CN106989920B - A kind of air injection performance test stand - Google Patents
A kind of air injection performance test stand Download PDFInfo
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- CN106989920B CN106989920B CN201710430783.0A CN201710430783A CN106989920B CN 106989920 B CN106989920 B CN 106989920B CN 201710430783 A CN201710430783 A CN 201710430783A CN 106989920 B CN106989920 B CN 106989920B
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- 238000002347 injection Methods 0.000 title claims abstract description 62
- 239000007924 injection Substances 0.000 title claims abstract description 62
- 238000011056 performance test Methods 0.000 title claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 33
- 239000002245 particle Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a kind of air injection performance test stands, including air compressor (1), blast main (2), screw feeding device (3), proportional flow control valve (4), main conveying air hose (5), positive pressure ventilation pipe (6), eddy flow airduct (7), air injection device (8), the auxiliary pipe of eddy flow (9), transparent delivery pipe (10), conveying straight tube (11), high-speed camera (12), camera support (13), support frame (14), steady flow pipe (15) and vortex-shedding meter (16).Multi-index orthogonal test project study air injection device structural parameters and different distribution of air flow ratios can be used to the affecting laws of jetting performance in the present invention, the delivery situation of lower spraying system interior flow field pressure change and material is combined by being recorded in different parameters, obtain the injector optimal parameter for meeting requirement of actual working condition, promote air injection device transfer efficiency, ensure the reliability of air-transport system, reduces the generation of the accidents such as line clogging.
Description
Technical field
The present invention relates to a kind of air injection performance test stands, suitable for each structural parameters of research air injection device and not
With distribution of air flow ratio to the affecting laws of jetting performance, the optimal parameter range for meeting requirement of actual working condition is found.
Background technique
When exploiting thin and ultra-thin coal seam using drilling method, delay filling protection is carried out to drilling method goaf, is to solve top
Plate is caving, reduces the most ideal solution of prearranged pillar.And girdle amount containing cash is higher, small, the stower of seam mining height
It is limited to make face working space, general stowage unit is difficult to enter inside goaf, therefore, carries out drilling using Pneumatic Conveying Technology
Method goaf filling and spoil conveying, can effectively take into account exploitation economic benefit and environmental benefit, improve the recycling of coal resources
Rate reduces filling cost.The key equipment that injector is fed as pneumatic conveying, architectural characteristic and different distribution of air flow ratios
Example problem solves internal blockage and plays an important role to the jetting performance for improving injector.However, so far
Rarely has the jetting performance testing stand seen for emitter construction characteristic.
Summary of the invention
Goal of the invention: the purpose of the present invention is make up research air injection device architectural characteristic and different distribution of air flow ratios
To the deficiency in jetting performance affecting laws existing method, a kind of strength spray that can use multi-index orthogonal test scheme is provided
Performance test stand is penetrated, the influence of air injection device structural parameters and different distribution of air flow ratios to injector jetting performance is studied
Rule finds the optimum structure parameter range for meeting working condition requirement.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of air injection performance test stand, be used for air injection device (8) performance test, including air compressor (1),
Blast main (2), screw feeding device (3), proportional flow control valve (4), main conveying air hose (5), positive pressure ventilation pipe (6), eddy flow airduct
(7), the auxiliary pipe of eddy flow (9), transparent delivery pipe (10), conveying straight tube (11), high-speed camera (12), steady flow pipe (15) and vortex street
Flowmeter (16), in which: the high pressure gas outlet of air compressor (1) passes through blast main (2) and proportional flow control valve (4) air inlet
Mouth connection, and main defeated air-supply outlet, the outlet of positive pressure wind and Whirl deposite tank outlet are provided on the proportional flow control valve (4), it is described
Main defeated air-supply outlet, main conveying air hose (5), steady flow pipe (15) are sequentially communicated, and the discharge port of the steady flow pipe (15) is used for and gas
The nozzle (8-5) of power injector (8) is connected, and the vortex-shedding meter (16) is set on steady flow pipe (15).The spiral
Positive pressure wind outlet of the positive pressure air port (3-6) of feeding device (3) by positive pressure ventilation pipe (6) and proportional flow control valve (4), institute
The discharge port of screw feeding device (3) is stated for connecting with the feeding inlet of air injection device (8).The Whirl deposite tank outlet, eddy flow
Air hose (7), the auxiliary pipe of eddy flow (9) are sequentially communicated, and the outlet of the auxiliary pipe of the eddy flow (9) for air injection device (8) eddy flow into
Port connection.The discharge port of the transparent delivery pipe (10) is connect with conveying straight tube (11) feed inlet, and transparent delivery pipe (10)
Feed inlet for being connect with the discharge port of air injection device (8).The high-speed camera (12) is mounted on transparent delivery pipe
(10) near, and the high-speed camera (12) is used to shoot the particle motion conditions in transparent delivery pipe (10).The conveying
Pressure sensor is mounted on straight tube (11) and steady flow pipe (15).
Preferred: the screw feeding device (3) includes variable-frequency motor (3-1), hopper (3-2), casing (3-3), axis body
(3-4), conveyor screw (3-5), positive pressure air port (3-6) and discharge port (3-7), the axis body (3-4), conveyor screw (3-5) are set
It is placed in casing (3-3), and the conveyor screw (3-5) is wrapped in the surface of axis body (3-4).The hopper (3-2) is set to
One end of casing (3-3), and the discharge port (3-7) is set to the other end of casing (3-3).The positive pressure air port (3-6) sets
It is placed on casing (3-3) on the one end of discharge port (3-7), and discharge port (3-7) is directed toward in the positive pressure air port (3-6).Institute
Variable-frequency motor (3-1) is stated to be sequentially connected by speed reducer and axis body (3-4).
It is preferred: the positive pressure air port (3-6) of the screw feeding device (3), screw feeding device (3) discharge port, gas
The feeding inlet center of power injector (8) is point-blank.
Preferred: the air injection device (8) includes pan feeding section (8-1), receives section (8-2), converging transition (8-3), mixing
Section (8-4), nozzle (8-5), pagoda connector (8-6).It is described to receive section (8-2), converging transition (8-3), mixing section (8-4) successively
Connection, the pan feeding section (8-1) is set on the side wall for receiving section (8-2), and the nozzle (8-5) is set to and receives section (8-
2) far from the one end of converging transition (8-3) on, and the nozzle (8-5) is connected to by pagoda connector (8-6) with steady flow pipe (15),
The pan feeding section (8-1) connect with discharge port (3-7).
Preferred: the pan feeding section (8-1) and the angle for receiving section (8-2) are θ, 60 °≤θ≤90 °.
It is preferred: described converging transition one end (8-3) be big opening, other end be small opening, one end of big opening with connect
It is connected by section (8-2), one end of small opening is connect with mixing section (8-4).The length of the converging transition (8-3) is l3,
100mm≤l3≤400mm。
Preferred: the nozzle (8-5) is welded on the side the ring flange with through-hole (8-11), and ring flange (8-11)
The other side be provided with threaded hole, the threaded hole is arranged around through-hole, which, which is fixedly mounted on, receives section (8-2)
Upper one end far from converging transition (8-3), and described pagoda connector one end (8-6) is threadedly coupled with threaded hole, the other end and current stabilization
Manage (15) connection.
Preferred: the length of the nozzle (8-5) is l1, 50mm≤l1≤170mm.
It is preferred: described to receive section (8-2), converging transition (8-3), be provided with gasket seal one between mixing section (8-4).
It is preferred: to be provided with gasket seal two between the pan feeding section (8-1) and discharge port (3-7).
The present invention compared with prior art, has the advantages that
Air injection performance test stand of the present invention is simple with structure, occupy little space, is vdiverse in function, testing stand works surely
The advantages that determining.Total wind regime flow is proportionately distributed to main conveying wind, positive pressure wind and Whirl deposite tank, main conveying wind mentions for transportation system
For power, to solve the problems, such as pan feeding section returning charge that conventional injector often has, Whirl deposite tank disturbance gas body forms eddy flow, makes positive pressure wind
Material keeps " rotation is floating " state to reduce minimum conveying flow velocity and improve conveying distance.Meanwhile by entering in air injection device
Expect that section and receiver section welding are whole, reduce the combining and interchanging of section, nozzle and connecting flange, and cooperates pressure sensor, vortex street
Flowmeter, screw feeding system, proportional flow control valve, transparent delivery pipe and high-speed camera can get different air-flow ratios, difference
High pressure nozzle outlet air flow, interior flow field pressure under conveying capacity and Different structural parameters under air injection device operating condition become
Change, particle motion conditions and jeting effect.Multi-index orthogonal test project study air injection device structure can be used in the invention
Parameter compensates in air injection device to the blank of different distribution of air flow ratio researchs, tool the affecting laws of jetting performance
There are wide applicability and stronger novelty.
Detailed description of the invention
Fig. 1 is front view of the invention.
Fig. 2 is top view of the invention.
Fig. 3 is axonometric drawing of the invention.
Fig. 4 is screw feeding device axonometric drawing of the invention.
Fig. 5 is air injection device front view of the invention.
Fig. 6 is the air injection performance experiment table pan feeding section of the invention cross-sectional view whole with section welding is received.
Fig. 7 is the cross-sectional view of air injection performance experiment table converging transition of the invention.
Fig. 8 is the cross-sectional view of air injection performance test stage nozzle of the invention.
Fig. 9 is the main view of air injection performance experiment table connecting flange of the invention.
In figure: 1, air compressor, 2, blast main, 3, screw feeding device, 4, proportional flow control valve, 5, main conveying air hose,
6, positive pressure ventilation pipe, 7, eddy flow airduct, 8, air injection device, 9, the auxiliary pipe of eddy flow, 10, transparent delivery pipe, 11, conveying straight tube, 12, height
Fast video camera, 13, camera support, 14, support frame, 15, steady flow pipe, 16, vortex-shedding meter, 3-1, variable-frequency motor, 3-2, hopper,
3-3, casing, 3-4, axis body, 3-5, conveyor screw, 3-6, positive pressure air port, 3-7, discharge port, 8-1, pan feeding section, 8-2, receiving
Section, 8-3, converging transition, 8-4, mixing section, 8-5, nozzle, 8-6, pagoda connector, 8-7, flange bolt M12,8-8, flange nut
M12,8-9, flange bolt M8,8-10, flange nut M12,8-11, connecting flange, 6.1- pan feeding section weld entirety with section is received
(θ=90 °), 6.2- pan feeding section and receive section and weld whole (θ=80 °), 6.3-pan feeding sections and receive section welding it is whole (θ=
70 °), 6.4- pan feeding section welds whole (θ=60 °), 7.1- converging transition (l with section is received3=100mm), 7.2- converging transition
(l3=200mm), 7.3- converging transition (l3=300mm), 7.4- converging transition (l3=400mm), 8.1- nozzle (l1=
50mm), 8.2- nozzle (l1=90mm), 8.3- nozzle (l1=130mm), 8.4- nozzle (l1=170mm), 9.1- connection
Flange (l2=0), 9.2- connecting flange (l2=10mm), 9.3- connecting flange (l2=20mm), 9.4- connecting flange (l2=
30mm)。
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these examples are merely to illustrate this
It invents rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention various
The modification of equivalent form falls within the application range as defined in the appended claims.
A kind of air injection performance test stand is used for the performance test of air injection device (8), as shown in Figures 1 to 3, including
Air compressor (1), blast main (2), screw feeding device (3), proportional flow control valve (4), main conveying air hose (5), positive pressure ventilation pipe
(6), eddy flow airduct (7), the auxiliary pipe of eddy flow (9), transparent delivery pipe (10), conveying straight tube (11), high-speed camera (12), current stabilization
Manage (15) and vortex-shedding meter (16), in which: the high pressure gas outlet of air compressor (1) passes through blast main (2) and ratio stream
The connection of valve (4) air inlet is measured, and is provided with main defeated air-supply outlet, the outlet of positive pressure wind and eddy flow on the proportional flow control valve (4)
Wind outlet, the defeated air-supply outlet of the master, main conveying air hose (5), steady flow pipe (15) are sequentially communicated, the discharging of the steady flow pipe (15)
Mouth with the nozzle (8-5) of air injection device (8) for being connected, and the vortex-shedding meter (16) is set to steady flow pipe (15)
On.The positive pressure wind that the positive pressure air port (3-6) of the screw feeding device (3) passes through positive pressure ventilation pipe (6) and proportional flow control valve (4)
Outlet, the discharge port of the screw feeding device (3) with the feeding inlet of air injection device (8) for connecting.The eddy flow
Wind outlet, eddy flow airduct (7), the auxiliary pipe of eddy flow (9) are sequentially communicated, and the outlet of the auxiliary pipe of the eddy flow (9) is used for and air injection
The connection of device (8) swirling inlet mouth.The discharge port of the transparent delivery pipe (10) is connect with conveying straight tube (11) feed inlet, and transparent
The feed inlet of delivery pipe (10) with the discharge port of air injection device (8) for connecting.The high-speed camera (12) is mounted on
Near bright delivery pipe (10), and the high-speed camera (12) is used to shoot the particle motion conditions in transparent delivery pipe (10).
Pressure sensor is mounted on the conveying straight tube (11) and steady flow pipe (15).Blast main (2) conveying pressure-air by than
Example flow valve (4) is divided into main conveying wind, positive pressure wind and Whirl deposite tank by different proportion, main conveying wind pass through main conveying air hose (5) by
Nozzle enters in air injection device (8), provides power for entire transmission process, positive pressure wind enters spiral by positive pressure ventilation pipe (6)
In feeding device 3, returning charge is prevented, Whirl deposite tank is entered the mixing chamber of air injection device (8) by the auxiliary pipe of eddy flow (9), makes gas
Eddy flow is formed, distribution of air flow ratio can be changed according to requirement of experiment.
Air compressor 1 generates high pressure gas and enters 4 one end of proportional flow control valve by blast main 2, and proportional flow control valve 4 is another
End connects main conveying air hose 5, positive pressure ventilation pipe 6 and eddy flow airduct 7, main conveying air hose 5 and connect with steady flow pipe 15, and steady flow pipe 15 is another
End connection vortex-shedding meter 16, positive pressure ventilation pipe 6 are connected with screw feeding device 3, and eddy flow airduct 7 is connected with the auxiliary pipe 9 of eddy flow, spiral
The discharge port of feeding device 3 and the pan feeding section of air injection device 8 are bolted, and are both mounted on support frame 14, gas
The outlet of power injector 8 connects transparent delivery pipe 10, the transparent outlet of delivery pipe 10 connection conveying straight tube 11, and high-speed camera 12 is pacified
On the camera support 13 of transparent 10 side of delivery pipe.
As shown in figure 4, the screw feeding device (3) includes variable-frequency motor (3-1), hopper (3-2), casing (3-3), axis
Body (3-4), conveyor screw (3-5), positive pressure air port (3-6) and discharge port (3-7), the axis body (3-4), conveyor screw (3-5)
It is set in casing (3-3), and the conveyor screw (3-5) is wrapped in the surface of axis body (3-4).Hopper (3-2) setting
In one end of casing (3-3), and the discharge port (3-7) is set to the other end of casing (3-3).The positive pressure air port (3-6)
It is set on casing (3-3) on the one end of discharge port (3-7), and discharge port (3-7) is directed toward in the positive pressure air port (3-6).
The variable-frequency motor (3-1) is sequentially connected by speed reducer and axis body (3-4), the positive pressure air port of the screw feeding device (3)
(3-6), the discharge port of screw feeding device (3), air injection device (8) feeding inlet center point-blank.Variable-frequency motor
3-1 drives axis body 3-4 to rotate in casing 3-3 by speed reducer, and conveyor screw 3-5 is welded on axis body 3-4, positive pressure air port 3-
6 settings are connected at the top of tail end with positive pressure ventilation pipe 6, and discharge port 3-7 setting is connected in tail end bottom and air injection device 8 by bolt
It connects, and encrypts gasket to prevent leak-stopping material gas leakage, material is entered by hopper 3-2, is delivered to discharge outlet in positive pressure wind and gravity
Under the action of enter air injection device 8, by changing frequency, the feed quantity of screw feeding device 3 can carry out according to requirement of experiment
Change.
As shown in figure 5, the air injection device (8) includes pan feeding section (8-1), receives section (8-2), converging transition (8-3), mixes
Close section (8-4), nozzle (8-5), pagoda connector (8-6).It is described receive section (8-2), converging transition (8-3), mixing section (8-4) according to
Secondary connection, the pan feeding section (8-1) is set on the side wall for receiving section (8-2), and the nozzle (8-5) is set to receiving section
Far from the one end of converging transition (8-3) on (8-2), and the nozzle (8-5) is connected by pagoda connector (8-6) and steady flow pipe (15)
Logical, the pan feeding section (8-1) connect with discharge port (3-7).Described converging transition one end (8-3) is big opening, and other end is small
Opening, one end of big opening are connect with section (8-2) is received, and one end of small opening is connect with mixing section (8-4).Nozzle (the 8-
5) it is welded on the side the ring flange with through-hole (8-11), and the other side of ring flange (8-11) is provided with threaded hole, it is described
Threaded hole is arranged around through-hole, which is fixedly mounted on the one end received on section (8-2) far from converging transition (8-3),
And described pagoda connector one end (8-6) is threadedly coupled with threaded hole, the other end is connect with steady flow pipe (15).It is described to receive section (8-
2), gasket seal one is provided between converging transition (8-3), mixing section (8-4).The pan feeding section (8-1) and discharge port (3-7) it
Between be provided with gasket seal two.The pan feeding section 8-1 passes through welded connecting, the side receiving section 8-2 with section 8-2 is received
It is connected by flange bolt M12 8-7 and flange nut M12 8-8 with converging transition 8-2 big opening end, other side is also by method
Blue bolt M12 8-7 and flange nut M12 8-8 are connect with connecting flange 8-11, and the connecting flange 8-11 passes through flange spiral shell
Bolt M8 8-9 and flange nut M8 8-10 are connected with nozzle 8-5, the side pagoda connector 8-6 be connected through a screw thread with
Nozzle 8-5 is connected, and other side is connected with steady flow pipe 15, the left side of the mixing section 8-4 pass through flange bolt M12 8-7 with
Flange nut M12 8-8 is connected with converging transition 8-3 osculum end, and encrypts gasket between injector different structure to prevent
Material leakage gas leakage.
As shown in fig. 6, the pan feeding section (8-1) is θ with the angle for receiving section (8-2), 60 °≤θ≤90 °.When θ is respectively
At 90 °, 80 °, 70 ° and 60 °, pan feeding section 8-1 is integrally respectively Fig. 6 .1, Fig. 6 .2, Fig. 6 .3 and figure with the welding for receiving section 8-2
It shown in 6.4, can be replaced according to requirement of experiment, the two sides for receiving section 8-2 are welded with the ring flange of same size.
As shown in fig. 7, the length of the converging transition (8-3) is l3, 100mm≤l3≤400mm.Work as l3Respectively
When 100mm, 200mm, 300mm and 400mm, the structure of converging transition 8-3 is respectively Fig. 7 .1, Fig. 7 .2, Fig. 7 .3 and Fig. 7 .4 institute
Show, the one end converging transition 8-3 is big opening, and other end is small opening, and both ends are welded with the ring flange of same size, different structure
Converging transition 8-3 can be replaced according to requirement of experiment.
As shown in figure 8, the length of the nozzle (8-5) is l1, 50mm≤l3≤170mm works as l1Respectively 50mm,
When 90mm, 130mm and 170mm, the structure of nozzle 8-5 is respectively Fig. 8 .1, Fig. 8 .2, shown in Fig. 8 .3 and Fig. 8 .4,5 left side of nozzle
It is welded with the ring flange of same size, and has the threaded hole of same size, the nozzle 8-5 of different structure can be according to experiment
It is required that being replaced.
As shown in figure 9, being equipped with through-hole and four threaded holes, through-hole and four threaded holes among the connecting flange 8-11
Positional distance with the center connecting flange 8-11 is l2, work as l2When respectively 0,10mm, 20mm and 30mm, connecting flange 8-11's
Structure is respectively Fig. 9 .1, Fig. 9 .2, shown in Fig. 9 .3 and Fig. 9 .4, and the end face connecting flange 8-11 periphery opens that there are six centrosymmetric
The connecting flange 8-11 of threaded hole, different structure can be replaced according to requirement of experiment.
Working principle:
Injector combining and interchanging structure needed for selecting this test, passes through M12 flange bolt 8-7 and M12 flange nut
8-8 will can receive section 8-2, converging transition 8-3, mixing section 8-4 and connecting flange 8-11 respectively and connect, and integral arrangement exists
Unify on axis, then nozzle is installed on connecting flange 8-11 by M8 flange bolt 8-9 and M8 flange nut 8-10, builds
Air injection device 8 is played, injector outlet is connected with transparent delivery pipe 10, and the transparent outlet of delivery pipe 10 is connected with conveying straight tube 11,
Rear integral installation is bolted in the pan feeding section 8-1 of the discharge port 3-7 of screw feeding device 3 and air injection device 8 to prop up
On support 14, and each air hose is connect with spraying system and is finished, completed air injection device jetting performance testing stand and build.
High-speed camera 12 is mounted on camera support 13, camera support 13 and 12 position of high-speed camera is adjusted, makes
High-speed camera 12 can shoot whole section of transparent delivery pipe 10.
Respectively steady flow pipe and conveying straight tube on install pressure sensor, vortex-shedding meter 16 and two groups of pressure sensors by
The power supply of 24V DC power supply, sensor signal are transported to the DH5922N Dynamic Signal of eastern China's test by signal acquiring system
Detecting and analysing system, sample frequency 1000Hz.
The connected frequency converter output frequency of variable-frequency motor 3-1 is set, starts frequency converter and to variable-frequency motor 3-1 turn up
To stabilization, each air flow rate in setting ratio flow valve 4.
Air compressor 1 is opened, valve is opened after air-pressure stable, pressure-air enters spraying system.
Start pan feeding after opening high-speed camera 12 and data collection system, system to be sprayed is interior without stopping high speed after material
Video camera 12 and data collection system simultaneously close valve stopping air inlet, obtain air mass flow, the spraying system of the outlet nozzle 8-5
Interior flow field pressure change and particle motion conditions.
Multi-index orthogonal test project study air injection device structural parameters and different distribution of air flow can be used in the present invention
Ratio to the affecting laws of jetting performance, by be recorded in different parameters combine lower spraying system interior flow field pressure change and
The delivery situation of material obtains the injector optimal parameter for meeting requirement of actual working condition, to instruct injector designs to produce, is promoted
Air injection device transfer efficiency, it is ensured that the reliability of air-transport system reduces the generation of the accidents such as line clogging.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of air injection performance test stand is used for the performance test of air injection device (8), it is characterised in that: including air
Compressor (1), blast main (2), screw feeding device (3), proportional flow control valve (4), main conveying air hose (5), positive pressure ventilation pipe (6),
Eddy flow airduct (7), the auxiliary pipe of eddy flow (9), transparent delivery pipe (10), conveying straight tube (11), high-speed camera (12), steady flow pipe (15)
With vortex-shedding meter (16), in which: the high pressure gas outlet of air compressor (1) passes through blast main (2) and proportional flow control valve (4)
Air inlet connection, and main defeated air-supply outlet, the outlet of positive pressure wind and Whirl deposite tank outlet are provided on the proportional flow control valve (4),
The defeated air-supply outlet of the master, main conveying air hose (5), steady flow pipe (15) are sequentially communicated, and the discharge port of the steady flow pipe (15) is used for
It is connected with the nozzle (8-5) of air injection device (8), and the vortex-shedding meter (16) is set on steady flow pipe (15)；It is described
The positive pressure air port (3-6) of screw feeding device (3) by the positive pressure wind outlets of positive pressure ventilation pipe (6) and proportional flow control valve (4),
The discharge port of the screw feeding device (3) with the feeding inlet of air injection device (8) for connecting；The Whirl deposite tank outlet, rotation
Stream air hose (7), the auxiliary pipe of eddy flow (9) are sequentially communicated, and the outlet of the auxiliary pipe of the eddy flow (9) for air injection device (8) eddy flow
Air inlet connection；
The discharge port of the transparent delivery pipe (10) is connect with conveying straight tube (11) feed inlet, and the charging of transparent delivery pipe (10)
Mouth with the discharge port of air injection device (8) for connecting；The high-speed camera (12) is mounted near transparent delivery pipe (10),
And the high-speed camera (12) is used to shoot the particle motion conditions in transparent delivery pipe (10)；The conveying straight tube (11) with
Steady flow pipe is mounted on pressure sensor on (15).
2. air injection performance test stand according to claim 1, it is characterised in that: the screw feeding device (3) includes
Variable-frequency motor (3-1), hopper (3-2), casing (3-3), axis body (3-4), conveyor screw (3-5), positive pressure air port (3-6) and discharging
Mouth (3-7), the axis body (3-4), conveyor screw (3-5) are set in casing (3-3), and the conveyor screw (3-5) is wound
On the surface of axis body (3-4)；The hopper (3-2) is set to one end of casing (3-3), and the discharge port (3-7) is set to
The other end of casing (3-3)；The positive pressure air port (3-6) is set on casing (3-3) on the one end of discharge port (3-7),
And the positive pressure air port (3-6) is directed toward discharge port (3-7)；The variable-frequency motor (3-1) is driven by speed reducer and axis body (3-4)
Connection.
3. air injection performance test stand according to claim 2, it is characterised in that: the screw feeding device (3) is just
Press air port (3-6), the discharge port of screw feeding device (3), air injection device (8) feeding inlet center point-blank.
4. air injection performance test stand according to claim 2, it is characterised in that: the air injection device (8) include into
Material section (8-1) receives section (8-2), converging transition (8-3), mixing section (8-4), nozzle (8-5), pagoda connector (8-6)；It is described to connect
It is sequentially connected by section (8-2), converging transition (8-3), mixing section (8-4), the pan feeding section (8-1), which is set to, receives section (8-2)
On side wall, and the nozzle (8-5) is set to the one end received on section (8-2) far from converging transition (8-3), and the nozzle (8-
5) it is connected to by pagoda connector (8-6) with steady flow pipe (15), the pan feeding section (8-1) connect with discharge port (3-7).
5. air injection performance test stand according to claim 4, it is characterised in that: the pan feeding section (8-1) and receive section
The angle of (8-2) is θ, 60 °≤θ≤90 °.
6. air injection performance test stand according to claim 4, it is characterised in that: described converging transition (8-3) one end is big
Opening, other end are small opening, and one end of big opening is connect with section (8-2) is received, one end of small opening and mixing section (8-4)
Connection；The length of the converging transition (8-3) is l3, 100mm≤l3≤400mm.
7. air injection performance test stand according to claim 4, it is characterised in that: the nozzle (8-5), which is welded on, to be had
On side ring flange (8-11) of through-hole, and the other side of ring flange (8-11) is provided with threaded hole, and the threaded hole is around through-hole
Arrangement, which is fixedly mounted on the one end received on section (8-2) far from converging transition (8-3), and the pagoda connects
Head one end (8-6) is threadedly coupled with threaded hole, and the other end is connect with steady flow pipe (15).
8. air injection performance test stand according to claim 4, it is characterised in that: the length of the nozzle (8-5) is l1,
50mm≤l1≤170mm。
9. air injection performance test stand according to claim 4, it is characterised in that: described to receive section (8-2), converging transition
Gasket seal one is provided between (8-3), mixing section (8-4).
10. air injection performance test stand according to claim 4, it is characterised in that: the pan feeding section (8-1) and discharge port
Gasket seal two is provided between (3-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710430783.0A CN106989920B (en) | 2017-06-08 | 2017-06-08 | A kind of air injection performance test stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710430783.0A CN106989920B (en) | 2017-06-08 | 2017-06-08 | A kind of air injection performance test stand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106989920A CN106989920A (en) | 2017-07-28 |
| CN106989920B true CN106989920B (en) | 2019-05-28 |
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|---|---|---|---|---|
| US3893833A (en) * | 1972-04-26 | 1975-07-08 | Flex Kleen Corp | Compartmented pulse jet dust collector |
| CN101081490A (en) * | 2006-05-31 | 2007-12-05 | 陈君奎 | Granular material air injection device |
| CN104595059A (en) * | 2014-11-28 | 2015-05-06 | 广西淞森车用部件有限公司 | Gas rail of fuel gas ejector |
| CN105983297A (en) * | 2015-02-09 | 2016-10-05 | 华北电力大学 | Coal-fired power plant fly ash adsorbent integral modification and injection mercury-removing system |
| CN106288477A (en) * | 2015-05-27 | 2017-01-04 | 开利公司 | Ejector system and operation method |
| CN106644540A (en) * | 2016-10-19 | 2017-05-10 | 上海核工程研究设计院 | Test system for testing performance of nuclear power station master control room air ejector |
-
2017
- 2017-06-08 CN CN201710430783.0A patent/CN106989920B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893833A (en) * | 1972-04-26 | 1975-07-08 | Flex Kleen Corp | Compartmented pulse jet dust collector |
| CN101081490A (en) * | 2006-05-31 | 2007-12-05 | 陈君奎 | Granular material air injection device |
| CN104595059A (en) * | 2014-11-28 | 2015-05-06 | 广西淞森车用部件有限公司 | Gas rail of fuel gas ejector |
| CN105983297A (en) * | 2015-02-09 | 2016-10-05 | 华北电力大学 | Coal-fired power plant fly ash adsorbent integral modification and injection mercury-removing system |
| CN106288477A (en) * | 2015-05-27 | 2017-01-04 | 开利公司 | Ejector system and operation method |
| CN106644540A (en) * | 2016-10-19 | 2017-05-10 | 上海核工程研究设计院 | Test system for testing performance of nuclear power station master control room air ejector |
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| Publication number | Publication date |
|---|---|
| CN106989920A (en) | 2017-07-28 |
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