CN109187039A - A kind of injection uniformity detection of blade jet-type swirl device - Google Patents

A kind of injection uniformity detection of blade jet-type swirl device Download PDF

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Publication number
CN109187039A
CN109187039A CN201810746389.2A CN201810746389A CN109187039A CN 109187039 A CN109187039 A CN 109187039A CN 201810746389 A CN201810746389 A CN 201810746389A CN 109187039 A CN109187039 A CN 109187039A
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China
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base body
blade
cyclone
oil outlet
type swirl
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CN201810746389.2A
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CN109187039B (en
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张弛
王叶欣
王志超
林宇震
王建臣
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Beihang University
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Beihang University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/14Testing gas-turbine engines or jet-propulsion engines

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cyclones (AREA)

Abstract

The invention discloses a kind of injection uniformity detection of blade jet-type swirl device, primary structure includes and the base body of cyclone cooperation and the several Drainage pipes being connected.The device is assembled mainly for blade jet-type swirl device, base body and cyclone, and blade aperture respectively corresponds a wedge inclined-plane fuel feed hole on base body, guarantees that injection fluid fully enters in base body.In addition, base body lower outside is provided with oil outlet, channel is connected with fuel feed hole.Drainage pipe is inserted into oil outlet, and fluid flows into fuel feed hole after blade sprays, by corresponding oil outlet outflow.The volume or quality that fluid is flowed out by each Drainage pipe in measurement same time, judge the uniformity of swirler blades injection.The present invention provides reliable solution for the injection uniformity of blade jet-type swirl device, it can spray uniformity with efficient detection, judge whether blade spray orifice blocks, guarantee the normal safe operation of cyclone.

Description

A kind of injection uniformity detection of blade jet-type swirl device
Technical field
The present invention relates to the technical field of gas-turbine combustion chamber head cyclone, refer specifically to revolve for a kind of blade injecting type Flow the injection uniformity detection of device.
Background technique
Swirl flow combustion is a kind of effective means of overheavy firing, and cyclone is the important device for realizing swirl flow combustion.Eddy flow The performance of device directly affects the working performance of combustion chamber.
Swirl combustion chamber has the advantages that compact-sized, combustion stability is good, high combustion efficiency and pollutant discharge amount are low etc., As one of swirl combustion chamber main component, the main function of cyclone is: (1) high speed rotation jet stream is generated, low-pressure area is formed, To generate recirculating zone, high-temperature fuel gas is made to flow back, stablizes flame;(2) relative velocity for increasing air-flow and oil droplet, improves fuel oil Atomization, enables air and fuel oil preferably to blend;(3) flame on duty that stability and high efficiency is formed in recirculating zone is lighted subsequent mixed Gas is closed, efficiency of combustion, overheavy firing are improved.
Meanwhile in conjunction with the development trend of modern combustion with reduced pollutants, head of combustion chamber cyclone uses the side of blade injection Formula reduces NO so that air-fuel mixture is more uniformXDischarge.
In conclusion being directed to above-mentioned blade jet-type swirl device structure, the uniformity of injection is to measure cyclone performance How one of important indicator fast and accurately judges that swirler blades injection uniformity is innovation of the invention.In this regard, this Invention devises the base body and several Drainage pipes with cyclone cooperation, and the basic principle of detection scheme is according to same time The volume or quality for flowing out fluid in each Drainage pipe are inside measured, judges whether uniform, blade spray orifice is for cyclone injection Whether no blocking, evaluation cyclone reach normal operating conditions, guarantee the normal safe operation of cyclone.
Summary of the invention
The technical problem to be solved by the present invention is being directed to blade jet-type swirl device, a kind of injection uniformity is provided Detection device, apparatus structure include the base body and several Drainage pipes with cyclone cooperation.By every in measurement same time The volume or quality of a Drainage pipe outflow fluid, efficiently and accurately judge whether swirler blades injection is uniform.
The technical solution adopted by the present invention to solve the technical problems are as follows: a kind of injection of blade jet-type swirl device is uniform Property detection device, detection device include with cyclone cooperation base body and several Drainage pipes, blade jet-type swirl device, support Body and Drainage pipe three assembly are an entirety, wherein blade jet-type swirl device is made of blade and wheel hub, each blade Pore structure is opened up, sprays fluid for normal direction, the wedge and lower annular cylinder that base body is circumferentially evenly arranged by top form, Each wedge inclined-plane is provided with fuel feed hole, and the external side of lower post is corresponding to be provided with identical quantity oil outlet, blade jet-type swirl device by Base body is inserted at center, and the two is coaxially arranged, and wedge inner wall fits with hub outer wall, and wedge inclined-plane fits with blade, so that Without sliding, guarantee fluid all flows into fuel feed hole after being sprayed by blade for blade jet-type swirl device and the mutual clamping of base body, by Corresponding oil outlet outflow, avoids revealing, and Drainage pipe is mounted in oil outlet, for the volume or matter of measurement outflow fluid Amount.
Wherein, the base body and Drainage pipe material are aluminium, stainless steel or plastics, and processing technology is machining, casting Cause type or 3D printing.
Wherein, the blade, number are 6-40, and angle is 15 ° -75 °, vane thickness 0.8-5mm, and swirling number is 0.5-2.5;Spray orifice, diameter 0.2-4mm are provided on each blade, total flow number is 40-280kg/ (hr*Mpa^0.5), injection Fluid can sufficiently be blended with air, reduce pollutant discharge amount.
Wherein, the lower annular cylinder, outside diameter 64-70mm, inside diameter 40-46mm, inside diameter are omited Greater than hub outside diameter, so that blade jet-type swirl device is inserted by center;The high 42-45mm of cylinder;The external side of lower post is provided with out Oilhole, the corresponding oil outlet of each wedge, fuel-displaced hole count are identical as detected swirler blades quantity;Fuel-displaced bore dia is 4- 5mm, hole depth 2-3mm;For the volume or quality convenient for measuring fluid, fuel-displaced centerline hole tilts down 15 ° -20 °.
Wherein, the wedge, is circumferentially evenly arranged, and number is identical as detected swirler blades quantity, the angle of chamfer It spends identical as blade angle;Wedge inclined-plane is provided with fuel feed hole, diameter 4-6mm, hole depth 20-30mm;It is separately opened in fuel feed hole bottom Pore structure, diameter 3-4mm, the intercommunicating pore and oil outlet are coaxially arranged, to be connected to fuel feed hole and oil outlet;Wedge height is 9-12mm, the gap section between two wedges is 0.8-5mm, identical as vane thickness.
Wherein, the Drainage pipe, a length of 70-150mm, inside diameter 3-4mm, outside diameter 3.5-5mm, slightly Less than fuel-displaced bore dia;Drainage pipe is inserted into oil outlet, is fixed with base body, and the fluid of swirler blades spray orifice injection is by corresponding to Drainage pipe outflow;Drainage pipe end is bent downwardly 45 ° -60 °, to measure the volume or matter of each pipeline outflow fluid Amount.
The principle of the present invention is as follows: to reduce pollutant emission, head of combustion chamber uses blade jet-type swirl device.Rotation After flowing device insertion base body, wedge inner wall fits with cyclone hub outer wall, while wedge inclined-plane fits with blade, to protect Cyclone and the mutual clamping of base body are demonstrate,proved without sliding.Drainage pipe is fixed in oil outlet, cyclone, base body and Drainage pipe It is assembled to form an entirety.
Fluid all flows into fuel feed hole after vane hole ejection, and fuel feed hole and oil outlet are corresponded and be interconnected.Row Liquid pipe road is inserted into oil outlet, and fluid is finally by corresponding Drainage pipe outflow.Pass through each Drainage pipe in measurement same time The volume or quality for flowing out fluid, judge the injection uniformity of the cyclone.Cyclone, base body and Drainage pipe mutually fill With can guarantee to obtain accurate measurement data in the case where not revealing, detection process is rapidly and efficiently.
The present invention has the advantage that compared with prior art:
(1) package unit structure is simple, easy to process, and cost is relatively low.Mainly include with cyclone cooperation base body and Several Drainage pipes.Device material includes but is not limited to aluminium, stainless steel, plastics etc., and processing technology includes but is not limited to that machine adds Work, casting and forming and 3D printing, cover a wide range.
(2) cyclone injection fluid includes but is not limited to aviation kerosine etc., the detection suitable for multiple fluid.Wherein, it arranges Liquid pipe road is also reusable in the cyclone uniformity detection of other structure changes parameters.
(3) detection scheme of the present invention is easy to implement, is easily assembled between cyclone, base body and Drainage pipe. Whether uniform by comparing the volume or the injection of quality visual evaluation cyclone of each Drainage pipe outflow fluid, process is quick Efficiently.
(4) cooperation of cyclone, base body and Drainage pipe can guarantee that device obtains accurate number in the case where not revealing According to testing result is reliable.
Detailed description of the invention
Fig. 1 is the structure sectional view after base body of the present invention, Drainage pipe assembly;
Fig. 2 is base body structural schematic diagram of the present invention.Wherein, Fig. 2 (a) is trimetric drawing, and Fig. 2 (b) is main view Figure, Fig. 2 (c) are cross-sectional view;
Fig. 3 is cyclone of the present invention, base body assembling schematic diagram.Wherein, the top Fig. 3 (a) is the rotation of blade injecting type The main view of device is flowed, lower part is the main view of base body, and arrow indicates that assembly direction, Fig. 3 (b) are the main view after assembly, Fig. 3 It (c) is the cross-sectional view after assembly;
Fig. 4 is cyclone, base body and Drainage pipe assembling schematic diagram of the present invention.It wherein, is leaf on the left of Fig. 4 (a) The main view of piece jet-type swirl device, right side are the main view of detection device, and arrow indicates that assembly direction, Fig. 4 (b) are after assembling Main view, Fig. 4 (c) be assembly after trimetric drawing;
Wherein, appended drawing reference meaning are as follows: 1 is blade jet-type swirl device, and 2 be the base body cooperated with cyclone, and 3 be drain Pipeline, 4 be swirler blades, and 5 be cyclone wheel hub, and 6 be blade spray orifice, and 7 be base body top wedge, and 8 be base body lower annular Cylinder, 9 be fuel feed hole, and 10 be oil outlet, and 11 be intercommunicating pore, is connected to fuel feed hole and oil outlet, and 12 be the gap section between wedge.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention:
As shown in Figure 1, detection device includes the base body 2 and Drainage pipe 3 with cyclone cooperation.After fluid is sprayed by blade Fuel feed hole 9 is all flowed into, through oil outlet 10, is flowed out by corresponding Drainage pipe 3.Fuel feed hole 9 is greater than blade spray orifice 6, to avoid Data deviation caused by fluid leakage.
As shown in Figure 1, Drainage pipe 3 a length of 70-150mm, inside diameter 3-4mm, outside diameter 3.5-5mm, slightly Less than 10 diameter of oil outlet.Drainage pipe 3 is inserted into oil outlet 10, passes through the base body of two liquid mixed hardening glue and cyclone cooperation 2 is fixed, and the fluid that swirler blades 4 are sprayed finally is flowed out by corresponding Drainage pipe 3.3 end of Drainage pipe be bent downwardly 45 °- 60 °, to measure the volume or quality of each pipeline outflow fluid.Drainage pipe material is aluminium, stainless steel or plastics, is added Work technique is machining, casting and forming or 3D printing.
As shown in Fig. 2, the base body lower annular cylinder 8 with cyclone cooperation, outside diameter 64-70mm, inside diameter 40- 46mm is slightly larger than 5 outer diameter of cyclone wheel hub, so that blade jet-type swirl device 1 is inserted by center.Cyclic annular cylinder 8 is 42- high 45mm, the external side of lower post are provided with oil outlet 10, and the corresponding oil outlet 10 of a base body top wedge 7.Oil outlet 10 is straight Diameter is 4-5mm, hole depth 2-3mm.For the volume or quality convenient for measurement outflow fluid, the center line of oil outlet 10 is tilted down 15°-20°。
As shown in Fig. 2, base body top wedge 7, is circumferentially evenly arranged, wedge number and detected 4 quantity of swirler blades Identical, bevel angle is identical as 4 angle of swirler blades.Wedge inclined-plane is provided with fuel feed hole 9, diameter 4-6mm, hole depth 20- 30mm.Intercommunicating pore 11 is separately opened in 9 bottom of fuel feed hole, diameter 3-4mm, the intercommunicating pore 11 and oil outlet 10 are coaxially arranged, thus It is connected to fuel feed hole 9 and oil outlet 10.Wedge 7 height in base body top is 9-12mm, and the gap section 12 between two wedges is 0.8- 5mm is identical as 4 thickness of swirler blades.Base body material is aluminium, stainless steel or plastics, and processing technology is machining, is cast as Type or 3D printing.
As shown in figure 3, swirler blades 4, the number of blade is 6-40, and angle is 15 ° -75 °, vane thickness 0.8-5mm, Swirling number is 0.5-2.5.Blade spray orifice 6, diameter 0.2-4mm are provided on each blade, total flow number is 40-280kg/ (hr* Mpa^0.5), mixing effect can be improved, reduce pollutant emission.
As shown in figure 4, blade jet-type swirl device 1 from center insertion with cyclone with base body 2 after, the coaxial cloth of the two It sets, 7 inner wall of wedge fits with 5 outer wall of wheel hub, while wedge 7 inclined-plane in base body top fits with swirler blades 4, guarantees leaf The mutual clamping of base body 2 of piece jet-type swirl device 1 and cyclone cooperation is without sliding.Blade jet-type swirl device 1, cyclone are matched The base body 2 and Drainage pipe 3 of conjunction are assembled to form an entirety.Fluid is after the ejection of swirler blades 4, through fuel feed hole 9 and fuel-displaced Hole 10 is finally flowed out by corresponding Drainage pipe 3.By each Drainage pipe in measurement same time flow out fluid volume or Quality judges whether uniform, blade spray orifice blocks for cyclone injection, and whether evaluation cyclone reaches normal operating conditions.

Claims (6)

1. a kind of injection uniformity detection of blade jet-type swirl device, it is characterised in that: detection device includes and eddy flow The base body (2) and several Drainage pipes (3) of device cooperation, blade jet-type swirl device (1), the base body (2) with cyclone cooperation It is an entirety with Drainage pipe (3) three assembly, wherein blade jet-type swirl device (1) is by swirler blades (4) and eddy flow Device wheel hub (5) composition, each blade open up blade spray orifice (6), spray fluid for normal direction, the base body (2) with cyclone cooperation The base body top wedge (7) and lower annular cylinder (8) being circumferentially evenly arranged by top form, each wedge inclined-plane be provided with into Oilhole (9), the external side correspondence of lower post are provided with identical quantity oil outlet (10), and blade jet-type swirl device (1) is inserted by center With the base body (2) of cyclone cooperation, the two is coaxially arranged, and base body top wedge (7) inner wall is affixed with cyclone wheel hub (5) outer wall It closes, base body top wedge (7) inclined-plane fits with swirler blades (4), so that blade jet-type swirl device (1) and and cyclone The mutually clamping of the base body (2) of cooperation guarantees all to flow into fuel feed hole (9) after fluid is sprayed by blade, by corresponding to without sliding Oilhole (10) outflow, avoids revealing, and Drainage pipe (3) is mounted in oil outlet (10), for the volume of measurement outflow fluid Or quality.
2. a kind of injection uniformity detection of blade jet-type swirl device according to claim 1, it is characterised in that: Described base body (2) and Drainage pipe (3) material with cyclone cooperation is aluminium, stainless steel or plastics, and processing technology is machine Processing, casting and forming or 3D printing.
3. a kind of injection uniformity detection scheme of blade jet-type swirl device according to claim 1, it is characterised in that: The swirler blades (4), number are 6-40, and angle is 15 ° -75 °, vane thickness 0.8-5mm, swirling number 0.5- 2.5;It being provided on each blade blade spray orifice (6), diameter 0.2-4mm, total flow number is 40-280kg/ (hr*Mpa^0.5), Injection fluid can sufficiently be blended with air, reduce pollutant discharge amount.
4. a kind of injection uniformity detection of blade jet-type swirl device according to claim 1, it is characterised in that: The lower annular cylinder (8), outside diameter 64-70mm, inside diameter 40-46mm, inside diameter are slightly larger than cyclone Wheel hub (5) outer diameter, so that blade jet-type swirl device (1) is inserted by center;The high 42-45mm of cyclic annular cylinder (8);Lower post is external Side is provided with oil outlet (10), the corresponding oil outlet of each base body top wedge (7), fuel-displaced hole count and detected swirler blades (4) quantity is identical;Oil outlet (10) diameter is 4-5mm, hole depth 2-3mm;It is fuel-displaced for the volume or quality convenient for measuring fluid Hole (10) center line tilts down 15 ° -20 °.
5. a kind of injection uniformity detection of blade jet-type swirl device according to claim 1, it is characterised in that: The base body top wedge (7), is circumferentially evenly arranged, number is identical as detected swirler blades (4) quantity, the angle of chamfer It spends identical as swirler blades (4) angle;Base body top wedge (7) inclined-plane is provided with fuel feed hole (9), diameter 4-6mm, hole depth 20-30mm;It is separately opened intercommunicating pore (11) in fuel feed hole (9) bottom, diameter 3-4mm, the intercommunicating pore (11) and oil outlet (10) are same Axis arrangement, to be connected to fuel feed hole (9) and oil outlet (10);Base body top wedge (7) is highly 9-12mm, between two wedges Gap section (12) be 0.8-5mm, it is identical as swirler blades (4) thickness.
6. a kind of injection uniformity detection of blade jet-type swirl device according to claim 1, it is characterised in that: The Drainage pipe (3), a length of 70-150mm, inside diameter 3-4mm, outside diameter 3.5-5mm are slightly less than oil outlet (10) diameter;Drainage pipe (3) is inserted into oil outlet (10), fixed with the base body (2) of cyclone cooperation, swirler blades spray orifice (6) fluid sprayed is by corresponding to Drainage pipe (3) outflow;Drainage pipe (3) end is bent downwardly 45 ° -60 °, each to measure The volume or quality of pipeline outflow fluid.
CN201810746389.2A 2018-07-09 2018-07-09 Spraying uniformity detection device of blade spraying type swirler Active CN109187039B (en)

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