Solid waste-based large-volume heat storage body anti-cracking system and method

By combining graded functional materials and biomimetic adaptive stress release structures, the cracking problem caused by thermal stress in large-volume thermal storage bodies based on solid waste during thermal cycling is solved, realizing the stability and safety of the thermal storage body and promoting environmentally friendly energy storage of solid waste resources.

CN121829178APending Publication Date: 2026-04-10XIAN THERMAL POWER RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN THERMAL POWER RES INST CO LTD
Filing Date
2026-01-23
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Traditional solid waste-based large-volume thermal storage designs neglect the impact of thermal stress on structural stability, leading to uneven thermal expansion within the material during temperature changes, which can cause cracks and structural damage. Existing technologies have gaps in stress release and control for large-volume thermal storage.

Method used

By employing graded functional materials design and combining a biomimetic adaptive stress release structure, including a flexible hinge unit composed of shape memory alloy and rubber matrix, intelligent cooling and real-time compensation are achieved through a distributed microchannel heat exchanger, thus constructing a predictive-feedback closed-loop control system to realize precise management and release of thermal stress.

Benefits of technology

It effectively suppresses the generation and propagation of cracks in the thermal storage body during the thermal cycle, improves structural safety and service life, and realizes the resource utilization of industrial solid waste.

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Abstract

According to the anti-cracking system and method for the solid waste-based large-volume heat storage body, the gradient functional material layer with the continuously-changed thermal expansion coefficient is constructed to actively adjust thermal stress distribution, and a bionic self-adaptive stress release structure based on the shape memory alloy is introduced to actively dissipate accumulated stress; meanwhile, distributed intelligent cooling and an optical fiber sensing array are combined, and a prediction-feedback closed-loop control system is constructed by utilizing a machine learning algorithm, so that precise management and release of a stress field in the heat storage body in a heat cycle process are cooperatively realized, generation and expansion of cracks are effectively inhibited, and the reliability of the system is improved. The structural safety of the heat storage body is remarkably improved, the service life of the heat storage body is remarkably prolonged, and meanwhile resource utilization of industrial solid waste is achieved.
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Description

Technical Field

[0001] This invention relates to the fields of solid waste resource utilization, civil engineering and energy storage, and particularly to a solid waste-based large-volume thermal storage anti-crack system and method. Background Technology

[0002] In the design and application of large-volume thermal storage bodies based on solid waste, traditional material design often neglects the impact of thermal stress on structural stability, resulting in uneven thermal expansion inside the material when the temperature changes, which in turn leads to cracks or even structural damage.

[0003] In the prior art, although there have been attempts to improve this problem by using functionally graded materials (FGM) and biomimetic structures, such as reference patents CN120197312A and CN115722680A, the former optimizes the interface performance of the tool coating by constructing a gradient transition structure, solving problems such as high brittleness of the coating interface, insufficient adhesion and limited thermal stability; the latter proposes an additive manufacturing method for a biomimetic functionally graded thermal protection structure, realizing a lightweight and high-strength thermal protection structure design.

[0004] However, these technical solutions are mainly focused on specific application areas, such as tool coatings and aerospace thermal protection. There are still technical gaps in the stress release and control of large-volume solid waste-based thermal storage bodies during thermal cycling, as well as in how to utilize the characteristics of solid waste materials for design.

[0005] To address the aforementioned issues, this application proposes a crack-resistant system and method for large-volume thermal storage bodies based on solid waste. Through the innovative application of gradient design of solid waste components and biomimetic adaptive stress release structure, the cracking problem caused by thermal stress during temperature changes in large-volume thermal storage bodies is effectively solved.

[0006] The technical solution of this application not only makes full use of solid waste resources and realizes environmentally friendly energy storage, but also ensures the stability and safety of the thermal storage body during the thermal cycle through an intelligent cooling and real-time compensation system, which has important theoretical and application value. Summary of the Invention

[0007] A first aspect of this disclosure provides a crack-resistant system for large-volume thermal storage bodies based on solid waste, the system comprising: The thermal storage body is composed of a graded functional material. The graded functional material includes a high-temperature zone, a transition zone, and a low-temperature zone from the inside to the outside along the heat flow direction. The high-temperature zone is mainly composed of a solid waste-based ceramic phase, the transition zone is mainly composed of a mixture of solid waste metal slag and ceramic particles, and the low-temperature zone is mainly composed of industrial waste slag with a low coefficient of thermal expansion. The coefficients of thermal expansion of the materials in the high-temperature zone, the transition zone, and the low-temperature zone increase sequentially, forming a continuous gradient transition. A biomimetic adaptive stress relief structure is disposed within the heat storage body. The biomimetic adaptive stress relief structure includes a flexible hinge unit made of a shape memory alloy and a rubber matrix composite. A pressure vessel that houses the heat storage body, wherein a pressurization device is provided at the top of the pressure vessel and a pressure relief valve is provided at the bottom; The sensing and monitoring module includes a fiber optic grating sensor array deployed within the system for real-time monitoring of the temperature and strain signals of the thermal storage body. The control module is communicatively connected to the sensing and monitoring module and the biomimetic adaptive stress release structure, and is used to regulate the stress release process of the biomimetic adaptive stress release structure according to the temperature and strain signals.

[0008] In conjunction with the first aspect, the graded functional material is constructed in the following manner: The material in the high-temperature zone includes mullite synthesized from fly ash; The material of the transition zone comprises a mixture of steel slag, blast furnace slag, and fly ash; The material in the low-temperature zone comprises a mixture of slag and coal gangue.

[0009] In conjunction with the first aspect, the components of each region of the graded functional material are as follows by weight percentage: High-temperature zone: 75% fly ash synthesized mullite + 25% steel slag; Transition zone: 50% steel slag + 30% blast furnace slag + 20% fly ash; Low-temperature zone: 60% slag + 40% coal gangue.

[0010] In conjunction with the first aspect, the flexible hinge unit gradually closes when an external load is applied due to an increase in temperature, and returns to its initial state after the temperature drops and the load is unloaded, thereby achieving cyclic deformation.

[0011] In conjunction with the first aspect, the flexible hinge unit is a unidirectional hinge or a bidirectional hinge.

[0012] In conjunction with the first aspect, the system also includes a distributed microchannel heat exchanger, which is disposed inside or around the heat storage body. A liquid heat exchange medium flows through the distributed microchannel heat exchanger for directional temperature control of the heat storage body. The distributed microchannel heat exchanger is a single channel or an array of multiple channels.

[0013] A second aspect of this disclosure provides a method for preventing cracking in large-volume thermal storage bodies based on solid waste, the method comprising the following steps: Prepare a thermal storage body with gradient functional materials, so that it forms a high-temperature zone, a transition zone and a low-temperature zone with a continuous gradient change in the coefficient of thermal expansion along the heat flow direction; A biomimetic adaptive stress relief structure is provided in the body of the thermal storage body. The structure includes a flexible hinge unit made of shape memory alloy and rubber matrix composite. The temperature and strain of the thermal storage body during the thermal cycle are monitored in real time using a sensor monitoring module. Based on the monitored temperature and strain signals, the biomimetic adaptive stress relief structure is driven by the control module to adaptively deform in order to release the accumulated thermal stress.

[0014] In conjunction with the second aspect, the method also includes actively regulating the temperature by delivering a liquid heat exchange medium to the heat storage body through a distributed microchannel heat exchanger.

[0015] A third aspect of this disclosure provides an electronic device comprising: One or more processors; A storage unit is used to store one or more programs, which, when executed by one or more processors, enable the one or more processors to implement the solid waste-based large-volume thermal storage anti-crack method.

[0016] A fourth aspect of this disclosure provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, enables the implementation of the solid waste-based large-volume thermal storage anti-crack method.

[0017] Beneficial effects: This disclosure provides a crack-resistant system and method for large-volume thermal storage bodies based on solid waste. By constructing a gradient functional material layer with a continuously varying coefficient of thermal expansion, the thermal stress distribution is actively adjusted. A biomimetic adaptive stress release structure based on shape memory alloy is introduced to actively dissipate accumulated stress. At the same time, distributed intelligent cooling and fiber optic sensing arrays are combined, and a predictive-feedback closed-loop control system is constructed using machine learning algorithms. This collaboratively achieves precise management and release of the internal stress field of the thermal storage body during thermal cycling, effectively suppressing the generation and propagation of cracks, significantly improving the structural safety and service life of the thermal storage body, and realizing the resource utilization of industrial solid waste. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a solid waste-based large-volume thermal energy storage anti-crack system according to an embodiment of the present disclosure; Figure 2 This is a schematic flowchart illustrating a method for preventing cracking in a large-volume thermal storage body based on solid waste, according to an embodiment of this disclosure. Figure 3 An electronic device according to an embodiment of this disclosure. Detailed Implementation

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those disclosed herein.

[0020] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0021] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0022] like Figure 1 The diagram shown is a structural schematic of a solid waste-based large-volume thermal energy storage anti-crack system according to an embodiment of this disclosure. The system includes: The thermal storage body 110 is composed of a graded functional material. The graded functional material includes a high-temperature zone, a transition zone, and a low-temperature zone from the inside to the outside along the heat flow direction. The high-temperature zone is mainly composed of a solid waste-based ceramic phase, the transition zone is mainly composed of a mixture of solid waste metal slag and ceramic particles, and the low-temperature zone is mainly composed of industrial waste slag with a low coefficient of thermal expansion. The coefficients of thermal expansion of the materials in the high-temperature zone, the transition zone, and the low-temperature zone increase sequentially, forming a continuous gradient transition. The graded functional material is constructed in the following manner: The material in the high-temperature zone includes mullite synthesized from fly ash; The material of the transition zone comprises a mixture of steel slag, blast furnace slag, and fly ash; The material in the low-temperature zone comprises a mixture of slag and coal gangue.

[0023] The components of each region of the graded functional material are as follows by weight percentage: High-temperature zone: 75% fly ash synthesized mullite + 25% steel slag; Transition zone: 50% steel slag + 30% blast furnace slag + 20% fly ash; Low-temperature zone: 60% slag + 40% coal gangue.

[0024] Specifically, the thermal storage body 110 is carefully constructed using gradient functional materials. Its design follows the direction of heat flow transfer and is divided into three distinct functional levels from the inside out: a high-temperature zone, a transition zone, and a low-temperature zone.

[0025] The high-temperature zone, as the core part directly subjected to high temperatures, is mainly composed of solid waste-based ceramic phases, giving this region excellent high-temperature resistance and thermal stability. The transition zone is mainly composed of a mixture of solid waste metal slag and ceramic particles, acting as a performance bridge between the high-temperature and low-temperature zones. The outermost low-temperature zone is mainly composed of industrial waste slag with a low coefficient of thermal expansion, designed to achieve better thermal matching with the external environment.

[0026] To achieve a smooth transition in material properties, the graded functional material is constructed as follows: the high-temperature zone material contains mullite synthesized from industrial solid waste fly ash, embodying the concept of waste resource utilization. The transition zone material contains a mixture of steel slag, blast furnace slag, and fly ash, with performance transition achieved through component adjustment. The low-temperature zone material contains a mixture of blast furnace slag and coal gangue, fully utilizing the characteristics of different waste residues.

[0027] Specifically, the composition ratios for each region, by weight percentage, are as follows: the high-temperature zone uses a mixture of 75% fly ash-synthesized mullite and 25% steel slag; the transition zone uses a mixture of 50% steel slag, 30% slag, and 20% fly ash; and the low-temperature zone uses a combination of 60% slag and 40% coal gangue. This carefully designed composition gradient ensures a continuous increase in the coefficient of thermal expansion from the inside out, effectively mitigating the thermal stress caused by drastic temperature changes and fundamentally improving the crack resistance of the thermal storage body.

[0028] A biomimetic adaptive stress relief structure 120 is disposed within the heat storage body. The biomimetic adaptive stress relief structure includes a flexible hinge unit made of a shape memory alloy and a rubber matrix composite. The flexible hinge unit gradually closes when an external load is applied due to an increase in temperature, and returns to its initial state after the temperature drops and the load is unloaded, thus achieving cyclic deformation.

[0029] Specifically, the biomimetic adaptive stress relief structure 120 is integrated inside the thermal storage body. Its core innovation lies in the use of a flexible hinge unit made of a shape memory alloy and a rubber matrix composite. This design is inspired by the adaptive mechanisms in nature, endowing the thermal storage body with the ability to actively adapt to environmental changes through the properties of smart materials. The shape memory alloy is responsible for sensing temperature changes and generating corresponding phase change driving forces, while the rubber matrix provides the necessary elastic support and damping buffer. The two work together to form a smart composite unit that can dynamically respond to thermal loads.

[0030] This flexible hinge unit exhibits unique temperature response behavior: when system operation causes a temperature rise and an external load is applied, the hinge unit gradually closes from its initial semi-open state. This active deformation process effectively absorbs and releases internal stress caused by the limited thermal expansion of the material. Conversely, after the system stops operating, the temperature drops, and the load is unloaded, the hinge unit can automatically return to its initial semi-open state thanks to the material's own recovery properties, preparing for the next thermal cycle. This reversible, cyclic deformation capability makes the stress release process a dynamic, adaptive, and sustainable process synchronized with the thermal cycle, thereby significantly improving the durability and reliability of the thermal storage body under long-term repeated thermal shocks.

[0031] Pressure vessel 130, which houses the heat storage body, is provided with a pressurization device at the top and a pressure relief valve at the bottom; The pressure vessel 130 serves as the pressure-bearing and protective outer shell of the system, completely housing the heat storage body 110 within its internal space. This vessel structure constitutes a closed pressure environment, which is crucial for maintaining the stable operation of the system under high temperature and high pressure conditions.

[0032] At the top of the pressure vessel is a dedicated pressurization device that can actively apply controllable pressure to the interior of the vessel according to the system's operational requirements. This pressurization process helps to suppress the expansion of microscopic defects inside the thermal storage material under high-temperature conditions and improves its overall structural density, thereby enhancing the material's resistance to creep and cracking.

[0033] In conjunction with the pressurization function at the top, a pressure relief valve is installed at the bottom of the pressure vessel. This valve serves as a crucial safety barrier, its core function being to monitor and maintain the internal pressure of the vessel within a preset safety threshold in real time. When the internal pressure exceeds the limit due to abnormal conditions (such as cooling failure or a sudden increase in power), the pressure relief valve will automatically open immediately, rapidly releasing excess medium and pressure, effectively preventing structural damage to the vessel due to overpressure and ensuring the safe operation of the entire system.

[0034] The pressurization device and the pressure relief valve work together to achieve active regulation and passive protection of the internal working conditions of the pressure vessel, providing a stable and reliable high-temperature and high-pressure operating environment for the internal heat storage materials and stress relief structure.

[0035] The sensing and monitoring module 140 includes a fiber optic grating sensor array deployed in the system for real-time monitoring of the temperature and strain signals of the thermal storage body. The sensing and monitoring module 140 serves as the system's "nerve sensing system," and its core is a fiber optic grating sensor array deployed at key locations inside the thermal storage body. These miniature sensors act like sensitive nerve endings distributed within the thermal storage body, enabling them to synchronously and in real-time capture every minute temperature change and mechanical strain signal during the thermal cycle.

[0036] This sensing array, based on advanced fiber Bragg grating technology, converts the temperature and strain changes of the physical field into quantifiable electrical signals by analyzing the precise offset of the reflected light wavelength. This monitoring method has unique advantages: it is inherently safe as it is not charged; it has strong resistance to electromagnetic interference, making it suitable for long-term stable operation in complex industrial environments; and it can achieve distributed measurement, obtaining complete temperature and stress field distribution maps inside the thermal storage body.

[0037] These real-time collected dynamic data form the perceptual foundation for the system's intelligent decision-making. They are instantly transmitted to the central processing unit, providing accurate and reliable data support for subsequent stress state assessment, failure risk warning, and the formulation of proactive control strategies. It is precisely based on this high-precision real-time perception capability that the entire system can achieve the leap from passively enduring thermal stress to proactive intelligent regulation.

[0038] The control module 150 is communicatively connected to the sensing and monitoring module and the biomimetic adaptive stress release structure, and is used to regulate the stress release process of the biomimetic adaptive stress release structure according to the temperature and strain signals.

[0039] The control module 150, acting as the "intelligent hub" of the entire system, establishes a bidirectional communication connection with the sensing and monitoring module 140 and the biomimetic adaptive stress relief structure 120. The core function of this module is to construct a complete closed-loop control system of perception-decision-execution. By receiving real-time temperature and strain signals from the fiber optic grating sensor array, it performs high-speed processing and intelligent analysis on these key parameters and generates precise control commands accordingly.

[0040] Based on real-time assessment of the internal stress state of the thermal storage body, the control module can dynamically regulate the actuation behavior of the flexible hinge unit in the biomimetic adaptive stress release structure. Specifically, it uses a preset control algorithm to determine when and how much to trigger the phase transition behavior of the shape memory alloy, thereby precisely controlling the closing and recovery rhythm of the hinge unit and achieving active management and orderly release of thermal stress.

[0041] This intelligent control process enables the system to transcend the limitations of passive response, achieving advanced prediction and adaptive management of the internal stress state of the thermal storage body. It ensures that the timing and intensity of stress release always match the actual operating conditions, thereby significantly improving the operational reliability, structural safety, and service life of the entire thermal storage system during complex thermal cycles.

[0042] like Figure 2 The diagram shown is a flowchart illustrating a method for preventing cracking in large-volume solid waste-based thermal storage bodies according to an embodiment of this disclosure, including: S1: Prepare a thermal storage body with gradient functional materials, so that it forms a high-temperature zone, a transition zone and a low-temperature zone with a continuous gradient change in the coefficient of thermal expansion along the heat flow direction; S2: A biomimetic adaptive stress relief structure is provided in the body of the heat storage body, the structure including a flexible hinge unit made of shape memory alloy and rubber matrix composite; S3: Real-time monitoring of the temperature and strain of the thermal storage body during the thermal cycle using a sensor monitoring module; S4: Based on the monitored temperature and strain signals, the control module drives the biomimetic adaptive stress relief structure to perform adaptive deformation in order to release the accumulated thermal stress.

[0043] Specifically, the method first constructs the material basis of the system through step S1, namely, preparing the heat storage body with gradient functional materials. By precisely controlling the material composition and structure of the high temperature zone, transition zone and low temperature zone, it forms a layered system with a continuous gradient change in thermal expansion coefficient along the heat flow direction, thus pre-constructing the physical basis that can smoothly transition thermal stress at the material level.

[0044] In step S2, the method further implants a biomimetic adaptive stress release structure into the thermal storage body. The core of this structure is a flexible hinge unit made of shape memory alloy and rubber matrix composite, which gives the system a biological-like perception and response capability, realizing the leap from passive bearing to active adaptation.

[0045] Based on this, step S3 involves deploying a sensing and monitoring module to perceive and monitor the temperature and strain status of the thermal storage body in real time and across the entire range during the thermal cycle, providing accurate data support for the system's intelligent decision-making.

[0046] Finally, step S4 constitutes the core of the intelligent control of the entire method. Based on real-time monitored temperature and strain signals, it dynamically drives the biomimetic adaptive stress release structure to perform precise adaptive deformation through the control module. This closed-loop control process realizes the active and orderly release of accumulated thermal stress, enabling the system to dynamically adapt to complex and changing working conditions, thereby ensuring the structural integrity and operational reliability of the thermal storage body during long-term service.

[0047] Furthermore, the method also includes actively regulating the temperature by delivering a liquid heat exchange medium to the heat storage body through a distributed microchannel heat exchanger.

[0048] This step, as an important part of the system's thermal management, involves the directional delivery of a liquid heat exchange medium with excellent heat transfer performance to specific areas requiring temperature control through a microchannel network embedded inside the heat storage body.

[0049] This active temperature control mechanism works in deep synergy with other functional modules of the system: based on real-time temperature field data acquired by the sensing and monitoring module, the control module can accurately calculate the required cooling intensity for each region, and then dynamically adjust the flow rate and velocity of the heat exchange medium flowing through the distributed microchannels. This directional and adjustable cooling method enables precise management of the internal temperature distribution of the thermal storage body, effectively preventing local overheating and, through synergy with the gradient material layer and stress relief structure, reducing the magnitude of thermal stress at its source, thus creating more favorable conditions for subsequent stress release.

[0050] The introduction of this active temperature control step marks a higher level of development for the system, moving from simple "post-event release" of thermal stress to a combination of "pre-event prevention and in-event control." Through joint regulation using multiple means, the structural safety of the thermal storage body under complex thermal cycling conditions is jointly ensured.

[0051] Electronic device 300 can be a desktop computer, laptop, handheld computer, cloud server, or other electronic device. Electronic device 300 may include, but is not limited to, processor 301 and memory 302. Those skilled in the art will understand that... Figure 3 This is merely an example of electronic device 300 and does not constitute a limitation on electronic device 300. It may include more or fewer components than shown, or combine certain components, or different components. For example, electronic device may also include input / output devices, network access devices, buses, etc.

[0052] Processor 301 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0053] The memory 302 can be an internal storage unit of the electronic device 300, such as a hard disk or RAM of the electronic device 300. The memory 302 can also be an external storage device of the electronic device 300, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the electronic device 300. Furthermore, the memory 302 can include both internal and external storage units of the electronic device 300. The memory 302 is used to store the computer program 303 and other programs and data required by the electronic device. The memory 302 can also be used to temporarily store data that has been output or will be output.

[0054] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be included within the protection scope of this disclosure.

Claims

1. A crack-resistant system for large-volume thermal storage bodies based on solid waste, characterized in that, The system includes: The thermal storage body is composed of a graded functional material. The graded functional material includes a high-temperature zone, a transition zone, and a low-temperature zone from the inside to the outside along the heat flow direction. The high-temperature zone is mainly composed of a solid waste-based ceramic phase, the transition zone is mainly composed of a mixture of solid waste metal slag and ceramic particles, and the low-temperature zone is mainly composed of industrial waste slag with a low coefficient of thermal expansion. The coefficients of thermal expansion of the materials in the high-temperature zone, the transition zone, and the low-temperature zone increase sequentially, forming a continuous gradient transition. A biomimetic adaptive stress relief structure is disposed within the heat storage body. The biomimetic adaptive stress relief structure includes a flexible hinge unit made of a shape memory alloy and a rubber matrix composite. A pressure vessel that houses the heat storage body, wherein a pressurization device is provided at the top of the pressure vessel and a pressure relief valve is provided at the bottom; The sensing and monitoring module includes a fiber optic grating sensor array deployed within the system for real-time monitoring of the temperature and strain signals of the thermal storage body. The control module is communicatively connected to the sensing and monitoring module and the biomimetic adaptive stress release structure, and is used to regulate the stress release process of the biomimetic adaptive stress release structure according to the temperature and strain signals.

2. The system according to claim 1, characterized in that, The graded functional material is constructed in the following manner: The material in the high-temperature zone includes mullite synthesized from fly ash; The material of the transition zone comprises a mixture of steel slag, blast furnace slag, and fly ash; The material in the low-temperature zone comprises a mixture of slag and coal gangue.

3. The system according to claim 2, characterized in that, The components of each region of the graded functional material are as follows by weight percentage: High-temperature zone: 75% fly ash synthesized mullite + 25% steel slag; Transition zone: 50% steel slag + 30% blast furnace slag + 20% fly ash; Low-temperature zone: 60% slag + 40% coal gangue.

4. The system according to claim 1, characterized in that, The flexible hinge unit gradually closes when an external load is applied due to an increase in temperature, and returns to its initial state after the temperature drops and the load is unloaded, thus achieving cyclic deformation.

5. The system according to claim 4, characterized in that, The flexible hinge unit is a unidirectional hinge or a bidirectional hinge.

6. The system according to claim 1, characterized in that, The system also includes a distributed microchannel heat exchanger, which is disposed inside or around the heat storage body. A liquid heat exchange medium flows through the distributed microchannel heat exchanger for directional temperature control of the heat storage body. The distributed microchannel heat exchanger is a single channel or an array of multiple channels.

7. A method for preventing cracking in large-volume thermal storage bodies based on solid waste, characterized in that, The method using the system as described in any one of claims 1 to 6 includes the following steps: Prepare a thermal storage body with gradient functional materials, so that it forms a high-temperature zone, a transition zone and a low-temperature zone with a continuous gradient change in the coefficient of thermal expansion along the heat flow direction; A biomimetic adaptive stress relief structure is provided in the body of the thermal storage body. The structure includes a flexible hinge unit made of shape memory alloy and rubber matrix composite. The temperature and strain of the thermal storage body during the thermal cycle are monitored in real time using a sensor monitoring module. Based on the monitored temperature and strain signals, the biomimetic adaptive stress relief structure is driven by the control module to adaptively deform in order to release the accumulated thermal stress.

8. The method according to claim 7, characterized in that, The method also includes actively regulating the temperature by delivering a liquid heat exchange medium to the heat storage body through a distributed microchannel heat exchanger.

9. An electronic device, characterized in that, include: One or more processors; A storage unit for storing one or more programs, which, when executed by one or more processors, enable the one or more processors to implement the solid waste-based large-volume thermal storage crack resistance method according to any one of claims 7 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it can implement the method for preventing cracking of large-volume thermal storage bodies based on solid waste, as described in any one of claims 7 to 8.

Citation Information

Patent Citations

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