CN103590921B - Adjustable gel propellant three impinging jet atomization device - Google Patents

Adjustable gel propellant three impinging jet atomization device Download PDF

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Publication number
CN103590921B
CN103590921B CN201310597607.8A CN201310597607A CN103590921B CN 103590921 B CN103590921 B CN 103590921B CN 201310597607 A CN201310597607 A CN 201310597607A CN 103590921 B CN103590921 B CN 103590921B
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gas jet
jet
type
nozzle
liquid jet
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CN103590921A (en
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封锋
周亦俊
李奇
陈军
曹琪
邓寒玉
陈杰
武晓松
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Abstract

The invention discloses a kind of adjustable gel propellant three impinging jet atomization device; Comprise dish-type pedestal, liquid jet clashes into ejector filler, gas jet secondary ejector filler and gas jet three shock ejector fillers; This dish-type pedestal comprises the actuator that can be used for rearrange liquids impinging jet ejector filler spacing, liquid jet clashes into ejector filler and comprises the actuator that can be used for adjusting flow angle, and gas jet three shock ejector fillers comprise the actuator that can be used for adjusting Gas Mixing in Cross flow region axial position; The present invention is based on simple parts design to form, have liquid jet attitude height adjustable in three dimensions, the features such as liquid jet shock ejector filler annular on dish-type pedestal is uniform, can meet the requirement of multiple viscogel propellant atomization.

Description

Adjustable gel propellant three impinging jet atomization device
Technical field
The invention belongs to Solid Rocket Motor Technology field, particularly a kind of adjustable gel propellant three impinging jet atomization device.
Background technique
Gel propellant is in liquid propellant, evenly dissolve in solid particle (metal or nonmetal), the static state " tangible " generated by gelling agent and promoter effect again, and can recover liquid under certain shearing stress effect, and the mixture of close physical property can be had with former propellant agent.Gel propellant has not easily to be revealed, to impact and collision isosensitivity low, add performance advantages of higher after metal, so generate gel propellant both at home and abroad, stream becomes, and atomization and combustion characteristic, especially atomization characteristics has carried out large quantity research.
Gel propellant belongs to non-Newtonian fluid, the Main Differences of its flow characteristic in power system and Newton type fluid is that shear viscosity changes with shear rate, after shear rate reaches certain value, the shear viscosity of gel propellant will be tending towards high shear viscosity.Obtaining efficient burning to allow gel propellant must be make it have good atomizing effect, and is atomized for the bumping type of gel propellant, affects the physical property because have impinging jet angle, speed and gel propellant of gel propellant atomization.At present, gel propellant atomization research is still in the exploratory stage, the spraying image that result of study mainly obtains, not atomized special parameter (breaking length, drop size and distribution etc.) and the mathematical relationship between nozzle geometry, running parameter and gel propellant physical property.
Widely know impinger injector now, the dynamic crash mainly with bifilar jet produces atomizing effect.As the shock vortex engine of AUS research institute, the gel formula test engine of German Aerospace Center is in one's power studied all at application impinger injector by Israel.Below impinger injector wide potentiality in actual applications are all described." the shock atomising device for urea " (artificer: Christian wins of Grundfos NONOX AS of Denmark, the patent No.: 200680017160.0) be a kind of practical product being applied in chemical field, this device quotes the scheme that multiple jets clashes into, and achieves desirable atomizing effect.Although this covering device is not characteristic for gel propellant and designs, but still possess certain reference value, the first realizes the feasibility of multiple jets in a certain plane inner impact atomization scheme, and it two is the possibilities this sets of plan being applied to gel propellant.Further, also can find the deficiency of this covering device from this sets of plan: nozzle is fixed structure, the attitude of jet cannot regulate, and affects atomizing effect.The people such as the Zhang Mengzheng of Xi'an Aerospace Propulsion Institute have delivered " atomization of impinging injector gel propellant and sign " literary composition in " Push Technology " the 1st phase in 2009, three strands of formula jets are used planar with " T font " angle of impingement atomization scheme, equally, the program is also in a certain plane internal fixtion angle, cannot require free adjusting with atomization.The people such as the Wang Feng of Northwestern Polytechnical University deliver the improvement and application of atomization characteristics tests system " gel propellant flow " literary composition in " experimental technique and management " the 1st phase in 2012, this article proposes a kind of bumping type atomization test device for gel propellant, although it is dynamically adjustable that this device solves nozzle, the atomization of multiple gel propellant can be applicable to, but still Shortcomings: the liquid sheet breakup of this device to gel propellant is of low quality, can not play effective secondary-atomizing effect for tough gel propellant; In sum, how find not enough from existing device, improve that it is not enough, have for reformed AHP, and overcome existing technical deficiency and become one of heavy difficult point in current rocket motor field.
Summary of the invention
The object of the present invention is to provide one to have nozzle can be in harmonious proportion in three dimensions and can provide secondary-atomizing according to gel propellant viscosity, the adjustable gel propellant three impinging jet atomization device to gel propellant atomizing effect experimental research can be met.
The technical solution realizing the object of the invention is:
A kind of adjustable gel propellant three impinging jet atomization device, comprises pedestal, liquid jet clashes into ejector filler, gas jet secondary ejector filler and gas jet three shock ejector fillers, pedestal comprises dish-type pedestal and spacing adjustment slide block, dish-type pedestal has three chutes be uniformly distributed with 120 ° of hoops, and spacing adjustment slide block is arranged in chute, liquid jet clashes into ejector filler and comprises L-type supporting frame, angle of impingement regulates platform, nozzle fixed block, liquid jet nozzles tubes connection cover, liquid jet nozzles and liquid jet external catheter, L-type supporting frame is connected on spacing adjustment slide block respectively, angle of impingement regulates the bottom of platform to be connected on L-type supporting frame, and L-type supporting frame and spacing adjust the junction surface of slide block and regulate the junction surface of mesa base vertical with angle of impingement, nozzle fixed block is connected in the top that angle of impingement regulates platform, liquid jet nozzles tubes connection cover is placed in the through hole of nozzle fixed block, liquid jet nozzles and liquid jet external catheter are connected in the two ends of liquid jet nozzles tubes connection cover respectively, and the medial axis of the plane of rotation of liquid jet nozzles axis and dish-type pedestal is coplanar, gas jet ejector filler comprises gas jet nozzle, gas jet nozzle duct connecting sleeve, gas jet external catheter, gas jet nozzle, gas jet external catheter are connected in the two ends of gas jet nozzle duct connecting sleeve respectively, gas jet ejector filler is arranged on the medial axis of dish-type pedestal, is connected with the pedestal laying this atomising device, bumping type gas jet secondary ejector filler comprises ring holder, two guide rail, bumping type gas jet nozzle, bumping type gas jet nozzle duct connecting sleeve and bumping type gas jet external catheter, two guide rail is connected on the bus of dish-type pedestal side, ring holder and plate-like base are coaxially arranged on two guide rail, three bumping type gas jet nozzle duct connecting sleeves are evenly distributed on ring holder with 120 ° of hoops, and become 60 ° of angles with ring holder axis, bumping type gas jet nozzle and bumping type gas jet external catheter are connected in the two ends of bumping type gas jet nozzle duct connecting sleeve respectively.
The present invention compared with prior art, its remarkable advantage:
(1) the present invention is atomized as considering object with space three-dimensional bumping type, and it is adjustable to realize angle of impingement, overcomes three strands of jets in prior art and realizes in same plane, and the nonadjustable problem of angle.
(2) present invention contemplates the feature of large viscous fluid, introduce the secondary of gas participation, three atomizations, and the atomization again of two kinds of forms can be provided, one is direct-firing being atomized with the outside blending of liquid droplets, two is introduce the nebulization region that multiply air-flow knock against each other forms certain effect scope, thus obtains the comparatively ideal atomizing effect of large viscous fluid.
(3) the present invention is based on the existing component of transformation, and redesign new undertaking component, make existing component on the basis ensureing its original function feature, meet the requirement of bumping type atomization test, reduce manufacture cost.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation that pedestal of the present invention and liquid jet clash into ejector filler.
Fig. 2 is the structural representation of gas jet of the present invention three shock ejector fillers.
Fig. 3 is the present invention's adjustable gel propellant three impinging jet atomization device perspective view.
Fig. 4 is that liquid jet of the present invention clashes into ejector filler front view.
Fig. 5 is that liquid jet of the present invention clashes into ejector filler plan view.
Embodiment
A kind of adjustable gel propellant three impinging jet atomization device of the present invention, comprises pedestal, liquid jet clashes into ejector filler, gas jet secondary ejector filler and gas jet three shock ejector fillers.
Pedestal comprises dish-type pedestal 1 and spacing adjustment slide block 2, dish-type pedestal 1 has three chutes be uniformly distributed with 120 ° of hoops, and spacing adjustment slide block 2 is arranged in chute.
Liquid jet clashes into ejector filler and comprises L-type supporting frame 3, angle of impingement regulates platform 6, nozzle fixed block 5, liquid jet nozzles tubes connection cover 4, liquid jet nozzles 7 and liquid jet external catheter 14, L-type supporting frame 3 is connected on spacing adjustment slide block 2 respectively, angle of impingement regulates the bottom of platform 6 to be connected on L-type supporting frame 3, and L-type supporting frame 3 and spacing adjust the junction surface of slide block 2 and regulate the junction surface bottom platform 6 vertical with angle of impingement, nozzle fixed block 5 is connected in the top that angle of impingement regulates platform 6, liquid jet nozzles tubes connection cover 4 is placed in the through hole of nozzle fixed block 5, liquid jet nozzles 7 and liquid jet external catheter 14 are connected in the two ends of liquid jet nozzles tubes connection cover 4 respectively, and the plane of rotation of liquid jet nozzles 7 axis and the medial axis of dish-type pedestal 1 coplanar.
By the straight line motion of manipulation spacing adjustment slide block 2 at dish-type pedestal 1 radial direction and the rotation of manipulation angle of impingement adjustment platform 6 self, can control liquid jet attitude in three dimensions, thus make three strands of liquid jets form atomized drop with different angle of impingement.
Gas jet ejector filler comprises gas jet nozzle 9, gas jet nozzle duct connecting sleeve 8, gas jet external catheter 15, gas jet nozzle 9, gas jet external catheter 15 are connected in the two ends of gas jet nozzle duct connecting sleeve 8 respectively, gas jet ejector filler is arranged on the medial axis of dish-type pedestal 1, and is connected with the pedestal laying this atomising device in a standalone fashion.
Bumping type gas jet secondary ejector filler comprises ring holder 12, two guide rail 13, bumping type gas jet nozzle 11, bumping type gas jet nozzle duct connecting sleeve 10 and bumping type gas jet external catheter 16, two guide rail 13 is connected on the bus of dish-type pedestal 1 side, ring holder 12 and plate-like base 1 are coaxially arranged on two guide rail 13, three bumping type gas jet nozzle duct connecting sleeves 10 are evenly distributed on ring holder 12 with 120 ° of hoops, and become 60 ° of angles with ring holder 12 axis, bumping type gas jet nozzle 11 and bumping type gas jet external catheter 16 are connected in the two ends of bumping type gas jet nozzle duct connecting sleeve 10 respectively.
Liquid jet nozzles tubes connection cover 4 is fixed in the tapped hole of nozzle fixed block 5 with the form of being threaded.
Liquid jet external catheter 14, gas jet external catheter 15, bumping type gas jet external catheter 16 is pressure hose.
Bumping type gas jet nozzle duct connecting sleeve 10 with ring holder 12 for Type of Welding is connected.
Liquid jet nozzles 7, the material of gas jet nozzle 8 is high-temperature alloy.
Chute side is carved with scale, and spacing adjustment slide block 2 is carved graduated side in chute and is also carved with scale.
L-type supporting frame 3 and spacing adjust between slide block 2, angle of impingement regulates between platform 6 with L-type supporting frame 3, nozzle fixed block 5 regulates between platform 6 with angle of impingement and all adopts screw to be fixedly connected with.
Introducing gas jet ejector filler and bumping type gas jet secondary ejector filler are then when relying on self kinetic energy cannot obtain desirable atomizing effect for tough fluid, the mutual disturbance of larger drop formed after can adding air-flow and impinging jet, thus improve atomizing effect.Wherein, what gas jet ejector filler sprayed is single stream, and bumping type gas jet secondary ejector filler is then introducing three strands of air-flows.
In addition, adjustable according to liquid jet attitude in three dimensions, namely rum point position is adjustable, so, this fermentation devises and can be parallel to two guide rails 13 of device axis slippage by supplied gas jet three shock ejector fillers, thus according to adjustment Gas Mixing in Cross flow region, rum point position.
The present invention utilizes the shear loading characteristic of gel propellant, and gel propellant is sprayed from three nozzles, to increase its shearing speed to reduce gel propellant viscosity, thus improves atomizing effect.Utilize the gel jet of three bursts of high velocity jet to collide in space simultaneously, make its kinetic transformation become liquid sheet breakup and the energy needed for atomization, realize atomization smoothly.For the gel propellant that viscosity is larger, gas jet secondary ejector filler can be started.The high-speed gas that gas jet ejector filler is sprayed and gel impinging jet, owing to there is speed difference between gas liquid, therefore liquid will be subject to the agitation of gas and accelerate the fragmentation of liquid liquid film, thus improve atomization quality.When gel propellant viscosity increases further, can open gas jet three times ejector fillers, the liquid particles after making high-speed gas and clashing into collides again, realizes again being atomized, can greatly reduce atomizing particle diameter, to obtain satisfied atomizing effect.
Embodiment:
Composition graphs 1 ~ Fig. 5, a kind of adjustable gel propellant three impinging jet atomization device, comprises pedestal, and liquid jet clashes into ejector filler, gas jet secondary ejector filler and gas jet three shock ejector fillers.
Pedestal comprises dish-type pedestal 1, spacing adjustment slide block 2, dish-type pedestal 1 has three chutes be uniformly distributed with 120 ° of hoops, and spacing adjustment slide block 2 peace is embedded in chute.Each chute side is carved with scale, and spacing adjustment slide block 2 is carved graduated side in chute and is also carved with scale, to facilitate the move distance adjusting three spacing adjustment slide blocks 2 respectively.
Liquid jet clashes into ejector filler and comprises L-type supporting frame 3, angle of impingement adjustment platform 6, nozzle fixed block 5, liquid jet nozzles tubes connection cover 4, liquid jet nozzles 7 and liquid jet external catheter 14, L-type supporting frame 3 is connected on spacing adjustment slide block 2 in screw mode respectively, angle of impingement regulates the bottom of platform 6 to be connected on L-type supporting frame 3 in screw mode, and L-type supporting frame 3 and spacing adjust the junction surface of slide block 2 and regulate the junction surface bottom platform 6 vertical with angle of impingement; Nozzle fixed block 5 is connected in screw mode the top that angle of impingement regulates platform 6, liquid jet nozzles tubes connection cover 4 is fixed in nozzle fixed block 5 by the screw thread of self, liquid jet nozzles 7 and liquid jet external catheter 14 also respectively by screw thread be connected in liquid jet nozzles tubes connection cover 4 two ends, and the plane of rotation of liquid jet nozzles 7 axis and the medial axis of dish-type pedestal 1 coplanar.Angle of impingement regulates platform 6 to be thousand points of rotation platforms, self contains thick accurate adjustment, locking mechanism; In addition, L-type supporting frame 3, angle of impingement regulate platform 6, nozzle fixed block 5 three is designed to highly to meet the projection of liquid jet nozzles 7 axis on dish-type pedestal 1 and coincides with its radius, make the medial axis of the plane of rotation of liquid jet nozzles 7 axis and dish-type pedestal 1 coplanar.
Gas jet ejector filler comprises gas jet nozzle 9, gas jet nozzle duct connecting sleeve 8, gas jet external catheter 15; Gas jet nozzle 9, gas jet external catheter 15 are connected in the two ends of gas jet nozzle duct connecting sleeve 8 respectively, and gas jet ejector filler is arranged on the medial axis of dish-type pedestal 1, and are connected with the pedestal laying this atomising device in a standalone fashion.
Bumping type gas jet secondary ejector filler comprises ring holder 12, two guide rail 13, bumping type gas jet nozzle 11, bumping type gas jet nozzle duct connecting sleeve 10 and bumping type gas jet external catheter 16, two guide rail 13 is connected on the bus of dish-type pedestal 1 side, ring holder 12 and plate-like base 1 are coaxially arranged on two guide rail 13, three bumping type gas jet nozzle duct connecting sleeves 10 are evenly distributed on ring holder 12 with 120 ° of hoops, and become 60 ° of angles with ring holder 12 axis, bumping type gas jet nozzle 11 and bumping type gas jet external catheter 16 are connected in the two ends of bumping type gas jet nozzle duct connecting sleeve 10 respectively by screw thread.By slippage ring holder 12, namely adjustable gas jet three shock ejector fillers are blown into the region of air-flow at axial direction.
Composition graphs 1 ~ Fig. 5, main operating process of the present invention is: one, adjusts spacing adjustment slide block 2 to target location respectively and locks.Two, regulating platform 6 coarse adjustment by rotating angle of impingement, liquid jet nozzles 7 being turned to and answers angle on target, being locked by self locking knob.Three, open exterior gel conveyance conduit switch.Four, gel propellant regulating the accurate adjustment knob accurate adjustment of platform 6, three strands of gel propellants being clashed in same point, adjusts rear locking knob after spraying from liquid jet nozzles 7 by rotating angle of impingement.Five, when propellant viscosity is larger, opens external air source conveyance conduit switch, gas jet secondary ejector filler is started working.Six, when propellant viscosity is very large, can according to the rum point of liquid jet, slip ring holder 12 to correct position, then opens external air source conveyance conduit switch, gas jet three shock ejector fillers is started working.
It should be noted that in operating process that the distance between spacing adjustment slide block 2 can not be excessively near, do neither easy-to-operat angle of impingement like this and regulate platform 6; Also liquid jet external catheter 14 and dish-type pedestal 1 may be made to interfere.Should first with shallow bid jet adjustment rum point during firing test, point to be impacted is determined, then locks angle of impingement adjustment platform 6, and then provides the required jet of experiment to observe atomizing effect.
The design parameter of critical piece of the present invention is: L-type supporting frame 3 is long 95mm, high 65mm, wide 50mm, thickness of slab 20mm.Can regulate in 50mm to the 150mm distance range of the center of circle at radial direction.Conical nozzle cone angle is 25 ° to 40 °, and the size of conical nozzle cone angle is directly proportional to the size of gel propellant viscosity.When needing design gel propellant jet velocity to be 45m/s to 90m/s, the diameter of nozzle is 0.3mm to 1.5mm, and angle of impingement is 60 ° to 120 °.

Claims (7)

1. an adjustable gel propellant three impinging jet atomization device, is characterized in that: comprise pedestal, liquid jet clashes into ejector filler, gas jet ejector filler and bumping type gas jet secondary ejector filler, pedestal comprises dish-type pedestal (1) and spacing adjustment slide block (2), dish-type pedestal (1) has three chutes be uniformly distributed with 120 ° of hoops, and spacing adjustment slide block (2) is arranged in chute, liquid jet clashes into ejector filler and comprises L-type supporting frame (3), angle of impingement regulates platform (6), nozzle fixed block (5), liquid jet nozzles tubes connection cover (4), liquid jet nozzles (7) and liquid jet external catheter (14), L-type supporting frame (3) is connected in spacing adjustment slide block (2) respectively, angle of impingement regulates the bottom of platform (6) to be connected on L-type supporting frame (3), and L-type supporting frame (3) and spacing adjust the junction surface of slide block (2) and regulate the junction surface of platform (6) bottom vertical with angle of impingement, nozzle fixed block (5) is connected in the top that angle of impingement regulates platform (6), liquid jet nozzles tubes connection cover (4) is placed in the through hole of nozzle fixed block (5), liquid jet nozzles (7) and liquid jet external catheter (14) are connected in the two ends of liquid jet nozzles tubes connection cover (4) respectively, and the medial axis of the plane of rotation of liquid jet nozzles (7) axis and dish-type pedestal (1) is coplanar, gas jet ejector filler comprises gas jet nozzle (9), gas jet nozzle duct connecting sleeve (8), gas jet external catheter (15), gas jet nozzle (9), gas jet external catheter (15) are connected in the two ends of gas jet nozzle duct connecting sleeve (8) respectively, gas jet ejector filler is arranged on the medial axis of dish-type pedestal (1), is connected with the pedestal laying this atomising device, bumping type gas jet secondary ejector filler comprises ring holder (12), two guide rail (13), bumping type gas jet nozzle (11), bumping type gas jet nozzle duct connecting sleeve (10) and bumping type gas jet external catheter (16), two guide rail (13) is connected on the bus of dish-type pedestal (1) side, ring holder (12) and plate-like base (1) are coaxially arranged on two guide rail (13), three bumping type gas jet nozzle ducts connecting sleeve (10) are evenly distributed on ring holder (12) with 120 ° of hoops, and become 60 ° of angles with ring holder (12) axis, bumping type gas jet nozzle (11) and bumping type gas jet external catheter (16) are connected in the two ends of bumping type gas jet nozzle duct connecting sleeve (10) respectively.
2. one according to claim 1 adjustable gel propellant three impinging jet atomization device, is characterized in that: described liquid jet nozzles tubes connection cover (4) is fixed in the tapped hole of nozzle fixed block (5) with the form of being threaded.
3. one according to claim 1 adjustable gel propellant three impinging jet atomization device, it is characterized in that: described liquid jet external catheter (14), gas jet external catheter (15), bumping type gas jet external catheter (16) is pressure hose.
4. one according to claim 1 adjustable gel propellant three impinging jet atomization device, is characterized in that: described bumping type gas jet nozzle duct connecting sleeve (10) and ring holder (12) are connected for Type of Welding.
5. one according to claim 1 adjustable gel propellant three impinging jet atomization device, is characterized in that: described liquid jet nozzles (7), the material of gas jet nozzle is high-temperature alloy.
6. one according to claim 1 adjustable gel propellant three impinging jet atomization device, is characterized in that: described L-type supporting frame (3) and spacing adjust between slide block (2), angle of impingement regulates between platform (6) with L-type supporting frame (3), nozzle fixed block (5) regulates between platform (6) with angle of impingement and all adopts screw to be fixedly connected with.
7. one according to claim 1 adjustable gel propellant three impinging jet atomization device, is characterized in that: described chute side is carved with scale, and spacing adjustment slide block (2) is carved graduated side in chute and is also carved with scale.
CN201310597607.8A 2013-11-22 2013-11-22 Adjustable gel propellant three impinging jet atomization device Expired - Fee Related CN103590921B (en)

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CN108457768B (en) * 2017-08-30 2020-04-24 上海空间推进研究所 Direct-flow cold-wall type engine combustion chamber
CN108372495B (en) * 2018-01-22 2020-09-25 燕山大学 Six-degree-of-freedom annular tool for spaceflight cabin and carrying device
CN110685821B (en) * 2019-09-17 2020-11-06 湖北三江航天红林探控有限公司 Mutual-impact type injection plate liquid flow testing device

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