Viscous particle measuring device based on coupling of front light image transmission and backlight imaging
Through the measurement device coupled with front light transmission and backlight imaging, the problem of measuring irregular size viscous particles in non-stable flow systems is solved, high-precision and robust measurement and low-sensitivity measurement of light sources are achieved, and flocculation is eliminated. The impact of
Patent Information
- Application Number
- CN202420547427.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The prior art is difficult to measure the distribution of irregularly sized viscous particles in non-stable flow systems with high accuracy, and is sensitive to light source scattering intensity and particle size refractive index/transmissibility, so it is impossible to effectively deal with the flocculation and aggregation of viscous particles.
Using a measurement device based on the coupling of front light image transmission and backlight imaging, through four subsystems: front light image transmission system, backlight image transmission system, light source transmission system and support system, combining two-dimensional restricted unidirectional degrees of freedom and three-dimensional non-limited bidirectional freedom The degree conversion generates a low-frequency and high-quality light source, decouple the flocculation and aggregation of viscous particles, realizes the joint measurement of viscous particles and non-viscoscensored particles, and corrects the overlap effect between particles through self-rate fixed sampling volume correction.
Achieve high-precision and robustness measurement of irregular particle distribution in non-stable flow systems, eliminate the spatial and temporal effect of particle size changes caused by viscous flocculation, and reduce the scattering intensity and particle size refractive index/transmissibility to light source sensitivity.
Smart Images
Figure CN222144799U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of physical models and imaging systems of viscous solid-liquid two-phase flows, and in particular to a viscous particle measuring device based on coupling of front light imaging and back light imaging. Background Art
[0002] The technology of measuring the particle size distribution and volume concentration of sticky and non-sticky particles is crucial to the protection of the natural environment and industrial production safety. It is widely used in the fields of sediment transport, fuel energy supply, paint spraying, fire engineering, food processing, civil engineering, mechanical powder metallurgy, etc. At present, a variety of non-invasive measurement equipment has been applied to many industrial scenarios and has been moderately promoted. Acoustic signal inversion can realize the conversion from the backscattering intensity of known particle size to the concentration signal to a certain extent, but it is only applicable to non-sticky particle types. For sticky particles, the spatiotemporal changes in particle size caused by flocculation and viscosity will cause the acoustic inversion frequency band and peak frequency to be inconstant. The systematic error caused by the uncertainty of the inversion process and the need for an independent calibration process are also the shortcomings of the acoustic inversion device that cannot be ignored. The other is a measurement method based on optical principles, which mainly relies on optical scattering and transmission of infrared or visible light, laser phase Doppler frequency shift, laser diffraction and direct imaging. However, the above methods are very dependent on the scattering intensity of the light source and the refractive index and transmittance of the particle size, and have extremely high requirements for the density distribution of irregular-sized particles in unsteady flow systems. Therefore, whether for theoretical research or industrial production needs, it is urgent to develop a high-precision measuring device that is suitable for both non-sticky particles and sticky particles. The device is required to have strong robustness to the irregular size distribution of particles in non-stable flow systems, and to eliminate the spatiotemporal variation effect of particle size caused by viscous flocculation, while showing low sensitivity to the scattering intensity of the light source and the refractive index / transmittance of the particle size. Utility Model Content
[0003] In view of the deficiencies of the prior art, the utility model provides a viscous particle measurement device based on the coupling of front light imaging and back light imaging. Specifically, accurate measurement of non-viscous particles is achieved through single-phase back light imaging, and the flocculation and aggregation phenomena of viscous particles are decoupled by combining multi-phase front light imaging and back light imaging to overcome the problem of size change of irregular particles in an unstable flow system. Therefore, both the viscous particles and non-viscous particles measured in the utility model device can achieve a lower dependence on the scattering intensity of the light source, the refractive index / transmittance of the particle size, etc., and can also complete the self-rate sampling volume correction to calibrate the overlapping effect between particles.
[0004] The technical solution adopted by the utility model is:
[0005] The sticky particle measuring device based on the coupling of front light imaging and back light imaging includes four subsystems: a front light imaging system, a back light imaging system, a light source transmission system and a support system; the light source transmission system is connected in series with the front light imaging system and the back light imaging system; the back light imaging system is located on the left side of the front light imaging system; the light source transmission system is located on both sides of the front light imaging system and the back light imaging system; the support system is rigidly connected to the light source transmission system, the front light imaging system and the back light imaging system. The front light imaging system and the back light imaging system respectively realize the joint measurement of non-sticky particles and sticky particles through the conversion of two-dimensional restricted unidirectional degrees of freedom and three-dimensional unrestricted bidirectional degrees of freedom; the light source transmission system generates a low-frequency high-quality light source to provide an energy basis for the operation of the front light imaging system and the back light imaging system; the support system provides a framework basis for the connection and fixation of the light source transmission system, the front light imaging system and the back light imaging system.
[0006] Furthermore, the forward light image transmission system comprises a forward image transmission box, a forward image transmission rate wave plate, a forward image transmission pressure plate, a forward two-dimensional single-sided calibration plate, a forward two-dimensional double-sided calibration plate, a forward two-dimensional single-sided guide rail, a forward two-dimensional single-sided control panel, a forward two-dimensional double-sided control panel, a forward two-dimensional double-sided guide rail, a rigid connecting pipe, a dynamic mode decomposer and a second turbulent flow stabilizing pipe; the forward image transmission box, the dynamic mode decomposer, the forward image transmission pressure plate and the forward image transmission rate wave plate need to be connected in series and fixed in sequence; the forward two-dimensional single-sided calibration plate and the forward two-dimensional double-sided calibration plate are placed parallel to each other in the forward image transmission box; the ratio of the thickness of the forward two-dimensional single-sided calibration plate and the forward two-dimensional double-sided calibration plate is 2 / 1 and the ratio of any three-dimensional degrees of freedom is 1 / 2, so as to maintain the conservation of axial angular momentum and meet the physical conditions of forward light image transmission; the material selection of the forward two-dimensional single-sided calibration plate and the forward two-dimensional double-sided calibration plate should be The coupling optical frequency band is the same as the contact force chain frequency band of the measured viscous particles; the forward two-dimensional single-sided control disk can only be rotated counterclockwise to control the forward two-dimensional single-sided guide rail; the forward two-dimensional double-sided control disk can only be rotated clockwise to control the forward two-dimensional double-sided guide rail; the forward two-dimensional single-sided guide rail and the forward two-dimensional single-sided calibration plate have the same arbitrary three-dimensional degrees of freedom; the forward two-dimensional double-sided guide rail and the forward two-dimensional double-sided calibration plate have the same arbitrary three-dimensional degrees of freedom; the forward two-dimensional single-sided guide rail and the forward two-dimensional double-sided guide rail are vertically rigidly connected; the forward two-dimensional double-sided guide rail is connected to the forward image transmission box through a rigid connecting pipe; the second turbulent flow stabilization pipe is connected to the forward image transmission box; the peak frequency of the turbulent energy density spectrum in the second turbulent flow stabilization pipe is the same as the set frequency in the dynamic mode decomposer and the forward image transmission rate wave plate; the forward image transmission pressure plate is the same as the set dynamic pressure in the dynamic mode decomposer.
[0007] Furthermore, the backlight imaging system includes an unstable flow medium box, a back imaging rate wave plate, a back imaging pressure plate, a back imaging box, a back-forward coupled image plate, a back two-dimensional single-sided calibration plate, a back two-dimensional double-sided calibration plate, a first turbulent flow stabilizing pipeline, a back two-dimensional double-sided control plate, a back two-dimensional single-sided guide rail, a back two-dimensional single-sided control plate, and a back two-dimensional double-sided guide rail; the unstable flow medium box, the back imaging rate wave plate, the back imaging pressure plate, the back imaging box, and the back-forward coupled image plate need to be connected in series and fixed in sequence; the back imaging box is divided into an upper back imaging box and a lower back imaging box; the back two-dimensional single-sided calibration plate and the back two-dimensional double-sided calibration plate are respectively arranged on the upper back imaging box. The interior of the imaging box and the lower back-facing imaging box; the back-facing two-dimensional single-sided calibration plate and the back-facing two-dimensional double-sided calibration plate are parallel to each other and perpendicular to the forward two-dimensional single-sided calibration plate and the forward two-dimensional double-sided calibration plate; the thickness ratio of the back-facing two-dimensional single-sided calibration plate and the back-facing two-dimensional double-sided calibration plate is 2 / 1 and the ratio of any three-dimensional degrees of freedom is 1 / 2, so as to maintain the conservation of axial angular momentum to meet the physical conditions of backlight imaging; the material selection of the back-facing two-dimensional single-sided calibration plate and the back-facing two-dimensional double-sided calibration plate requires that the coupled optical frequency band is the same as the non-contact force chain frequency band of the non-viscous particles being measured; the back-facing two-dimensional single-sided calibration plate and the back-facing two-dimensional double-sided calibration plate are parallel to the forward two-dimensional single-sided calibration plate and the forward two-dimensional double-sided calibration plate. The side calibration plate couples the optical frequency bands with an integer multiple of π difference, and uses multi-phase front light imaging and back light imaging to decouple the flocculation and aggregation of sticky particles, thereby overcoming the problem of size change of irregular particles in unstable flow systems; the back-facing two-dimensional single-sided control disk can only be rotated clockwise to control the back-facing two-dimensional single-sided guide rail; the back-facing two-dimensional double-sided control disk can only be rotated counterclockwise to control the back-facing two-dimensional double-sided guide rail; the back-facing two-dimensional single-sided guide rail and the back-facing two-dimensional single-sided calibration plate have the same arbitrary three-dimensional degrees of freedom; the back-facing two-dimensional double-sided guide rail and the back-facing two-dimensional double-sided calibration plate have the same arbitrary three-dimensional degrees of freedom; the back-facing two-dimensional single-sided guide rail is vertically rigidly connected to the back-facing two-dimensional double-sided guide rail; the back-facing two-dimensional single-sided guide rail It is fixedly connected to the back imaging pressure plate; the first turbulence stabilizing pipe is connected to the forward imaging rate wave plate and the back-forward coupling image plate; the peak frequency of the turbulence energy density spectrum in the first turbulence stabilizing pipe and the peak frequency of the turbulence energy density spectrum in the second turbulence stabilizing pipe satisfy the Prandtl mixing length theory relationship, and are at the same frequency as the set frequency in the back imaging rate wave plate; the back imaging pressure plate and the forward imaging pressure plate have the same set static pressure in the dynamic mode decomposer; the back-forward coupling image plate matches the image assimilation information of the backlight imaging system and the front light imaging system, so that the measured particles show low sensitivity to the scattering intensity of the light source and the particle size refractive index / transmittance.
[0008] Further, the light source transmission system includes a first light source energy assimilation conduit, a first homogenization electric bus line, a first peak frequency filter line, a first constant voltage power supply, a first laser port, a first peak frequency filter, a first pressing lens, a stable flow light source box, a first assimilation data acquisition board, a second assimilation data acquisition board, a second homogenization electric bus line, a second constant voltage power supply, a second laser port, an unstable flow light source box, a second light source energy assimilation conduit, a second peak frequency filter, a second peak frequency filter line and a second pressing lens; the stable flow light source box is connected to the second turbulent flow stabilization conduit, and the first constant voltage power supply is installed on the stable flow light source box; the first laser port and the first pressing lens are arranged in series inside the stable flow light source box; the first peak frequency filter line connects the first laser port and the first peak frequency filter; The first light source energy assimilation conduit connects the first laser port and the first assimilation data acquisition board; the first uniformization electric bus line connects the first constant voltage power supply and the first assimilation data acquisition board; the unstable flow light source box connects the unstable flow medium box, and the second constant voltage power supply is installed on the unstable flow light source box; the second laser port and the second pressing lens are arranged in series inside the unstable flow light source box; the second peak frequency filter line connects the second laser port and the second peak frequency filter; the second light source energy assimilation conduit connects the second laser port and the second assimilation data acquisition board; the second uniformization electric bus line connects the second constant voltage power supply and the second assimilation data acquisition board; the unstable flow light source box and the stable flow light source box assimilate the peak light frequency, and complete the self-rate sampling volume correction through dynamic mode decomposition, so as to calibrate the overlapping effect between particles.
[0009] Furthermore, the support system includes a stainless steel bracket, a longitudinal connecting bracket, a lightweight hollow tube, a first voltage stabilizing line and a second voltage stabilizing line; the stainless steel bracket is vertically fixed to the longitudinal connecting bracket, and the lightweight hollow tube is vertically fixed to the longitudinal connecting bracket; the stainless steel bracket is fixed on the first assimilation data acquisition board, and the lightweight hollow tube is fixed on the second assimilation data acquisition board; the first voltage stabilizing line connects the lightweight hollow tube and the longitudinal connecting bracket to keep the longitudinal pressure gradient constant; the second voltage stabilizing line connects the stainless steel bracket and the longitudinal connecting bracket to maintain the vertical pressure pulsation quasi-steady state.
[0010] Beneficial effects of the utility model:
[0011] 1. The device of the utility model has an ingenious structure, simple components and good integrity.
[0012] 2. The utility model is suitable for high-precision measurement of both non-sticky particles and sticky particles.
[0013] 3. The device of the utility model has strong robustness to the irregular size distribution of particles in the unsteady flow system, and can eliminate the spatiotemporal variation effect of particle size caused by viscous flocculation, while showing low sensitivity to the scattering intensity of the light source and the refractive index / transmittance of the particle size.
[0014] 4. The utility model can correct the overlapping effect between particles by completing the self-rate sampling volume correction. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a main structural schematic diagram of the utility model device.
[0016] In the figure: 1. Forward image transmission box, 2. First light source energy assimilation catheter, 3. First uniformization electric busbar, 4. Forward image transmission rate wave plate, 5. Forward image transmission pressure plate, 6. First laser port, 7. First peak frequency filter, 8. First pressing lens, 9. Stable flow light source box, 10. First constant voltage power supply, 11. First assimilation data acquisition board, 12. Stainless steel bracket, 13. Forward two-dimensional single-side calibration board, 14. Forward two-dimensional double-side calibration board, 15. Longitudinal connection bracket, 16. Lightweight hollow tube, 17. First voltage stabilizing line, 18. Forward two-dimensional single-side guide rail, 19. Forward two-dimensional single-side control panel, 20. Forward two-dimensional double-side control panel, 21. Forward two-dimensional double-side guide rail, 22. Second assimilation data acquisition board, 23. Second uniformization electric busbar, 24. Second constant voltage power supply, 25. Second laser port 1. The first turbulent flow stabilization pipeline, 2. The second turbulent flow stabilization pipeline, 3. The second turbulent flow stabilization pipeline, 4. The first turbulent flow stabilization pipeline, 4 ... second turbulent flow stabilization pipeline, 4. The first turbulent flow stabilization pipeline, 4. The second turbulent flow stabilization pipeline, 4. The first turbulent flow stabilization pipeline, 4. The second turbulent flow stabilization pipeline, 4. The first turbulent flow stabilization pipeline, 4. The second turbulent flow stabilization pipeline, 4. The first turbulent flow stabilization pipeline, 4. The second turbulent flow stabilization pipeline, 4. The first turbulent flow stabilization pipeline, 4. The second turbulent flow stabilization pipeline DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with the accompanying drawings.
[0018] The utility model is a sticky particle measuring device based on the coupling of front light image transmission and back light imaging, comprising four subsystems: a front light image transmission system, a back light imaging system, a light source transmission system and a supporting system.
[0019] The light source transmission system is connected in series with the front light imaging system and the back light imaging system; the back light imaging system is located on the left side of the front light imaging system; the light source transmission system is located on both sides of the front light imaging system and the back light imaging system; the support system is rigidly connected to the light source transmission system, the front light imaging system and the back light imaging system. The front light imaging system and the back light imaging system respectively realize the joint measurement of non-sticky particles and sticky particles through the conversion of two-dimensional restricted unidirectional degrees of freedom and three-dimensional unrestricted bidirectional degrees of freedom; the light source transmission system generates a low-frequency high-quality light source to provide an energy basis for the operation of the front light imaging system and the back light imaging system; the support system provides a framework basis for the connection and fixation of the light source transmission system, the front light imaging system and the back light imaging system.
[0020] The forward light image transmission system includes a forward image transmission box 1, a forward image transmission rate wave plate 4, a forward image transmission pressure plate 5, a forward two-dimensional single-sided calibration plate 13, a forward two-dimensional double-sided calibration plate 14, a forward two-dimensional single-sided guide rail 18, a forward two-dimensional single-sided control panel 19, a forward two-dimensional double-sided control panel 20, a forward two-dimensional double-sided guide rail 21, a rigid connecting pipe 47, a dynamic mode decomposer 48 and a second turbulent flow stabilization pipe 44.
[0021] The forward image transmission box 1, the dynamic mode decomposer 48, the forward image transmission pressure plate 5 and the forward image transmission rate wave plate 4 are connected in series and fixed in sequence; the forward two-dimensional single-sided calibration plate 13 and the forward two-dimensional double-sided calibration plate 14 are placed parallel to each other in the forward image transmission box 1; the thickness ratio of the forward two-dimensional single-sided calibration plate 13 and the forward two-dimensional double-sided calibration plate 14 is 2 / 1 and the ratio of any three-dimensional degrees of freedom is 1 / 2, so as to maintain the conservation of axial angular momentum and meet the physical conditions of forward light transmission; the material selection of the forward two-dimensional single-sided calibration plate 13 and the forward two-dimensional double-sided calibration plate 14 requires that the coupling optical frequency band is the same as the contact force chain frequency band of the measured viscous particles.
[0022] The forward two-dimensional single-sided control disk 19 can only be rotated counterclockwise to control the forward two-dimensional single-sided guide rail 18; the forward two-dimensional double-sided control disk 20 can only be rotated clockwise to control the forward two-dimensional double-sided guide rail 21; the forward two-dimensional single-sided guide rail 18 and the forward two-dimensional single-sided calibration plate 13 have the same arbitrary three-dimensional degrees of freedom; the forward two-dimensional double-sided guide rail 21 and the forward two-dimensional double-sided calibration plate 14 have the same arbitrary three-dimensional degrees of freedom; the forward two-dimensional single-sided guide rail 18 is vertically rigidly connected to the forward two-dimensional double-sided guide rail 21; the forward two-dimensional double-sided guide rail 21 is connected to the forward image transmission box 1 through a rigid connecting tube 47.
[0023] The second turbulence stabilizing flow duct 44 is connected to the forward image transmission box 1; the peak frequency of the turbulence energy density spectrum in the second turbulence stabilizing flow duct 44 is the same as the set frequency in the dynamic mode decomposer 48 and the forward image transmission rate wave plate 4; the forward image transmission isostatic pressure plate 5 is the same as the set dynamic pressure in the dynamic mode decomposer 48.
[0024] The backlight imaging system includes an unstable flow medium box 31, a back-facing imaging rate wave plate 32, a back-facing imaging pressure plate 33, a lower back-facing imaging box 34, a back-forward coupling image plate 35, a back-facing two-dimensional single-sided calibration plate 36, a back-facing two-dimensional double-sided calibration plate 37, an upper back-facing imaging box 38, a first turbulent flow stabilizing pipe 39, a back-facing two-dimensional double-sided control disk 40, a back-facing two-dimensional single-sided guide rail 41, a back-facing two-dimensional single-sided control disk 42, and a back-facing two-dimensional double-sided guide rail 43.
[0025] The unsteady flow medium box 31, the back imaging rate wave plate 32, the back imaging pressure plate 33, the upper back imaging box 38, the lower back imaging box 34, and the back-forward coupling image plate 35 are sequentially connected in series; the back imaging box is divided into an upper back imaging box 38 and a lower back imaging box 34; the back two-dimensional single-side calibration plate 36 and the back two-dimensional double-side calibration plate 37 are respectively arranged inside the upper back imaging box 38 and the lower back imaging box 34; the back two-dimensional single-side calibration plate 36 and the back two-dimensional double-side calibration plate 37 are parallel to each other and perpendicular to the forward two-dimensional single-side calibration plate 13 and the forward two-dimensional double-side calibration plate 14; the back two-dimensional single-side calibration plate 36 and the back two-dimensional double-side calibration plate 3 7 thickness ratio is 2 / 1 and the ratio of any three-dimensional degrees of freedom is 1 / 2, so as to maintain the conservation of axial angular momentum and meet the physical conditions of backlight imaging; the material selection of the back-facing two-dimensional single-sided calibration plate 36 and the back-facing two-dimensional double-sided calibration plate 37 requires that the coupling optical frequency band is the same as the non-contact force chain frequency band of the non-viscous particles being measured; the coupling optical frequency band of the back-facing two-dimensional single-sided calibration plate 36 and the back-facing two-dimensional double-sided calibration plate 37 differs from the forward two-dimensional single-sided calibration plate 13 and the forward two-dimensional double-sided calibration plate 14 by an integer multiple of π, and the flocculation and aggregation phenomena of the viscous particles are decoupled by multi-phase front light transmission and backlight imaging, thereby overcoming the problem of size change of irregular particles in an unstable flow system.
[0026] The back-facing two-dimensional single-sided control disk 42 can only be manually rotated clockwise to control the back-facing two-dimensional single-sided guide rail 41; the back-facing two-dimensional double-sided control disk 40 can only be manually rotated counterclockwise to control the back-facing two-dimensional double-sided guide rail 43; the back-facing two-dimensional single-sided guide rail 41 and the back-facing two-dimensional single-sided calibration plate 36 have the same arbitrary three-dimensional degrees of freedom; the back-facing two-dimensional double-sided guide rail 43 and the back-facing two-dimensional double-sided calibration plate 37 have the same arbitrary three-dimensional degrees of freedom; the back-facing two-dimensional single-sided guide rail 41 is vertically rigidly connected to the back-facing two-dimensional double-sided guide rail 43; the back-facing two-dimensional single-sided guide rail 41 is fixedly connected to the back imaging pressure plate 33.
[0027] The first turbulence stabilizing duct 39 is connected to the forward imaging rate wave plate 4 and the back-forward coupling image plate 35; the peak frequency of the turbulence energy density spectrum in the first turbulence stabilizing duct 39 and the peak frequency of the turbulence energy density spectrum in the second turbulence stabilizing duct 44 satisfy the Prandtl mixing length theory relationship, and are at the same frequency as the set frequency in the back imaging rate wave plate 32; the back imaging pressure plate 33 and the forward imaging pressure plate 5 have the same set static pressure in the dynamic mode decomposer 48; the back-forward coupling image plate 35 matches the image assimilation information of the backlight imaging system and the front light imaging system, so that the measured particles show low sensitivity to the scattering intensity of the light source and the particle size refractive index / transmittance.
[0028] The light source transmission system includes a first light source energy assimilation catheter 2, a first uniform electric bus line 3, a first peak frequency filter line 45, a first constant voltage power supply 10, a first laser port 6, a first peak frequency filter 7, a first pressing lens 8, a stable flow light source box 9, a first assimilation data acquisition board 11, a second assimilation data acquisition board 22, a second uniform electric bus line 23, a second constant voltage power supply 24, a second laser port 25, an unstable flow light source box 27, a second light source energy assimilation catheter 28, a second peak frequency filter 29, a second peak frequency filter line 30 and a second pressing lens 46.
[0029] The stable flow light source box 9 is connected to the second turbulent stable flow pipeline 44, and the first constant voltage power supply 10 is installed on the stable flow light source box 9; the first laser port 6 and the first pressing lens 8 are arranged in series inside the stable flow light source box 9; the first peak frequency filter line 45 connects the first laser port 6 and the first peak frequency filter 7; the first light source energy assimilation catheter 2 connects the first laser port 6 and the first assimilation data acquisition board 11; the first uniformization electric bus line 3 connects the first constant voltage power supply 10 and the first assimilation data acquisition board 11.
[0030] The unstable flow light source box 27 is connected to the unstable flow medium box 31, and the second constant voltage power supply 24 is installed on the unstable flow light source box 27; the second laser port 25 and the second pressing lens 46 are arranged in series inside the unstable flow light source box 27; the second peak frequency filter line 30 connects the second laser port 25 and the second peak frequency filter 29; the second light source energy assimilation catheter 28 connects the second laser port 25 and the second assimilation data acquisition board 22; the second uniformization electric bus line 23 connects the second constant voltage power supply 24 and the second assimilation data acquisition board 22.
[0031] The unsteady flow light source box 27 assimilates the peak light frequency with the steady flow light source box 9, and completes the self-rate sampling volume correction through dynamic mode decomposition, so as to calibrate the overlapping effect between particles.
[0032] The supporting system includes a stainless steel support 12 , a longitudinal connecting support 15 , a lightweight hollow tube 16 , a first voltage stabilizing line 17 and a second voltage stabilizing line 26 .
[0033] The stainless steel bracket 12 is vertically fixed to the longitudinal connecting bracket 15, and the lightweight hollow tube 16 is vertically fixed to the longitudinal connecting bracket 15; the stainless steel bracket 12 is fixed on the first assimilation data acquisition board 11, and the lightweight hollow tube 16 is fixed on the second assimilation data acquisition board 22; the first voltage stabilizing line 17 connects the lightweight hollow tube 16 and the longitudinal connecting bracket 15 to keep the longitudinal pressure gradient constant; the second voltage stabilizing line 26 connects the stainless steel bracket 12 and the longitudinal connecting bracket 15 to keep the vertical pressure pulsation quasi-steady state.
[0034] In the description of the present invention, it should be understood that the terms "inside", "side", "vertical", "upper", "lower", "front", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0035] In the present invention, unless otherwise clearly defined and limited, the terms "disposed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] The above description of the present invention is only a preferred embodiment, which does not limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification, or direct or indirect application in the technical field of other related products, are included in the protection scope of the present invention.
Claims
1. A sticky particle measuring device based on the coupling of front light image transmission and back light imaging, characterized in that: It includes a frontlight imaging system, a backlight imaging system, a light source transmission system and a support system; the light source transmission system is connected in series with the frontlight imaging system and the backlight imaging system; the backlight imaging system is located on the left side of the frontlight imaging system; the light source transmission system is located on both sides of the frontlight imaging system and the backlight imaging system; the support system is rigidly connected to the light source transmission system, the frontlight imaging system and the backlight imaging system; the frontlight imaging system and the backlight imaging system respectively realize the joint measurement of non-sticky particles and sticky particles through the conversion of two-dimensional restricted unidirectional degrees of freedom and three-dimensional unrestricted bidirectional degrees of freedom; the light source transmission system generates a low-frequency and high-quality light source to provide an energy basis for the operation of the frontlight imaging system and the backlight imaging system; the support system provides a framework basis for the connection and fixation of the light source transmission system, the frontlight imaging system and the backlight imaging system.
2. The sticky particle measuring device based on the coupling of front light imaging and back light imaging according to claim 1 is characterized in that: The forward light image transmission system comprises a forward image transmission box, a forward image transmission rate wave plate, a forward image transmission pressure plate, a forward two-dimensional single-side calibration plate, a forward two-dimensional double-side calibration plate, a forward two-dimensional single-side guide rail, a forward two-dimensional single-side control plate, a forward two-dimensional double-side control plate, a forward two-dimensional double-side guide rail, a rigid connecting pipe, a dynamic mode decomposer and a second turbulent flow stabilizing pipe; the forward image transmission box, the dynamic mode decomposer, the forward image transmission pressure plate and the forward image transmission rate wave plate are sequentially connected in series and fixed; the forward two-dimensional single-side calibration plate and the forward two-dimensional double-side calibration plate are placed in parallel in the forward image transmission box; the ratio of the thickness of the forward two-dimensional single-side calibration plate and the forward two-dimensional double-side calibration plate is 2 / 1 and the ratio of any three-dimensional degrees of freedom is 1 / 2; the forward two-dimensional single-sided control panel can only be rotated counterclockwise to control the forward two-dimensional single-sided guide rail; the forward two-dimensional double-sided control panel can only be rotated clockwise to control the forward two-dimensional double-sided guide rail; the forward two-dimensional single-sided guide rail is vertically rigidly connected to the forward two-dimensional double-sided guide rail; the forward two-dimensional double-sided guide rail is connected to the forward image transmission box through a rigid connecting pipe; the second turbulent flow stabilization pipe is connected to the forward image transmission box; the peak frequency of the turbulent energy density spectrum in the second turbulent flow stabilization pipe is the same as the set frequency in the dynamic mode decomposer and the forward image transmission rate wave plate; the forward image transmission pressure plate is the same as the set dynamic pressure in the dynamic mode decomposer.
3. The sticky particle measuring device based on front light imaging coupled with back light imaging according to claim 2 is characterized in that: The backlight imaging system comprises an unstable flow medium box, a back imaging rate wave plate, a back imaging pressure plate, a back imaging box, a back-forward coupled image plate, a back two-dimensional single-side calibration plate, a back two-dimensional double-side calibration plate, a first turbulent flow stabilizing pipeline, a back two-dimensional double-side control plate, a back two-dimensional single-side guide rail, a back two-dimensional single-side control plate, and a back two-dimensional double-side guide rail; the unstable flow medium box, the back imaging rate wave plate, the back imaging pressure plate, the back imaging box, and the back-forward coupled image plate are sequentially connected in series and fixed; the back imaging box is divided into an upper back imaging box and a lower back imaging box; the back two-dimensional single-side calibration plate and the back two-dimensional double-side calibration plate are respectively arranged inside the upper back imaging box and the lower back imaging box; the back two-dimensional single-side calibration plate and the back two-dimensional double-side calibration plate are parallel to each other and are aligned with the front imaging box. The forward two-dimensional single-sided calibration plate and the forward two-dimensional double-sided calibration plate are perpendicular to each other; the ratio of the thickness of the backward two-dimensional single-sided calibration plate and the backward two-dimensional double-sided calibration plate is 2 / 1, and the ratio of any three-dimensional degrees of freedom is 1 / 2; the backward two-dimensional single-sided control disk can only be manually rotated clockwise to control the backward two-dimensional single-sided guide rail; the backward two-dimensional double-sided control disk can only be manually rotated counterclockwise to control the backward two-dimensional double-sided guide rail; the backward two-dimensional single-sided guide rail and the backward two-dimensional single-sided calibration plate have the same arbitrary three-dimensional degrees of freedom; the backward two-dimensional double-sided guide rail and the backward two-dimensional double-sided calibration plate have the same arbitrary three-dimensional degrees of freedom; the backward two-dimensional single-sided guide rail is vertically rigidly connected to the backward two-dimensional double-sided guide rail; the backward two-dimensional single-sided guide rail is fixedly connected to the backward imaging co-pressure plate; the first turbulent flow stabilization pipeline is connected to the forward image transfer rate wave plate and the backward-forward coupling image plate.
4. The sticky particle measuring device based on front light imaging coupled with back light imaging according to claim 3 is characterized in that: The light source transmission system comprises a first light source energy assimilation conduit, a first homogenization electric bus line, a first peak frequency filter line, a first constant voltage power supply, a first laser port, a first peak frequency filter, a first pressing lens, a stable flow light source box, a first assimilation data acquisition board, a second assimilation data acquisition board, a second homogenization electric bus line, a second constant voltage power supply, a second laser port, an unstable flow light source box, a second light source energy assimilation conduit, a second peak frequency filter, a second peak frequency filter line and a second pressing lens; the stable flow light source box is connected to the second turbulent flow stabilization pipeline, and the first constant voltage power supply is installed on the stable flow light source box; the first laser port and the first pressing lens are arranged in series inside the stable flow light source box; the first The peak frequency filter line connects the first laser port and the first peak frequency filter; the first light source energy assimilation catheter connects the first laser port and the first assimilation data acquisition board; the first uniformization electric bus line connects the first constant voltage power supply and the first assimilation data acquisition board; the unstable flow light source box is connected to the unstable flow medium box, and the second constant voltage power supply is installed on the unstable flow light source box; the second laser port and the second pressing lens are arranged in series inside the unstable flow light source box; the second peak frequency filter line connects the second laser port and the second peak frequency filter; the second light source energy assimilation catheter connects the second laser port and the second assimilation data acquisition board; the second uniformization electric bus line connects the second constant voltage power supply and the second assimilation data acquisition board.
5. The sticky particle measuring device based on the coupling of front light imaging and back light imaging according to claim 4 is characterized in that: The support system includes a stainless steel bracket, a longitudinal connection bracket, a lightweight hollow tube, a first voltage stabilizing line and a second voltage stabilizing line; the stainless steel bracket is vertically fixed to the longitudinal connection bracket, and the lightweight hollow tube is vertically fixed to the longitudinal connection bracket; the stainless steel bracket is fixed to the first assimilation data acquisition board, and the lightweight hollow tube is fixed to the second assimilation data acquisition board; The first voltage-stabilizing line connects the lightweight hollow tube and the longitudinal connecting bracket; the second voltage-stabilizing line connects the stainless steel bracket and the longitudinal connecting bracket.