CN110006628A - Underwater propeller jet flow field visual inspection system based on circulating water tunnel - Google Patents
Underwater propeller jet flow field visual inspection system based on circulating water tunnel Download PDFInfo
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- CN110006628A CN110006628A CN201910431619.0A CN201910431619A CN110006628A CN 110006628 A CN110006628 A CN 110006628A CN 201910431619 A CN201910431619 A CN 201910431619A CN 110006628 A CN110006628 A CN 110006628A
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- flow field
- water tunnel
- air cavity
- jet flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The underwater propeller jet flow field visual inspection system based on circulating water tunnel that the present invention relates to a kind of, belongs to hydraulic and hydroelectric engineering, marine ship and submarine navigation device field of engineering technology.Light source and high speed camera are placed at front glass form, pressure sensor and temperature sensor intersection are evenly arranged on rear side stainless steel plate；It will be full of water in water tunnel experiment section, connect compressed air hose, the intracavitary portion of combustion gas is purged, connects fuel gas pipe when liquid water being not present inside air cavity, while starting ignition needle is lighted a fire；The specific location of other frame camera and light source is set according to water tunnel experiment section flow field structure, the work such as experimental observation and DATA REASONING can be started after lighting a fire successfully.The influence of system of the invention to gaseous matter attribute, gas temperature, gas pressure and water velocity convection current field structure and Field Characteristics variation carries out experimental study.The accurate control of water velocity can be achieved, and can realize being switched fast for air and combustion gas.
Description
Technical field
The underwater propeller jet flow field visual inspection system based on circulating water tunnel that the present invention relates to a kind of, belongs to water conservancy
Hydroelectric project, marine ship and submarine navigation device field of engineering technology.
Background introduction
Aircraft field of engineering technology under water, underwater propulsion technology are the dynamic transmitting skills of most widely used guided missile
Art, principle are to obtain reaction thrust by injection high speed working medium.Small gas engine as underwater propulsion technology most
It is currently the latent preferred power for penetrating weapon of all kinds of striking types for easy power source.Right small gas engine works under water
When, the serious normal ejection for restricting gas in engine ignition moment jet pipe is caused bulk gas by the effect of inertia of water environment
Assemble in the combustion chamber, make engine interior hypertonia, working performance is affected, or even cause engine operation failure into
And lead to abortive launch.Furthermore a large amount of high-temperature fuel gas sprays into water, transient state combustion gas bubble, high temperature combustion can be formed in missile tail
There are complicated physical phenomenas such as air-water blending, heat exchange and phase transformations and with fierce hydrodynamic interactions between bubble and water；Combustion
The movement of complexity shock wave structure present in bubble and shock wave structure can make the pressure acute variation in airflow field.The above water
The comprehensive function of violent interaction, physical change, shock wave movement between gas will greatly increase the uncertainty of transmitting, influence
Sail body stress causes motion profile deviation.Therefore, the flow field structure during understanding High-speed Gas-jets under Water and flow field are special
Sign variation is to rationally estimating the engine operating characteristics such as thrust magnitude and noise has higher engineering application value.
The variation of shape of plasma jet under static environment, flow media item are focused primarily on to the research of gas jet in water at present
Also mostly under part is to calculate to carry out based on whole numerical value, forms flow field knot to high-speed gas injection under varying environment velocity of medium
The research of structure mechanism of Evolution, which rarely has, to be related to.
Summary of the invention
The underwater propeller jet flow field visual inspection system based on circulating water tunnel that the object of the present invention is to provide a kind of,
The system changes gaseous matter attribute, gas temperature, gas pressure and water velocity convection current field structure and Field Characteristics
It influences to carry out experimental study.The accurate control of water velocity can be achieved, and can realize being switched fast for air and combustion gas.
The purpose of the present invention is what is be achieved through the following technical solutions:
Underwater propeller jet flow field visual inspection system based on circulating water tunnel, including burner apparatus, combustion chamber
System and gas injection apparatus；
The burner apparatus includes compressed air hose, fuel gas pipe, ignition electrode and firm banking；
The firm banking is hollow structure, and top opens up three and passes through, and is respectively used to connection compressed air hose, combustible gas
Body pipe and ignition electrode；Air and fuel gas mix at cavity, are then ignited pin mark combustion；
The chamber system includes burning air cavity, pyroceram and seal cover board；
The burning air cavity lower end surface is fixed on the experimental section top of water tunnel experiment；The fixed peace in top of the burning air cavity
Fill the firm banking；The diversion pipe of low side fixed installation gas injection apparatus；Visual windows are opened up on burning air cavity side wall；
Pyroceram sealing is fixed at the visual windows of burning air cavity by seal cover board；
The gas injection apparatus includes diversion pipe and nozzle；
The nozzle is frustum type round tube；The nozzle is mounted at draft tube outlets position；It need to guarantee gas ejection side
To consistent with water (flow) direction；
The fixed mode of the sealing is to open up form securing channels around the visual windows of burning air cavity；Seal cover board
It is welded in form securing channels by weldment；
The form securing channels are the hollow cuboid that a section is rectangle, inner rectangular boundary and burning air cavity side
Rectangular opening it is in the same size；
The seal cover board is " time " type plate, is consisted of inside and outside two parts, and it is logical to be uniformly provided with 30 circles close to edge
Hole；
The diversion pipe is " L " type round tube, and side is provided with internal screw thread, and the other side is provided with external screw thread；
The course of work: two light sources are respectively placed at left and right sides of burning air cavity at glass vision panel, high speed camera is placed
At front glass form, pressure sensor and temperature sensor intersection are evenly arranged on rear side stainless steel plate；By water tunnel experiment section
It is interior to be full of water, and with the movement of the speed of reservation, compressed air hose is connected, the intracavitary portion of combustion gas is purged, inside air cavity
There is no connection fuel gas pipes when liquid water, while starting ignition needle is lighted a fire；According to water tunnel experiment section flow field structure
The specific location of other frame camera and light source is set, the work such as experimental observation and DATA REASONING can be started after lighting a fire successfully.
Beneficial effect
1, a kind of underwater propeller jet flow field visual inspection system based on circulating water tunnel of the invention, may be implemented
Underwater propeller jet flow field structure is measured；
2, a kind of underwater propeller jet flow field visual inspection system based on circulating water tunnel of the invention, can be flexible
Rapidly switch Gas Jet, realizes the flow field structure observation under different jet gaseous state；
3, a kind of underwater propeller jet flow field visual inspection system based on circulating water tunnel of the invention, can be real simultaneously
Combustion chamber flow field and gas-liquid two-phase mixing flow observation under present different jet gas parameter (pressure and temperature)；
4, a kind of underwater propeller jet flow field visual inspection system based on circulating water tunnel of the invention, it can be achieved that
To the observation of gas-liquid two-phase blending flow field under different liquids flow velocity.
5, a kind of underwater propeller jet flow field visual inspection system based on circulating water tunnel of the invention, can be flexible
Different spray nozzles model is replaced, which can provide theoretical foundation for the design of underwater propeller jet structure.
Detailed description of the invention
Fig. 1 is underwater propeller jet flow field visual inspection system assembles stereoscopic schematic diagram of the present invention；
Fig. 2 is local assembling schematic perspective view of the invention；
Fig. 3 is firm banking top view of the present invention；
Fig. 4 is present invention burning air cavity front view；
Fig. 5 is present invention burning air cavity rearview；
Fig. 6 is present invention burning air cavity top view；
Fig. 7 is form securing channels front view of the present invention；
Fig. 8 is seal cover board front view of the present invention；
Fig. 9 is diversion pipe front view of the present invention；
Figure 10 is nozzle front view of the present invention.
Wherein, 1-compressed air hose, 2-fuel gas pipes, 3-ignition electrodes, 4-firm bankings, 5-burning air cavitys,
6-form securing channels, 7-seal cover boards, 8-rectangular seals, 9-pyrocerams, 10-diversion pipes, 11-nozzles,
12-water tunnel experiment section top panels.
Specific embodiment
With reference to the accompanying drawing, a specific embodiment of the invention is illustrated to be described in detail.
Embodiment 1
A kind of underwater propeller jet flow field visual inspection system based on circulating water tunnel, including burner apparatus, combustion
Chamber system and gas injection apparatus are burnt, as shown in Figure 1 and Figure 2；
The burner apparatus includes compressed air hose 1, fuel gas pipe 2, ignition electrode 3 and firm banking 4, such as Fig. 1 institute
Show；
The firm banking 4 is " convex " type metal block, opens up three threaded holes at the center of upper surface, is respectively used to connection pressure
Contracting air hose, fuel gas pipe and ignition electrode；Lower end surface edge uniformly opens up 12 circular through holes, as shown in Figure 3；
The chamber system includes burning air cavity 5, form securing channels 6, seal cover board 7, rectangular seal 8 and Nai Gao
Warm glass 9, as shown in Figure 1 and Figure 2；
The burning air cavity 5 is a square cavity, is provided with a square hole at the center of upper surface, 12 are provided with around square hole
Circular through hole, circular through hole size is consistent with 12 circular through holes of firm banking with position, as shown in figs. 4 and 6；Lower end surface
A tapped through hole is provided at center, edge is provided with 4 circular through holes, as shown in Figure 6；Three sides have a rectangle
Hole is uniformly provided with 9 threaded holes at the center of other side face, for installing pressure sensor and temperature sensor, such as Fig. 4, Fig. 5
It is shown；
The form securing channels 6 are the hollow cuboid that a section is rectangle, inner rectangular boundary and burning air cavity side
The rectangular opening in face is in the same size, as shown in Figure 7；
The seal cover board 7 is " time " type plate, is consisted of inside and outside two parts, and it is logical to be uniformly provided with 30 circles close to edge
Hole, as shown in Fig. 2, Fig. 8；
The gas injection apparatus includes diversion pipe 10 and nozzle 11；
The diversion pipe 10 is " L " type round tube, and side is provided with internal screw thread, and the other side is provided with external screw thread, as shown in Figure 9；
The nozzle 11 is a frustum type round tube, and side is provided with external screw thread, as shown in Figure 10；
Connection type: form securing channels 6 are separately fixed at the rectangular opening of burning 5 three sides of air cavity by welding manner
At position；Burning 5 lower end surface of air cavity is fixed on water tunnel experiment section top panel by bolt and nut, and bolt is referring to GB/T 5782-
2000, it is chosen according to burning air cavity lower end surface edge circular through hole diameter, nut is chosen according to bolt；4 lower end of firm banking
Face is fixed on burning 5 upper surface of air cavity by bolt and nut, and bolt is referring to GB/T 5782-2000, according to burning air cavity upper surface
It is chosen with 12 circular through hole diameters of section under firm banking, nut is chosen according to bolt；Compressed air hose 1, fuel gas pipe 2
4 upper surface of firm banking is threadedly secured to ignition electrode 3；Interior seal cover board 7 is fixed on form by welding manner and fixes
On conduit 6；Pyroceram 9, rectangular seal 8 and external seal cover board 7 are fixed on form securing channels 6 by bolt and nut
On, it is close to add rectangle simultaneously between pyroceram 9 and inside and outside seal cover board 7 for gas leakage in the air cavity 5 that burns in order to prevent
Seal 8, bolt are chosen referring to GB/T 5782-2000 according to the circular through hole diameter on seal cover board, and nut is selected according to bolt
It takes；10 external screw thread one end of diversion pipe is connected by screw thread with water tunnel experiment section top panel 12, burning 5 lower end surface of air cavity, the other end
It is connected by screw thread with nozzle 11.
The course of work: two light sources are respectively placed at burning 5 left and right sides glass vision panel of air cavity, high speed camera is placed
At front glass form, pressure sensor and temperature sensor intersection are evenly arranged on rear side stainless steel plate；By water tunnel experiment section
It is interior to be full of water, and with the movement of the speed of reservation, compressed air hose 1 is connected, to purging inside burning air cavity 5, in air cavity 5
Portion connects fuel gas pipe 2 when liquid water is not present, while starting ignition needle 3 is lighted a fire；According to water tunnel experiment section flow field
The specific location of structure setting other frame camera and light source, can start the works such as experimental observation and DATA REASONING after lighting a fire successfully
Make.
Finally, it should be noted that being merely illustrative of the technical solution of the present invention above, those skilled in the art
It can be with modification or equivalent replacement of the technical solution of the present invention are made.It repairs all within the spirits and principles of the present invention
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. the underwater propeller jet flow field visual inspection system based on circulating water tunnel, it is characterised in that: filled including burner
It sets, chamber system and gas injection apparatus；
The burner apparatus includes compressed air hose, fuel gas pipe, ignition electrode and firm banking；
The firm banking is hollow structure, and top opens up three and passes through, and is respectively used to connection compressed air hose, fuel gas pipe
And ignition electrode；Air and fuel gas mix at cavity, are then ignited pin mark combustion；
The chamber system includes burning air cavity, pyroceram and seal cover board；
The burning air cavity lower end surface is fixed on the experimental section top of water tunnel experiment；Institute is fixedly mounted in the top of the burning air cavity
State firm banking；The diversion pipe of low side fixed installation gas injection apparatus；Visual windows are opened up on burning air cavity side wall；Sealing
Pyroceram sealing is fixed at the visual windows of burning air cavity by cover board；
The gas injection apparatus includes diversion pipe and nozzle.
2. the underwater propeller jet flow field visual inspection system based on circulating water tunnel as described in claim 1, feature
Be: the nozzle is frustum type round tube；The nozzle is mounted at draft tube outlets position；Need to guarantee gas emission direction with
Water (flow) direction is consistent.
3. the underwater propeller jet flow field visual inspection system based on circulating water tunnel as described in claim 1, feature
Be: the fixed mode of the sealing is to open up form securing channels around the visual windows of burning air cavity；Seal cover board is logical
Weldment is crossed to be welded in form securing channels.
4. the underwater propeller jet flow field visual inspection system based on circulating water tunnel as described in claim 1, feature
Be: the form securing channels are the hollow cuboid that a section is rectangle, inner rectangular boundary and air cavity side of burning
Rectangular opening is in the same size.
5. the underwater propeller jet flow field visual inspection system based on circulating water tunnel as described in claim 1, feature
Be: the seal cover board is " time " type plate, is consisted of inside and outside two parts, and is uniformly provided with through-hole close to edge.
6. the underwater propeller jet flow field visual inspection system based on circulating water tunnel as described in claim 1, feature
Be: the diversion pipe is " L " type round tube, and side is provided with internal screw thread, and the other side is provided with external screw thread.
7. the method for carrying out propeller jet flow field using the examining system as described in claim 1 to 6 any one, feature exist
In: two light sources are respectively placed at left and right sides of burning air cavity at glass vision panel, high speed camera is placed in front glass form
Place, pressure sensor and temperature sensor intersection are evenly arranged on rear side stainless steel plate；Water will be full of in water tunnel experiment section, and with pre-
The speed movement ordered, connects compressed air hose, purges to the intracavitary portion of combustion gas, connects when liquid water being not present inside air cavity
Logical fuel gas pipe, while starting ignition needle is lighted a fire；According to water tunnel experiment section flow field structure, other frame camera is set
With the specific location of light source, experimental observation and DATA REASONING work can be started after lighting a fire successfully.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910431619.0A CN110006628B (en) | 2019-05-22 | 2019-05-22 | Underwater propeller jet flow field visualization observation system based on circulating water tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910431619.0A CN110006628B (en) | 2019-05-22 | 2019-05-22 | Underwater propeller jet flow field visualization observation system based on circulating water tunnel |
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| CN110006628A true CN110006628A (en) | 2019-07-12 |
| CN110006628B CN110006628B (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567678A (en) * | 2019-08-30 | 2019-12-13 | 中国船舶工业集团公司第七0八研究所 | beam device for testing hydrodynamic performance of propeller |
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| KR20190024042A (en) * | 2017-08-31 | 2019-03-08 | 한국해양과학기술원 | A rectangular prism installing method on the large cavitation tunnel |
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2019
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| CN101464206A (en) * | 2009-01-20 | 2009-06-24 | 西安交通大学 | Test device for turbulent flow gas-liquid blending flow field in transverse flow |
| CN107531229A (en) * | 2015-03-03 | 2018-01-02 | 麻省理工学院 | Submarine navigation device designs and control method |
| CN104807612A (en) * | 2015-05-05 | 2015-07-29 | 北京理工大学 | Circulating water tunnel-based synchronous measuring system for unsteady cavitating flows |
| KR20190024042A (en) * | 2017-08-31 | 2019-03-08 | 한국해양과학기술원 | A rectangular prism installing method on the large cavitation tunnel |
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Non-Patent Citations (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567678A (en) * | 2019-08-30 | 2019-12-13 | 中国船舶工业集团公司第七0八研究所 | beam device for testing hydrodynamic performance of propeller |
| CN110567678B (en) * | 2019-08-30 | 2021-06-15 | 中国船舶工业集团公司第七0八研究所 | Beam device for testing hydrodynamic performance of propeller |
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| CN110006628B (en) | 2020-02-14 |
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