CN108252820A - Being exchanged heat using air-flow increases the jet pipe of thrust - Google Patents
Being exchanged heat using air-flow increases the jet pipe of thrust Download PDFInfo
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- CN108252820A CN108252820A CN201810159751.6A CN201810159751A CN108252820A CN 108252820 A CN108252820 A CN 108252820A CN 201810159751 A CN201810159751 A CN 201810159751A CN 108252820 A CN108252820 A CN 108252820A
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- jet pipe
- intension
- laval nozzle
- lance holder
- hole slot
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- 239000000463 material Substances 0.000 claims description 42
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 claims description 10
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 230000005619 thermoelectricity Effects 0.000 claims 2
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- CNKHSLKYRMDDNQ-UHFFFAOYSA-N halofenozide Chemical compound C=1C=CC=CC=1C(=O)N(C(C)(C)C)NC(=O)C1=CC=C(Cl)C=C1 CNKHSLKYRMDDNQ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/82—Jet pipe walls, e.g. liners
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/85—Thermoelectric active materials
- H10N10/851—Thermoelectric active materials comprising inorganic compositions
- H10N10/852—Thermoelectric active materials comprising inorganic compositions comprising tellurium, selenium or sulfur
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The disclosure, which provides a kind of exchange heat using air-flow, increases the jet pipe of thrust, including outer culvert jet pipe, Laval nozzle, intension jet pipe, outer culvert lance holder and intension lance holder；The intension jet pipe, the intension lance holder, the Laval nozzle, the outer culvert lance holder and the outer culvert jet pipe are configured successively along the radial direction of the jet pipe；The outer culvert jet pipe is fixedly connected by the outer culvert lance holder with the Laval nozzle；The intension jet pipe is fixedly connected by the intension lance holder with the Laval nozzle；The Laval nozzle is receives expansion type jet pipe, the Laval nozzle is with the outer runner for containing jet pipe composition along flow direction in collapsed shape, the runner that the Laval nozzle is formed with the intension jet pipe first shrinks along flow direction and expands afterwards, and the runner edge flow direction of the intension jet pipe is in collapsed shape.
Description
Technical field
This disclosure relates to aero-engine jet pipe field more particularly to a kind of exchanged heat using air-flow increase the tail spray of thrust
Pipe.
Background technology
The jet pipe of general turbojet or turbofan be all using constant entropy expansion principle into
The pressure energy of gas, thermal energy by expansion are accelerated or simple inside and outside Gas Mixing in Cross flow of containing are converted into the dynamic of gas by row design
Can, engine is discharged at a high speed so as to obtain motor power.Traditional turbojet delivery temperature is higher, a large amount of heat
Amount is not used effectively, i.e., the electric energy for thermal energy of air-flow not being converted into the thrust of engine or being utilized.
But aero-engine is taken and effectively arranged towards the continuous improvement of more economical, more environmentally friendly etc. requirement with engineering circles
It applies, makes full use of the effective recycling of thermal energy in aero-turbine exhaust, it is necessary that motor power is continuously improved.
Based on to high speed pneumatic mechanics the study found that the heat exchange of low temperature subsonic airflow and high temperature ultrasonic speed air-flow can cause
The variation of air-flow stagnation pressure, particularly supersonic flow reduction of heat can dramatically increase the stagnation pressure of air-flow, so as to improve doing for air-flow
Function power.The disclosure proposes a kind of designing scheme of supersonic speed jet pipe, utilizes high temperature ultrasonic speed air-flow and low temperature subsonic speed gas
Stream exchanges heat, i.e., to high temperature ultrasonic speed air-flow reduction of heat, low temperature subsonic airflow is heated, and using thermoelectric material in cold and hot gas
It generates electricity under conditions of stream heat transfer temperature difference, further enhances heat transfer effect, realize the raising of air-flow stagnation pressure, so as to promote air-flow acting
Ability improves motor power.
Invention content
In view of the above-mentioned problems, low temperature subsonic airflow and the heat exchange of high temperature ultrasonic speed air-flow are led to the total pressure of air-flow by the disclosure
This feature of changing is applied to the improvement of motor power, is made that improvement and optimization to the structure of jet pipe, makes full use of
The thermal energy of air-flow increases the thrust of engine, is achieved through the following technical solutions：
Being exchanged heat using air-flow increases the jet pipe of thrust, including outer culvert jet pipe, Laval nozzle, intension jet pipe, outer culvert spray
Pipe holder and intension lance holder；
The intension jet pipe, the intension lance holder, the Laval nozzle, the outer culvert lance holder and described
Outer culvert jet pipe is configured successively along the radial direction of the jet pipe；
The outer culvert jet pipe is fixedly connected by the outer culvert lance holder with the Laval nozzle；
The intension jet pipe is fixedly connected by the intension lance holder with the Laval nozzle；
The Laval nozzle is to receive expansion type jet pipe, and the Laval nozzle is flowed with the outer runner edge for containing jet pipe composition
To in collapsed shape, the runner that the Laval nozzle is formed with the intension jet pipe first shrinks along flow direction and expands afterwards, described interior
Contain the runner edge flow direction of jet pipe in collapsed shape.
Further, the jet pipe further includes outer culvert radome fairing, the outer culvert radome fairing and the Laval nozzle
Outside wall surface is fixedly connected, and has gap between the outer culvert radome fairing and the outside wall surface of the Laval nozzle.
Further, the jet pipe further includes intension radome fairing, and the intension radome fairing is interior with the intension jet pipe
Wall surface is fixedly connected, and has gap between the internal face of the intension radome fairing and the intension jet pipe.
Further, the jet pipe further includes thermoelectric material element, and the thermoelectric material element converts thermal energy into electricity
Can, the thermoelectric material element configuration is between the outer culvert radome fairing and the outside wall surface of the Laval nozzle and is configured
Between the internal face of the intension radome fairing and the intension jet pipe.
Further, the outer wall surface for containing jet pipe is equipped with the first hole slot, and the wall surface of the Laval nozzle is equipped with
Second hole slot, the wall surface of the intension jet pipe are equipped with third hole slot, and the outer wall surface for containing radome fairing is equipped with the 4th hole slot,
First hole slot and the 4th hole slot for the lead of the thermoelectric material element export, second hole slot with it is described
Third hole slot is used for the connection of the lead of the thermoelectric material element.
Further, the first hole slot outer culvert lance holder corresponding with the position of the 4th hole slot, described
The two hole slots intension lance holder corresponding with the position of the third hole slot.
Further, the outer culvert lance holder and the intension lance holder are hollow structure, the outer culvert jet pipe
The shape in the cross section of stent is aerofoil profile, and the shape in the cross section of the intension lance holder is diamond pattern.
Further, the thermoelectric material element is lead telluride thermoelectric material element.
Further, the outer radome fairing of containing uses the material with thermal conduction characteristic with the intension radome fairing.
Term " first ", " second " in above-mentioned technical proposal etc. are merely to the knot of mark, not restriction associated components
Structure.
The advantageous effect of the disclosure：
1) process to be exchanged heat in duct with high temperature ultrasonic speed air-flow using low temperature subsonic airflow, which can be promoted effectively, starts
This feature of the stagnation pressure of machine exhaust airstream, improves the structure of jet pipe, greatly improves the acting ability of air-flow,
And then improve the thrust of engine；
2) partial heat energy in heat transfer process is changed into electric energy using thermoelectric material, further enhances heat transfer effect,
The efficiency of engine is improved, while electric energy can also be exported and do other purposes to engine, engineering circles is met and aviation is sent out
The more economical and environmentally friendly requirement that motivation proposes.
Description of the drawings
Attached drawing shows the illustrative embodiments of the disclosure, and it is bright together for explaining the principle of the disclosure,
Which includes these attached drawings to provide further understanding of the disclosure, and attached drawing is included in the description and forms this
Part of specification.
Fig. 1 is the theoretical calculation schematic diagram of the hot and cold air heat exchange of disclosure specific embodiment；
Fig. 2 is the outer culvert lance holder horizontal stroke of the jet pipe for increasing thrust that exchanged heat using air-flow of disclosure specific embodiment
Diagrammatic cross-section；
Fig. 3 is the intension lance holder horizontal stroke of the jet pipe for increasing thrust that exchanged heat using air-flow of disclosure specific embodiment
Diagrammatic cross-section；
Fig. 4 is the overall structure section view of the jet pipe for increasing thrust that exchanged heat using air-flow of disclosure specific embodiment
Figure；
Fig. 5 is the axial view of the jet pipe for increasing thrust that exchanged heat using air-flow of disclosure specific embodiment；
Fig. 6 is the operating diagram of the jet pipe for increasing thrust that exchanged heat using air-flow of disclosure specific embodiment；
Fig. 7 is that being exchanged heat using air-flow for disclosure specific embodiment increases the thermoelectric material electricity generating principle figure of thrust.
Specific embodiment
The disclosure is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is only used for explaining related content rather than the restriction to the disclosure.It also should be noted that in order to just
It is illustrated only in description, attached drawing and the relevant part of the disclosure.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the disclosure can phase
Mutually combination.The disclosure is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Being exchanged heat using air-flow increases the jet pipe of thrust, including outer culvert jet pipe 1, Laval nozzle 2, intension jet pipe 3, outer culvert
Lance holder 7 and intension lance holder 8；
Intension jet pipe 3, intension lance holder 8, Laval nozzle 2, outer culvert lance holder 7 and outer jet pipe 1 of containing are along described
The radial direction of jet pipe is configured successively；
Outer culvert jet pipe 1 is fixedly connected by outer culvert lance holder 7 with Laval nozzle 2；
Intension jet pipe 3 is fixedly connected by intension lance holder 8 with Laval nozzle 2；
Laval nozzle 2 is receives expansion type jet pipe, and Laval nozzle 2 is with the outer runner for containing the composition of jet pipe 1 along flow direction in contraction
Shape, the runner that Laval nozzle 2 is formed with intension jet pipe 3 first shrink along flow direction and expand afterwards, the runner edge flow direction of intension jet pipe 3
In collapsed shape.
Jet pipe further includes outer culvert radome fairing 5, and outer culvert radome fairing 5 is fixedly connected with the outside wall surface of Laval nozzle 2, outer culvert
There is gap between the outside wall surface of radome fairing 5 and Laval nozzle 2.
Jet pipe further includes intension radome fairing 6, and intension radome fairing 6 is fixedly connected with the internal face of intension jet pipe 3, and intension is whole
There is gap between stream cover 6 and the internal face of intension jet pipe 3.
Jet pipe further includes thermoelectric material element 4, and thermoelectric material element 4 converts thermal energy into electric energy, thermoelectric material element 4
Configuration contains outside between radome fairing 5 and the outside wall surface of Laval nozzle 2 and configuration is in intension radome fairing 6 and intension jet pipe 3
Between internal face.
The outer wall surface for containing jet pipe 1 is equipped with the first hole slot, and the wall surface of Laval nozzle 2 is equipped with the second hole slot, intension spray
The wall surface of pipe 3 is equipped with third hole slot, and the outer wall surface for containing radome fairing 5 is equipped with the 4th hole slot, and the first hole slot and the 4th hole slot are used
In the export of the lead of thermoelectric material element 4, the second hole slot is with third hole slot for the connection of the lead of thermoelectric material element 4.
The first hole slot outer position pair for containing lance holder 7, the second hole slot and third hole slot corresponding with the position of the 4th hole slot
Answer intension lance holder 8.
Outer culvert lance holder 7 and intension lance holder 8 are hollow structure, the shape in the outer cross section for containing lance holder 7
For aerofoil profile, the shape in the cross section of intension lance holder 8 is diamond pattern.
Thermoelectric material element 4 is lead telluride thermoelectric material element.
It is outer to contain radome fairing 5 with intension radome fairing 6 using the material with thermal conduction characteristic.
In more detail,
Disclosed technique scheme is using low temperature subsonic airflow to high temperature ultrasonic speed air-flow reduction of heat, high temperature ultrasonic speed air-flow pair
Low temperature subsonic airflow heats this heat transfer process, realizes the promotion of exhaust airstream stagnation pressure, and then increase motor power, former
Reason is as follows：
It can be derived between total airflow temperature degree, stagnation pressure and Mach number three according to the pipe flow theory that exchanges heat in aerodynamics
Variation relation, i.e.,
" d " represents differential sign, " P in formula*" represent air-flow stagnation pressure, " T*" represent total airflow temperature degree, " k " represents gas
Specific heat ratio, " Ma " represent the Mach number of air-flow.
For example, the heat exchange amount in hot and cold air is all 10%, i.e.,In the case of, heat exchange is calculated to stagnation pressure
It influences, as shown in Figure 1, abscissa is gasflow mach number, ordinate is the stagnation pressure P after air-flow heat exchange2 *With it is total before heat exchange
Press P1 *Ratio, as a result the slope of curve of reduction of heat process is just, i.e., reduction of heat rises stagnation pressure, and the slope of curve of heating process is
Negative, i.e. heating makes total drops.
More specifically, such as high temperature gas flow Mach 2 ship 2, low-temperature airflow Mach 2 ship 0.5, when high temperature ultrasonic speed air-flow
Heat transfer to low temperature subsonic airflow when, it is 10% to add in heat exchange amount, then the stagnation pressure of high temperature ultrasonic speed air-flow rises Δ P*
=0.28P*, i.e. P2 */P1 *=1.28；The total drops Δ P of low temperature subsonic airflow*=0.0175P*, i.e. P2 */P1 *=0.9825,
So the stagnation pressure rising of high temperature ultrasonic speed air-flow is 16 times (squares of Mach number ratio) of the total drops of low temperature subsonic airflow.
With the increase of heat exchange amount, the variation of stagnation pressure will continue to increase, so it is very significant that air-flow stagnation pressure, which rises income,.Meanwhile
Thermoelectric material utilizes the temperature gradient between air-flow, and a part of heat is converted into electric energy output, and this process is also further
Heat transfer effect is enhanced, helps to improve the stagnation pressure of air-flow.
As shown in Figures 4 and 5, the jet pipe for increasing thrust using air-flow heat exchange of present embodiment includes outer culvert jet pipe
1st, expansion type Laval nozzle 2, intension jet pipe 3, lead telluride thermoelectric material element 4, outer culvert radome fairing 5, intension radome fairing 6, outer is received
Contain lance holder 7 and intension lance holder 8.
Intension jet pipe 3 is fixed on by intension lance holder 8 and received on expansion type Laval nozzle 2, and outer culvert jet pipe 1 passes through outer culvert
Lance holder 7, which is fixed on, to be received on expansion type Laval nozzle 2, and having installation side on receipts expansion type Laval nozzle 2, (Fig. 4 is illustrated that
The left end of Laval nozzle 2), for being connect with engine other parts, outer culvert lance holder 7 is with intension lance holder 8
Hollow shape；Receiving lead telluride thermoelectric material element is disposed between the outside wall surface of expansion type Laval nozzle 2 and outer culvert radome fairing 5
4, lead telluride thermoelectric material element 4, outer culvert radome fairing 5 are also disposed between the internal face of intension jet pipe 3 and intension radome fairing 6
It is used to fix lead telluride thermoelectric material element 4 with intension radome fairing 6, and reduces the outer flowing for containing air-flow and intension air-flow respectively
Loss, it is outer to contain the material of radome fairing 5 and the selection of intension radome fairing 6 with excellent thermal conduction characteristic.
It is on outer culvert 1 wall surface of jet pipe and outer on the wall surface of receipts expansion type Laval nozzle 2 on the wall surface of intension jet pipe 3
Containing on the wall surface of radome fairing 5 has hole slot；Intension jet pipe 3 is with receiving hole slot and intension jet pipe on 2 wall surface of expansion type Laval nozzle
The position of stent 8 corresponds to, convenient for thermoelectric material element 4 lead connection (the outer thermoelectric material element 4 contained in radome fairing 5 with it is interior
Containing the thermoelectric material element 4 in radome fairing 6 passes through the inner cavity of intension lance holder 8 to interconnect)；Outer culvert jet pipe 1 and outer culvert are whole
Hole slot on stream 5 wall surfaces of cover is corresponding with the outer position for containing lance holder 7, (outer to contain convenient for the export of the lead of thermoelectric material element 4
The lead of thermoelectric material element 4 in radome fairing 5 passes through the outer inner cavity for containing lance holder 7 to be exported from outer culvert jet pipe 1, for exporting
Electric current).Air-flow to ensure high temperature and pressure becomes supersonic flow after venturi, by outer culvert jet pipe 1 with receiving expansion type Lavalle
The runner that jet pipe 2 is formed is designed to contraction channel, the runner that receipts expansion type Laval nozzle 2 is formed with intension jet pipe 3 along flow direction
It is designed to first shrink the channel expanded afterwards along flow direction, the runner of intension jet pipe 3 is designed to contraction shape channel along flow direction.
The outer lance holder 7 and the quantity of intension lance holder 8 contained can be 4 or more, circumferentially equal along the axis of jet pipe
Cloth.
Since by-pass air duct low-temp low-pressure air velocity is relatively low, the outer cross section for containing lance holder 7 is designed to air foil shape,
To reduce the flow losses of air-flow, as shown in Figure 2；Main duct high-temperature high-pressure fuel gas flow velocity is higher, is being flowed to reduce high-speed flow
It is lost caused by the factors such as frictional resistance, shock wave in dynamic, the cross section of intension lance holder 8 is designed to diamond pattern shape, such as
Shown in Fig. 3.
When exhaust nozzle, received in expansion type Laval nozzle 2 as shown in fig. 6, high-temperature high-speed airflow flows into, air-flow static temperature
Decline, static pressure declines, and speed rises, and speed reaches local velocity of sound at venturi, and then, air-flow continues to expand, air-flow static temperature, quiet
Pressure continues to decline, and speed continues to rise, and becomes supersonic flow in jet pipe exit, and high temperature ultrasonic speed air-flow causes intension to spray
The wall surface of pipe 3 and the wall surface temperature raising for receiving expansion type Laval nozzle 2；There is temperature in intension jet pipe 3 and outer culvert jet pipe 1 simultaneously
Relatively low low speed flow is spent to flow through, what the wall surface of wall surface and intension jet pipe 3 that low temperature low speed flow obtains Laval nozzle 2 transmitted
Heat is contained shrink channel with constantly accelerating in intension contraction channel outside, and in jet pipe exit, low temperature low speed flow becomes low
Warm high-speed flow finally realizes the effect for increasing nozzle thrust together with supersonic flow.
The low-temperature airflow of the high temperature gas flow of constant flow and constant flow in outer culvert jet pipe 1 in Laval nozzle 2 so that
It receives and generates a temperature gradient between the wall surface of expansion type Laval nozzle 2 and outer culvert radome fairing 5, receiving expansion type Laval nozzle 2
Outside wall surface and the outer gap contained between radome fairing 5 in the lead telluride thermoelectric material element 4 that lays using this temperature gradient into
Row power generation, as shown in fig. 7, the partial heat in heat transfer process can be converted into electric energy by thermoelectric material element 4, this generated electricity
Journey further increases Laval nozzle 2 and the outer heat exchange amount contained between jet pipe 1 so that the high temperature ultrasonic in Laval nozzle 2
The stagnation pressure of fast air-flow gets a promotion；There is also certain temperature ladders equally between the wall surface of intension jet pipe 3 and intension radome fairing 6
Degree, is generated electricity using lead telluride thermoelectric material element 4, can equally increase the High Mach number gas received in expansion type Laval nozzle 2
The reduction of heat effect of stream increases heat exchange amount, promotes the stagnation pressure of the high temperature ultrasonic speed air-flow in Laval nozzle 2, starts so as to improve
The thrust of machine.
In addition, the partial heat energy in heat transfer process is changed into electric energy using lead telluride thermoelectric material element 4, not only have
This part electric energy by lead from outer culvert jet pipe 1 export can be also conveyed to and started by enhancing heat exchange, the effect for promoting air-flow stagnation pressure
Machine does other purposes, realizes making full use of for heat, improves the efficiency of engine, and engine is made to realize more economical and environmentally friendly mesh
's.
Disclosed technique scheme is particularly suitable for hypersonic turbojet engine and small Bypass Ratio Turbofan Engine.
It will be understood by those of skill in the art that the above embodiment is used for the purpose of clearly demonstrating the disclosure, and simultaneously
Non- is that the scope of the present disclosure is defined.For those skilled in the art, may be used also on the basis of disclosed above
To make other variations or modification, and these variations or modification are still in the scope of the present disclosure.
Claims (9)
1. using air-flow heat exchange increase thrust jet pipe, which is characterized in that including it is outer culvert jet pipe (1), Laval nozzle (2),
Intension jet pipe (3), outer culvert lance holder (7) and intension lance holder (8)；
The intension jet pipe (3), the intension lance holder (8), the Laval nozzle (2), the outer culvert lance holder (7)
And the outer culvert jet pipe (1) is configured successively along the radial direction of the jet pipe；
The outer culvert jet pipe (1) is fixedly connected by the outer culvert lance holder (7) with the Laval nozzle (2)；
The intension jet pipe (3) is fixedly connected by the intension lance holder (8) with the Laval nozzle (2)；
The Laval nozzle (2) is receives expansion type jet pipe, the Laval nozzle (2) and the outer stream contained jet pipe (1) and formed
After road is first shunk along flow direction in the runner that collapsed shape, the Laval nozzle (2) and the intension jet pipe (3) are formed along flow direction
Expansion, the runner edge flow direction of the intension jet pipe (3) is in collapsed shape.
2. jet pipe according to claim 1, which is characterized in that the jet pipe further includes outer culvert radome fairing (5), described
Outer culvert radome fairing (5) is fixedly connected with the outside wall surface of the Laval nozzle (2), the outer culvert radome fairing (5) and the Bearing score
There is gap between the outside wall surface of your jet pipe (2).
3. jet pipe according to claim 1 or 2, which is characterized in that the jet pipe further includes intension radome fairing (6),
The intension radome fairing (6) is fixedly connected with the internal face of the intension jet pipe (3), the intension radome fairing (6) with it is described interior
There is gap between the internal face of culvert jet pipe (3).
4. the jet pipe according to Claims 2 or 3, which is characterized in that the jet pipe further includes thermoelectric material element
(4), the thermoelectric material element (4) converts thermal energy into electric energy, and thermoelectric material element (4) configuration is in the outer culvert rectification
It covers between (5) and the outside wall surface of the Laval nozzle (2) and configuration is sprayed in the intension radome fairing (6) and the intension
Between the internal face for managing (3).
5. jet pipe according to claim 4, which is characterized in that the outer wall surface for containing jet pipe (1) is equipped with the first hole
Slot, the wall surface of the Laval nozzle (2) are equipped with the second hole slot, and the wall surface of the intension jet pipe (3) is equipped with third hole slot,
The outer wall surface for containing radome fairing (5) is equipped with the 4th hole slot, and first hole slot is used for the thermoelectricity with the 4th hole slot
The export of the lead of material elements (4), second hole slot drawing for thermoelectric material element (4) with the third hole slot
The connection of line.
6. jet pipe according to claim 5, which is characterized in that the position pair of first hole slot and the 4th hole slot
Answer the outer culvert lance holder (7), second hole slot intension lance holder corresponding with the position of the third hole slot
(8)。
7. the jet pipe according to claim 1 or 6, which is characterized in that the outer culvert lance holder (7) is sprayed with the intension
Pipe holder (8) is hollow structure, and the shape in the outer cross section for containing lance holder (7) is aerofoil profile, the intension jet pipe branch
The shape in the cross section of frame (8) is diamond pattern.
8. jet pipe according to claim 4, which is characterized in that the thermoelectric material element (4) is lead telluride thermoelectricity material
Expect element.
9. according to claim 1-8 any one of them jet pipes, which is characterized in that it is described it is outer culvert radome fairing (5) with it is described interior
Contain radome fairing (6) using the material with thermal conduction characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159751.6A CN108252820A (en) | 2018-02-26 | 2018-02-26 | Being exchanged heat using air-flow increases the jet pipe of thrust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159751.6A CN108252820A (en) | 2018-02-26 | 2018-02-26 | Being exchanged heat using air-flow increases the jet pipe of thrust |
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| CN108252820A true CN108252820A (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009979A (en) * | 2019-05-07 | 2019-07-12 | 中国人民解放军国防科技大学 | Laval nozzle demonstration device and system |
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|---|---|---|---|---|
| SU1216454A1 (en) * | 1984-01-16 | 1986-03-07 | Краматорский Индустриальный Институт | Gas ejector |
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