CN206638639U - Combustion test equipment - Google Patents
Combustion test equipment Download PDFInfo
- Publication number
- CN206638639U CN206638639U CN201621436501.5U CN201621436501U CN206638639U CN 206638639 U CN206638639 U CN 206638639U CN 201621436501 U CN201621436501 U CN 201621436501U CN 206638639 U CN206638639 U CN 206638639U
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- CN
- China
- Prior art keywords
- inner cylinder
- inlet pipe
- spray bar
- outer barrel
- test equipment
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- 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
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Abstract
It the utility model is related to oil burner field, there is provided a kind of combustion test equipment.The equipment includes outer barrel and is arranged in outer barrel and the inner cylinder to form annular inlet chamber is limited with outer barrel, by being arranged on the one-level spray bar and one-level air inlet pipe of inner cylinder inlet end, forms the flame for being distributed mainly on inner cylinder center；Annular inlet chamber connects with the inlet end of inner cylinder, outer wall of the gas that the secondary inlet pipe in annular inlet chamber sprays along inner cylinder is set to flow downward and enter in inner cylinder with this, in addition again by the guide functions of the circular passage formed between one-level air inlet pipe and the inlet end of inner cylinder, said flow is set to be flowed up further along the inwall of inner cylinder, the fuel mixed combustion finally sprayed with two level spray bar, so it can not only also form flame in the fringe region of inner cylinder, and air-flow can be by inner cylinder heat temperature raising, therefore the fuel that two level spray bar can also be kept to spray can fully burn, equally distributed flame is formed at the exhaust end of outer barrel with this.
Description
Technical field
It the utility model is related to oil burner field, there is provided a kind of combustion test equipment.
Background technology
In aerospace field, so two kinds of parts be present：One kind be long-term work in high temperature environments, it is resistance to
Hot temperature and duration are the leading indicators for examining its performance and security, the combustion chamber of such as aero-gas turbine, turbine part.
Another kind be it is specific or can in particular cases bear for when shorter hot environment test, such as, once aircraft has an accident
Ask black box " survival " half an hour can be exceeded in the high temperature more than 1,000 degrees Celsius；During spacecraft reentry, shell needs
Bear due to air high-speed friction caused by high temperature etc..
Because the parts of both the above type are bound to or may contacted hot environment in the course of the work, to ensure
Its reliability and security, need to carry out heat-resistance test in the design phase, i.e., it is right under the conditions of design temperature and heat flow density
The time of part heating is not shorter than design duration, then examines its intensity in high temperature environments, rigidity etc., or test its pole
Limit the life-span, destroy duration.
Although fully automatic fuel-oil burner brand, specification are various both at home and abroad at present, its structural principle and the basic phase of function
Together, it is mainly used in the heating of the occasions such as boiler, kiln.The virtuous national strength and prestige rope of burner famous brand name, Britain's power prestige etc..Through analytics
Card, existing conventional fuel oil burner are not suitable for the heat-resisting of big-and-middle-sized (yardstick is in several tens cm~several meters of magnitudes) hot-end component
Property experiment, main cause has at following 2 points：
(1) it is usually cylindricality flame caused by conventional fuel oil burner, flame diverse location temperature is different, even if same flat
Face, there is also larger difference for ectonexine flame temperature, it is difficult to which the diverse location of large component is uniformly heated.
(2) flame diameter (combustion head bore) of conventional fuel oil burner is substantially directly proportional to power.With German prestige Suo Ran
Exemplified by burner, the combustion head bore of its large-scale combustors can reach about one meter, but its power is up to 18MW, heat flow density mistake
Greatly, energy consumption is surprising.
Utility model content
(1) technical problems to be solved
The purpose of this utility model is to provide that a kind of burning things which may cause a fire disaster area is larger and flame diverse location temperature is more uniform and energy consumption
Relatively low combustion test equipment.
(2) technical scheme
To achieve the above object, the utility model provides a kind of combustion test equipment, and the equipment includes outer barrel and set
Put in the outer barrel and the inner cylinder to form annular inlet chamber is limited with the outer barrel, the annular inlet chamber and the inner cylinder
Inlet end connection；Inserted with one-level air inlet pipe at the inlet end of the inner cylinder, the one-level air inlet pipe is interior to be provided with one-level oil spout
Pipe；Two level spray bar is provided with the inside of the inner cylinder and positioned at the top of the one-level air inlet pipe；In the annular inlet chamber
Secondary inlet pipe is provided with the exhaust end of the interior and close inner cylinder, outer wall of the secondary inlet pipe along the inner cylinder is circumferential
Extension, the secondary inlet pipe are provided with multiple steam vents.
Preferably, the internal diameter of the inner cylinder is gradually increased by inlet end to exhaust end.
Preferably, the steam vent is set towards the inner cylinder.
Preferably, on the direction of gas flowing, it is inserted into the part one-level air inlet pipe of the inlet end of the inner cylinder
Internal diameter gradually increase.
Preferably, the inlet end of the outer barrel is connected by first annular baffle plate with the outer wall of the one-level air inlet pipe, institute
Stating between the inlet end of first annular baffle plate and the inner cylinder has gap.
Preferably, the exhaust end of the inner cylinder is connected by the second ring baffle with the outer barrel.
Preferably, the middle part of the inner cylinder is connected by the 3rd ring baffle with the outer barrel, in the described 3rd annular gear
Multiple passages, week of multiple passages along the 3rd ring baffle are offered on plate and at the outer wall of the inner cylinder
To arrangement.
Preferably, the two level spray bar is set close to the inwall of the inner cylinder.
Preferably, the two level spray bar is overall helical structure, and the two level spray bar is provided with multiple combustions
Oil atomization hole.
Preferably, inlet end of the fuel-oil atmozation hole on the two level spray bar towards the inner cylinder.
(3) beneficial effect
A kind of combustion test equipment provided by the utility model, including outer barrel and be arranged in outer barrel and with outer barrel limit
The inner cylinder of annular inlet chamber is shaped as, by being arranged on the one-level spray bar and one-level air inlet pipe of inner cylinder inlet end, is formed main
It is distributed in the flame in inner cylinder center；Annular inlet chamber connects with the inlet end of inner cylinder, is made with this two in annular inlet chamber grading
Outer wall of the gas that tracheae sprays along inner cylinder flows downward and entered in inner cylinder, passes through one-level air inlet pipe and inner cylinder again in addition
Inlet end between the guide functions of circular passage that are formed, said flow is flowed up further along the inwall of inner cylinder, finally
The fuel mixed combustion sprayed with two level spray bar, so can not only also form flame, Er Qieqi in the fringe region of inner cylinder
Stream, can be by inner cylinder heat temperature raising during the outer wall along inner cylinder and inwall flow, therefore can also keep two level spray bar
The fuel of ejection can fully be burnt, and equally distributed flame is formed at the exhaust end of outer barrel with this, so as to by experiment material
Material forms uniform heating.
Brief description of the drawings
Fig. 1 is a kind of external view of combustion test equipment of the utility model embodiment.
Fig. 2 is a kind of sectional view one of combustion test equipment of the utility model embodiment.
Fig. 3 is a kind of sectional view two of combustion test equipment of the utility model embodiment.
Reference：
1st, outer barrel；11st, first annular baffle plate；12nd, the second ring baffle；13rd, the 3rd ring baffle；14th, supporting structure；2、
Inner cylinder；3rd, one-level air inlet pipe；4th, one-level spray bar；5th, secondary inlet pipe；6th, two level spray bar.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to the scope of the utility model.
, it is necessary to illustrate in description of the present utility model, unless otherwise clearly defined and limited, term " connection "
It should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can be direct phase
Even, can also be indirectly connected by intermediary.For the ordinary skill in the art, on being understood with concrete condition
State concrete meaning of the term in the utility model.
With reference to shown in Fig. 1 to Fig. 3, a kind of combustion test equipment that the utility model embodiment provides, including it is outer barrel 1, interior
Cylinder 2, one-level air inlet pipe 3, secondary inlet pipe 5, one-level oil inlet pipe and two level spray bar.
Outer barrel 1 can be cylinder-like structure, can be set by the standing of supporting structure 14, and lower end is inlet end, upper end
For exhaust end.Inner cylinder 2 is arranged on the inside of outer barrel 1, can limit shape between inner cylinder 2 and outer barrel 1 with 1 concentric setting of outer barrel
Into space be configured to annular inlet chamber, annular inlet chamber connects with the inlet end of inner cylinder 2, i.e., the gas in annular inlet chamber can
Entered by the inlet end of inner cylinder 2 in inner cylinder 2.
Secondary inlet pipe 5 is arranged in annular inlet chamber and at the exhaust end of inner cylinder 2, and secondary inlet pipe 5 is along inner cylinder
2 outer wall circumferentially extending, secondary inlet pipe 5 is provided with multiple steam vents, for injecting gas into annular inlet chamber；One is grading
The exhaust end of tracheae 3 is inserted in the inlet end of inner cylinder 2, and the part primary air inlet pipe 3 for being inserted into inner cylinder 2 can be same with inner cylinder 2
Axle center is set；One-level spray bar 4 is arranged in one-level air inlet pipe 3, and the fuel-oil atmozation hole of one-level spray bar 4 is substantially in inner cylinder 2
Inlet end at, the fuel-oil atmozation hole of the one-level spray bar 4 is generally also provided with igniter, for making to spray in one-level spray bar 4
The gas discharged of fuel and one-level air inlet pipe 3 combustion reaction occurs in inner cylinder 2；Two level spray bar is arranged on the interior of inner cylinder 2
Portion and the top for being located at one-level air inlet pipe 3, the preferably overall helical structure of two level spray bar 6, and two level spray bar 6
Multiple fuel-oil atmozation holes are provided with, so that fuel fully mixes with air-flow, moreover, two level spray bar 6 is close to preferably close to interior
The inwall of cylinder 2 is set, and the region residing for fuel gas that such two level spray bar 6 sprays more can be with the inwall along inner cylinder 2
The position of the air-flow flowed up is corresponding, is burnt near the inwall of inner cylinder；Certainly, two level spray bar 6 can also be distribution
In on the whole cross section of inner cylinder 2, and multiple fuel-oil atmozation holes only are opened up at the inside close to inner cylinder, can also so led
By fuel injection near the inwall of inner cylinder, and the part two level spray bar 6 positioned at inner cylinder middle section is then used to make to be heated,
It is more beneficial for evaporation, the atomization of its inner fuel；Fuel-oil atmozation hole on two level spray bar 6 towards inner cylinder 2 inlet end, so
The flame gas that can be formed with one-level spray bar 4 and the gas from secondary inlet pipe 5 form convection current, with lifting mixing effect
Fruit, the flame ignition that is sprayed by one-level spray bar 4 of fuel that two level spray bar 6 sprays, and mainly with annular inlet chamber
Gas occur combustion reaction.
When carrying out combustion test, on the one hand, the fuel that one-level oil inlet pipe sprays around it by one-level air inlet pipe 3 with being sprayed
Combustion reaction occurs for the gas come, combustion flame is formed in inner cylinder 2, but the fuel sprayed after all by one-level spray bar 4 collects more
In in the center of inner cylinder 2, so the flame that one-level spray bar 4 is formed also is concentrated mainly on the center of inner cylinder 2, the one-level oil spout
The flame that pipe 4 is formed may also pass through the structures such as eddy flow, speed reduction screen, flame concentration problem is improved, and expand flame model
Enclose.
On the other hand, the gas that secondary inlet pipe 5 sprays makes the air pressure in annular inlet chamber after annular inlet chamber is entered
Rise, and because annular inlet chamber is also connected by the inlet end and the inner space of inner cylinder 2 of inner cylinder 2, so annular inlet chamber
In gases at high pressure have to be entered in inner cylinder 2 by the inlet end of inner cylinder 2, the gas entered in inner cylinder 2 is along inner cylinder 2 and one
Circular passage between level air inlet pipe 3 flows up, not only can be to being sprayed from one-level after flowing in the upper space of inner cylinder 2
The fuel that oil pipe 4 is imperfect combustion forms afterburning, also primarily to being mixed and by one with the fuel that two level spray bar 6 sprays
The flame ignition that is formed of level spray bar 4, and in the process, due to the part primary air inlet pipe 3 that is inserted into inner cylinder 2 with it is interior
The guide functions of the circular passage formed between cylinder 2, the above-mentioned gas in annular inlet chamber is mainly along inner cylinder 2
Inwall is flowed up, and the fuel finally sprayed in the upper space of inner cylinder 2 at the region of cylinder inwall with two level spray bar 6 is formed
Burning, has thus filled up the defects of flame is weaker respectively at the fringe region in inner cylinder 2, the fire formed with one-level spray bar 4
Flame is engaged, and makes the flame distribution in inner cylinder 2 uniform, ensure that the heating-up temperature at diverse location is more uniformly distributed, so as to
Uniform heating is not only formed to the experiment at the exhaust end of outer barrel 1, to obtain accurate heat-resistance test data.
Further, since the gas temperature that secondary inlet pipe 5 sprays is relatively low, if the gas of this low temperature is directly discharged into inner cylinder
The fuel mixed combustion sprayed in 2 upper space, with two level spray bar 6, it can greatly suppress the initial of the ejection of two level spray bar 6
Combustion rate, the exhaust end for being additionally, since two level spray bar 6 apart from outer barrel 1 is closer to the distance, i.e., the fuel that two level spray bar 6 sprays
The distance of the gas mixing after-combustion sprayed with secondary inlet pipe 5 is shorter, under the influence of this double factor, can make two level oil spout
The burning for the fuel that pipe 6 sprays is extremely insufficient, therefore the opening that can hardly reach in outer barrel 1 forms the effect of uniform heating surface
Fruit.
Therefore, the utility model sets exhaust end of the secondary inlet pipe 5 close to inner cylinder 2, and the gas in annular inlet chamber
Body is finally to bypass the inlet end of inner cylinder 2 and entered in inner cylinder 2 again, and therefore, the gas that secondary inlet pipe 5 sprays generally is
Flowed downward close to the outer wall of inner cylinder 2, and gas is understood in certain journey during being flowed downward close to the outer wall of inner cylinder 2
Heated on degree by the outer wall of inner cylinder 2, and air-flow is after entering in inner cylinder 2, due to by between inner cylinder 2 and one-level air inlet pipe 3
The guide functions of circular passage, the inwall that gas may proceed to generally close to inner cylinder 2 flow up, so not only can be in inner cylinder
The fringe region of 2 upper spaces forms excess air, forms burning with the fuel sprayed with two level spray bar 6, can also be interior
The inwall of cylinder 2 further heats, and so when air-flow rises to the fuel-bound sprayed with two level spray bar 6, has reached very
High temperature, and the fuel in two level spray bar 6 can also be heated up before ejection by the baking of flame, such higher temperature
Fuel is after the gas mixing with higher temperature, even if burning extent is shorter, still is able to ensure fully to burn, be finally reached with it is interior
The equal temperature of flame of cylinder middle section.
In addition, secondary inlet pipe 5 spray gas during the inwall and outer wall of inner cylinder 2 is flowed through, also can be to inner cylinder 2
Certain cooling effect is formed, thus, this equipment will not limit the heating temperature to test material because of the heat-resistant limit of inner cylinder 2
Degree, and it is beneficial to the service life for extending inner cylinder 2.
Wherein, the internal diameter of inner cylinder 2 is preferably gradually increased by inlet end to exhaust end, i.e., inner cylinder 2 is generally a butt
Pyramidal structure, the fuel that one-level spray bar 4 sprays is typically radial, and the fuel of ejection is that surrounding comes from one-level air inlet pipe 3
Gas burning during, the volumetric expansion of mixed gas, larger heating surface is finally reached at the exhaust end of outer barrel 1
Product, to meet the heat-resistance test requirement to large-scale material.
Further, the steam vent on secondary inlet pipe 5 is set preferably towards inner cylinder 2, because the barrel of inner cylinder 2 is cone
Face structure, so after the gas sprayed by the steam vent on secondary inlet pipe 5 is on the outer wall for blowing to inner cylinder 2, made by inclined-plane
With the outer wall that may proceed to downwards and be close to inner cylinder 2 flows, and thus can further improve heating of the outer wall to gas of inner cylinder 2
Effect, it can also improve the cooling effect to inner cylinder 2.
Gas flowing direction on, be inserted into the inlet end of inner cylinder 2 part primary air inlet pipe internal diameter be preferably by
It is cumulative big, the burning for the fuel that one-level spray bar 4 is sprayed so not only is more suitable for, but also can be with the formation phase of inner cylinder 2
Corresponding, that is, the circular passage formed between the part primary air inlet pipe 3 and inner cylinder 2 that are inserted into inner cylinder 2 is also to be integrally conical
Space structure, the inwall by the air flow guiding in annular inlet chamber to inner cylinder 2.
The inlet end of outer barrel 1 is connected by first annular baffle plate 11 with the outer wall of one-level air inlet pipe 3, first annular baffle plate 11
There is gap between the inlet end of inner cylinder 2, connection is so on the one hand established between one-level air inlet pipe 3 and outer barrel 1 and is closed
System, is relatively fixed the two, but also self-assembling formation is used to make annular air inlet between the inlet end of a ring baffle and inner cylinder 2
The passage that gas in chamber is entered in inner cylinder 2.
The exhaust end of inner cylinder 2 is connected by the second ring baffle 12 with outer barrel 1, so both can inner cylinder 2 and outer barrel 1 it
Between set up annexation, be relatively fixed the two, can also be by the closed upper part of annular inlet chamber.
The middle part of inner cylinder 2 is preferably connected by the 3rd ring baffle 13 with outer barrel 1, on the 3rd ring baffle 13 and is leaned on
Multiple passages are offered at the outer wall of nearly inner cylinder 2, multiple passages are circumferentially arranged along the 3rd ring baffle 13, the passage
Preferably elongated hole-shape structure, to possess more preferably passing through property；3rd ring baffle 13 can both be strengthened between inner cylinder 2 and outer barrel 1
Connection, and using passage of the 3rd ring baffle 13 at inner cylinder 2, in the way that air-flow flows downward, limit again
Determine outer wall of the air-flow along inner cylinder 2 to flow downward, further increase the heat exchange of air-flow and inner cylinder 2.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and replacement can also be made, these change
Enter and replace and also should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. combustion test equipment, it is characterised in that including outer barrel and be arranged in the outer barrel and with the outer barrel limit The inner cylinder of annular inlet chamber is shaped as, the annular inlet chamber connects with the inlet end of the inner cylinder；The inlet end of the inner cylinder Inserted with one-level air inlet pipe, the one-level air inlet pipe is interior to be provided with one-level spray bar at place；In the inside of the inner cylinder and positioned at described The top of one-level air inlet pipe is provided with two level spray bar；Set in the annular inlet chamber and at the exhaust end of the inner cylinder There is secondary inlet pipe, outer wall circumferentially extending of the secondary inlet pipe along the inner cylinder, the secondary inlet pipe is provided with multiple Steam vent.
- 2. combustion test equipment according to claim 1, it is characterised in that the internal diameter of the inner cylinder is by inlet end to exhaust End gradually increase.
- 3. combustion test equipment according to claim 2, it is characterised in that the steam vent is set towards the inner cylinder.
- 4. combustion test equipment according to claim 2, it is characterised in that on the direction of gas flowing, be inserted into institute The internal diameter for stating the part one-level air inlet pipe of the inlet end of inner cylinder gradually increases.
- 5. combustion test equipment according to claim 1, it is characterised in that the inlet end of the outer barrel passes through first annular Baffle plate is connected with the outer wall of the one-level air inlet pipe, between having between the first annular baffle plate and the inlet end of the inner cylinder Gap.
- 6. combustion test equipment according to claim 1, it is characterised in that the exhaust end of the inner cylinder passes through the second annular Baffle plate is connected with the outer barrel.
- 7. combustion test equipment according to claim 1, it is characterised in that the middle part of the inner cylinder is kept off by the 3rd annular Plate is connected with the outer barrel, and multiple passages are offered on the 3rd ring baffle and at the outer wall of the inner cylinder, Multiple passages are circumferentially arranged along the 3rd ring baffle.
- 8. combustion test equipment according to claim 1, it is characterised in that the two level spray bar is close to the inner cylinder Inwall is set.
- 9. combustion test equipment according to claim 1, it is characterised in that the two level spray bar for it is overall helically The structure of shape, the two level spray bar are provided with multiple fuel-oil atmozation holes.
- 10. combustion test equipment according to claim 9, it is characterised in that the fuel-oil atmozation on the two level spray bar Inlet end of the hole towards the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436501.5U CN206638639U (en) | 2016-12-23 | 2016-12-23 | Combustion test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436501.5U CN206638639U (en) | 2016-12-23 | 2016-12-23 | Combustion test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206638639U true CN206638639U (en) | 2017-11-14 |
Family
ID=60260140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621436501.5U Expired - Fee Related CN206638639U (en) | 2016-12-23 | 2016-12-23 | Combustion test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206638639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064408A (en) * | 2016-12-23 | 2017-08-18 | 北京航空航天大学 | Combustion test equipment |
-
2016
- 2016-12-23 CN CN201621436501.5U patent/CN206638639U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064408A (en) * | 2016-12-23 | 2017-08-18 | 北京航空航天大学 | Combustion test equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20191223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |