CN103017999B - Flow field characteristic experiment device of combustion chamber of hydrogen-burning gas turbine - Google Patents
Flow field characteristic experiment device of combustion chamber of hydrogen-burning gas turbine Download PDFInfo
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- CN103017999B CN103017999B CN201210524960.9A CN201210524960A CN103017999B CN 103017999 B CN103017999 B CN 103017999B CN 201210524960 A CN201210524960 A CN 201210524960A CN 103017999 B CN103017999 B CN 103017999B
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Abstract
The invention discloses a flow field characteristic experiment device of a combustion chamber of a hydrogen-burning gas turbine. The flow field characteristic experiment device comprises three pairs of bluff body arrangement combustion chamber experiment pieces, a particle image velocimetry (PIV) test platform frame, a PIV test system and a pressure difference and environment temperature test system. The three pairs of bluff body arrangement combustion chamber experiment pieces comprise a front lateral plate, a front bluff body, a back bluff body, an affiliation mechanism of the back bluff body, a front top plate and a back top plate. A tracer particle injection pipe jack is arranged on the front lateral plate, an inlet speed probe jack is arranged on the front top plate, and an outlet speed probe jack is arranged on the back top plate. A tracer particle generator is connected with the tracer particle injection pipe jack on the front lateral plate. The device adopts the PIV test technology, selects reasonable combustion chamber position, reasonably mingles tracer particles into a main gas flow under the effects of the tracer particle generator and a tracer particle injection pipe, enables tracking particles in the test area to be evenly distributed and conducts visualization experiment of cold state flowing speed vector distribution of three pairs of bluff arrangement combustion chambers.
Description
Technical field
The present invention relates to a kind of combustion hydrogen gas turbine experimental provision, particularly a kind of combustion hydrogen gas turbine supersonic combustor characteristic experimental apparatus.
Background technology
Exploitation, promotion and application integrated gasification combined cycle for power generation (Integrated GasificationCombined Cycle is called for short IGCC) technology, can realize the sustainable development coal fired power generation of near-zero release.At present, the developed countries such as the U.S., Germany, Britain and Japan all drop into huge fund and carry out researching and developing and demonstrating IGCC technology, and the process system involved by IGCC technology and gordian technique have become the focus of international energy area research exploitation all.Comprehensive and intensive research is carried out to using hydrogen-rich synthetic gas and pure hydrogen gas gas-turbine combustion chamber Structure and Properties and mating with modern gas turbines, for tachnical storage and engineering mimoir are done in China's power industry " green coal-fired power ", significant to the national economy and social development of China.
At present, IGCC gas turbine carries out transforming the technological difficulties run into and is on modern times advanced gas turbine design scheme basis: the laminar flame speed of hydrogen air potpourri is very high; The relatively high adiabatic temperature of hydrogen air potpourri, burning produces a large amount of oxides of nitrogen; If flame temperature and nitrogen oxide emission reduce by nitrogen or Steam dilution, burning efficiency can be reduced; If adopt poor fuel premixed, rapid reaction and high burning rate can cause spontaneous combustion and tempering.For these technological difficulties, people have developed and have used hydrogen-rich synthetic gas and pure hydrogen gas new ideas gas-turbine combustion chamber technology, significant to applying of IGCC.
Develop and use hydrogen-rich synthetic gas and pure hydrogen gas gas-turbine combustion chamber, under operating condition, carry out new concept combustion room experimental study, research cycle is long, and risk is high, and funds consume huge.Conventional gas-turbine combustion chamber flow characteristics experimental study, adopt five-hole probe or seven-hole probe measuring speed field, the spatial coordinate location of measuring point is determined inaccurate, if chamber structure is complicated, probe also can the velocity distribution of havoc measuring point, not only can not reflect the real velocity distribution in firing chamber exactly, and Experiment Data Records and process loaded down with trivial details.Although part adopts Particle Image Velocity (Particle Image Velocimetry at present, being called for short PIV) method of testing carries out Combustor Flows characteristic test research, in experimentation, trace particle test zone skewness, followability are poor, also directly can affect measurement result.Particularly for different test condition, current PIV test macro debugging is not only consuming time, and can not draw desirable test result under some operating mode.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention will design one not damage test zone velocity field, trace particle test zone is evenly distributed, it is flexible to debug, accurately can reflect test zone velocity distribution, data record and process convenient PIV visual testing technology, can simulate combustion hydrogen gas turbine chamber structure form that the three pairs of bluff bodies arrange and flox condition, and the combustion hydrogen gas turbine supersonic combustor characteristic can arranged for three pairs of bluff bodies carry out the experimental provision of experimental study.
To achieve these goals, technical scheme of the present invention is as follows: a kind of combustion hydrogen gas turbine supersonic combustor characteristic experimental apparatus, comprises three pairs of bluff bodies and arrange firing chamber experimental piece, PIV testboard bay, PIV test macro and pressure reduction and environment temperature test macro;
Three pairs of described bluff bodies arrange firing chamber experimental piece, comprise front side board, back side panel, base plate, front bluff body, rear bluff body and cum rights, front top plate, dumb light glass, top surface of the glass plate, side glass plate, rear top board, inlet flange and exhaust flange; Described base plate has base plate glass wedged groove, rear bluff body moves conduit, front bluff body caulking groove and pore, and be furnished with spiro rod support; Described front top plate and rear top board all have top board glass wedged groove; Described front side board has two pieces, its lower limb is connected with the left and right sides of base plate respectively, coboundary is connected with the left and right sides of front top plate respectively; Described back side panel has two pieces, its lower limb is connected with the left and right sides of base plate respectively, coboundary is connected with the left and right sides of rear top board respectively; The dumb light glass plate arranged in described front side board, back side panel, base plate, base plate glass wedged groove and top board glass wedged groove, top surface of the glass plate and side glass plate form the mainstream channel that three pairs of bluff bodies arrange firing chamber experimental piece; Front side board has trace particle playpipe jack; Front top plate has inlet velocity probe receptacle, and rear top board has velocity of discharge probe receptacle;
Described base plate contains pore, for the gas injection experiment of rear bluff body;
Described front bluff body is embedded in the front bluff body caulking groove in base plate, is moved with air-flow to prevent front bluff body, described rear bluff body and cum rights thereof comprise rear bluff body, screw rod, rear bluff body bearing and rear bluff body supporting bearing, rear bluff body bearing has bottom outlet, screw rod is connected with rear bluff body bearing, rear bluff body bearing penetrates screw by bottom outlet and is connected with rear bluff body, screw rod is fixed on spiro rod support, rear bluff body rest base is furnished with rear bluff body supporting bearing, after rear bluff body supporting bearing is embedded into base plate, bluff body moves in conduit, screw rod can rotate in spiro rod support, after driving, along three pairs of bluff bodies, bluff body bearing arranges that firing chamber experimental piece moves axially together with rear bluff body, in order to regulate the spacing between rear bluff body and front bluff body,
With three pairs of bluff bodies, described inlet flange arranges that the front portion of firing chamber experimental piece is connected, with three pairs of bluff bodies, exhaust flange arranges that the rear portion of firing chamber experimental piece is connected;
Described PIV testboard bay comprises iron table, main support and adjustable support, and described adjustable support comprises top angle steel, steel bar with holes and PIV camera lens and hangs steel bar; Adjustable support and main support are by top Bolted angle connection, and main support is connected with iron table by bolt; Described PIV camera lens is hung on steel bar and is connected with PIV camera lens by screw; The hole of steel bar with holes penetrates bolt and hangs steel bar with PIV camera lens and be connected; Steel bar with holes by through bolt and top Bolted angle connection, the screw of angle steel both sides, top by penetrate be bolted to main support main support slideway on;
Described PIV test macro comprises air compressor, gas bomb, gas purification bottle, trace displaying particle generator, laser generator, light-conducting arm, Laser emission camera lens, PIV camera lens, synchronizer and desktop computer a, described air compressor is connected by flexible pipe with gas bomb, gas bomb is connected by flexible pipe with gas purification bottle, and gas purification bottle is connected by flexible pipe with trace displaying particle generator; With three pairs of bluff bodies, described trace displaying particle generator arranges that firing chamber experimental piece is connected by trace particle playpipe; Described laser generator is connected with synchronizer by signal wire, and described PIV camera lens is connected with synchronizer by signal wire, and described synchronizer is connected with desktop computer a by signal wire; Described laser generator is connected with light-conducting arm, and light-conducting arm is connected with Laser emission camera lens;
Described trace displaying particle generator is connected with trace particle playpipe flexible pipe, and trace particle playpipe is connected with the trace particle playpipe jack on front side board, discharges trace particle for arranging in the experimental piece of firing chamber to three pairs of bluff bodies;
Described pressure reduction and environment temperature test macro, comprise direct supply, data collecting instrument, differential pressure pickup a, differential pressure pickup b, differential pressure pickup c, differential pressure pickup d, thermopair, inlet velocity probe (52), velocity of discharge probe and desktop computer b; Described direct supply is connected with data collecting instrument by electric wire, and described inlet velocity probe (52) is connected with differential pressure pickup a and differential pressure pickup c respectively by flexible rubber hose; Described velocity of discharge probe is connected with differential pressure pickup b and differential pressure pickup d respectively by flexible rubber hose, is also connected with differential pressure pickup c simultaneously; Described thermopair is placed in environment, and described differential pressure pickup a, differential pressure pickup b, differential pressure pickup c, differential pressure pickup d are all connected with data collecting instrument by signal wire with thermopair; Data collecting instrument is connected by signal wire with desktop computer b.
The course of work of the present invention is as follows:
Gas flows into three pairs of bluff bodies by inlet flange and arranges firing chamber experimental piece, and trace particle playpipe is at front side board trace particle playpipe jack position release trace particle.The jeting effect that the formation of trace particle playpipe is fabulous, air-flow is by front side board, equably blending trace particle.Blending has the gas of trace particle, flows through front bluff body and rear bluff body, forms Observable velocity distribution region at firing chamber test zone.Then, air-flow is discharged in the middle of air by exhaust flange.
Desktop computer controls laser generator and PIV camera lens by synchronizer, controls laser generator laser occurrence frequency, frequency taken pictures by laser generation intensity, PIV camera lens and laser generator laser occurs and PIV camera lens is taken pictures simultaneously match.The laser that laser generator is launched, via laser guide arm, projects the appointed area in three pairs of bluff bodies layout firing chamber experimental pieces by Laser emission camera lens.Air compressor by compressed air delivery to gas bomb, pressure-air through gas bomb gas coming through purification bottle to trace displaying particle generator, trace particle is discharged by trace displaying particle generator, enters the three pairs of bluff bodies arrange the flow field that firing chamber experimental pieces and primary air produce trace particle and be evenly distributed by trace particle playpipe.The velocity field trace particle of PIV lens shooting scattering laser, after pictures taken being imported into computer a, arranges firing chamber experimental piece inner region velocity distribution situation through software computing display test three pairs of bluff bodies.
Inlet velocity probe (52) arranges firing chamber experimental piece inlet velocity for measuring three pairs of bluff bodies, velocity of discharge probe arranges firing chamber experimental piece exit velocity for measuring three pairs of bluff bodies, computer by data acquisition software, gathers and record data such as the pressure reduction of data collecting instrument and temperature.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention adopts PIV measuring technology, selected rational position, firing chamber, under trace displaying particle generator and the effect of trace particle playpipe, reasonably by trace particle blending in primary air, test zone trace particle is evenly distributed, when breakdown speed does not distribute, carry out three pairs of bluff bodies and arrange the research of Cold Flow in Combustor velocities distribution visualized experiments.
2, in PIV testboard bay of the present invention, be provided with adjustable support, the adjustment of height between PIV camera lens and test block and test zone can be carried out, effectively can reduce the debug time of PIV test macro.Test data is imported in computer by PIV test macro, and application data handling procedure carries out recording and processing, and can record easily and process test result, can reflect that velocity distribution is got in test exactly.
3, the present invention has the hole of steel bar with holes to penetrate bolt to hang steel bar with PIV camera lens and be connected, and what the hole penetrating differing heights by bolt regulated PIV camera adjusting to hang steel bar hanging height.Steel bar with holes is by bolt and top Bolted angle connection.Fixed belt hole steel bar by through bolt and top Bolted angle connection, the screw of angle steel both sides, top penetrates and is bolted on the main support slideway of main support, and top angle steel can move along main support slideway, for adjusting PIV lens location.PIV test macro is debugged flexible.
4, rear bluff body bearing of the present invention penetrates screw by bottom outlet and is connected with rear bluff body, can replace the rear bluff body of different structure form.Screw rod can rotate in spiro rod support, in order to regulate the spacing between rear bluff body and front bluff body.Bluff body and front and back bluff body distance after different geometries, form the chamber structure form that different bluff body is arranged.Under the curved cavity condition that different front and back bluff body is formed, circulation airflow can produce different flox condition.Combustion hydrogen gas turbine chamber structure form and the flox condition of three pairs of bluff bodies layouts can be simulated.
5, the present invention is directed to IGCC gas turbine to carry out transforming the technological difficulties run on modern times advanced gas turbine design scheme basis, form the new concept combustion room model structural form that different bluff body is arranged, experimental study is carried out to it, to show that experimental result and flowing law are used for combustion engine structural design theory basis, shorten the R&D cycle of firing chamber, reduce research cost.
Accompanying drawing explanation
The present invention has 10, accompanying drawing, wherein:
Fig. 1 is composition schematic diagram of the present invention.
(wherein: dotted line is high-pressure air pipe, thick line is data line; Straight line is import static pressure, and thick straight line is import stagnation pressure, and straight dotted line is exit static pressure, and thick dashed line is outlet stagnation pressure; Black thick straight line is data line)
Fig. 2 is that three pairs of bluff bodies arrange firing chamber experimental piece schematic diagram.
Fig. 3 is base plate vertical view.
Fig. 4 is base plate left view.
Fig. 5 is rear bluff body and cum rights's vertical view thereof.
Fig. 6 is rear bluff body and cum rights's upward view thereof.
Fig. 7 is PIV testboard bay schematic diagram.
Fig. 8 is PIV testboard bay vertical view.
Fig. 9 is adjustable support schematic diagram.
Figure 10 is adjustable support vertical view.
In figure: 1, three pairs of bluff bodies arrange firing chamber experimental piece, 2, PIV testboard bay, 3, front side board, 4, back side panel, 5, base plate, 6, front bluff body, 7, rear bluff body and cum rights thereof, 8, front top plate, 9, dumb light glass plate, 10, rear top board, 11, inlet velocity probe receptacle, 12, velocity of discharge probe receptacle, 13, top board glass wedged groove, 14, trace particle playpipe jack, 15, base plate glass wedged groove, 16, rear bluff body moves conduit, and 17, front bluff body caulking groove, 18, spiro rod support, 19, pore, 20, trace particle playpipe, 21, rear bluff body, 22, screw rod, 23, rear bluff body bearing, 24, bottom outlet, 25, rear bluff body supporting bearing, 26, iron table, 27, main support, 28, adjustable support, 29, main support slideway, 30, top angle steel, 31, steel bar with holes, 32, PIV camera lens hangs steel bar, and 33, PIV test macro, 34, air compressor, 35, gas bomb, 36, gas purification bottle, 37, trace displaying particle generator, 38, laser generator, 39, light-conducting arm, 40, Laser emission camera lens, 41, PIV camera lens, 42, synchronizer, 43, desktop computer a, 44, pressure reduction and environment temperature test macro, 45, direct supply, 46, data collecting instrument, 47, differential pressure pickup a, 48, differential pressure pickup b, 49, differential pressure pickup c, 50, differential pressure pickup d, 51, thermopair, 52, inlet velocity probe, 53, velocity of discharge probe, 54, desktop computer b, 55, inlet flange, 56, exhaust flange, 57, top surface of the glass plate, 58, side glass plate.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments, the invention will be further described.As Figure 1-10 shows, a kind of combustion hydrogen gas turbine supersonic combustor characteristic experimental apparatus, comprises three pairs of bluff bodies and arranges firing chamber experimental piece 1, PIV testboard bay 2, PIV test macro 33 and pressure reduction and environment temperature test macro 44;
Three pairs of described bluff bodies arrange firing chamber experimental piece 1, comprise front side board 3, back side panel 4, base plate 5, front bluff body 6, rear bluff body and cum rights 7, front top plate 8, dumb light glass, top surface of the glass plate 57, side glass plate 58, rear top board 10, inlet flange 55 and exhaust flange 56; Described base plate 5 has base plate glass wedged groove 15, rear bluff body moves conduit 16, front bluff body caulking groove 17 and pore 19, and be furnished with spiro rod support 18; Described front top plate 8 and rear top board 10 all have top board glass wedged groove 13; Described front side board 3 has two pieces, its lower limb is connected with the left and right sides of base plate 5 respectively, coboundary is connected with the left and right sides of front top plate 8 respectively; Described back side panel 4 has two pieces, its lower limb is connected with the left and right sides of base plate 5 respectively, coboundary is connected with the left and right sides of rear top board 10 respectively; The dumb light glass plate 9 arranged in described front side board 3, back side panel 4, base plate 5, base plate glass wedged groove 15 and top board glass wedged groove 13, top surface of the glass plate 57 and side glass plate 58 form the mainstream channel that three pairs of bluff bodies arrange firing chamber experimental piece 1; Front side board 3 has trace particle playpipe jack 14; Front top plate 8 has inlet velocity probe receptacle 11, and rear top board 10 has velocity of discharge probe receptacle 12;
Described base plate 5 contains pore 19, for the gas injection experiment of rear bluff body 21;
Described front bluff body 6 is embedded in the front bluff body caulking groove 17 in base plate 5, is moved with air-flow to prevent front bluff body 6, described rear bluff body and cum rights 7 thereof comprise rear bluff body 21, screw rod 22, rear bluff body bearing 23 and rear bluff body supporting bearing 25, rear bluff body bearing 23 has bottom outlet 24, screw rod 22 is connected with rear bluff body bearing 23, rear bluff body bearing 23 penetrates screw by bottom outlet 24 and is connected with rear bluff body 21, screw rod 22 is fixed on spiro rod support 18, rear bluff body supporting bearing 25 is furnished with bottom rear bluff body bearing 23, after rear bluff body supporting bearing 25 is embedded into base plate 5, bluff body moves in conduit 16, screw rod 22 can rotate in spiro rod support 18, after driving, along three pairs of bluff bodies, bluff body bearing 23 arranges that firing chamber experimental piece 1 moves axially together with rear bluff body 21, in order to regulate the spacing between rear bluff body 21 and front bluff body 6,
With three pairs of bluff bodies, described inlet flange 55 arranges that the front portion of firing chamber experimental piece 1 is connected, with three pairs of bluff bodies, exhaust flange 56 arranges that the rear portion of firing chamber experimental piece 1 is connected;
Described PIV testboard bay 2 comprises iron table 26, main support 27 and adjustable support 28, and described adjustable support 28 comprises top angle steel 30, steel bar with holes 31 and PIV camera lens and hangs steel bar 32; Adjustable support 28 is connected by top angle steel 30 with main support 27, and main support 27 is connected with iron table 26 by bolt; Described PIV camera lens is hung on steel bar 32 and is connected with PIV camera lens 41 by screw; The hole of steel bar 31 with holes penetrates bolt and hangs steel bar 32 with PIV camera lens and be connected; Steel bar with holes 31 by through bolt be connected with top angle steel 30, the screw of top angle steel 30 both sides by penetrate be bolted to main support 27 main support slideway 29 on;
Described PIV test macro 33 comprises air compressor 34, gas bomb 35, gas purification bottle 36, trace displaying particle generator 37, laser generator 38, light-conducting arm 39, Laser emission camera lens 40, PIV camera lens 41, synchronizer 42 and desktop computer a43, described air compressor 34 is connected by flexible pipe with gas bomb 35, gas bomb 35 is connected by flexible pipe with gas purification bottle 36, and gas purification bottle 36 is connected by flexible pipe with trace displaying particle generator 37; With three pairs of bluff bodies, described trace displaying particle generator 37 arranges that firing chamber experimental piece 1 is connected by trace particle playpipe 20; Described laser generator 38 is connected with synchronizer 42 by signal wire, and described PIV camera lens 41 is connected with synchronizer 42 by signal wire, and described synchronizer 42 is connected with desktop computer a43 by signal wire; Described laser generator 38 is connected with light-conducting arm 39, and light-conducting arm 39 is connected with Laser emission camera lens 40;
Described trace displaying particle generator 37 is connected with flexible pipe with trace particle playpipe 20, and trace particle playpipe 20 is connected with the trace particle playpipe jack 14 on front side board 3, discharges trace particle for arranging in firing chamber experimental piece 1 to three pairs of bluff bodies;
Described pressure reduction and environment temperature test macro 44, comprise direct supply 45, data collecting instrument 46, differential pressure pickup a47, differential pressure pickup b48, differential pressure pickup c49, differential pressure pickup d50, thermopair 51, inlet velocity probe 52, velocity of discharge probe 53 and desktop computer b54; Described direct supply 45 is connected with data collecting instrument 46 by electric wire, and described inlet velocity probe 52 is connected with differential pressure pickup a47 and differential pressure pickup c49 respectively by flexible rubber hose; Described velocity of discharge probe 53 is connected with differential pressure pickup b48 and differential pressure pickup d50 respectively by flexible rubber hose, is also connected with differential pressure pickup c49 simultaneously; Described thermopair 51 is placed in environment, and described differential pressure pickup a47, differential pressure pickup b48, differential pressure pickup c49, differential pressure pickup d50 are all connected with data collecting instrument 46 by signal wire with thermopair 51; Data collecting instrument 46 is connected by signal wire with desktop computer b54.
The course of work of the present invention is as follows:
Gas flows into three pairs of bluff bodies by inlet flange 55 and arranges firing chamber experimental piece 1, and trace particle playpipe 20 is at front side board 3 trace particle playpipe jack 14 position release trace particle.The jeting effect that the formation of trace particle playpipe 20 is fabulous, air-flow is by front side board 3, equably blending trace particle.Blending has the gas of trace particle, flows through front bluff body 6 and rear bluff body 21, forms Observable velocity distribution region at firing chamber test zone.Then, air-flow is discharged in the middle of air by exhaust flange 56.
Desktop computer controls laser generator 38 and PIV camera lens 41 by synchronizer 42, controls laser generator 38 laser occurrence frequency, frequency taken pictures by laser generation intensity, PIV camera lens 41 and laser generator 38 laser occurs and PIV camera lens 41 is taken pictures simultaneously match.The laser that laser generator 38 is launched, via laser guide arm 39, projects the appointed area in three pairs of bluff bodies layout firing chamber experimental pieces 1 by Laser emission camera lens 40.Air compressor 34 by compressed air delivery to gas bomb 35, pressure-air is through gas bomb 35 gas coming through purification bottle 36 to trace displaying particle generator 37, trace particle is discharged by trace displaying particle generator 37, enters the three pairs of bluff bodies arrange the flow field that firing chamber experimental pieces 1 and primary air produce trace particle and be evenly distributed by trace particle playpipe 20.The velocity field trace particle of scattering laser taken by PIV camera lens 41, after pictures taken being imported into computer a, arranges firing chamber experimental piece 1 inner region velocity distribution situation through software computing display test three pairs of bluff bodies.
Inlet velocity probe 52 arranges firing chamber experimental piece 1 inlet velocity for measuring three pairs of bluff bodies, velocity of discharge probe 53 arranges firing chamber experimental piece 1 exit velocity for measuring three pairs of bluff bodies, computer by data acquisition software, gathers and record data such as the pressure reduction of data collecting instrument 46 and temperature.
Claims (1)
1. fire a hydrogen gas turbine supersonic combustor characteristic experimental apparatus, it is characterized in that: comprise three pairs of bluff bodies and arrange firing chamber experimental piece (1), PIV testboard bay (2), PIV test macro (33) and pressure reduction and environment temperature test macro (44);
Three pairs of described bluff bodies arrange firing chamber experimental piece (1), comprise front side board (3), back side panel (4), base plate (5), front bluff body (6), rear bluff body and cum rights (7), front top plate (8), dumb light glass plate (9), top surface of the glass plate (57), side glass plate (58), rear top board (10), inlet flange (55) and exhaust flange (56); Described base plate (5) has base plate glass wedged groove (15), rear bluff body moves conduit (16), front bluff body caulking groove (17) and pore (19), and be furnished with spiro rod support (18); Described front top plate (8) and rear top board (10) all have top board glass wedged groove (13); Described front side board (3) has two pieces, its lower limb is connected with the left and right sides of base plate (5) respectively, coboundary is connected with the left and right sides of front top plate (8) respectively; Described back side panel (4) has two pieces, its lower limb is connected with the left and right sides of base plate (5) respectively, coboundary is connected with the left and right sides of rear top board (10) respectively; The dumb light glass plate (9) arranged in described front side board (3), back side panel (4), base plate (5), base plate glass wedged groove (15) and top board glass wedged groove (13), top surface of the glass plate (57) and side glass plate (58) form the mainstream channel that three pairs of bluff bodies arrange firing chamber experimental piece (1); Front side board (3) has trace particle playpipe jack (14); Front top plate (8) has inlet velocity probe receptacle (11), and rear top board (10) has velocity of discharge probe receptacle (12);
Described base plate (5) containing pore (19), for the gas injection experiment of rear bluff body (21);
Described front bluff body (6) is embedded in the front bluff body caulking groove (17) in base plate (5), is moved with air-flow to prevent front bluff body (6), described rear bluff body and cum rights (7) thereof comprise rear bluff body (21), screw rod (22), rear bluff body bearing (23) and rear bluff body supporting bearing (25), rear bluff body bearing (23) has bottom outlet (24), screw rod (22) is connected with rear bluff body bearing (23), rear bluff body bearing (23) penetrates screw by bottom outlet (24) and is connected with rear bluff body (21), screw rod (22) is fixed on spiro rod support (18), rear bluff body bearing (23) bottom is furnished with rear bluff body supporting bearing (25), rear bluff body supporting bearing (25) be embedded into base plate (5) afterwards bluff body move in conduit (16), screw rod (22) can rotate in spiro rod support (18), after driving, along three pairs of bluff bodies, bluff body bearing (23) arranges that firing chamber experimental piece (1) moves axially together with rear bluff body (21), in order to regulate the spacing between rear bluff body (21) and front bluff body (6),
Described inlet flange (55) and three pairs of bluff bodies arrange that the front portion of firing chamber experimental piece (1) is connected, and exhaust flange (56) and three pairs of bluff bodies arrange that the rear portion of firing chamber experimental piece (1) is connected;
Described PIV testboard bay (2) comprises iron table (26), main support (27) and adjustable support (28), and described adjustable support (28) comprises top angle steel (30), steel bar with holes (31) and PIV camera lens and hangs steel bar (32); Adjustable support (28) is connected by top angle steel (30) with main support (27), and main support (27) is connected with iron table (26) by bolt; Described PIV camera lens is hung on steel bar (32) and is connected with PIV camera lens (41) by screw; The hole of steel bar with holes (31) penetrates bolt and hangs steel bar (32) with PIV camera lens and be connected; Steel bar with holes (31) by through bolt be connected with top angle steel (30), the screw of top angle steel (30) both sides by penetrate be bolted to main support (27) main support slideway (29) on;
Described PIV test macro (33) comprises air compressor (34), gas bomb (35), gas purification bottle (36), trace displaying particle generator (37), laser generator (38), light-conducting arm (39), Laser emission camera lens (40), PIV camera lens (41), synchronizer (42) and desktop computer a (43), described air compressor (34) is connected by flexible pipe with gas bomb (35), gas bomb (35) is connected by flexible pipe with gas purification bottle (36), gas purification bottle (36) is connected by flexible pipe with trace displaying particle generator (37), by trace particle playpipe (20) and three pairs of bluff bodies, described trace displaying particle generator (37) arranges that firing chamber experimental piece (1) is connected, described laser generator (38) is connected with synchronizer (42) by signal wire, described PIV camera lens (41) is connected with synchronizer (42) by signal wire, and described synchronizer (42) is connected with desktop computer a (43) by signal wire, described laser generator (38) is connected with light-conducting arm (39), and light-conducting arm (39) is connected with Laser emission camera lens (40),
Described trace displaying particle generator (37) is connected with flexible pipe with trace particle playpipe (20), trace particle playpipe (20) is connected with the trace particle playpipe jack (14) on front side board (3), for arranging release trace particle in firing chamber experimental piece (1) to three pairs of bluff bodies;
Described pressure reduction and environment temperature test macro (44), comprise direct supply (45), data collecting instrument (46), differential pressure pickup a (47), differential pressure pickup b (48), differential pressure pickup c (49), differential pressure pickup d (50), thermopair (51), inlet velocity probe (52), velocity of discharge probe (53) and desktop computer b (54); Described direct supply (45) is connected with data collecting instrument (46) by electric wire, and described inlet velocity probe (52) is connected with differential pressure pickup a (47) and differential pressure pickup c (49) respectively by flexible rubber hose; Described velocity of discharge probe (53) is connected with differential pressure pickup b (48) and differential pressure pickup d (50) respectively by flexible rubber hose, is also connected with differential pressure pickup c (49) simultaneously; Described thermopair (51) is placed in environment, and described differential pressure pickup a (47), differential pressure pickup b (48), differential pressure pickup c (49), differential pressure pickup d (50) are all connected with data collecting instrument (46) by signal wire with thermopair (51); Data collecting instrument (46) is connected by signal wire with desktop computer b (54).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524960.9A CN103017999B (en) | 2012-12-07 | 2012-12-07 | Flow field characteristic experiment device of combustion chamber of hydrogen-burning gas turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210524960.9A CN103017999B (en) | 2012-12-07 | 2012-12-07 | Flow field characteristic experiment device of combustion chamber of hydrogen-burning gas turbine |
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| CN103017999A CN103017999A (en) | 2013-04-03 |
| CN103017999B true CN103017999B (en) | 2015-02-25 |
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