A piezoelectric catalytic tube forming process suitable for water pressure self-excited reaction

Abstract

The application discloses a piezoelectric catalytic pipe forming process suitable for water pressure self-excitation reaction and relates to the field of piezoelectric catalytic pipe forming, which comprises the following steps: generating preformed base material data with uniform frequency and stable liquid by dispersing and classifying piezoelectric composite materials and adjusting the liquid; adopting limited flow channel segmentation and space positioning pressing treatment to form piezoelectric sensitive path area and flow velocity wall layer area; completing internal stress gradient distribution and structure stability treatment based on limited pressure freezing treatment and heating stretching treatment; and forming directional oscillation area and flow shape optimization area by performing pressure imprint folding pressing on the piezoelectric catalytic pipe. Through the construction of micro piezoelectric sensitive path, flow velocity response enhanced wall layer and internal stress gradient distribution in the piezoelectric catalytic pipe forming process, natural induction local deformation and continuous piezoelectric potential generation under hydrodynamic conditions are realized, so that the problems that catalytic reaction cannot be self-excited and sustained in a low-energy consumption environment are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of piezoelectric catalytic pipe forming, and more particularly to a piezoelectric catalytic pipe forming process suitable for water pressure self-excitation reaction. BACKGROUND

[0002] In piezoelectric catalytic applications, the existing piezoelectric system based on PVDF and its composite materials usually relies on external sound waves, mechanical vibration or electric field excitation to maintain continuous piezoelectric response.

[0003] However, in low-energy consumption environments without external excitation sources, such as natural water bodies in the wild, underground closed systems or slow-flow areas, traditional piezoelectric catalytic pipe bodies are difficult to induce effective structural deformation due to lack of sufficient fluid impact and external disturbance, resulting in a sharp decline in piezoelectric potential generation and a significant reduction in piezoelectric catalytic reaction rate.

[0004] Especially during long-period operation, the existing piezoelectric catalytic pipe forming process fails to adapt to micro-scale pressure changes in water power environments, further exacerbating the problem of unsustainable piezoelectric potential in low-pressure environments, severely restricting the widespread application and promotion of piezoelectric catalytic systems in wild environments, water treatment systems and closed spaces. SUMMARY

[0005] To overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a piezoelectric catalytic pipe forming process suitable for water pressure self-excitation reaction, which realizes natural induction of local deformation and continuous piezoelectric potential generation under water power conditions by constructing a micro-pressure sensitive path, a flow rate response enhanced wall layer and an internal stress gradient distribution during piezoelectric catalytic pipe forming, to solve the problem of catalytic reaction self-excitation and sustainability in low-energy consumption environments.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a piezoelectric catalytic pipe forming process suitable for water pressure self-excitation reaction, comprising:

[0007] By dispersing and classifying the piezoelectric composite material and adjusting the flow, a pre-formed substrate data with uniform frequency and stable flow is generated;

[0008] The limited flow channel segmentation and spatial positioning pressing treatment are adopted to form the pressure-sensitive path area and the flow rate wall layer area;

[0009] Based on the limited pressure freezing treatment and heating stretching treatment, the internal stress gradient distribution and structural stability treatment are completed;

[0010] By performing pressure imprint folding pressing on the piezoelectric catalytic pipe, a directional oscillation zone and a flow shape optimization zone are formed;

[0011] The piezoelectric potential starting and self-excitation maintaining relationship is analyzed by using pressure loading and potential characteristic analysis, and the piezoelectric catalytic tube is formed under the condition of water pressure self-excitation discovery.

[0012] In a preferred embodiment, the piezoelectric composite material data is executed through dispersion classification to generate dispersion data with uniform frequency; the dispersion data is executed through fluid adjustment and distribution statistics to generate pre-forming substrate data meeting the preset standards;

[0013] The pre-forming substrate data is judged whether it meets the distribution uniformity and fluid stability standards, if yes, it enters the micro-wire network structure; if no, it is reprocessed and handled.

[0014] In a preferred embodiment, the pre-forming substrate data is executed through limited flow channel forming to generate channel distribution data, and the channel distribution data is executed through spatial positioning and limited width pressing to generate piezoelectric path area and flow rate wall layer area data;

[0015] The piezoelectric path continuity of the piezoelectric path area and the wall layer uniformity of the flow rate wall layer area are judged whether they meet the standards, if yes, it enters the differential stress forming; if no, it re-executes the spatial positioning adjustment.

[0016] In a preferred embodiment, the wet forming data is executed through limited compression and limited freezing to generate the demarcation data of shrinkage zone and deformation zone, and the demarcation data is executed through heating stretching to generate stress gradient distribution data;

[0017] The stress gradient distribution data is judged whether it meets the differential rate standard, if yes, it enters the full shape annealing treatment; if no, it reprocesses and adjusts the stretching;

[0018] The differential rate judgment data is executed through slow-release annealing to generate piezoelectric catalytic tube data maintaining structural stability.

[0019] In a preferred embodiment, the piezoelectric catalytic tube data is executed through limited imprinting and folding pressing to generate oscillation zone data including folding zone and flow groove zone; the oscillation frequency and folding elasticity in the oscillation zone data are judged whether they meet the standards, if yes, it enters the stress response calibration; if no, it reprocesses and adjusts the imprinting;

[0020] The piezoelectric catalytic tube data is executed through pressure loading and deformation recording to generate piezoelectric potential data; the piezoelectric potential data is executed through characteristic analysis and curve fitting to generate pressure and piezoelectric potential response relationship data; the piezoelectric potential response relationship is judged whether it meets the starting threshold and continuous standards, if yes, it enters the heat setting to complete the piezoelectric catalytic tube forming under the condition of water pressure self-excitation discovery; if no, it reprocesses and adjusts the imprinting.

[0021] In a preferred embodiment, the wet forming data is subjected to a limited compression and a limited freezing process to generate shrinkage zone and deformation zone boundary data; the boundary data is subjected to a heating and stretching process to generate stress gradient distribution data; it is determined whether the stress gradient distribution meets a difference rate standard, if yes, a slow release annealing process is entered; if no, the stretching adjustment is reprocessed; based on this, Δσ(x, y) represents the local stress gradient change of the wet forming data at the plane coordinate position (x, y);

[0022]

[0023] wherein,

[0024] E(x, y) = E0×(1+α T ×(T(x, y)-T0))

[0025]

[0026] wherein is a spatial gradient operator; E(x, y) represents the local elastic modulus after temperature correction at position (x, y); E0 is the initial elastic modulus of the base material at the standard temperature T0; α T is the thermal-elastic coupling coefficient of the material; T(x, y) is the actual temperature distribution value of the forming body at position (x, y); T0 is the standard reference temperature; ∈(x, y) represents the linear deformation ratio at position (x, y); u(x, y) represents the deformation amount at position (x, y); L0 is the reference initial length; Γ(x, y) represents the residual stress term at position (x, y) caused by the limited freezing process.

[0027] In a preferred embodiment, the piezoelectric catalytic tube data is subjected to a limited compression and a folding pressing execution to generate oscillation zone data including a folding zone and a flow channel zone; it is determined whether the oscillation frequency and the folding elasticity in the oscillation zone data meet the standard, if yes, a stress response calibration is entered; if no, the compression adjustment is reprocessed; based on this, f(x) represents the natural oscillation frequency of the oscillation zone at position x;

[0028]

[0029] wherein,

[0030]

[0031] M f (x) = M0×(1+β s ×λ(x))

[0032] wherein K f(x) represents the local equivalent stiffness of the folded structure at position x; K0 is the initial reference stiffness of the folded structure when it is not deformed; η b is the folded thickness variation adjustment coefficient; d b (x) represents the folded thickness at position x; d0 is the reference initial folded thickness; η l is the folded angle change adjustment coefficient; θ (x) represents the folded angle at position x; M f (x) represents the local equivalent mass of the folded structure at position x; M0 represents the reference mass of the initial folded structure; β s is the deformation hysteresis influence coefficient; λ (x) represents the strain rate at position x.

[0033] In a preferred embodiment, the piezoelectric catalytic tube data is subjected to pressure loading and deformation recording to generate piezoelectric potential data; the piezoelectric potential data is subjected to characteristic analysis and curve fitting to generate pressure-piezoelectric potential relationship data; it is determined whether the piezoelectric potential relationship meets the starting threshold and the continuous standard, if yes, then it enters the heat setting, and the forming confirmation of the piezoelectric catalytic tube under the water pressure self-excitation reaction condition is completed; if not, then the pressure imprint adjustment is reprocessed; V (p) is defined as the piezoelectric potential output generated under the applied pressure p;

[0034]

[0035] wherein,

[0036]

[0037] wherein d 33 is the longitudinal piezoelectric coefficient of the piezoelectric material; σ (p) is the local stress corresponding to the applied pressure p; F (p) is the total force applied to the stress area on the surface of the piezoelectric catalytic tube; A is the stress cross-sectional area; ζ is the pressure nonlinear enhancement factor; is the stress change rate caused by the change of pressure; γ is the nonlinear enhancement index.

[0038] Technical effects and advantages of the present application:

[0039] 1. By constructing the pressure-sensitive path area, the flow rate wall layer area and the internal stress gradient distribution, combining the directional oscillation area and the flow shape optimization area, the piezoelectric catalytic tube can generate local deformation and piezoelectric potential only by relying on the water power itself without external sound wave, mechanical vibration or electric field excitation, so as to realize the self-activation and maintenance of the piezoelectric catalytic reaction in a low-energy consumption environment, and solve the problem that the prior art cannot continuously catalyze in a low-pressure environment such as field water body and underground system.

[0040] 2. By dispersing, classifying and adjusting the piezoelectric composite material, the frequency uniformity and fluid stability of the pre-formed substrate data are ensured, the controllability of the material behavior in the subsequent microstructure construction and stress-induced forming process is ensured, and the overall structural consistency and micro-scale local response synchronization of the formed body are improved;

[0041] 3. By limiting the flow channel segmentation and spatial positioning pressing, the piezoelectric sensitive path and flow velocity wall layer area are formed, which can form stable flow guiding effect and local pressure distribution regulation in actual hydrodynamic environment, enhance the micro-pressure triggering ability of natural water flow to the local area of piezoelectric catalytic pipe, and improve the piezoelectric potential starting sensitivity;

[0042] 4. By constructing internal stress gradient distribution through limited pressure freezing and heating stretching process, the piezoelectric catalytic pipe has multi-level potential energy reserve, which can release local deformation energy in sequence under the micro-stimulation of water power, and improve the adaptability and continuous piezoelectric output ability of the pipe under different flow rates and different pressure conditions;

[0043] 5. By forming directional oscillation area and flow shape optimization area through limited pressure imprinting and folding pressing, natural water flow can excite local periodic micro-oscillation in the pipe, thereby continuously triggering local periodic deformation under relatively low water pressure environment, and relatively enhancing the self-excitation and continuous ability of piezoelectric catalytic pipe under low pressure, slow flow or even static water conditions;

[0044] 6. By pressure loading and potential characteristic analysis, the quantitative mapping relationship between water pressure and piezoelectric potential response is established, and based on this, the calibration process of piezoelectric potential starting threshold and continuous output standard is performed, so that the piezoelectric catalytic pipe after forming has clear and controllable starting performance. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The method step framework flowchart of the present application.

[0046] Figure 2 The substrate preparation flowchart of the present application.

[0047] Figure 3 The micro-wire net construction flowchart of the present application.

[0048] Figure 4 The differential stress entering forming flowchart of the present application.

[0049] Figure 5 The oscillation structure forming flowchart of the present application.

[0050] Figure 6 The stress response calibration flowchart of the present application. DETAILED DESCRIPTION

[0051] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0052] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application. Figures 1-6 An embodiment of the present application is a piezoelectric catalytic pipe forming process suitable for water pressure self-excitation reaction, comprising:

[0053] The piezoelectric composite material is dispersed and classified, and the liquid is adjusted, to generate pre-formed substrate data with uniform frequency and stable liquid;

[0054] The piezoelectric sensitive path area and the flow velocity wall layer area are formed by using limited flow channel segmentation and spatial positioning pressing treatment;

[0055] The internal stress gradient distribution and structure stability treatment are completed based on the limited pressure freezing treatment and heating stretching treatment;

[0056] The directional oscillation area and the flow shape optimization area are formed by performing imprint folding pressing on the piezoelectric catalytic pipe;

[0057] The piezoelectric potential starting and self-excitation maintaining relationship is analyzed by using pressure loading and potential distribution characteristics analysis, and the piezoelectric catalytic pipe is formed under the condition of water pressure self-excitation discovery.

[0058] The piezoelectric composite material data is dispersed and classified to generate dispersed body data with uniform frequency; and the dispersed body data is subjected to liquid adjustment and distribution statistics to generate pre-formed substrate data meeting preset standards;

[0059] It is determined whether the pre-formed substrate data meets the distribution uniformity and liquid stability standards. If yes, the micro-line network is constructed; if no, the dispersion is reprocessed.

[0060] The pre-formed substrate data is subjected to limited flow channel formation to generate channel distribution data, and the channel distribution data is subjected to spatial positioning and limited width pressing to generate piezoelectric path area and flow velocity wall layer area data;

[0061] It is determined whether the piezoelectric path continuity of the piezoelectric path area and the wall layer uniformity of the flow velocity wall layer area meet the standards. If yes, the differential stress enters the forming; if no, the spatial positioning adjustment is re-executed.

[0062] The wet forming data is subjected to limited pressure and limited freezing to generate demarcation data of the shrinkage area and the deformation area, and the demarcation data is subjected to heating stretching to generate stress gradient distribution data;

[0063] determining whether the stress gradient distribution data meets the difference rate standard, if yes, entering full shape annealing treatment; if no, reprocessing tensile adjustment;

[0064] The piezoelectric catalytic tube data generated by the difference rate determination data through the slow release annealing execution maintains the structural stability of the piezoelectric catalytic tube data.

[0065] The piezoelectric catalytic tube data is executed through local imprinting and folding pressing to generate oscillation zone data including folding zone and flow channel zone; determine whether the oscillation frequency and folding elasticity in the oscillation zone data meet the standard, if yes, enter stress response calibration; if no, reprocess imprinting adjustment;

[0066] The piezoelectric potential data is generated by executing the piezoelectric catalytic tube data through pressure loading and deformation recording; the piezoelectric potential data is generated by executing the piezoelectric potential data through characteristic analysis and curve fitting; determine whether the piezoelectric potential response meets the starting threshold and duration standard, if yes, enter heat setting, complete the piezoelectric catalytic tube in the water pressure self-excitation condition of forming confirmation; if no, reprocess imprinting adjustment.

[0067] It should be noted that for the formula structure involved in the present scheme, the dimensionless term can be used as a proportional or structural adjustment factor. When combined with quantities with units, it only plays a numerical scaling role and does not introduce new physical dimensions, so it will not change or confuse the unit system of the whole expression; Such combination of "dimensionless term and quantity unit term" can be understood as the composite structure expression form commonly used in mathematical and physical modeling, which conforms to the principle of dimensional consistency and has a clear physical interpretation basis;

[0068] Secondly, in the formula structure of the present scheme, if it involves multiple variable terms with different physical units, including but not limited to time, mass or energy variables, their joint occurrence is to express the cooperative modeling relationship of multiple physical mechanisms. Each variable can be mapped by a function, combined by a ratio, or adjusted by a unit. The unit is clear, the meaning is clear, and the whole expression conforms to the principle of dimensional consistency and the common norm of engineering modeling;

[0069] In the present scheme, if the design constant, weight, adjustment factor, threshold parameter, proportion coefficient, etc. are adjusted, they are control parameters for different application environments. Their values depend on the target device configuration, data input characteristics and performance optimization goals. In the implementation phase, they are set within a reasonable range through model verification, performance constraints or engineering calibration. Although such parameters do not have a unique value, they have a clear adjustment logic and calculation path, and belong to the deterministic setting process in engineering implementation. The purpose of such setting is to ensure that the scheme has both general adaptability and reproducibility and operability, without affecting its technical clarity and implementability;

[0070] The wet forming data is processed by limited compression and limited freezing to generate shrinkage zone and deformation zone boundary data; the boundary data is processed by heating and stretching to generate stress gradient distribution data; it is judged whether the stress gradient distribution meets the difference rate standard, if yes, it enters the slow annealing process; if no, it is reprocessed and adjusted; based on this, Δσ(x, y) is defined to represent the local stress gradient change of the wet forming data at the plane coordinate position (x, y), and the unit is pascal per meter;

[0071]

[0072] Wherein,

[0073] E(x, y) = E0 × (1 + α T × (T(x, y) - T0))

[0074]

[0075] Wherein is a spatial gradient operator, the spatial gradient operator represents a set of partial derivatives along the x and y directions; E(x, y) represents the local elastic modulus after temperature correction at position (x, y), and the unit is pascal; E0 is the initial elastic modulus of the substrate at the standard temperature T0, and the unit is pascal; α T is the thermal-elastic coupling coefficient of the material, and the dimension is per kelvin (1 / K), the thermal-elastic coupling coefficient is used to describe the influence degree of temperature change on the elastic modulus; T(x, y) is the actual temperature distribution value of the forming body at position (x, y), and the unit is kelvin; T0 is the standard reference temperature, which can be the initial temperature at the beginning of forming in actual application, and the unit is kelvin; ∈(x, y) represents the linear strain ratio at position (x, y), which has no unit, and the linear strain ratio is defined as the relative change of unit length; u(x, y) represents the deformation amount at position (x, y), and the unit is meter; L0 is the reference initial length, and the unit is meter, which is used to normalize the deformation amount; Γ(x, y) represents the residual stress term at position (x, y) caused by limited freezing, and the unit is pascal.

[0076] The piezocatalytic tube data is processed by limited compression and folding compression to generate oscillation zone data including folding zone and flow channel zone; it is judged whether the oscillation frequency and folding elasticity in the oscillation zone data meet the standard, if yes, it enters the stress response calibration; if no, it is reprocessed and adjusted; based on this, f(x) is defined to represent the natural oscillation frequency of the oscillation zone at position x, and the unit is hertz;

[0077]

[0078] Wherein,

[0079]

[0080] M f (x) = M0 x (1 + β s x λ(x))

[0081] where K f (x) represents the local equivalent stiffness of the folded structure at position x, with the unit of newton per meter; K0 is the initial reference stiffness of the folded structure when it is not deformed, with the unit of newton per meter; η b is the folded thickness variation adjustment coefficient, which is used to describe the correction degree of the thickness variation on the stiffness, without unit; d b (x) represents the folded thickness at position x, with the unit of meter; d0 is the reference initial folded thickness, with the unit of meter; η l is the folded angle variation adjustment coefficient, which is used to describe the influence degree of the folded angle variation on the stiffness, without unit; θ(x) represents the folded angle at position x, with the unit of radian; M f (x) represents the local equivalent mass of the folded structure at position x, with the unit of kilogram; M0 represents the reference mass of the initial folded structure, with the unit of kilogram; β s is the deformation hysteresis influence coefficient, which is used to describe the correction degree of the strain rate on the mass, without unit; λ(x) represents the strain rate at position x, which is defined as the strain change amount per unit time, with the unit of per second.

[0082] The piezoelectric potential data is generated by executing the pressure loading and deformation recording on the piezoelectric catalytic tube data; the piezoelectric potential data is analyzed and fitted by characteristics to generate the pressure-piezoelectric potential corresponding relationship data; it is judged whether the piezoelectric potential corresponding relationship meets the starting threshold and the continuous standard, if yes, the heat setting is entered, and the forming confirmation of the piezoelectric catalytic tube under the water pressure self-excitation reaction condition is completed; if not, the pressure adjustment is reprocessed; V(p) is defined as the piezoelectric potential output generated under the applied pressure p, with the unit of volt;

[0083]

[0084] wherein,

[0085]

[0086] wherein d 33is the longitudinal piezoelectric coefficient of the piezoelectric material, with the unit of volt per pascal; sigma (p) is the local stress corresponding to the applied pressure p, with the unit of pascal; F (p) is the total force applied to the force-bearing area on the surface of the piezoelectric catalytic tube, with the unit of newton; A is the force-bearing cross-sectional area, with the unit of square meter; and zeta is the pressure nonlinearity enhancement factor, which represents the correction amplitude of the stress change rate on the piezoelectric potential response in actual application, with the unit of volt; is the stress change rate caused by the pressure change, with the unit of dimensionless; and gamma is the nonlinearity enhancement index, which is used to describe the nonlinearity influence degree of the stress change rate, without unit.

[0087] In the present application, a piezoelectric catalytic tube forming process suitable for water pressure self-activation reaction is proposed to solve the problem that the existing piezoelectric catalytic system cannot maintain self-activation reaction under low energy consumption environment. The present application proposes an innovative forming method with high coordination of structure and process. The present application solves the key problem that the piezoelectric potential generation is insufficient and the catalytic reaction is difficult to self-sustain under the condition of no external sound wave, mechanical vibration or electric field excitation by controlling the micro-particle size of the piezoelectric composite material, optimizing the flow performance, building the microstructure, inducing the stress gradient and directional implanting the oscillation characteristics.

[0088] The forming process of the present application starts from the construction of the base material stability of the piezoelectric composite material. First, the pre-formed base material data with uniform frequency and stable flow is generated through the dispersion classification and flow adjustment steps, so as to ensure that the material flow characteristics and micro-homogeneity are guaranteed in the subsequent forming process. The standardization treatment in the base material stage lays the foundation for realizing the continuity and stability of the micro-scale structure layout.

[0089] In the microstructure construction stage, the space remodeling of the pre-formed base material data is performed by using the limited flow channel segmentation and space positioning pressing process to form the piezoelectric sensitive path area and the flow velocity wall layer area. By controlling the limited scale and limited width parameters, the local pressure distribution and flow velocity gradient under the subsequent hydrodynamic condition are effectively guided to form an internal flow environment conducive to micro-pressure response. That is, the prerequisite for realizing the water flow driven deformation response mechanism is realized.

[0090] In the differential stress induction forming stage, the limited compression and limited freezing treatment is performed on the wet forming data to demarcate the boundary characteristics of the shrinkage zone and the deformation zone. Then, the heating and stretching process is applied to form the internal stress gradient distribution. Through continuous judgment of whether the stress difference rate meets the standard, the internal part of the final formed body has multi-level potential accumulation and pressure triggering potential. In this stage, the response potential for water flow pressure stimulation is embedded in the piezoelectric catalytic tube, which is the core guarantee for realizing the water pressure micro-activation mechanism in the subsequent stage.

[0091] In the oscillation structure forming stage, the directional oscillation zone and the flow field optimization area are further constructed by the localized imprinting and the folding pressing process; by controlling the structure size, thickness variation and angle variation of the folding zone, the local periodic deformation under the fluid perturbation is realized, so that the sustainable oscillation excitation is generated in the micro-scale range; the excitation sensitivity under low water flow rate is improved, and the persistence of the piezoelectric potential response is effectively prolonged;

[0092] Finally, in the stress response calibration stage, the piezoelectric catalytic tube after preliminary forming is subjected to simulated pressure loading, and the deformation and piezoelectric potential change process are recorded; through characteristic analysis and curve fitting, the relationship between pressure and piezoelectric potential is analyzed; according to the generated data, it is determined whether the piezoelectric potential starting threshold and the continuous output standard meet the design requirements; the products meeting the standard are subjected to final heat setting treatment, and the forming of the piezoelectric catalytic tube under the condition of water pressure self-excitation reaction is confirmed, so that it can rely on water power to continuously and self-activate the catalytic reaction in the low-energy environment such as natural water body and underground closed system;

[0093] The forming process of the present application adopts segmented, gradient, and multi-level response because it is difficult to meet the low threshold continuous excitation requirement of water pressure self-excitation by simply relying on substrate optimization or single structure treatment; by designing a micro-scale stress gradient in the forming body, superimposing local oscillation characteristics, and cooperating with the pressure effect path layout on the overall scale, the natural water power can be relatively optimally converted into piezoelectric deformation driving to realize "water pressure as piezoelectric excitation", without the need for complex secondary excitation equipment, thereby fundamentally solving the problems of insufficient persistence and stability in the self-sustaining catalytic reaction of the prior art.

[0094] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A piezoelectric catalytic tube forming process suitable for water pressure self-excitation reaction, comprising, characterized by: generating pre-forming substrate data with uniform frequency and stable flow by dispersing and classifying piezoelectric composite materials and adjusting the flow; forming piezo-sensitive path area and flow velocity wall layer area by using limited flow channel segmentation and spatial positioning pressing treatment; completing internal stress gradient distribution and structure stability treatment based on limited pressure freezing treatment and heating stretching treatment; forming directional oscillation area and flow shape optimization area by performing imprint folding pressing on piezoelectric catalytic tube; analyzing piezoelectric potential starting and self-sustaining relationship by using pressure loading and potential distribution characteristics analysis, and completing the forming confirmation of piezoelectric catalytic tube under water pressure self-excitation condition.

2. The piezoelectric catalytic tube forming process suitable for water pressure self-excitation reaction according to claim 1, characterized by: generating dispersoid data with uniform frequency by dispersing and classifying piezoelectric composite material data; and generating pre-forming substrate data meeting preset standards by adjusting and distributing dispersoid data; determining whether the pre-forming substrate data meets the distribution uniformity and flow stability standards, if yes, entering micro-line network construction; if no, reprocessing and handling.

3. The piezoelectric catalytic tube forming process suitable for water pressure self-excitation reaction according to claim 2, characterized by: generating channel distribution data by forming limited flow channel for pre-forming substrate data, and generating piezo-sensitive path area and flow velocity wall layer area data by spatial positioning and limited width pressing for channel distribution data; determining whether the piezo-sensitive path continuity of piezo-sensitive path area and the wall layer uniformity of flow velocity wall layer area meet the standards, if yes, entering differential stress forming; if no, re-executing spatial positioning adjustment.

4. The piezoelectric catalytic tube forming process suitable for water pressure self-excitation reaction according to claim 3, characterized by: generating demarcation data of shrinkage area and deformation area by limited pressure and freezing for wet forming data, and generating stress gradient distribution data by heating stretching for demarcation data; determining whether the stress gradient distribution data meets the differential rate standard, if yes, entering full shape annealing treatment; if no, reprocessing and adjusting stretching; generating piezoelectric catalytic tube data maintaining structural stability by slow-release annealing for differential rate determination data.

5. The piezoelectric catalytic tube forming process suitable for water pressure self-excitation reaction according to claim 4, characterized by: generating oscillation area data including folding area and flow channel area by limited imprinting and folding pressing for piezoelectric catalytic tube data; determining whether the oscillation frequency and folding elasticity in oscillation area data meet the standards, if yes, entering stress response calibration; if no, reprocessing and adjusting imprinting; The piezoelectric potential data is generated by executing pressure loading and deformation recording on the piezoelectric catalytic tube data; the piezoelectric potential data is analyzed and curve-fitted to generate pressure-piezoelectric potential relationship data; whether the piezoelectric potential relationship meets the starting threshold and the continuous standard is determined, if yes, heat setting is entered to complete the piezoelectric catalytic tube molding confirmation under the condition of water pressure self-excitation; if no, the stamping adjustment is reprocessed.

6. The piezoelectric catalytic tube molding process suitable for water pressure self-excitation reaction according to claim 5, characterized in that: The shrinkage zone and deformation zone boundary data is generated by executing limited pressure and limited freezing treatment on the wet-state molding data; the stress gradient distribution data is generated by heating and stretching the boundary data; Whether the stress gradient distribution meets the difference rate standard is determined, if yes, the slow annealing treatment is entered; if no, the stretching adjustment is reprocessed; based on this, Δσ(x, y) represents the local stress gradient change of the wet-state molding data at the plane coordinate position (x, y); Wherein, E(x, y) = E0x (1 + a T x (T(x, y) - T0)) wherein is the spatial gradient operator; E(x, y) represents the local elastic modulus at position (x, y) after temperature correction; E0is the initial elastic modulus of the substrate at standard temperature T0; a T is the thermal-elastic coupling coefficient of the material; T(x, y) is the actual temperature distribution value of the shaped body at position (x, y); T0is the standard reference temperature; ∈(x, y) represents the linear deformation ratio at position (x, y); u(x, y) represents the deformation amount at position (x, y); L0is the reference initial length; Γ(x, y) represents the residual stress term at position (x, y) caused by the limited freezing treatment.

7. The piezoelectric catalytic tube molding process suitable for water pressure self-excitation reaction according to claim 6, characterized in that: The oscillation zone data including the folding zone and the flow channel zone is generated by executing limited stamping and folding pressing on the piezoelectric catalytic tube data; Whether the oscillation frequency and the folding elasticity in the oscillation zone data meet the standard is determined, if yes, the stress response calibration is entered; if no, the stamping adjustment is reprocessed; based on this, f(x) represents the natural oscillation frequency of the oscillation zone at position x; Wherein, M f (x) = M0x (1 + β s x λ(x)) where K f (x) represents the local equivalent stiffness of the folded structure at position x; K0 is the initial reference stiffness of the folded structure when it is not deformed; η b is the folded thickness variation adjustment coefficient; d b (x) represents the folded thickness at position x; d0 is the reference initial folded thickness; η l is the folded angle variation adjustment coefficient; θ(x) represents the folded angle at position x; M f (x) represents the local equivalent mass of the folded structure at position x; M0 represents the reference mass of the initial folded structure; β s is the deformation hysteresis influence coefficient; λ(x) represents the strain rate at position x.

8. The piezoelectric catalytic tube molding process suitable for water pressure self-excitation reaction according to claim 7, characterized in that: The piezoelectric potential data is generated by executing pressure loading and deformation recording on the piezoelectric catalytic tube data; the piezoelectric potential data is analyzed and curve-fitted to generate pressure-piezoelectric potential relationship data; whether the piezoelectric potential relationship meets the starting threshold and the continuous standard is determined, if yes, heat setting is entered to complete the piezoelectric catalytic tube molding confirmation under the condition of water pressure self-excitation reaction; if no, the stamping adjustment is reprocessed; V(p) is defined as the piezoelectric potential output generated under the applied pressure p; Wherein, where d 33 is the longitudinal piezoelectric coefficient of the piezoelectric material; σ(p) is the local stress corresponding to the applied pressure p; F(p) is the total force applied on the force-bearing area of the surface of the piezoelectric catalytic tube; A is the force-bearing cross-sectional area; ζ is the pressure nonlinearity enhancement factor; is the stress change rate caused by the change in pressure; γ is the nonlinearity enhancement index.

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