CN204987086U - Concave surface chamber combustion chamber is with netted cooling device of fingerprint - Google Patents
Concave surface chamber combustion chamber is with netted cooling device of fingerprint Download PDFInfo
- Publication number
- CN204987086U CN204987086U CN201520251509.3U CN201520251509U CN204987086U CN 204987086 U CN204987086 U CN 204987086U CN 201520251509 U CN201520251509 U CN 201520251509U CN 204987086 U CN204987086 U CN 204987086U
- Authority
- CN
- China
- Prior art keywords
- concave surface
- chamber
- cooling device
- oil
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Spray-Type Burners (AREA)
Abstract
The utility model discloses a concave surface chamber combustion chamber is with netted cooling device of fingerprint, include: the end cover, it is inside to be equipped with the oil feed and to hold the chamber and produce oil and hold the chamber, one side of end cover is equipped with the inlet port, the opposite side is equipped with the oil outlet, the inlet port holds the chamber intercommunication with the oil feed, the oil outlet holds chamber intercommunication with producing oil, locate the concave surface chamber in the end cover, this concave surface chamber end edge is connected with end cover end edge, and the middle part is passed through fixing bolt with the end cover and is connected, and this concave surface intracavity portion is equipped with cooling channel, and this cooling channel one end and oil feed hold the chamber and communicate, the other end and produce oil and hold the chamber and communicate. The utility model provides a cooling device has makes that concave surface chamber chamber cooling is even more, cooling efficiency is higher, the littleer advantage of cooling fuel demand.
Description
[technical field]
The utility model belongs to engine apparatus field, relates to a kind of cooling device, is specifically related to the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint.
[background technology]
Pulse-knocking engine (PulseDetonationEngine, hereinafter referred to as PDE) is that a kind of batch (-type) or pulsed detonation wave of utilizing produces high high-temperature high-pressure fuel gas to produce the engine of thrust.The performance advantage that PDE is high with its thermal efficiency of cycle, oil consumption rate is low, structure is simple, thrust-weight ratio is high, working range is broad etc., is known as one of aircraft power plant of 21 century most future by each aviation big country of the world.
In recent years, in PDE technical research, there is a kind of novel efficiency compact high combustion chamber-concave surface cavity combustion chamber.But, concave surface cavate combustion chamber is in the course of the work due to the cyclical heat load of PDE detonating combustion, easy initiation concave surface chamber wall Thermal Fatigue Damage, particularly in higher operating frequency with under the longer working time, the impact of pulsation thermal shock is more outstanding, and this will badly influence stability, reliability and the service life of PDE work.
At present, the mode cooled PDE combustion chamber is gaseous film control, impinging cooling etc., but these types of cooling can take the air mass flow of PDE, and PDE thrust is declined, and oil consumption rate increases, thus affects its overall performance.Meanwhile, the research report seen and carry out cooling for concave surface cavity combustion chamber is not also had at present.
[utility model content]
For the problems referred to above, the utility model provides a kind of concave surface cavity combustion chamber fingerprint netted cooling device, cause that PDE oil consumption rate is high in order to solve the type of cooling of the prior art, thrust declines and affect the problem of its performance, open the new way for the cooling of concave surface cavity combustion chamber.
The utility model is achieved through the following technical solutions, and provides a kind of concave surface cavity combustion chamber fingerprint netted cooling device, comprising:
End cap, its inside is provided with oil-feed container cavity and fuel-displaced container cavity, and the side of described end cap is provided with fuel feed hole, opposite side is provided with oil outlet, and described fuel feed hole is communicated with oil-feed container cavity, and described oil outlet is communicated with fuel-displaced container cavity;
Be located at the concave surface chamber in end cap, this concave surface chamber end edge is connected with end cap end edge, and middle part is connected by set bolt with end cap, and this inside, concave surface chamber is provided with cooling duct, this one end, cooling duct is communicated with oil-feed container cavity, and the other end is communicated with fuel-displaced container cavity.
Especially, cross section, described concave surface chamber is arc.
Especially, described cooling duct comprises: the entrance axially arranged in middle part, concave surface chamber, and it is connected with oil-feed container cavity; Along some annular channels that concave surface chamber circumference sets gradually, two adjacent annular channels are connected by the passage axially arranged along concave surface chamber, and the axial angle of described each annular channel two wing passage is θ; Two outlets, its one end is communicated with cooling duct, and the other end is connected with fuel-displaced container cavity; Described entrance is connected with annular channel by passage.
Especially, described two adjacent annular channels are connected by the passage that two of arranging axial along concave surface chamber are symmetrical, and the axial angle theta of described each annular channel two wing passage is 90 °.
Especially, also comprise: the lining fitted with concave surface cavity outer wall, this lining is provided with and exports corresponding through hole, and this through hole is communicated with fuel-displaced container cavity.
Especially, also comprise: be located at the gripper shoe between oil-feed container cavity and fuel-displaced container cavity, one end of this gripper shoe is connected with end cap inwall, and the other end is connected with lining.
Especially, the width of described annular channel is d, and the wall thickness between described adjacent annular runner is the ratio between D, D and d is 1 ~ 2.
Especially, the material of described lining is graphite.
Especially, the cross section in described concave surface chamber is hemispherical or semielliptical shape.
Compared to prior art, the utility model provides a kind of concave surface cavity combustion chamber fingerprint netted cooling device, by the setting of oil-feed container cavity, concave surface chamber, fuel-displaced container cavity, especially the setting of cooling duct in concave surface chamber, add film-cooled heat, concave surface cavity combustion chamber is had, and cooling is more even, cooling effectiveness is higher, cool the less advantage of fuel demand amount; Adopt this cooling device to cool in the process of fuel oil, the temperature of fuel oil is improved, thus improve combustion oil atomization, evaporation and blending quality.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the netted cooling device of a kind of concave surface of the utility model cavity combustion chamber fingerprint;
Fig. 2 is a side view in concave surface chamber in the netted cooling device of a kind of concave surface of the utility model cavity combustion chamber fingerprint;
Fig. 3 is the opposite side view in concave surface chamber in the netted cooling device of a kind of concave surface of the utility model cavity combustion chamber fingerprint.
[detailed description of the invention]
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, the utility model is further described.
Refer to Fig. 1-Fig. 3, the utility model provides a kind of concave surface cavity combustion chamber fingerprint netted cooling device, comprising:
End cap 1, its inside is provided with oil-feed container cavity 2 and fuel-displaced container cavity 3, and the side of described end cap 3 is provided with fuel feed hole 4, opposite side is provided with oil outlet 5, and described fuel feed hole 4 is communicated with oil-feed container cavity 2, and described oil outlet 5 is communicated with fuel-displaced container cavity 3;
Be located at the concave surface chamber 6 in end cap 3, this concave surface chamber 6 end edge is connected with end cap 3 end edge, and middle part is connected by set bolt with end cap 3, and this inside, concave surface chamber 6 is provided with cooling duct 7, this one end, cooling duct 7 is communicated with oil-feed container cavity 2, and the other end is communicated with fuel-displaced container cavity 3.
Especially, more even in order to ensure the cooling of cooling device, described cooling duct 7 comprises: the entrance 8 axially arranged in middle part, concave surface chamber 6, and it is connected with oil-feed container cavity 2; Along some annular channels 9 that concave surface chamber 6 circumference sets gradually, described annular channel 9 is arranged step by step along concave surface chamber 6 centered by entrance 8, and adjacent annular channel 9 is connected by the passage 11 axially arranged along concave surface chamber 6, the axial angle of described each annular channel 9 liang of wing passages 11 is θ; Two outlets 10, its one end is communicated with cooling duct 7, and the other end is connected with fuel-displaced container cavity 3; Described entrance 8 is connected with near entrance 8 place annular channel 9 by passage 11, and in the utility model, the quantity of annular channel 9 is more, and cooling effectiveness is higher.
Especially, described adjacent two annular channels 9 are connected by the passage 11 that two of arranging axial along concave surface chamber 6 are symmetrical, the axial angle theta of described each annular channel 9 liang of wing passages 11 is 90 °, setting like this, the time making an annular channel 9 flow into next circular passage 11 through passage 11 is identical, thus make the cooling in concave surface chamber 6 more even, further increase the cooling effect of cooling device.
Especially, also comprise: the lining 12 fitted with concave surface chamber 6 outer wall, this lining 12 is provided with the through hole 14 corresponding with exporting 10; By the setting of lining 12, separated in end cap 1 and concave surface chamber 6, the material of described lining 12 is graphite, when avoiding PDE work, temperature is wherein passed to end cap 1 and affects the work of PDE.
Especially, also comprise: be located at the gripper shoe 13 between oil-feed container cavity 2 and fuel-displaced container cavity 3, one end of this gripper shoe 13 is connected with end cap 3 inwall, and the other end is connected with lining 12; By the setting of gripper shoe 13, concave surface chamber 6 is played to the effect of fixed support, ensure the concentricity of itself and end cap 1 simultaneously, make the cooling of the 6 pairs of fuel oils in concave surface chamber more even, improve the operating efficiency of cooling device.
Especially, the width of described annular channel 9 is d, and the wall thickness between described adjacent annular runner 9 is D, ratio between D and d can affect the cooling effect in concave surface chamber 6, when ratio is less than 1, the structural strength in concave surface chamber 6 is inadequate, can affect the service life in concave surface chamber 6; When ratio is greater than 2, cooling effect is bad.In the utility model, the ratio of D and d selects 1 ~ 2, while guarantee concave surface chamber 6 service life, make cooling effect reach optimum, when ratio is between 1 ~ 2, the closer to ratio 1 while guarantee concave surface chamber 6 service life, make the cooling effect in concave surface chamber 6 better, ratio is the closer to 2 while guarantee cooling effect, and the service life in concave surface chamber is higher.
The concave surface chamber that the utility model provides is a part that is spherical or elliposoidal, as: hemispherical or 1/4th spherical or semielliptical shape or 1/4th elliposoidals etc.
Operation principle:
In the utility model, the cooling agent passing into cooling device is fuel oil.Its cooling general principle is: when fuel oil flows fast in this cooling device, on the one hand, and the specific heat capacity of fuel oil is large, and heat transfer efficiency is high, can take away the heat of high-temperature wall surface fast; On the other hand, the heat exchange area of this cooling device is comparatively large, and this makes fuel oil and high-temperature wall surface energy fully heat-shift, thus reaches good cooling effect.Meanwhile, this process can improve the temperature of fuel oil, improves combustion oil atomization, evaporation and blending quality, improves efficiency of combustion, thus turned waste into wealth by the heat in concave surface chamber.
The course of work:
In time working, fuel oil enters oil-feed container cavity 5 along fuel feed hole 4; Entrance 8 afterwards along concave surface chamber 6 enters first group of (often organizing two) passage 11, is divided into two strands, afterwards along first annular channel 9 circumferential flow after fuel oil flow pass 11; The fuel oil of opposite course pools one at next group passage 11 place and flows into next annular channel 9 afterwards, so repeats, until fuel oil flows into fuel-displaced container cavity 3 along outlet 10; Fuel oil afterwards in fuel-displaced container cavity 3 flows out along oil outlet 5, and so circulation is until end-of-job, namely completes the cooling of PDE combustion chamber.In Fig. 1-Fig. 3, the flow direction of fuel oil in cooling device as shown by arrows.
It should be noted that, the netted cooling structure of fingerprint in the cooling device that the utility model provides, is not only applicable to the cooling of PDE concave surface cavity combustion chamber in aviation field, is equally applicable to device that any need in other field carry out cooling or equipment or mechanism etc.For those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to the utility model claims.
Claims (9)
1. the netted cooling device of concave surface cavity combustion chamber fingerprint, is characterized in that, comprising:
End cap (1), its inside is provided with oil-feed container cavity (2) and fuel-displaced container cavity (3), the side of described end cap (3) is provided with fuel feed hole (4), opposite side is provided with oil outlet (5), described fuel feed hole (4) is communicated with oil-feed container cavity (2), and described oil outlet (5) is communicated with fuel-displaced container cavity (3);
Be located at the concave surface chamber (6) in end cap (3), this concave surface chamber (6) end edge is connected with end cap (3) end edge, middle part is connected by set bolt with end cap (3), this concave surface chamber (6) inside is provided with cooling duct (7), this cooling duct (7) one end is communicated with oil-feed container cavity (2), and the other end is communicated with fuel-displaced container cavity (3).
2. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 1, is characterized in that, the cross section of described concave surface chamber (6) is arc.
3. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 1, is characterized in that, described cooling duct (7) comprising:
The entrance (8) axially arranged in concave surface chamber (6) middle part, it is connected with oil-feed container cavity (2);
Along some annular channels (9) that concave surface chamber (6) circumference sets gradually, two adjacent annular channels (9) are connected by the passage (11) axially arranged along concave surface chamber (6), and the axial angle of described each annular channel (9) two wing passage (11) is θ;
Two outlets (10), its one end is communicated with cooling duct (7), and the other end is connected with fuel-displaced container cavity (3);
Described entrance (8) is connected with annular channel (9) by passage (11).
4. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 3, it is characterized in that, described two adjacent annular channels (6) are connected by the passage (11) symmetrical along concave surface chamber (6) axial two of arranging, and the axial angle theta of described each annular channel (9) two wing passage (11) is 90 °.
5. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 1, it is characterized in that, also comprise: the lining (12) fitted with concave surface chamber (6) outer wall, this lining (12) is provided with the through hole (14) corresponding with exporting (10), and this through hole (14) is communicated with fuel-displaced container cavity (3).
6. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 5, it is characterized in that, also comprise: be located at the gripper shoe (13) between oil-feed container cavity (2) and fuel-displaced container cavity (3), one end of this gripper shoe (13) is connected with end cap (3) inwall, and the other end is connected with lining (10).
7. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 3, it is characterized in that, the width of described annular channel (9) is d, and the wall thickness between described adjacent annular runner (9) is the ratio between D, D and d is 1 ~ 2.
8. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 5, is characterized in that, the material of described lining (10) is graphite.
9. the netted cooling device of a kind of concave surface cavity combustion chamber fingerprint according to claim 2, is characterized in that, the cross section of described concave surface chamber (6) is hemispherical or semielliptical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251509.3U CN204987086U (en) | 2015-04-23 | 2015-04-23 | Concave surface chamber combustion chamber is with netted cooling device of fingerprint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251509.3U CN204987086U (en) | 2015-04-23 | 2015-04-23 | Concave surface chamber combustion chamber is with netted cooling device of fingerprint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204987086U true CN204987086U (en) | 2016-01-20 |
Family
ID=55121452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520251509.3U Expired - Fee Related CN204987086U (en) | 2015-04-23 | 2015-04-23 | Concave surface chamber combustion chamber is with netted cooling device of fingerprint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204987086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832948A (en) * | 2015-04-23 | 2015-08-12 | 中国人民解放军空军工程大学 | Fingerprint mesh cooling device for concave cavity combustion chamber |
| CN109556136A (en) * | 2017-09-25 | 2019-04-02 | 通用电气公司 | Gas turbine assemblies and method for inhibiting its pressure fluctuation |
-
2015
- 2015-04-23 CN CN201520251509.3U patent/CN204987086U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832948A (en) * | 2015-04-23 | 2015-08-12 | 中国人民解放军空军工程大学 | Fingerprint mesh cooling device for concave cavity combustion chamber |
| CN109556136A (en) * | 2017-09-25 | 2019-04-02 | 通用电气公司 | Gas turbine assemblies and method for inhibiting its pressure fluctuation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2899370B1 (en) | Turbine blade having swirling cooling channel and cooling method thereof | |
| CN103133138A (en) | Internal combustion wave rotor based on non-constant combustion and with pressurization function and working method thereof | |
| CN104196571B (en) | A kind of method and its device for improving turbine engine efficiency | |
| CN109915856B (en) | Afterburning chamber rectification extension board structure | |
| CN204987086U (en) | Concave surface chamber combustion chamber is with netted cooling device of fingerprint | |
| CN203464332U (en) | Transition section of combustion chamber of combustion gas turbine | |
| CN105114266B (en) | Power device using heat pump technology | |
| KR101092783B1 (en) | Gas turbine | |
| CN105275499A (en) | Disc center air inlet structure of double-radial-plate turbine disc with centrifugal pressurization effect and sealing effect | |
| CN102381480B (en) | Warm spray power device for blade tip gas injection | |
| CN104832948A (en) | Fingerprint mesh cooling device for concave cavity combustion chamber | |
| CN112282858B (en) | Gas turbine blade cooling structure based on memory alloy | |
| CN104963774A (en) | Novel turbine | |
| CN210289846U (en) | Shrouded cooling turbine rotor blade leading edge cooling structure | |
| CN209430308U (en) | Gas heating system based on Stirling thermal engine operating heat dump | |
| CN103388584A (en) | Radiator for reducing stress and trimmer pressure | |
| CN204084461U (en) | A kind of water conservancy diversion lining with the gas-turbine combustion chamber of refrigerating function | |
| CN204591484U (en) | A kind of gas turbine combustion Press cylinder device | |
| CN205977417U (en) | Gas turbine engine of rotatory combustion chamber | |
| CN109736898A (en) | A kind of blade inlet edge gaseous film control pore structure of staggeredly compound angle | |
| CN204404235U (en) | A kind of gas-turbine combustion chamber changeover portion with cooling structure | |
| CN2814159Y (en) | Composite thermal accumulating combustor | |
| CN203374489U (en) | Radiator capable of reducing stress and buffering pressure | |
| CN202012398U (en) | Thermodynamic device of turbofan engine | |
| CN208281062U (en) | A kind of system using liquid oxygen misting cooling heat engine inlet air |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Xin Inventor after: Tan Sheng Inventor after: Cheng Li Inventor after: Zhu Xiaobin Inventor after: He Liming Inventor after: Wang Yuqian Inventor before: Chen Xin Inventor before: Tan Sheng Inventor before: Cheng Li Inventor before: Zhu Xiaobin Inventor before: He Liming Inventor before: Wang Yuqian |
|
| COR | Change of bibliographic data | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20170423 |