

Inventors

YAN TINGXUE
SU FANGWEI
TAN ZENGQIANG
LI JIANGAO
QIN ZHI
YUE YI
ZOU HAILONG
LI FULIN
LI XINGWANG
Lian Xiaohan

Assignees

华能沁北发电有限责任公司
西安热工研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20260107

Claims (10)

1. The multi-field coupling temperature control system for the solid waste heat storage material based on in-situ thermoelectric conversion is characterized by comprising a self-sensing unit and a temperature control executing mechanism which are electrically connected through a data line; The self-sensing unit comprises a high-temperature sealed container, a flexible heat-insulating layer and an in-situ thermoelectric conversion layer which are arranged in the container, and a current extraction rod, a data line extraction rod, a temperature measuring point drainage copper sheet, an insulating filler, an outer lead resistor and a wiring terminal, wherein the in-situ thermoelectric conversion layer is arranged on a high-temperature sealing gasket in the high-temperature sealed container and sequentially comprises a solid lubricant, a first conductive ceramic gasket, a second conductive ceramic gasket and a thermoelectric conversion material from bottom to top, and the top of the in-situ thermoelectric conversion layer is provided with a brazing filler metal layer formed by indium-tin welding; The temperature control executing mechanism is a magnetostriction-eddy current cooperative driving magnetic field thermal compensation device arranged outside the high-temperature sealed container and comprises a magnetostriction rod and a driving coil.
2. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion according to claim 1, wherein the high-temperature sealing gasket is made of an alumina fiber reinforced aluminum magnesium lithium composite material.
3. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion according to claim 1, wherein the solid lubricant comprises a soft grease type solid lubricant.
4. The multi-field coupling temperature control system of solid waste-based heat storage materials based on in-situ thermoelectric conversion of claim 1, wherein the thicknesses of the first conductive ceramic gasket and the second conductive ceramic gasket are 0.5-1 mm.
5. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion of claim 1, wherein the first conductive ceramic gasket and the second conductive ceramic gasket are both manufactured by high-purity graphite.
6. The multi-field coupling temperature control system of solid waste based heat storage material based on in-situ thermoelectric conversion according to claim 1, wherein the thermoelectric conversion material adopts a thermoelectric material with rare earth element doped zinc oxide as a main component.
7. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion according to claim 1, wherein the driving coil is wound on the periphery of the magnetostrictive rod in a multi-layer spiral winding structure.
8. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion according to claim 1, wherein the magnetostrictive rod is made of Terfenol-D material.
9. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion according to claim 1, wherein the self-sensing unit is connected with external measurement equipment or power supply through the outer lead resistor and the connecting terminal.
10. The solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion according to claim 1, wherein the flexible heat preservation layer and the in-situ thermoelectric conversion layer are adhered in the high-temperature sealed container through an adhesive.

Description

Solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion Technical Field The embodiment of the disclosure belongs to the technical field of heat storage materials, and particularly relates to a solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion. Background In the field of temperature monitoring and control of solid waste-based heat storage materials, in the prior art, though a dynamic coupling decoupling mechanism of reinforcement learning and a physical model is adopted to realize real-time self-adaptive separation of strain-temperature components, the problem of precision bottleneck under the interference of complex multiple physical fields still exists. In addition, although the reconfigurable magnetic field excitation array and the multi-physical quantity sensing network are constructed through the intelligent excitation and sensing device, the detection precision is improved, the accurate control of the internal temperature of the material is not involved, and particularly the application of realizing in-situ thermoelectric conversion and self-sensing temperature control in a solid waste matrix is still blank. Therefore, how to solve the above-mentioned problems is a technical problem to be solved by those skilled in the art. Disclosure of Invention The embodiment of the disclosure aims at solving at least one of the technical problems existing in the prior art and provides a solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion. In one aspect of the embodiments of the present disclosure, a solid waste-based heat storage material multi-field coupling temperature control system based on in-situ thermoelectric conversion is provided, comprising a self-sensing unit and a temperature control actuator electrically connected through a data line; The self-sensing unit comprises a high-temperature sealed container, a flexible heat-insulating layer and an in-situ thermoelectric conversion layer which are arranged in the container, and a current extraction rod, a data line extraction rod, a temperature measuring point drainage copper sheet, an insulating filler, an outer lead resistor and a wiring terminal, wherein the in-situ thermoelectric conversion layer is arranged on a high-temperature sealing gasket in the high-temperature sealed container and sequentially comprises a solid lubricant, a first conductive ceramic gasket, a second conductive ceramic gasket and a thermoelectric conversion material from bottom to top, and the top of the in-situ thermoelectric conversion layer is provided with a brazing filler metal layer formed by indium-tin welding; The temperature control executing mechanism is a magnetostriction-eddy current cooperative driving magnetic field thermal compensation device arranged outside the high-temperature sealed container and comprises a magnetostriction rod and a driving coil. Optionally, the high temperature sealing gasket is made of an alumina fiber reinforced aluminum magnesium lithium composite material. Optionally, the solid lubricant comprises a soft grease type solid lubricant. Optionally, the thicknesses of the first conductive ceramic pad and the second conductive ceramic pad are 0.5-1 mm. Optionally, the first conductive ceramic pad and the second conductive ceramic pad are both made of high-purity graphite. Alternatively, the thermoelectric conversion material is a thermoelectric material containing zinc oxide doped with a rare earth element as a main component. Optionally, the driving coil is wound on the periphery of the magnetostrictive rod in a multi-layer spiral winding structure. Optionally, the magnetostrictive rod is made of Terfenol-D material. Optionally, the self-sensing unit is connected with an external measurement device or a power supply through the outer lead resistor and the wiring terminal. Optionally, the flexible heat-insulating layer and the in-situ thermoelectric conversion layer are adhered in the high-temperature sealed container through an adhesive. The beneficial effects of the embodiments of the present disclosure include: 1. The solid waste-based heat storage material multi-field coupling self-sensing temperature control system of the invention applies the in-situ thermoelectric conversion technology to the underground complex engineering surrounding rock temperature control field for the first time in China, realizes in-situ real-time sensing and accurate regulation of the temperature field through the thermoelectric effect, and has great significance for underground energy exploitation and industrial production. 2. The solid waste-based heat storage material multi-field coupling self-sensing temperature control system provided by the invention firstly provides the development and application of the solid waste as a therm