Solid waste heat storage body crack self-inhibition system and method

Abstract

Embodiments of the present disclosure provide a solid waste heat storage body crack self-inhibition system and method. The system comprises a GMI sensor array, a carrier migration monitoring module, a computer, and an EHD micro-jet device; the GMI sensor array is used to monitor the impedance change caused by the change of dislocation density at the crack tip of the solid waste heat storage body; the carrier migration monitoring module collects the impedance change data of the GMI sensor array and calculates the dislocation density distribution data of the solid waste heat storage body; the computer is electrically connected with the carrier migration monitoring module and is used to generate a micro-jet control instruction according to the dislocation density distribution data; and the EHD micro-jet device non-contact jets a repair agent to the crack area of the solid waste heat storage body according to the micro-jet control instruction. Embodiments of the present disclosure utilize the material intrinsic carrier migration effect for monitoring, without the need for implanted sensors, and simultaneously adopt the EHD micro-jet technology to realize non-contact repair, greatly improving the efficiency and accuracy of crack monitoring and repair.

Description

Technical Field

[0001] The embodiments disclosed herein belong to the field of solid waste thermal storage crack monitoring and repair technology, specifically relating to a solid waste thermal storage crack self-inhibition system and method. Background Technology

[0002] In the field of crack monitoring and repair of solid waste thermal storage bodies, existing technologies such as Chinese patents CN120121442A and CN120177396A have proposed innovative solutions for material performance testing and soil fertility testing, respectively. However, they have shortcomings in the self-inhibition of cracks in high-temperature solid waste thermal storage bodies: Although CN120121442A can achieve accurate monitoring of crack propagation in industrial ceramic products, this solution requires the application of composite dynamic loads on the material surface, and the monitoring method has limited sensitivity to microcracks (<10μm), which cannot meet the needs of real-time monitoring and automatic repair in high-temperature environments. CN120177396A focuses on soil fertility testing and remediation. Its technical principles differ significantly from the environment and requirements of crack monitoring and remediation in high-temperature solid waste thermal storage bodies, and it cannot be directly applied to crack suppression in high-temperature environments. Summary of the Invention

[0003] The embodiments disclosed herein aim to at least solve one of the technical problems existing in the prior art, and provide a self-inhibition system and method for cracks in solid waste thermal storage bodies.

[0004] One aspect of this disclosure provides a self-inhibition system for cracks in solid waste thermal storage bodies, the system comprising a GMI sensor array, a carrier migration monitoring module, a computer, and an electro-hydraulic power micro-jet device; The GMI sensor array is non-contactly installed on the solid waste thermal storage body to monitor the impedance change caused by the change in dislocation density at the crack tip of the solid waste thermal storage body. The carrier migration monitoring module is electrically connected to the GMI sensor array and is used to collect impedance change data of the GMI sensor array and calculate the dislocation density distribution data at the crack tip of the solid waste thermal storage body. The computer is electrically connected to the carrier migration monitoring module and is used to generate micro-jet control commands based on the dislocation density distribution data; The electrohydrodynamic micro-jetting device is electrically connected to the high-voltage power supply and the computer, respectively, and is used to non-contactly spray repair agent onto the cracked area of ​​the solid waste thermal storage body according to the micro-jetting control command.

[0005] Furthermore, the excitation source of the GMI sensor array is a planar coil; The planar coil operates at a temperature greater than or equal to 900°C, its dimensions are matched to the solid waste heat storage body, and its axis is perpendicular to the radial direction of the solid waste heat storage body.

[0006] Furthermore, the electrohydrodynamic micro-jet device includes a ring electrode array, a nozzle, and a helium tank; The annular electrode array is composed of multiple annular metal electrodes, and each annular metal electrode is circumferentially and non-contactly disposed on the solid waste thermal storage body at equal intervals. The nozzle is installed between every two annular electrodes for spraying the repair agent; The helium tank is connected to the nozzle and is used to suspend the repair agent.

[0007] Furthermore, the repair agent is a suspension formed by dispersing alumina nanoparticles in ethylene glycol.

[0008] Furthermore, the carrier migration monitoring module includes a data acquisition module and a carrier migration calculation module; The data acquisition module is used to acquire impedance change data of the GMI sensor array; The carrier migration calculation module is used to perform numerical simulation calculations based on the impedance change data to obtain the dislocation density distribution data at the crack tip of the solid waste thermal storage body.

[0009] Furthermore, the computer is configured to: Receive the dislocation density distribution data calculated by the carrier migration monitoring module; A primary warning is issued when the Kirkendall effect coefficient inside the solid waste thermal storage body is less than 0.0001. When the dislocation density is greater than 210 dislocations / cm 2 At the same time, a secondary warning is issued, the cracked area of ​​the solid waste thermal storage body is located, and the electrohydrodynamic micro-jet device is controlled to spray the repair agent into the cracked area in a non-contact manner.

[0010] Furthermore, the carrier migration monitoring module is also used to normalize the changes in potential difference and impedance of the solid waste thermal storage body to obtain the relative changes.

[0011] Furthermore, the computer is used to control the high-voltage power supply to apply an alternating voltage to the annular electrode array of the electro-hydraulic micro-jet device at a specific frequency, so as to generate an alternating magnetic field on the surface of the solid waste thermal storage body and drive the spraying of the remediation agent.

[0012] Furthermore, the solid waste thermal storage body is prepared from blast furnace dust and sludge, and its main components are SiO-CaO-Al2O3 or Fe2O3-CaO systems.

[0013] Another aspect of this disclosure provides a method for self-inhibition of cracks in solid waste thermal storage bodies, based on the aforementioned self-inhibition system for solid waste thermal storage bodies, the method comprising: S1. Place the solid waste heat storage body in a constant temperature box and heat it to 900℃; S2. Monitor the impedance change of the solid waste thermal storage body using the GMI sensor array; S3. The impedance change data of the GMI sensor array is collected through the carrier migration monitoring module, and the dislocation density distribution data at the crack tip of the solid waste thermal storage body is calculated. S4. Based on the dislocation density distribution data, determine whether a preset repair threshold has been reached; if the repair threshold has been reached, locate the cracked area of ​​the solid waste thermal storage body and control the electrohydrodynamic micro-jet device to non-contactly spray the repair agent onto the cracked area.

[0014] This disclosure discloses a self-inhibition system and method for cracks in solid waste thermal storage materials. It utilizes the thermally excited carrier migration effect generated at the Fe2O3 or SiO2 interface in the solid waste material during thermal cycling at 900℃, and monitors the dislocation density at the crack tip using a non-contact GMI sensor array, achieving early warning of cracks. Simultaneously, electrohydrodynamic micro-jetting technology is used to precisely and directionally spray a repair agent to the crack site in a non-contact manner, achieving automatic crack repair. This effectively inhibits crack propagation and improves the service life and safety of the solid waste thermal storage material. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a solid waste thermal storage crack self-inhibition system according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of a GMI sensor array fitted onto a material specimen according to another embodiment of the present disclosure; Figure 3 This is a flowchart illustrating a method for self-inhibition of cracks in a solid waste thermal storage body, according to another embodiment of this disclosure. Detailed Implementation

[0016] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0017] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0018] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0019] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this disclosure. As used in this disclosure, the term "and / or" includes all combinations of any and more of the associated listed items.

[0020] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments, and the modules or processes in the drawings are not necessarily necessary for implementing this disclosure, and therefore cannot be used to limit the scope of protection of this disclosure.

[0021] like Figure 1As shown, one embodiment of this disclosure provides a self-inhibition system for cracks in a solid waste thermal storage body, including a GMI (Giant Magneto-Impedance) sensor array 100, a carrier migration monitoring module 200, a computer 300, and an Electrohydrodynamics (EHD) micro-injection device 400. The GMI sensor array 100 is non-contactly disposed in the solid waste thermal storage body 500 to monitor impedance changes caused by dislocation density variations at the crack tips. The carrier migration monitoring module 200 is electrically connected to the GMI sensor array 100 and is used to collect impedance change data from the GMI sensor array 100 and calculate dislocation density distribution data at the crack tips of the solid waste thermal storage body 500. The computer 300 is electrically connected to the carrier migration monitoring module 200 and is used to generate micro-injection control commands based on the dislocation density distribution data. The EHD micro-spraying device 400 is electrically connected to the high-voltage power supply 600 and the computer 300, respectively, and is used to non-contactly spray repair agent onto the cracked area of ​​the solid waste heat storage body 500 according to the micro-spraying control command.

[0022] Specifically, the solid waste thermal storage body (material specimen) 500 is a low-dimensional nano-metal oxide material prepared from blast furnace dust, with the main components being SiO-CaO-Al2O3 or Fe2O3-CaO systems. The carrier migration monitoring module 200 can employ a low-resolution (128 channels, 0.1 mmol / L) quantum peak type MOS series carrier mobility spectrometer (CMS), which is wired to the computer 300 and adjacent to the GMI sensor array 100. The EHD micro-jet device 400 is connected to the high-voltage power supply 600 and the computer 300 via wiring.

[0023] like Figure 2 As shown, the GMI sensor array 100 uses planar coils as the excitation source, operates at a temperature greater than or equal to 900℃, and has dimensions similar to the material specimen 500. The axis of each planar coil is perpendicular to the radial direction of the material specimen 500. The GMI sensor array 100 uses 201 stainless steel as the support material 110 to support multiple GMI probes 120. The GMI probe 120 is encapsulated by a NiCo shape memory alloy shell, and its interior consists of multiple neodymium iron boron magnetic nanoparticles arranged according to a predetermined pattern. The GMI sensor array 100 is placed in the same temperature environment as the material specimen 500, fitted onto the material specimen 500, and fixed using epoxy resin 130.

[0024] The carrier migration monitoring module 200 includes a data acquisition module and a carrier migration calculation module. The data acquisition module is used to acquire impedance change data of the GMI sensor array 100; the carrier migration calculation module is used to perform numerical simulation calculations based on the impedance change data to obtain the dislocation density distribution data at the crack tip of the material specimen 500.

[0025] The EHD micro-jetting device 400 includes a ring electrode array, a nozzle, and a helium tank. The ring electrode array consists of multiple ring-shaped metal electrodes with a diameter of 1 mm, arranged sequentially and at equal intervals around the outer side of the material specimen 500. The nozzle is installed between every two ring electrodes and sprays under external control. The helium tank is installed above the nozzle to suspend the liquid repair agent. The EHD micro-jetting device 400 uses image recognition technology to locate the crack tip and introduces helium into the cavity below the nozzle to drive the droplets carrying the repair agent through the defect area. The nozzle within the EHD micro-jetting device 400 can be adjusted in height and angle for precise directional repair of the material specimen 500. The repair agent within the EHD micro-jetting device 400 is a suspension formed by dispersing alumina nanoparticles in ethylene glycol.

[0026] When a crack appears in the material specimen 500, the impedance change data monitored by the GMI sensor array 100 is transmitted to the computer 300. The computer 300 uses finite element software to perform numerical simulation calculations to obtain the dislocation density distribution near the crack tip, and automatically selects the crack area that needs to be repaired based on the information from the computer 300. Subsequently, the computer 300 controls the high-voltage power supply 600 to apply an alternating voltage to the ring electrode array at a certain frequency, thereby generating an alternating magnetic field on the surface of the material specimen 500. The computer 300 receives the dislocation density distribution data calculated by the carrier migration monitoring module 200. When the Kirkendall Effect coefficient inside the solid waste thermal storage body 500 is less than 0.0001, it determines that the primary threshold has been reached and issues a primary warning; when the dislocation density is greater than 210 dislocations / cm³, it determines that the primary threshold has been reached and issues a primary warning. 2 When the secondary threshold is reached, a secondary warning is issued. At the same time, the cracked area of ​​the solid waste thermal storage body is located, and the electrohydrodynamic micro-jet device is controlled to spray the repair agent into the cracked area in a non-contact manner.

[0027] The potential difference and impedance change generated by carrier migration are connected to the carrier migration monitoring module 200. The relative change is obtained through normalization. The degree of relative change is characterized by the percentage change of the relative change relative to the base. The change in carrier mobility inside the material specimen 500 is calculated by fitting the computer program 300.

[0028] When testing material specimen 500, it is placed in a support dish and set on a heated sample stage in a constant temperature chamber. An electric heating device is positioned around the specimen, and the heating is controlled by a computer 300. Simultaneously, a loading extensometer is placed on a fatigue testing machine, which is controlled to apply mechanical tensile loads or stress amplitude scans to the specimen 500 according to a set strain rate. The loading extensometer uses a confocal microscope combined with a laser encoder to monitor the deformation of the specimen 500 in real time. The computer 300 collects and records the impedance change data of the GMI sensor array 100 and the deformation data of the loading extensometer, ultimately obtaining the critical strain value ε for crack self-inhibition.

[0029] The power supply model of the electric heating device is A-6301, with a maximum output voltage of 30V, a maximum output current of 1A, and a D / A conversion range of 0.001-99.999. The electric heating device consists of a three-section resistance wire and can reach a maximum temperature of 1200℃.

[0030] This disclosure discloses a self-inhibition system for cracks in solid waste thermal storage materials. By combining carrier migration spectrum monitoring and electrohydrodynamic micro-injection, it achieves active bulletproof and constriction functions for solid waste materials, applicable to self-inhibition crack propagation mechanisms under various load conditions. Employing low-dimensional nano-metal oxide materials as the thermal storage material overcomes the limitations of carrier migration spectrum monitoring technology in long-life monitoring at temperatures above 800℃, improving the lifespan assessment capability of solid waste at high service temperatures. The joint monitoring mechanism of CMS and GMI improves the accuracy and precision of crack monitoring in solid waste materials, reducing sensor installation costs and workload. The novel EHD micro-injection equipment overcomes the "repair difficulty" problem in microcrack research, achieving a low-energy, non-contact, controllable injection of additives and precise directional removal of dislocation deposits at crack tips, suitable for self-repair processes under high service temperature operating conditions in engineering structures.

[0031] like Figure 3 As shown, another embodiment of this disclosure provides a method for self-inhibition of cracks in solid waste thermal storage bodies, based on the self-inhibition system for solid waste thermal storage bodies described in the previous embodiment. The method includes: S1. Place the solid waste heat storage body in a constant temperature box and heat it to 900℃.

[0032] Specifically, the solid waste heat storage body is placed in a carrier dish and set on a heating sample stage in a constant temperature chamber. An electric heating device is placed around the material specimen, and the solid waste heat storage body is heated to 900°C and kept stable by computer control of the electric heating device.

[0033] S2. Monitor the impedance change of the solid waste thermal storage body through the GMI sensor array.

[0034] Specifically, the GMI sensor array is non-contactly fitted onto the periphery of the solid waste thermal storage body, which has been heated to 900°C, and fixed using epoxy resin. The excitation source of the GMI sensor array is a planar coil with an operating temperature ≥900°C, whose dimensions match the solid waste thermal storage body, and the axis of each planar coil is perpendicular to the radial direction of the solid waste thermal storage body. When the solid waste thermal storage body develops microcracks under thermal cycling or mechanical loading, the dislocation density at the crack tip changes, causing a change in the local electromagnetic properties of the material. The GMI sensor array, through its internal neodymium iron boron magnetic nanoparticle probe, senses the impedance change of the solid waste thermal storage body caused by this dislocation density change in real time and non-contactly, and transmits the monitored impedance signal to the carrier migration monitoring module.

[0035] S3. The impedance change data of the GMI sensor array is collected by the carrier migration monitoring module, and the dislocation density distribution data at the crack tip of the solid waste thermal storage body is calculated.

[0036] Specifically, the data acquisition unit of the carrier migration monitoring module receives and acquires the raw impedance change signal from the GMI sensor array in real time. Subsequently, the carrier migration calculation unit of the carrier migration monitoring module processes the acquired impedance change data: First, the changes in potential difference and impedance of the solid waste thermal storage body are normalized to obtain their relative changes, and the degree of relative change is characterized by the percentage of the relative change to the base. Then, based on this data, numerical simulation calculations are performed using the built-in finite element analysis software to simulate the carrier migration behavior and stress field distribution of the solid waste thermal storage body under thermo-mechanical coupling load.

[0037] The calculation model combines the intrinsic physical parameters of the solid waste thermal storage material (mainly composed of SiO-CaO-Al2O3 or Fe2O3-CaO system) at a high temperature of 900℃ to finally calculate the dislocation density distribution data near the crack tip, and then sends the distribution data to the computer.

[0038] S4. Based on the dislocation density distribution data, determine whether a preset repair threshold has been reached; if the repair threshold has been reached, locate the cracked area of ​​the solid waste thermal storage body and control the electrohydrodynamic micro-jet device to non-contactly spray the repair agent onto the cracked area.

[0039] Specifically, the computer receives dislocation density distribution data from the carrier migration monitoring module and executes preset threshold judgment logic: First, the Kirkendall effect coefficient inside the solid waste thermal storage body is calculated; when the coefficient is less than 0.0001, it is determined that the primary warning threshold has been reached, and the system issues a primary warning. Furthermore, when the dislocation density at the crack tip is detected to be greater than 210 dislocations / cm², the secondary repair threshold is determined to be reached, the system issues a secondary warning and automatically triggers the repair procedure.

[0040] After the repair procedure is triggered, the computer scans the surface of the solid waste thermal storage body using an integrated image recognition unit to precisely locate the spatial coordinates of the crack tip. Subsequently, the computer generates a micro-jetting control command, which controls a high-voltage power supply to apply an alternating voltage at a specific frequency to the annular electrode array of the electrohydrodynamic micro-jetting device, thereby generating an alternating magnetic field in a specific area on the surface of the solid waste thermal storage body. Simultaneously, the command activates a helium tank, ejecting droplets of alumina nanoparticle-containing repair agent from the nozzle.

[0041] Driven by an alternating magnetic field, the repair agent droplets are sprayed non-contactly and precisely into the located crack area, filling and repairing the dislocation accumulation at the crack tip, thereby inhibiting the further propagation of the crack.

[0042] This disclosure discloses a method for self-inhibiting cracks in solid waste thermal storage materials. By combining carrier migration spectrum monitoring and electrohydrodynamic micro-jetting, it achieves active bulletproof and constriction functions for solid waste materials, applicable to self-inhibiting crack propagation mechanisms under various load conditions. The joint monitoring mechanism of CMS and GMI improves the accuracy and precision of crack monitoring in solid waste materials, reducing sensor installation costs and workload. EHD micro-jetting overcomes the "repair difficulty" problem in microcrack research, achieving a low-energy, non-contact, controllable spraying of additives and precise directional removal of dislocation deposits at crack tips, suitable for self-repair processes under high service temperature operating conditions in engineering structures.

[0043] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A self-inhibition system for cracks in solid waste thermal storage bodies, characterized in that, The system includes a GMI sensor array, a carrier migration monitoring module, a computer, and an electrohydrodynamic micro-jet device. The GMI sensor array is non-contactly installed on the solid waste thermal storage body to monitor the impedance change caused by the change in dislocation density at the crack tip of the solid waste thermal storage body. The carrier migration monitoring module is electrically connected to the GMI sensor array and is used to collect impedance change data of the GMI sensor array and calculate the dislocation density distribution data at the crack tip of the solid waste thermal storage body. The computer is electrically connected to the carrier migration monitoring module and is used to generate micro-jet control commands based on the dislocation density distribution data; The electrohydrodynamic micro-jetting device is electrically connected to the high-voltage power supply and the computer, respectively, and is used to non-contactly spray repair agent onto the cracked area of ​​the solid waste thermal storage body according to the micro-jetting control command.

2. The solid waste thermal storage body crack self-inhibition system according to claim 1, characterized in that, The excitation source for the GMI sensor array is a planar coil; The planar coil operates at a temperature greater than or equal to 900°C, its dimensions are matched to those of the solid waste heat storage body, and its axis is perpendicular to the radial direction of the solid waste heat storage body.

3. The solid waste thermal storage body crack self-inhibition system according to claim 1, characterized in that, The electrohydrodynamic microjet device includes a ring electrode array, a nozzle, and a helium tank. The annular electrode array is composed of multiple annular metal electrodes, and each annular metal electrode is circumferentially and non-contactly disposed on the solid waste thermal storage body at equal intervals. The nozzle is installed between every two annular electrodes for spraying the repair agent; The helium tank is connected to the nozzle and is used to suspend the repair agent.

4. The solid waste thermal storage body crack self-inhibition system according to claim 3, characterized in that, The repair agent is a suspension formed by dispersing alumina nanoparticles in ethylene glycol.

5. The solid waste thermal storage body crack self-inhibition system according to claim 1, characterized in that, The carrier migration monitoring module includes a data acquisition module and a carrier migration calculation module; The data acquisition module is used to acquire impedance change data of the GMI sensor array; The carrier migration calculation module is used to perform numerical simulation calculations based on the impedance change data to obtain the dislocation density distribution data at the crack tip of the solid waste thermal storage body.

6. The solid waste thermal storage body crack self-inhibition system according to claim 5, characterized in that, The computer is configured to: Receive the dislocation density distribution data calculated by the carrier migration monitoring module; A primary warning is issued when the Kirkendall effect coefficient inside the solid waste thermal storage body is less than 0.0001. When the dislocation density is greater than 210 dislocations / cm 2 At the same time, a secondary warning is issued, the cracked area of ​​the solid waste thermal storage body is located, and the electrohydrodynamic micro-jet device is controlled to spray the repair agent into the cracked area in a non-contact manner.

7. The solid waste thermal storage body crack self-inhibition system according to claim 1, characterized in that, The carrier migration monitoring module is also used to normalize the changes in potential difference and impedance of the solid waste thermal storage body to obtain the relative changes.

8. The solid waste thermal storage body crack self-inhibition system according to claim 1, characterized in that, The computer is used to control the high-voltage power supply to apply an alternating voltage to the annular electrode array of the electro-hydraulic micro-jet device at a specific frequency, so as to generate an alternating magnetic field on the surface of the solid waste heat storage body and drive the spraying of the remediation agent.

9. The solid waste thermal storage body crack self-inhibition system according to any one of claims 1 to 8, characterized in that, The solid waste thermal storage body is prepared from blast furnace dust and sludge, and its main components are SiO-CaO-Al2O3 or Fe2O3-CaO systems.

10. A method for self-inhibiting cracks in solid waste thermal storage bodies, based on the self-inhibiting crack system for solid waste thermal storage bodies according to any one of claims 1 to 9, characterized in that, The method includes: S1. Place the solid waste heat storage body in a constant temperature box and heat it to 900℃; S2. Monitor the impedance change of the solid waste thermal storage body using the GMI sensor array; S3. The impedance change data of the GMI sensor array is collected through the carrier migration monitoring module, and the dislocation density distribution data at the crack tip of the solid waste thermal storage body is calculated. S4. Based on the dislocation density distribution data, determine whether a preset repair threshold has been reached; if the repair threshold has been reached, locate the cracked area of ​​the solid waste thermal storage body and control the electrohydrodynamic micro-jet device to non-contactly spray the repair agent onto the cracked area.

Images