A device for controlling liquid jet crushing

A technology of liquid jet and controller, applied in the direction of jetting device, etc., can solve the problems of inability to implement concretely, without specific disclosure of implementation scheme, device and principle, etc., and achieve the effect of good focusing effect, saving space, and improving the degree of integration

Active Publication Date: 2021-08-17
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

However, this public document does not specifically disclose the implementation plan, device and principle, etc., and cannot be implemented in detail.

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  • A device for controlling liquid jet crushing
  • A device for controlling liquid jet crushing
  • A device for controlling liquid jet crushing

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Embodiment Construction

[0022] The device for controlling liquid jet fragmentation proposed by the present invention has a structure such as figure 1 and figure 2 As shown, it includes a cavity 1 that plays an overall supporting role for the structure of the device, an outer pulse laser focusing heating system inside the cavity 1, an inner pulse laser focusing heating system, and a measurement system outside the cavity 1;

[0023] The outer layer pulse laser focusing heating system includes an outer layer pulse laser group 2, an upper layer reflector 3, an upper layer reflector mounting frame 4, a first rotation controller 5, an upper layer reflector screw rod 6, an upper layer convex lens 7, and an upper layer convex lens Mounting frame 8, second rotation controller 9, upper layer convex lens screw mandrel 10; Outer layer pulse laser group 2 is installed on the top of cavity 1 evenly along the circumference, in one embodiment of the present invention, outer layer pulse laser group 2 Contains 4 set...

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Abstract

The invention relates to the technical field of liquid jets, in particular to a device for controlling the breaking of liquid jets. The device of the present invention integrates two sets of pulsed laser focusing heating systems in the cavity, and the different pulsed laser focusing heating systems are independent of each other to perform complex synergistic pulse heating on different positions along the flow direction of the liquid jet, and synergistically excite Different forms of unstable waves induced by surface tension disturbance on the liquid jet can achieve different control effects on the breakage of the liquid jet. Multiple sets of pulsed laser groups present a circumferential distribution of inner and outer layers on the top of the cavity, and then cooperate with reflectors and convex lenses to achieve pulse-focused heating of liquid jets along different positions along the flow direction. This structural design greatly saves space and improves productivity. The degree of integration provides conditions for flexible adjustment of the pulse laser focus heating system on the position of the pulse focus heating point on the liquid jet.

Description

technical field [0001] The invention relates to the technical field of liquid jets, in particular to a device for controlling the breaking of liquid jets. Background technique [0002] Liquid jets are usually unstable and break up into droplets. Quantitative studies of this fragmentation phenomenon in liquid jets date back to the 19th century and directly led Rayleigh to develop the important tool of linear stability analysis. Long-term theoretical analysis, numerical simulation and experimental observations have shown that jet breakage is caused by the development of initial disturbance waves on the jet surface. Since the initial disturbance contains a wide range of frequencies (or wave numbers), the final breakup is the result of competition between these disturbance frequencies, unless the extremely small jet Reynolds number (a dimensionless parameter used to characterize the strength of the jet, defined as the jet velocity and the product of the jet diameter divided by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B12/08B05B12/10B05B15/00
CPCB05B12/08B05B12/082B05B12/10B05B15/00
Inventor 赵羽徐海涛
Owner TSINGHUA UNIV
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