CN115788704B - Atomizing nozzle device - Google Patents
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- CN115788704B CN115788704B CN202310082625.6A CN202310082625A CN115788704B CN 115788704 B CN115788704 B CN 115788704B CN 202310082625 A CN202310082625 A CN 202310082625A CN 115788704 B CN115788704 B CN 115788704B
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Abstract
The invention relates to the technical field of liquid rocket engine spray combustion, in particular to an atomizing nozzle device, and aims to solve the problem that the existing injection atomizing device cannot be applied to a high-pressure environment. The invention provides an atomizing nozzle device, comprising: the gas collecting cylinder, the liquid collecting cylinder, the gas path straight pipe, the liquid path component and the nozzle component are arranged on the gas collecting cylinder; the gas collecting cylinder is provided with a gas collecting cavity and is arranged above the liquid collecting cylinder; the top of the liquid collecting cylinder is inserted into the bottom of the gas collecting cylinder, and the liquid collecting cylinder is provided with a liquid collecting cavity; the gas path straight pipe penetrates through the top of the gas collecting cylinder and is configured to convey a gas medium into the gas collecting cavity; the liquid path assembly penetrates through the top of the gas collecting cylinder, the outlet end of the liquid path assembly is communicated with the liquid collecting cavity, and the liquid path assembly is configured to convey a liquid medium into the liquid collecting cavity; the gas medium in the gas collecting cavity is sprayed out from the bottom of the nozzle assembly, and the liquid medium in the liquid collecting cavity enters the nozzle assembly through the tangential holes and is sprayed out from the bottom of the nozzle assembly.
Description
Technical Field
The invention relates to the technical field of liquid rocket engine spray combustion, in particular to an atomizing nozzle device.
Background
The liquid rocket is used as an important tool for human to enter and exit space and explore universe, and the powerful power of the liquid rocket is the basic guarantee for human to carry out large-scale and high-density space activities. The nozzle is one of the key parts of the combustion chamber of the liquid rocket engine, and has important influence on the combustion performance of the engine, and the nozzle used by different liquid rocket engines has different configurations. A high-thrust liquid oxygen kerosene engine with staged combustion widely adopts a gas central coaxial centrifugal nozzle. The type of nozzle is adopted by YF-100 and YF-115 developed in China, and liquid rocket engines such as RD-170 and RD-180 developed in Russia, and the nozzle adopts liquid fuel to wrap oxygen-enriched fuel gas in the middle to prevent the oxygen-enriched fuel gas from directly impacting the wall surface of a combustion chamber.
After fuel and oxidant enter a thrust chamber of the liquid rocket engine from a propellant storage tank through a supply pipeline, a series of complex processes such as injection, atomization, evaporation, mixing, combustion and the like are required. The injection atomization is the first step of the later-stage tissue combustion of fuel and oxidant, the injection atomization process of the real liquid rocket engine is performed in a high-pressure environment, the injection atomization device is difficult to be matched with a high-pressure tank, the injection atomization research on the nozzle is mainly performed at normal pressure at present, the existing injection atomization device cannot be suitable for the high-pressure environment, and a device suitable for exploring the injection atomization process under the working environment of the real liquid rocket engine is lacked.
Disclosure of Invention
The invention aims to provide an atomizing nozzle device to solve the problem that the existing injection atomizing device cannot be applied to a high-pressure environment.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the present invention provides an atomizing nozzle device comprising: the gas collecting cylinder, the liquid collecting cylinder, the gas path straight pipe, the liquid path component and the nozzle component are arranged on the gas collecting cylinder;
the gas collecting cylinder is provided with a gas collecting cavity and is arranged above the liquid collecting cylinder;
the top of the liquid collecting cylinder is inserted into the bottom of the gas collecting cylinder, and the liquid collecting cylinder is provided with a liquid collecting cavity;
the gas path straight pipe penetrates through the top of the gas collecting cylinder and is configured to convey a gas medium to the gas collecting cavity;
the liquid path assembly penetrates through the top of the gas collecting cylinder, the outlet end of the liquid path assembly is communicated with the liquid collecting cavity, and the liquid path assembly is configured to convey a liquid medium into the liquid collecting cavity;
the nozzle assembly extends into the liquid collection cavity, the top of the nozzle assembly is communicated with the gas collection cavity, and the bottom of the nozzle assembly penetrates through the bottom of the liquid collection cylinder;
the nozzle assembly is provided with at least one tangential hole, and the bottom of the nozzle assembly is flush with the upper surface of the high-pressure atomization cabin observation window;
and the gas medium in the gas collecting cavity is sprayed out from the bottom of the nozzle assembly, and the liquid medium in the liquid collecting cavity enters the nozzle assembly through the tangential hole and is sprayed out from the bottom of the nozzle assembly.
In an alternative embodiment of the method of the present invention,
the liquid path assembly comprises a liquid path straight pipe and a liquid path adapter pipe;
the liquid path straight pipe is inserted into the top of the gas collecting cylinder;
the inlet end of the liquid path switching tube is connected with the liquid path straight tube, and the liquid path switching tube extends into the gas collecting cavity and penetrates through the top of the liquid collecting barrel.
In an alternative embodiment of the method of the present invention,
the nozzle assembly comprises a gas nozzle and a liquid nozzle;
the gas nozzle is inserted into the liquid nozzle and is coaxially arranged with the liquid nozzle;
the inlet of the gas nozzle is communicated with the gas collecting cavity, and the tangential hole is formed in the outer wall of the liquid nozzle.
In an alternative embodiment of the method of the present invention,
the atomizing nozzle device also comprises a gas collection cavity pressure measurement straight pipe;
the gas collecting cavity pressure measuring straight pipe penetrates through the top of the gas collecting cylinder and is communicated with the gas collecting cavity, and one end, far away from the gas collecting cylinder, of the gas collecting cavity pressure measuring straight pipe is connected with a first pressure sensor ball joint;
the pressure sensor ball joint is used for connecting a pressure sensor.
In an alternative embodiment of the method of the present invention,
the atomizing nozzle device also comprises a liquid collecting cavity pressure measuring assembly;
the liquid collection cavity pressure measurement assembly penetrates through the liquid collection cavity and is communicated with the gas collection cavity.
In an alternative embodiment of the method of the present invention,
the liquid collecting cavity pressure measuring assembly comprises a liquid collecting cavity pressure measuring straight pipe, a liquid collecting cavity pressure measuring adapter pipe and a second pressure sensor ball joint;
the liquid collecting cavity pressure measuring straight pipe penetrates through the top of the gas collecting barrel and is connected with the liquid collecting cavity pressure measuring transfer pipe;
the liquid collecting cavity pressure measuring adapter tube penetrates through the liquid collecting cavity and the top of the liquid collecting barrel and is communicated with the liquid collecting cavity;
and the ball joint of the second pressure sensor is connected with one end of the liquid collecting cavity pressure measuring straight pipe, which is far away from the liquid collecting barrel, and is used for connecting the pressure sensor.
In an alternative embodiment of the method of the present invention,
the atomizing nozzle device further comprises a connecting sleeve;
the connecting sleeve is used for being connected with the high-pressure atomization cabin;
the gas collecting cylinder is inserted at the bottom of the connecting sleeve and is connected with the connecting sleeve.
In an alternative embodiment of the method of the present invention,
the atomizing nozzle device further comprises a pressure plate;
the pressure plate is connected to the top of the liquid collecting barrel and is coaxially arranged with the nozzle assembly.
In an alternative embodiment of the method of the present invention,
the atomizing nozzle device also comprises a bottom connecting flange;
the bottom connecting flange is connected to the bottom of the liquid collecting barrel, and a through hole is formed in the bottom connecting flange;
the bottom of the nozzle assembly passes through the through hole.
In an alternative embodiment of the method of the present invention,
the inner wall of through hole has protruding structure along self circumference extension, protruding structure with nozzle assembly's outer wall joint.
By combining the technical scheme, the invention can realize the technical effects that:
the invention provides an atomizing nozzle device, comprising: the gas collecting cylinder, the liquid collecting cylinder, the gas path straight pipe, the liquid path component and the nozzle component are arranged on the gas collecting cylinder; the gas collecting cylinder is provided with a gas collecting cavity and is arranged above the liquid collecting cylinder; the top of the liquid collecting cylinder is inserted into the bottom of the gas collecting cylinder, and the liquid collecting cylinder is provided with a liquid collecting cavity; the gas path straight pipe penetrates through the top of the gas collecting cylinder and is configured to convey a gas medium into the gas collecting cavity; the liquid path assembly penetrates through the top of the gas collecting cylinder, the outlet end of the liquid path assembly is communicated with the liquid collecting cavity, and the liquid path assembly is configured to convey a liquid medium into the liquid collecting cavity; the nozzle assembly extends into the liquid collection cavity, the top of the nozzle assembly is communicated with the gas collection cavity, and the bottom of the nozzle assembly penetrates through the bottom of the liquid collection cylinder; the nozzle assembly is provided with at least one tangential hole, and the bottom of the nozzle assembly is flush with the upper surface of the observation window of the high-pressure atomization cabin; the gas medium in the gas collecting cavity is sprayed out from the bottom of the nozzle assembly, and the liquid medium in the liquid collecting cavity enters the nozzle assembly through the tangential holes and is sprayed out from the bottom of the nozzle assembly.
The atomizing nozzle device provided by the invention is provided with the gas path straight pipe and the liquid path component, a gas medium enters the gas collecting cavity through the gas path straight pipe and is sprayed out through the nozzle component, a liquid medium enters the liquid collecting cavity through the liquid path component and is sprayed out through the nozzle component, the outlet of the nozzle component is flush with the upper surface of the observation window of the high-pressure atomizing cabin, and the complete gas-liquid spray which is sprayed out through the nozzle component and interacts with each other can be shot and observed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structure diagram of an atomizing nozzle device provided in an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an atomizing nozzle device;
FIG. 3 is a schematic cross-sectional view of an alternative angle of the atomizing nozzle arrangement;
FIG. 4 is a schematic structural view of a gas collecting cylinder, a liquid collecting cylinder, a gas path straight pipe, a liquid path straight pipe, a gas collecting cavity pressure measuring straight pipe and a liquid collecting cavity pressure measuring straight pipe;
FIG. 5 is a schematic structural view of a liquid collection tube, a liquid path straight tube and a liquid collection chamber pressure measurement straight tube;
FIG. 6 is a schematic structural view of a gas cylinder;
FIG. 7 is a cross-sectional view of a gas cylinder;
fig. 8 is a cross-sectional view of an alternative angle of the gas cylinder;
FIG. 9 is a schematic view of an alternative angle of the gas cylinder;
FIG. 10 is a schematic view of the liquid collection cartridge;
FIG. 11 is a cross-sectional view of a liquid collection cartridge;
FIG. 12 is a schematic view of the liquid collecting barrel at another angle;
FIG. 13 is a schematic structural view of a straight gas path tube;
FIG. 14 is a schematic structural view of a pressure measurement straight tube of a gas collection chamber;
FIG. 15 is a schematic view of a configuration of a fluid path adapter tube and a manifold pressure measurement adapter tube;
FIG. 16 is a schematic structural view of a nozzle assembly;
FIG. 17 is a cross-sectional view of the nozzle assembly;
FIG. 18 is a schematic view of the construction of the bottom attachment flange;
FIG. 19 is a cross-sectional view of the bottom attachment flange;
FIG. 20 is a schematic view of the construction of the coupling sleeve;
fig. 21 is a cross-sectional view of a connecting sleeve.
An icon: 100-a gas collecting cylinder; 110-connecting hole of liquid path switching tube on gas collecting cavity; 120-connecting holes on the liquid collecting cavity pressure measuring adapter tube; 130-gas collecting cavity threaded connection hole; 140-connecting holes of a straight pipe for pressure measurement of a liquid collection cavity; 150-gas circuit straight pipe connecting hole; 160-countersunk attachment holes; 170-radial seal groove of gas collecting cavity; 200-a liquid collecting cylinder; 210-a threaded bore of the collection chamber; 220-a liquid collection cavity radial seal groove; 230-first bolt connection unthreaded hole; 240-nozzle seal hole; 250-a press plate connecting threaded hole; 260-liquid path adapter tube connection hole; 270-a lower connecting hole of the adapter tube is used for measuring the pressure of the liquid collecting cavity; 300-straight gas path pipe; 310-a first through connection; 400-a fluid path assembly; 410-liquid path straight pipe; 411 — second pass-through; 420-liquid path transfer tube; 421-radial sealing grooves of the liquid path transfer pipes; 500-a nozzle assembly; 510-an air nozzle; 520-a liquid nozzle; 521-a tangential hole; 600-gas collection cavity pressure measurement straight pipe; 610-a first pressure sensor ball joint; 700-a liquid collection chamber pressure measurement assembly; 710-straight pressure measurement tube of liquid collection cavity; 720-liquid collection cavity pressure measurement transfer tube; 721-radial seal groove of the adapter tube for pressure measurement of the liquid collection cavity; 730-a second pressure sensor ball joint; 800-connecting a sleeve; 810-a pull ring; 820-connecting sleeve threaded connection hole; 830-connecting sleeve radial seal groove; 840-connecting the sleeve positioning groove; 850-connecting sleeve bolt connection unthreaded hole; 900-pressing plate; 910-press plate bolt connection unthreaded hole; 1000-bottom attachment flange; 1010-through holes; 1011-a convex structure; 1020-a second bolt connection unthreaded hole; 1030-positioning ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
At present, the research on the injection and atomization of the gas central coaxial centrifugal nozzle is mainly carried out under normal pressure in the academic world, and a device suitable for researching the injection and atomization process under the working environment of a real liquid rocket engine is lacked.
In view of the above, the present invention provides an atomizing nozzle device, comprising: the gas collecting cylinder 100, the liquid collecting cylinder 200, the gas path straight pipe 300, the liquid path component 400 and the nozzle component 500; the gas collecting cylinder 100 is provided with a gas collecting cavity, and the gas collecting cylinder 100 is arranged above the liquid collecting cylinder 200; the top of the liquid collecting cylinder 200 is inserted into the bottom of the gas collecting cylinder 100, and the liquid collecting cylinder 200 is provided with a liquid collecting cavity; the gas path straight pipe 300 penetrates through the top of the gas collecting cylinder 100 and is configured to convey a gas medium into the gas collecting cavity; the liquid path assembly 400 penetrates through the top of the gas collecting barrel 100, the outlet end of the liquid path assembly 400 is communicated with the liquid collecting cavity, and the liquid path assembly 400 is configured to convey liquid media into the liquid collecting cavity; the nozzle assembly 500 extends into the liquid collection cavity, the top of the nozzle assembly 500 is communicated with the gas collection cavity, and the bottom of the nozzle assembly passes through the bottom of the liquid collection cylinder 200; the nozzle assembly 500 is provided with at least one tangential hole 521, and the bottom of the nozzle assembly 500 is flush with the upper surface of the observation window of the high-pressure atomization chamber; the gaseous medium in the plenum chamber is ejected through the bottom of the nozzle assembly 500 and the liquid medium in the plenum chamber enters the nozzle assembly 500 through the tangential holes 521 and is ejected from the bottom of the nozzle assembly 500.
As shown in fig. 1-5, the atomizing nozzle device provided by the invention is provided with a gas path straight pipe 300 and a liquid path component 400, a gas medium enters a gas collecting cavity through the gas path straight pipe 300 and is sprayed out through the nozzle component 500, the liquid medium enters the liquid collecting cavity through the liquid path component 400 and is sprayed out through the nozzle component 500, an outlet of the nozzle component 500 is flush with the upper surface of an observation window of a high-pressure atomizing cabin, so that complete gas-liquid spraying which is sprayed out through the nozzle component 500 and interacts with the liquid rocket engine can be photographed and observed, the device can simulate the working environment of a high-pressure, medium-pressure and low-pressure combustion chamber liquid rocket engine, the spraying and jetting characteristics obtained in the environment have certain guiding significance on the engineering design of the nozzle of the liquid rocket engine, and the problem that the existing spraying and atomizing device cannot be applied to the high-pressure environment is solved.
The structure and shape of the atomizing nozzle device provided in this embodiment will be described in detail below with reference to fig. 1 to 21.
Regarding the shape and structure of the gas collecting cylinder 100 and the liquid collecting cylinder 200, in detail:
the gas collecting cylinder 100 is provided with a gas collecting cavity, and the gas collecting cylinder 100 is arranged above the liquid collecting cylinder 200.
Specifically, as shown in fig. 6 to 9, a gas collecting cavity is formed in the gas collecting barrel 100. Preferably, countersunk connecting holes 160 are formed in the extension of the gas collecting cylinder 100, in order to avoid interference with the gas collecting cavity threaded connecting holes 130 during connection, the gas collecting cavity threaded connecting holes 130 and the countersunk connecting holes 160 are uniformly distributed and arranged in a circumferential manner at an interval of 22.5 degrees, and the countersunk connecting holes 160 are connected with the connecting sleeve 800 through bolts; preferably, the extension of the gas collecting cylinder 100 is further provided with a gas collecting cavity threaded connecting hole 130; preferably, the gas collecting cylinder 100 is further provided with a gas collecting cavity radial seal groove 170, so that the gas collecting cylinder 200 and the gas collecting cylinder 100 form radial seal; preferably, the top of the gas collecting barrel 100 is further provided with a liquid collecting cavity pressure measuring straight pipe connecting hole 140, a gas path straight pipe connecting hole 150, a gas collecting cavity upper liquid path adapter connecting hole 110 and a liquid collecting cavity pressure measuring adapter connecting hole 120.
The top of the liquid collecting tube 200 is inserted into the bottom of the gas collecting tube 100, and the liquid collecting tube 200 is provided with a liquid collecting cavity.
Specifically, as shown in fig. 10-12, a liquid collection cavity is formed in the liquid collection cartridge 200. Preferably, a liquid collection cavity threaded hole 210 is formed in the lower extension of the liquid collection barrel 200 and is connected with a second bolt connecting unthreaded hole 1020 of the bottom connecting flange 1000 through a bolt; preferably, a liquid collection cavity radial sealing groove 220 is formed in the bottom of the liquid collection barrel 200 along the circumferential direction of the liquid collection barrel, so that the bottom connecting flange 1000 and the liquid collection barrel 200 form radial sealing; preferably, a first bolt connecting light hole 230 is further formed in the upper extension of the liquid collecting barrel 200, and the gas collecting cavity threaded connecting hole 130 is connected with the first bolt connecting light hole 230 through a bolt; preferably, the top of the liquid collecting cylinder 200 is provided with a nozzle sealing hole 240, and the upper two seals of the liquid nozzle 520 and the two seals of the air nozzle 510 are matched; preferably, the top of the liquid collecting barrel 200 is provided with a pressing plate connecting threaded hole 250, a liquid path adapter tube connecting hole 260 and a liquid collecting cavity pressure measurement adapter tube lower connecting hole 270, and after the pressing plate connecting threaded hole 250, the liquid path adapter tube connecting hole 260 and the liquid collecting cavity pressure measurement adapter tube lower connecting hole 270 are respectively inserted into the liquid path adapter tube 420 and the liquid collecting cavity pressure measurement adapter tube 720, the pressing plate connecting threaded hole, the liquid path adapter tube lower connecting hole and the liquid collecting cavity pressure measurement adapter tube lower connecting hole are connected with the upper surface of the liquid collecting barrel 200 in a welding mode.
Regarding the shape and structure of the gas path straight tube 300 and the liquid path assembly 400, in detail:
the gas path straight pipe 300 passes through the top of the gas cylinder 100 and is configured to convey a gas medium into the gas collection cavity.
Specifically, as shown in fig. 13, the gas path straight pipe 300 is a straight pipe, the lower corresponding position of the gas path straight pipe is connected to the upper surface of the gas collecting barrel 100 by welding, one end of the gas path straight pipe 300 away from the gas collecting barrel 100 is provided with a first straight joint 310, the lower end of the first straight joint 310 is connected to the gas path straight pipe 300 by welding, and the upper end is connected to the propellant pipeline.
The liquid path assembly 400 passes through the top of the gas cylinder 100, and the outlet end of the liquid path assembly 400 is communicated with the liquid collecting cavity, and the liquid path assembly 400 is configured to convey a liquid medium into the liquid collecting cavity.
In an alternative embodiment, the fluid circuit assembly 400 includes a fluid circuit straight tube 410 and a fluid circuit adapter tube 420; the liquid path straight pipe 410 is inserted at the top of the gas collecting cylinder 100; the inlet end of the liquid path adapter tube 420 is connected with the liquid path straight tube 410, and the liquid path adapter tube 420 extends into the gas collection cavity and passes through the top of the liquid collection barrel 200.
Specifically, the liquid path straight pipe 410 is a straight-through pipe, one end of the liquid path straight pipe 410, which is far away from the liquid collecting barrel 200, is provided with a second straight-through joint 411, the lower end of the second straight-through joint 411 is connected with the liquid path straight pipe 410 through welding, and the upper end of the second straight-through joint is connected with a propellant pipeline; preferably, the upper part of the liquid path adapter tube 420 is provided with a liquid path adapter tube radial sealing groove 421 to form radial sealing with the gas collecting cylinder 100, and the corresponding position of the lower part of the liquid path adapter tube 420 is connected with the upper surface of the liquid collecting cylinder 200 by welding.
Regarding the shape and structure of the nozzle assembly 500, in detail:
the nozzle assembly 500 extends into the liquid collection cavity, the top of the nozzle assembly 500 is communicated with the gas collection cavity, and the bottom of the nozzle assembly passes through the bottom of the liquid collection cylinder 200; the nozzle assembly 500 is provided with at least one tangential hole 521, and the bottom of the nozzle assembly 500 is flush with the upper surface of the observation window of the high-pressure atomization chamber; the gaseous medium in the plenum chamber is ejected through the bottom of the nozzle assembly 500 and the liquid medium in the plenum chamber enters the nozzle assembly 500 through the tangential holes 521 and is ejected from the bottom of the nozzle assembly 500.
In an alternative embodiment, the nozzle assembly 500 includes an air nozzle 510 and a liquid nozzle 520; the air nozzle 510 is inserted into the liquid nozzle 520 and is coaxially arranged with the liquid nozzle 520; the inlet of the gas nozzle 510 is communicated with the gas collection cavity, and the outer wall of the liquid nozzle 520 is provided with a tangential hole 521.
Specifically, as shown in fig. 16 and 17, the nozzle assembly 500 is a gas-centered coaxial centrifugal nozzle, the gas nozzle 510 is a jet nozzle, and the liquid nozzle 520 is a tangential orifice centrifugal nozzle. Three axial seals are designed between the gas nozzle 510 and the liquid nozzle 520. The gas medium is sprayed out through the gas nozzle, and the liquid medium enters the liquid nozzle 520 from the tangential hole 521 and is sprayed out from the nozzle opening of the liquid nozzle.
In an optional implementation manner, the present embodiment further includes a gas collecting cavity pressure measuring straight pipe 600, the gas collecting cavity pressure measuring straight pipe 600 penetrates through the top of the gas collecting cylinder 100 and is communicated with the gas collecting cavity, and one end of the gas collecting cavity pressure measuring straight pipe 600, which is far away from the gas collecting cylinder 100, is connected with a first pressure sensor ball joint 610; the pressure sensor ball joint is used for connecting a pressure sensor.
Specifically, the gas collecting cavity pressure measuring straight pipe 600 is a straight pipe, and the lower part of the straight pipe is connected with the upper surface of the gas collecting cylinder 100 through welding at a corresponding position; the lower end of the first pressure sensor ball joint 610 is connected with the gas collection cavity pressure measurement straight pipe 600 through welding, and the upper end is connected with the pressure sensor.
In an alternative embodiment, the present embodiment further comprises a plenum pressure measurement assembly 700; the liquid collection chamber pressure measurement assembly 700 passes through the liquid collection chamber and communicates with the gas collection chamber.
In an alternative embodiment, the plenum pressure measurement assembly 700 includes a plenum pressure measurement straight tube 710, a plenum pressure measurement transfer tube 720, and a second pressure sensor ball joint 730; the liquid collecting cavity pressure measuring straight pipe 710 penetrates through the top of the gas collecting cylinder 100 and is connected with the liquid collecting cavity pressure measuring adapter pipe 720; the liquid collection cavity pressure measurement adapter tube 720 penetrates through the liquid collection cavity and the top of the liquid collection barrel 200 and is communicated with the liquid collection cavity; the second pressure sensor ball joint 730 is connected with one end of the straight liquid collecting cavity pressure measuring pipe 710 far away from the liquid collecting barrel 200 and is used for being connected with a pressure sensor.
Specifically, the straight liquid collecting cavity pressure measuring pipe 710 is a straight pipe, the lower end of a second pressure sensor ball joint 730 is connected with the straight liquid collecting cavity pressure measuring pipe 710 in a welding mode, and the upper end of the second pressure sensor ball joint is connected with a pressure sensor; preferably, the upper part of the liquid collecting cavity pressure measuring adapter tube 720 is provided with a liquid collecting cavity pressure measuring adapter tube radial sealing groove 721 which forms a radial seal with the gas collecting barrel 100. The corresponding position of the lower part of the liquid collecting cavity pressure measuring adapter tube 720 is connected with the upper surface of the liquid collecting barrel 200 through welding.
Further, as shown in fig. 15, the design of the liquid path adapter tube 420 and the liquid collection cavity pressure measurement adapter tube 720 well solves the propellant supply and cavity pressure measurement problems of the liquid collection tube 200 below the layered modular design, and can ensure sealing. Wherein the corresponding position of adapter tube lower part passes through welded connection with album liquid section of thick bamboo 200 upper surface, prevents that gas from getting into album liquid section of thick bamboo 200 below in the gas cylinder 100, and upper portion places the sealing washer through radial seal groove and separates adapter tube and gas cylinder 100, avoids both to interfere with each other.
In an alternative embodiment, as shown in fig. 20 and 21, the present embodiment further comprises a connection sleeve 800; the connecting sleeve 800 is used for connecting with a high-pressure atomization chamber; the gas collecting cylinder 100 is inserted into the bottom of the connecting sleeve 800 and connected with the connecting sleeve 800.
Specifically, preferably, the bottom of the connection sleeve 800 is provided with a connection sleeve threaded connection hole 820, which is connected with the countersunk connection hole 160 of the gas cylinder 100 through a bolt; preferably, a connecting sleeve radial sealing groove 830 is formed in the bottom of the connecting sleeve 800 along the circumferential direction of the connecting sleeve, so that the connecting sleeve 800 and the gas collecting barrel 100 form radial sealing; preferably, the extension of the bottom of the connecting sleeve 800 is provided with a connecting sleeve positioning groove 840 to facilitate better connection with the gas collecting cylinder 100; preferably, the top of the connecting sleeve 800 is provided with a connecting sleeve bolt connecting unthreaded hole 850, which is connected with the existing high-pressure atomization chamber through a bolt; the upper surface of the connecting sleeve 800 forms a radial seal with the existing high pressure atomization chamber (radial seal groove on existing high pressure atomization chamber).
In an alternative embodiment, a pull ring 810 is attached to the top of the connection sleeve 800.
Specifically, the connection sleeve 800 is a connection base of the device, and the gas collecting cylinder 100 and other components are sequentially connected through the lower part of the connection sleeve 800, and the interior of the connection sleeve is a hollow structure, so that the arrangement of gas and liquid supply pipelines and chamber pressure measuring pipelines is facilitated. Meanwhile, the upper surface of the connecting sleeve 800 is in threaded connection with symmetrical pull rings 810 at proper positions, so that the device can be conveniently placed into the upper cylindrical cavity of the existing high-pressure atomization chamber during operation.
Further, the matching problem of this device and current high pressure atomization cabin has been solved on the one hand to the design of the connecting sleeve 800 that stretches down, can with this device cartridge in high pressure atomization cabin, this moment the lower surface of this device just with the upper surface parallel and level of current high pressure atomization cabin observation window, can ensure that the complete gas-liquid spraying of the interact through gas nozzle 510 and liquid nozzle 520 spun is shot and is observed.
In an alternative embodiment, the present embodiment further comprises a pressure plate 900; a pressure plate 900 is attached to the top of liquid collection cartridge 200 and is positioned coaxially with nozzle assembly 500.
Specifically, the pressing plate 900 preferably has a pressing plate bolt connection unthreaded hole 910 formed therein, and the pressing plate bolt connection unthreaded hole is connected to the pressing plate connection threaded hole 250 by a bolt. The pressure plate 900 functions to prevent the nozzles from being pressed upward by the high-pressure gas in the high-pressure chamber, so that the nozzles are spatially misaligned.
In an alternative embodiment, as shown in fig. 18 and 19, the present embodiment further includes a bottom connecting flange 1000, the bottom connecting flange 1000 is connected to the bottom of the liquid collecting barrel 200, and the bottom connecting flange 1000 is provided with a through hole 1010; the bottom of the nozzle assembly 500 passes through the through-hole 1010.
In an alternative embodiment, the inner wall of the through hole 1010 has a protrusion 1011 extending along its circumference, and the protrusion 1011 is engaged with the outer wall of the nozzle assembly 500.
Specifically, the bottom connecting flange 1000 is connected with the liquid collecting barrel 200 through bolts, the bottom connecting flange 1000 is provided with a second bolt connecting unthreaded hole 1020, and a positioning ring 1030 extends from the upper surface of the bottom connecting flange 1000, so that the bottom connecting flange 1000 is conveniently matched with the cavity of the liquid collecting barrel 200 and has a certain sealing effect; the middle part of the bottom connecting flange 1000 is provided with a through hole 1010, and the two lower parts of the liquid nozzles 520 are sealed and matched with the through hole 1010; the raised structure 1011 is a backstop slot for the liquid nozzle 520 to prevent the liquid nozzle 520 from moving downward under pressure from the liquid collection cartridge 200.
Further, the design of the pressure plate 900 and the retaining groove respectively keeps the relative positions of the gas nozzle 510 and the liquid nozzle 520 unchanged, ensures the matching relationship of the gas-liquid nozzle 520, and obtains more accurate spraying characteristics.
The atomizing nozzle device that this embodiment provided is modular degree high, convenient assembly and installation, and adopts bolted connection between each layer, makes things convenient for the dismouting. For example, if gas nozzle 510 or liquid nozzle 520 needs to be replaced, only the connecting bolts between bottom connecting flange 1000 and liquid collection cartridge 200 need to be removed; in the aspect of considering the sealing of the whole device, the degassing and liquid nozzles adopt axial sealing due to structural particularity, and radial sealing is adopted in other parts, so that the radial sealing can better ensure the accuracy and convenience of assembly relative to the axial sealing.
In addition, the implementation adopts stainless steel material design and processing, the highest pressure resistance is 10MPa, the working environment of the liquid rocket engine with high, medium and low combustion chamber pressures can be simulated, the injection atomization process of the gas central coaxial centrifugal nozzle under the real working environment of the liquid rocket engine can be explored, and the obtained spray injection characteristic has certain guiding significance on the engineering design of the liquid rocket engine nozzle. Meanwhile, the structural dimensions of the gas nozzle 510 and the liquid nozzle 520 of the gas-centered coaxial centrifugal nozzle adopted in the embodiment are completely consistent with those of the gas and liquid nozzles used in the jetting and atomizing experiment under normal pressure, so that the spraying characteristics of the nozzle under the same structural parameters and working condition parameters in the high-pressure environment and the normal-pressure environment can be compared, and the engineering practice can be further guided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An atomizing nozzle device, comprising: the device comprises a gas collecting cylinder (100), a liquid collecting cylinder (200), a gas path straight pipe (300), a liquid path component (400) and a nozzle component (500);
the gas collecting cylinder (100) is provided with a gas collecting cavity, and the gas collecting cylinder (100) is arranged above the liquid collecting cylinder (200);
the top of the liquid collecting barrel (200) is inserted into the bottom of the gas collecting barrel (100), and the liquid collecting barrel (200) is provided with a liquid collecting cavity;
the gas path straight pipe (300) penetrates through the top of the gas collecting cylinder (100) and is configured to convey a gas medium into the gas collecting cavity;
the liquid path assembly (400) penetrates through the top of the gas collecting barrel (100), the outlet end of the liquid path assembly (400) is communicated with the liquid collecting cavity, and the liquid path assembly (400) is configured to convey liquid media into the liquid collecting cavity;
the nozzle assembly (500) extends into the liquid collecting cavity, the top of the nozzle assembly (500) is communicated with the gas collecting cavity, and the bottom of the nozzle assembly passes through the bottom of the liquid collecting barrel (200);
the nozzle assembly (500) is provided with at least one tangential hole (521), and the bottom of the nozzle assembly (500) is flush with the upper surface of the high-pressure atomization cabin observation window;
the gas medium in the gas collecting cavity is sprayed out through the bottom of the nozzle assembly (500), and the liquid medium in the liquid collecting cavity enters the nozzle assembly (500) through the tangential holes (521) and is sprayed out from the bottom of the nozzle assembly (500);
further comprising a connecting sleeve (800);
the connecting sleeve (800) is used for being connected with the high-pressure atomization chamber;
the gas collecting cylinder (100) is inserted into the bottom of the connecting sleeve (800) and connected with the connecting sleeve (800);
further comprising a platen (900);
the pressure plate (900) is connected to the top of the liquid collecting barrel (200) and is coaxially arranged with the nozzle assembly (500);
further comprising a bottom connecting flange (1000);
the bottom connecting flange (1000) is connected to the bottom of the liquid collecting barrel (200), and a through hole (1010) is formed in the bottom connecting flange (1000);
the bottom of the nozzle assembly (500) passes through the through hole (1010);
the inner wall of through hole (1010) has protruding structure (1011) along self circumference extension, protruding structure (1011) with the outer wall joint of nozzle assembly (500).
2. Atomizing nozzle device according to claim 1,
the liquid path assembly (400) comprises a liquid path straight pipe (410) and a liquid path adapter pipe (420);
the liquid path straight pipe (410) is inserted into the top of the gas collecting cylinder (100);
the inlet end of the liquid path adapter tube (420) is connected with the liquid path straight tube (410), and the liquid path adapter tube (420) extends into the air collecting cavity and penetrates through the top of the liquid collecting barrel (200).
3. Atomizing nozzle device according to claim 1,
the nozzle assembly (500) comprises a gas nozzle (510) and a liquid nozzle (520);
the air nozzle (510) is inserted into the liquid nozzle (520) and is coaxially arranged with the liquid nozzle (520);
the inlet of the gas nozzle (510) is communicated with the gas collection cavity, and the tangential hole (521) is formed in the outer wall of the liquid nozzle (520).
4. Atomizing nozzle device according to claim 1,
the device also comprises a gas collection cavity pressure measurement straight pipe (600);
the gas collecting cavity pressure measuring straight pipe (600) penetrates through the top of the gas collecting cylinder (100) and is communicated with the gas collecting cavity, and one end, far away from the gas collecting cylinder (100), of the gas collecting cavity pressure measuring straight pipe (600) is connected with a first pressure sensor ball joint (610);
the pressure sensor ball joint is used for connecting a pressure sensor.
5. Atomizing nozzle device according to claim 1,
further comprising a liquid collection chamber pressure measurement assembly (700);
the liquid collection cavity pressure measurement assembly (700) penetrates through the liquid collection cavity and is communicated with the gas collection cavity.
6. Atomizing nozzle device according to claim 5,
the liquid collecting cavity pressure measuring assembly (700) comprises a liquid collecting cavity pressure measuring straight pipe (710), a liquid collecting cavity pressure measuring adapter pipe (720) and a second pressure sensor ball joint (730);
the liquid collecting cavity pressure measuring straight pipe (710) penetrates through the top of the gas collecting cylinder (100) and is connected with the liquid collecting cavity pressure measuring adapter pipe (720);
the liquid collection cavity pressure measurement adapter tube (720) penetrates through the liquid collection cavity and the top of the liquid collection barrel (200) and is communicated with the liquid collection cavity;
and the second pressure sensor ball joint (730) is connected with one end, far away from the liquid collecting barrel (200), of the liquid collecting cavity pressure measuring straight pipe (710) and is used for connecting a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310082625.6A CN115788704B (en) | 2023-02-08 | 2023-02-08 | Atomizing nozzle device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310082625.6A CN115788704B (en) | 2023-02-08 | 2023-02-08 | Atomizing nozzle device |
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| Publication Number | Publication Date |
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| CN115788704A CN115788704A (en) | 2023-03-14 |
| CN115788704B true CN115788704B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310082625.6A Active CN115788704B (en) | 2023-02-08 | 2023-02-08 | Atomizing nozzle device |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9279503B2 (en) * | 2011-06-20 | 2016-03-08 | Streamline Automation, Llc | Constant volume combustion chamber |
| CN109909086B (en) * | 2018-12-25 | 2020-12-18 | 江苏大学 | Gas-liquid two-phase flow atomizing nozzle and design method thereof |
| CN110792531B (en) * | 2019-11-22 | 2021-03-16 | 中国人民解放军战略支援部队航天工程大学 | Intelligent atomizing nozzle based on high-voltage discharge and spraying control system |
| CN114562388A (en) * | 2022-02-28 | 2022-05-31 | 中国人民解放军战略支援部队航天工程大学 | Rocket engine injection panel capable of researching spraying relation among multiple nozzles |
| CN114810420B (en) * | 2022-03-31 | 2023-09-26 | 中国人民解放军战略支援部队航天工程大学 | Central gas-liquid coaxial rotational flow model injector capable of measuring gas core pressure oscillation |
| CN114810421B (en) * | 2022-06-28 | 2022-09-23 | 东方空间(西安)宇航技术有限公司 | Adjustable pintle injector and rocket engine |
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