CN114857300A - Self-adaptive temperature-sensing flow regulating valve device and 3D printing method thereof - Google Patents

Self-adaptive temperature-sensing flow regulating valve device and 3D printing method thereof Download PDF

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Publication number
CN114857300A
CN114857300A CN202210449629.9A CN202210449629A CN114857300A CN 114857300 A CN114857300 A CN 114857300A CN 202210449629 A CN202210449629 A CN 202210449629A CN 114857300 A CN114857300 A CN 114857300A
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China
Prior art keywords
deformable
temperature
self
adaptive
valve device
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CN202210449629.9A
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Chinese (zh)
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CN114857300B (en
Inventor
文世峰
陈志桥
周燕
陈道兵
王晓强
史玉升
汪硕
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/80—Data acquisition or data processing
    • B22F10/85—Data acquisition or data processing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The invention discloses a self-adaptive temperature-sensing flow regulating valve device and a 3D printing method thereof, belonging to the technical field of valve and flow channel preparation, and comprising the following steps: an outer tube and N first deformable members; the outer tube comprises a first round tube, M second deformable parts and a second round tube which are connected in sequence; the M second deformable parts are connected in sequence; wherein M and N are integers which are more than or equal to 0, and M and N are not 0 at the same time; the first deformable component is assembled on the first round tube or the second round tube; the first deformable component and the second deformable component are made of nickel-titanium shape memory alloy which obtains two-way shape memory through stretching and shrinking training; the first deformable part and the second deformable part are respectively subjected to self-adaptive deformation according to the temperature of the inflowing fluid, so that the cross section area of the fluid passing through the flow passage is changed, and the flow rate is adjusted. The invention can self-adaptively adjust the flow cross section of the valve according to different temperatures, thereby realizing rapid response to fluid temperature fluctuation.

Description

Self-adaptive temperature-sensing flow regulating valve device and 3D printing method thereof
Technical Field
The invention belongs to the technical field of valve and flow channel preparation, and particularly relates to a self-adaptive temperature-sensing flow regulating valve device and a 3D printing method thereof.
Background
The temperature-sensing regulating valve is an important parameter control element for regulating and controlling medium flow, pressure and the like in the field of automatic process control. However, the traditional temperature-sensing regulating valve usually has one or more problems of complex structure, slow response speed to actual working condition change, single control temperature during working, low control precision, response delay phenomenon, single regulating capacity, low precision and the like, and in practical application, resource waste is caused while potential safety hazards are accompanied.
Taking the existing wax type thermostat as an example, the traditional temperature-sensing regulating valve device has a complex structure and slow response speed to the change of the working condition of the engine, and when the engine enters the working conditions of sudden acceleration, climbing and the like, the thermostat can not react rapidly, the temperature of the engine coolant can fluctuate greatly, and the service life and the oil consumption of the engine are not facilitated. The thermostat has response delay phenomenon in the opening and closing process, the control precision is not high, and the thermostat is frequently opened and closed during working to generate oscillation phenomenon. Meanwhile, because the traditional temperature-sensing regulating valve device cannot make quick response to the temperature fluctuation of the cooling liquid, in order to ensure that the engine works in a safety range, the working temperature of the engine can only be set to be lower, so that enough temperature allowance is reserved to ensure that the engine cannot be overheated, but the fuel economy of the engine is directly influenced due to the fact that the temperature of the cooling liquid is lower, and the energy is not saved.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides a self-adaptive temperature-sensing flow regulating valve device and a 3D printing method thereof, which are used for solving the technical problem that the prior art cannot rapidly react to fluid temperature fluctuation.
In order to achieve the above object, in a first aspect, the present invention provides an adaptive temperature-sensitive flow control valve device, comprising: an outer tube and N first deformable members;
the outer tube comprises a first round tube, M second deformable parts and a second round tube which are connected in sequence; the M second deformable parts are connected in sequence;
wherein M and N are integers which are more than or equal to 0, and M and N are not 0 at the same time;
the first deformable part is assembled on the first round pipe or the second round pipe;
the first deformable component and the second deformable component are made of nickel-titanium shape memory alloy which obtains two-way shape memory through stretching and shrinking training;
the first deformable part and the second deformable part are respectively subjected to self-adaptive deformation according to the temperature of the inflowing fluid, so that the cross section area of the fluid passing through the flow passage is changed, and the flow rate is adjusted.
Further preferably, the operating temperature of the first deformable member is adjusted by adjusting the phase transition temperature of the nickel titanium shape memory alloy of the first deformable member.
Further preferably, the N first deformable members differ in operating temperature.
Further preferably, the operating temperature of the second deformable member is adjusted by adjusting the phase transition temperature of the nickel titanium shape memory alloy of the second deformable member.
Further preferably, the operating temperatures of the M second deformable members are different.
Further preferably, the first deformable part is an arrow-shaped structure, an umbrella-shaped structure or a fan wheel structure; the extension amplitude of the arrow-shaped structure and the umbrella-shaped structure and the inclination angle of the fan blades in the fan impeller structure are correspondingly changed according to the change of the fluid temperature.
Further preferably, the second deformable part is a first tapered tube, a telescopic tube and a second tapered tube which are connected in sequence;
the large opening end of the first conical pipe is connected with the first round pipe; the telescopic pipe is in a radial telescopic pipe structure; the telescopic pipe is respectively connected with the small-opening ends of the first conical pipe and the second conical pipe; the large opening end of the second conical pipe is connected with the second circular pipe.
Further preferably, the adaptive temperature-sensing flow regulating valve device is integrally prepared by adopting a 3D printing technology or a 4D printing technology.
In a second aspect, the present invention provides a 3D printing method of the adaptive temperature-sensing flow control valve device, including the following steps:
s1, modeling the self-adaptive temperature-sensing flow regulating valve device by adopting three-dimensional modeling software based on the geometric structure information of the self-adaptive temperature-sensing flow regulating valve device to obtain a geometric model;
s2, based on the geometric model, adopting a selective laser melting molding technology to melt and mold the nickel-titanium alloy spherical powder, and printing to obtain the self-adaptive temperature-sensing flow regulating valve device;
and S3, performing stretching and shrinking training on the first deformable component and the second deformable component in the self-adaptive temperature-sensing flow regulating valve device to obtain two-way shape memory.
Further preferably, the working intervals of the first deformable member and the second deformable member are adjusted by controlling one or more of powder composition, laser power, scanning speed, powder layer thickness, scanning pitch during printing.
Generally, by the above technical solution conceived by the present invention, the following beneficial effects can be obtained:
1. the invention provides a self-adaptive temperature-sensing flow regulating valve device, wherein a first deformable part and/or a second deformable part made of nickel-titanium shape memory alloy which is obtained by a two-way shape memory through an extension and contraction training are introduced into a pipeline, and the nickel-titanium shape memory alloy is sensitive to temperature, so that the deformation of the nickel-titanium shape memory alloy can form a corresponding relation with the temperature through the extension and contraction training, and the first deformable part and/or the second deformable part can generate self-adaptive deformation according to the temperature of inflowing fluid, so that the cross section area of the fluid in a flow channel is changed, the flow is regulated, and the rapid response to the temperature fluctuation of the fluid is realized.
2. The self-adaptive temperature-sensitive flow regulating valve device provided by the invention can be designed with a plurality of first deformable parts and/or second deformable parts, and different parts are made of nickel-titanium shape memory alloy materials with different phase transition temperatures, so that the working range of the self-adaptive temperature-sensitive flow regulating valve device is greatly expanded, and the temperature regulating range is wider.
3. The self-adaptive temperature-sensing flow regulating valve device provided by the invention avoids the complicated working process of multiple steps of the temperature detection unit, the control unit and the mechanical unit in the traditional temperature-sensing regulating valve, has the advantages of extremely simple self-adaptive control function and structure, can realize flexible regulation and control of flow along with temperature, and has higher regulation and control precision.
4. In the self-adaptive temperature-sensing flow regulating valve device provided by the invention, the first deformable component is preferably of a fan blade wheel structure, when fluid passes through the fan blade wheel structure, the rotation of the fan blade wheel structure can unload the impact force of most of the fluid, and meanwhile, the phenomenon of local fluid pressure difference of the fluid passing through the fan blade wheel structure can be avoided, so that the self-adaptive temperature-sensing flow regulating valve device is safer and more reliable.
Drawings
Fig. 1 is a schematic structural diagram of a self-adaptive temperature-sensing flow rate adjusting valve device according to embodiment 1 of the present invention;
fig. 2 is a schematic view of an arrow-shaped configuration of a first deformable member provided in embodiment 1 of the present invention; wherein, (a) is an oblique view of the arrow-shaped structure in a contracted state; (b) is a front view of the arrow-shaped structure in a contracted state; (c) is a bottom view of the arrow-shaped structure in a retracted state; (d) is an oblique view of the arrow-shaped structure in the extended state; (e) is a front view of the arrow-shaped structure in an extended state; (f) is a bottom view of the arrow-shaped structure in an extended state;
FIG. 3 is a schematic view of a first deformable member provided in example 1 of the present invention in an umbrella-like configuration; wherein, (a) is an oblique view of the umbrella structure in a contracted state; (b) is a front view of the umbrella structure in a contraction state; (c) is a bottom view of the umbrella structure in a contracted state; (d) is an oblique view when the umbrella-shaped structure is in an extension state; (e) is a front view of the umbrella structure in an extension state; (f) is a bottom view of the umbrella structure in an extended state;
fig. 4 is a schematic structural view of a first deformable part provided in embodiment 1 of the present invention, which is a fan impeller; wherein, (a) is the oblique view when the fan impeller structure is in the contracting state; (b) is a front view of the fan impeller structure in a contraction state; (c) is a bottom view of the fan impeller structure in a contracted state; (d) is an oblique view of the fan blade wheel structure in an extending state; (e) is a front view of the fan blade wheel structure in an extension state; (f) is a bottom view of the fan blade wheel structure in an extension state;
fig. 5 is an oblique view of an adaptive temperature-sensitive flow rate adjusting valve device according to embodiment 1 of the present invention;
FIG. 6 is a schematic view of a second deformable member provided in an outer tube in accordance with example 1 of the present invention; wherein, (a) is an oblique view of the outer tube in a contracted state; (b) is a front view of the outer tube in a contracted state; (c) is a bottom view of the outer tube in a contracted state; (d) is an oblique view of the outer tube in the extended state; (e) is a front view of the outer tube in an extended state; (f) a bottom view of the outer tube in an extended state;
fig. 7 is an oblique view of the first deformable member (impeller structure) provided in embodiment 1 of the present invention when it is assembled to the first or second circular tube;
fig. 8 is a schematic use view of a corresponding adaptive temperature-sensing flow rate adjustment valve device according to embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Examples 1,
An adaptive temperature-sensing flow regulating valve device, as shown in fig. 1, comprises: an outer tube and N first deformable members;
the outer tube comprises a first round tube, M second deformable parts and a second round tube which are connected in sequence; the M second deformable parts are connected in sequence;
wherein M and N are integers which are more than or equal to 0, and M and N are not 0 at the same time;
when N is greater than 0, the first deformable component is assembled on the first round tube or the second round tube;
the first deformable component and the second deformable component are made of nickel-titanium shape memory alloy which obtains two-way shape memory through stretching and shrinking training;
the first deformable part and the second deformable part are respectively subjected to self-adaptive deformation according to the temperature of the inflowing fluid, so that the cross section area of the fluid passing through the flow channel is changed, and the flow rate is adjusted; the first deformable part and the second deformable part can independently adjust the cross-sectional area of fluid passing through the flow channel.
It should be noted that the operating temperature of the first deformable member may be adjusted by adjusting the phase transition temperature of the nitinol of the first deformable member. The operating temperature of the second deformable member may be adjusted by adjusting the phase transition temperature of the nickel titanium shape memory alloy of the second deformable member. In one case, the phase transition temperatures of the nickel titanium shape memory alloy at different regions within the first deformable member and the second deformable member are different, and the operating temperatures at the corresponding different regions are different; the operating temperature of the first deformable member may be adjusted by adjusting the phase transition temperature of the nickel titanium shape memory alloy at different regions within the first deformable member; the operating temperature of the second deformable member is adjusted by adjusting the phase transition temperature of the nickel titanium shape memory alloy at different regions within the second deformable member.
Specifically, the nickel-titanium shape memory alloy after molding has different components and states due to different original nickel-titanium powder and molding parameters, and the phase transition temperatures are different; in an optional embodiment, N is 1, M is 1, in this case, the adaptive temperature-sensitive flow-regulating valve device includes an outer tube and 1 first deformable component, the first deformable component is a fan wheel structure, the corresponding first deformable component molding powder has a Ni content of 50.4 at%, the selected laser melting technology is selected, and the printing parameters are laser power 300W to 400W and scanning speed: 800-: 30 μm, scanning pitch: 120 μm. At this time, the temperature range of the blades of different fan blade wheel structures in the first deformable part is one section or a plurality of sections from minus 60 ℃ to 5 ℃ due to different printing parameters, and the temperature range of the whole fan blade wheel structure is from minus 60 ℃ to 5 ℃. The second deformable part molding powder has Ni content of 49.4 at%, and the selected laser melting technology is selected, wherein the printing parameters are laser power of 300-500W and scanning speed: 800-1000mm/S, layer thickness: 30 μm, scanning pitch: 120 μm. The temperature range of different parts of the first deformable part is one or more than one section from minus 1 ℃ to 77 ℃ due to different printing parameters, and the temperature range of the whole second deformable part is from minus 1 ℃ to 77 ℃.
Preferably, the N first deformable members have different operating temperatures, so as to expand the operating temperature range of the adaptive temperature-sensitive flow control valve device.
Preferably, the operating temperatures of the M second deformable members are different, so as to expand the operating temperature range of the adaptive temperature-sensitive flow control valve device.
Further, the first deformable member is fitted to the first circular tube or the second circular tube, and the sectional area through which the fluid passes in the flow path is changed by the adaptive deformation of the first deformable member. The first deformable part can be in an arrow-shaped structure, an umbrella-shaped structure or a fan wheel structure; the extension range of the arrow-shaped structure and the umbrella-shaped structure and the inclination angle of the fan blades in the fan impeller structure are correspondingly changed according to the change of the temperature of the fluid, so that the cross section area of the fluid passing through the flow passage is changed, and the flow is adjusted. Specifically, fig. 2 is a schematic view showing the first deformable member in an arrow-shaped configuration, wherein (a) is an oblique view of the arrow-shaped configuration in a contracted state; (b) is a front view of the arrow-shaped structure in a contracted state; (c) is a bottom view of the arrow-shaped structure in a retracted state; (d) is an oblique view of the arrow-shaped structure in the extended state; (e) is a front view of the arrow-shaped structure in an extended state; (f) a bottom view of the arrow-shaped structure in an extended state. Figure 3 shows a schematic view of the first deformable element in an umbrella-like configuration; wherein, (a) is an oblique view of the umbrella structure in a contracted state; (b) is a front view of the umbrella structure in a contraction state; (c) is a bottom view of the umbrella structure in a contracted state; (d) is an oblique view when the umbrella-shaped structure is in an extension state; (e) is a front view of the umbrella structure in an extension state; (f) is a bottom view of the umbrella structure in an extended state. FIG. 4 is a schematic view of the first deformable member being a flabellum wheel structure; wherein, (a) is the oblique view when the fan impeller structure is in the contracting state; (b) is a front view of the fan impeller structure in a contraction state; (c) is a bottom view of the fan impeller structure in a contracted state; (d) is an oblique view of the fan blade wheel structure in an extending state; (e) is a front view of the fan blade wheel structure in an extension state; (f) is the bottom view of the fan blade wheel structure in the stretching state. Specifically, when the first deformable member is an arrow-shaped structure or an umbrella-shaped structure, the tip is inserted into the outer tube at the rear, and the insertion direction is the same as the direction of fluid flow; when the first deformable part is of a fan blade wheel structure, the fan blade wheel structure is directly placed in the outer tube, and the whole fan blade wheel structure can rotate along with the flow of fluid; the rotation of the fan blade wheel structure can unload the impact force of most of fluid, and meanwhile, the phenomenon of local fluid pressure difference of the fluid passing through the fan blade wheel structure can be avoided, so that the fan blade wheel structure is safer and more reliable.
Further, in an alternative embodiment, an oblique view of the adaptive temperature-sensitive flow control valve assembly is shown in FIG. 5; wherein, the first deformable part is a flabellum wheel structure; the inclination angle of the fan blades in the fan blade wheel structure is correspondingly changed according to the change of the fluid temperature. The second deformable part is a first conical pipe, an extension pipe and a second conical pipe which are connected in sequence; the large opening end of the first conical pipe is connected with the first round pipe; the telescopic pipe is in a radial telescopic pipe structure; the telescopic pipe is respectively connected with the small-mouth ends of the first conical pipe and the second conical pipe; the large opening end of the second conical pipe is connected with the second circular pipe. In particular, fig. 6 shows a schematic view of the second deformable member in the outer tube; wherein, (a) is an oblique view of the outer tube in a contracted state; (b) is a front view of the outer tube in a contracted state; (c) is a bottom view of the outer tube in a contracted state; (d) is an oblique view of the outer tube in the extended state; (e) is a front view of the outer tube in an extended state; (f) which is a bottom view of the outer tube in an extended state.
In an alternative embodiment, the fan wheel structure is directly assembled in the first tube (or in the second tube, here described as being assembled in the first tube), and its oblique view is shown in fig. 7; the fan impeller structure is formed by connecting a main shaft with the outer diameter of 80-150 mm, the inner diameter of 20-40 mm and the length of 200-300 mm with 12 fan blades with the length of 100-300 mm respectively; the outer diameters of the first circular pipe and the second circular pipe are 240-520 mm, the wall thickness is 10-30 mm, and the length is 240-400 mm. The first round pipe is connected with the large opening end of the first conical pipe; the extension tube is in a radial extension tube structure and is connected with the small-opening ends of the first conical tube and the second conical tube respectively, the size of the extension tube is 100-180 mm in outer straight side length, and the diameter of the outer circular arc is 10-50 mm. The wall thickness is 10-30 mm; the big mouth end of the second conical pipe is connected with the second circular pipe, and the length of the second conical pipe is 240-400 mm.
Preferably, the adaptive temperature-sensing flow regulating valve device is integrally prepared by adopting a 3D printing technology or a 4D printing technology.
Examples 2,
The 3D printing method of the self-adaptive temperature-sensing flow regulating valve device provided by the embodiment 1 of the invention comprises the following steps:
s1, modeling the self-adaptive temperature-sensing flow regulating valve device by adopting three-dimensional modeling software based on the geometric structure information of the self-adaptive temperature-sensing flow regulating valve device to obtain a geometric model;
specifically, the three-dimensional modeling software may be Magics, UG, pro, or other three-dimensional modeling software; in this embodiment, the obtained geometric model is saved as an STL format file;
s2, based on the geometric model, adopting a selective laser melting molding technology to melt and mold the nickel-titanium alloy spherical powder, and printing to obtain the self-adaptive temperature-sensing flow regulating valve device;
specifically, in the embodiment, the stored STL format file is input into a selective laser melting molding device, a nickel-titanium alloy material substrate is selected, sand blasting is performed after the substrate is ground flat, so that alloy powder can be uniformly spread on the substrate, a layer of nickel-titanium alloy spherical powder with the thickness of about 30 μm is uniformly spread on the substrate, and the particle size of the nickel-titanium alloy spherical powder ranges from 18 μm to 54 μm. Closing a forming cabin door in the selective laser melting forming equipment, opening a gas circulation system, injecting argon protective gas to ensure that the oxygen content in the forming cavity is lower than 200ppm, and simultaneously preheating the substrate to 100-200 ℃. When the oxygen content and the preheating temperature in the forming chamber reach set values, starting laser forming of the self-adaptive temperature-sensing flow regulating valve device, wherein the laser power is 100W-400W, the scanning speed is 300 mm/s-1000 mm/s, the powder layer thickness is 30 micrometers, and the scanning interval is 120 micrometers. And after the deformable flow channel device is formed, cutting off the deformable flow channel device from the substrate by adopting linear cutting, and carrying out sand blasting to remove surface defects.
And S3, performing extension and contraction training (preferably shape memory and super-elastic composite training process) on the first deformable component and the second deformable component in the self-adaptive temperature-sensing flow regulating valve device to obtain two-way shape memory.
Specifically, a series of extension-contraction training is carried out on the formed self-adaptive temperature-sensing flow regulating valve device by adopting external force, so that the self-adaptive temperature-sensing flow regulating valve device can obtain the two-way shape memory capability.
Preferably, the working range of the first deformable member and the second deformable member is adjusted by controlling one or more of powder composition, laser power, scanning speed, powder layer thickness, scanning pitch during printing.
It should be noted that the adaptive temperature-sensing flow regulating valve device provided by the invention can be used for regulating and controlling parameters such as medium flow, pressure and the like, has a wide application range, can be applied to a thermostat in a cooling system, and is particularly suitable for equipment such as an aerospace engine and the like with harsh use environment and strict use requirement. Taking the application to a cooling system as an example, a schematic usage diagram of a corresponding temperature-sensing-adaptive flow control valve device is shown in fig. 8, and can realize that: when the temperature is lower than the lowest set temperature, the valve device is in a contraction state or an extension state and works normally; when the temperature reaches the lowest set temperature, the valve device can self-adaptively deform to a certain degree (such as the expansion or contraction of the first conical pipe, the telescopic pipe and the second conical pipe, the expansion amplitude change of the arrow-shaped structure or the umbrella-shaped structure, or the change of the inclination angle of the fan blades) according to the temperature of the cooling liquid to change the sectional area of the flow passage, so that the water quantity entering the radiator is adjusted, the heat dissipation capacity of the cooling system is adjusted, and the engine is ensured to work in a proper temperature range. Therefore, the self-adaptive temperature-sensing flow regulating valve device has the advantages of simple structure, high response speed, self-adaptive function, high temperature sensitivity, high regulation precision, flexible regulation capacity, wide working temperature range and regulation range and more stable regulation process, the temperature of the cooling liquid can not fluctuate to a large extent in the using process, and the flow cross section of the valve can be effectively regulated according to different temperatures, so that the operation strategy can be changed according to the operation working condition of equipment, the accurate control of the flow of the cooling liquid is realized, the fuel economy of an engine is improved, and the energy-saving effect is achieved. In addition, a 3D or 4D printing advanced manufacturing technology can be adopted, the problem of integrated forming of a complex structure of the self-adaptive temperature-sensing flow regulating valve device is solved, and the device has the advantages of high forming efficiency and low forming cost; in addition, the adopted nickel-titanium shape memory alloy has the characteristics of oxidation resistance, corrosion resistance and the like, and the service life is also prolonged.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a self-adaptation temperature sensing flow control valve door gear which characterized in that includes:
an outer tube and N first deformable members;
the outer tube comprises a first round tube, M second deformable parts and a second round tube which are sequentially connected; m second deformable parts are connected in sequence;
wherein M and N are integers which are more than or equal to 0, and M and N are not 0 at the same time;
the first deformable member is fitted over the first or second tube;
the first deformable component and the second deformable component are made of nickel-titanium shape memory alloy which obtains two-way shape memory through stretching and shrinking training;
the first deformable part and the second deformable part are respectively subjected to self-adaptive deformation according to the temperature of the inflowing fluid, so that the cross section area of the fluid in the flow passage is changed, and the flow rate is adjusted.
2. The adaptive temperature sensitive flow control valve assembly of claim 1, wherein the operating temperature of the first deformable member is adjusted by adjusting the phase transition temperature of the nitinol of the first deformable member;
adjusting the operating temperature of the second deformable member by adjusting the phase transition temperature of the nickel titanium shape memory alloy of the second deformable member.
3. The adaptive temperature-sensitive flow control valve assembly of claim 2, wherein the operating temperature of the first deformable member is adjusted by adjusting the phase transition temperature of the nitinol at different regions within the first deformable member;
adjusting the operating temperature of the second deformable member by adjusting the phase transition temperature of the nickel titanium shape memory alloy at different regions within the second deformable member.
4. The adaptive temperature sensitive flow control valve assembly of claim 2 wherein the N first deformable members differ in operating temperature.
5. The adaptive temperature sensitive flow control valve assembly of claim 2 wherein the operating temperatures of the M second deformable members are different.
6. The adaptive temperature-sensitive flow control valve assembly of any one of claims 1-5, wherein the first deformable member is in the form of an arrow, umbrella, or fan-blade structure; the extending amplitude of the arrow-shaped structure and the umbrella-shaped structure and the inclination angle of the fan blades in the fan wheel structure are correspondingly changed according to the change of the fluid temperature.
7. The adaptive temperature-sensing flow regulating valve device according to any one of claims 1 to 5, wherein the second deformable member is a first tapered tube, a telescopic tube and a second tapered tube which are connected in sequence;
the large opening end of the first conical pipe is connected with the first round pipe; the telescopic pipe is in a radial telescopic pipe structure; the telescopic pipe is respectively connected with the small-opening ends of the first conical pipe and the second conical pipe; the large opening end of the second conical pipe is connected with the second circular pipe.
8. The adaptive temperature-sensing flow regulating valve device according to claim 1, wherein the device is integrally manufactured by using a 3D printing technology or a 4D printing technology.
9. The 3D printing method of the adaptive temperature-sensitive flow regulating valve device of any one of claims 1-8, comprising the steps of:
s1, modeling the self-adaptive temperature-sensing flow regulating valve device by adopting three-dimensional modeling software based on the geometric structure information of the self-adaptive temperature-sensing flow regulating valve device to obtain a geometric model;
s2, based on the geometric model, adopting a selective laser melting molding technology to melt and mold the nickel-titanium alloy spherical powder, and printing to obtain the self-adaptive temperature-sensing flow regulating valve device;
and S3, performing extension and contraction training on the first deformable component and the second deformable component in the self-adaptive temperature-sensing flow regulating valve device to obtain two-way shape memory.
10. The 3D printing method according to claim 9, wherein the working interval of the first deformable member and the second deformable member is adjusted by controlling one or more of powder composition, laser power, scanning speed, powder layer thickness, scanning pitch during printing.
CN202210449629.9A 2022-04-26 2022-04-26 Self-adaptive temperature-sensing flow regulating valve device and 3D printing method thereof Active CN114857300B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070252014A1 (en) * 2006-04-27 2007-11-01 General Electric Company Flow regulating articles and methods of manufacture
CN111842887A (en) * 2020-06-18 2020-10-30 华中科技大学 Temperature control self-deformation device based on 4D printing and preparation method thereof
CN111957966A (en) * 2020-08-28 2020-11-20 东南大学 Method for preparing nickel-titanium two-way memory deformation component and intelligent structure through 4D printing
CN112506248A (en) * 2020-11-20 2021-03-16 华中科技大学 Memory alloy component capable of deforming and recovering and device using same
CN215113352U (en) * 2021-04-06 2021-12-10 常州天目智能科技有限公司 Throttling device using memory alloy
CN113944564A (en) * 2021-09-17 2022-01-18 中国地质大学（武汉） Variable-aperture device based on 4D printing technology and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070252014A1 (en) * 2006-04-27 2007-11-01 General Electric Company Flow regulating articles and methods of manufacture
CN111842887A (en) * 2020-06-18 2020-10-30 华中科技大学 Temperature control self-deformation device based on 4D printing and preparation method thereof
CN111957966A (en) * 2020-08-28 2020-11-20 东南大学 Method for preparing nickel-titanium two-way memory deformation component and intelligent structure through 4D printing
CN112506248A (en) * 2020-11-20 2021-03-16 华中科技大学 Memory alloy component capable of deforming and recovering and device using same
CN215113352U (en) * 2021-04-06 2021-12-10 常州天目智能科技有限公司 Throttling device using memory alloy
CN113944564A (en) * 2021-09-17 2022-01-18 中国地质大学（武汉） Variable-aperture device based on 4D printing technology and preparation method thereof

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