CN205958413U - Gas -solid two -phase flow simulating measurement setup - Google Patents
Gas -solid two -phase flow simulating measurement setup Download PDFInfo
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- CN205958413U CN205958413U CN201620711060.9U CN201620711060U CN205958413U CN 205958413 U CN205958413 U CN 205958413U CN 201620711060 U CN201620711060 U CN 201620711060U CN 205958413 U CN205958413 U CN 205958413U
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- 238000005259 measurement Methods 0.000 title abstract description 10
- 239000007787 solid Substances 0.000 title abstract description 9
- 230000005514 two-phase flow Effects 0.000 title abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims description 92
- 238000009826 distribution Methods 0.000 claims description 39
- 230000006698 induction Effects 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000000843 powder Substances 0.000 abstract description 11
- 238000011160 research Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 239000002817 coal dust Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 101100408454 Arabidopsis thaliana PLC6 gene Proteins 0.000 description 1
- 101100408456 Arabidopsis thaliana PLC8 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 239000002801 charged material Substances 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 231100000037 inhalation toxicity test Toxicity 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a gas -solid two -phase flow simulating measurement setup, includes tubular electric heater (1), spraying humidification device (2), vacuum pump (3), screw feed system (4), experimental pipeline (5), sack cleaner (6), a plurality of electrode sensor, the one end of experimental pipeline (5) links to each other with the air inlet pipeline, is provided with tubular electric heater (1) and spraying humidification device (2) on the air inlet pipeline respectively, screw feed system (4) below is through pipe connection to experimental pipeline (5) that link to each other with the air inlet pipeline, the flange suitable for reading of screw feed system (4) links to each other with vacuum pump (3) through sack cleaner (6), the other end of experimental pipeline (5) is connected to the feed bin of screw feed system (4) through sack cleaner (6), set up a plurality of electrode sensor on experimental pipeline (5). The utility model discloses can realize simulating coal -fired power generation sector and once fail a series of actual engineering buggys detection cases such as powder system, carry out the gas -solid two -phase flow speed and the research of relative concentration detection of electrostatic detection different temperatures, different water capacities.
Description
Technical field
The utility model belongs to power plant boiler technical field, is related to a kind of Dual-Phrase Distribution of Gas olid simulation test device, specifically
The Dual-Phrase Distribution of Gas olid being to relate to the flowing Parameter Measuring system check of one of industrial production electrostatic method coal dust is said on ground
Simulation test device.
Background technology
The stability of coal-fired power plant's boiler combustion, economy and First air enter the wind speed of burner hearth and the big of coal powder density
Little and uniformity is in close relations, and the wind powder uniformity of the height of coal powder density and each coal burner directly influences in stove
The efficiency of combustion of the stable and boiler of combustion conditions.
The flying marking of domestic power plant and wind, powder on-line checking have that installation rate is high, poor the asking of Stability and veracity
Topic, the wind of shortage reflection boiler combustion status, powder, coal, grey isoparametric accurate measurement means, these all directly affect optimization combustion
Burn modeling and the accuracy of optimum results.
Using the electric charge of the generation that rubs between the friction between the coal dust of flowing and coal dust and coal dust and pipeline in pipeline,
The detection carrying out coal dust flow velocity with coal powder density in pipeline is one of highly effective measuring method.Entered using electrostatic method in the world
There are Britain, the U.S., Germany and South Africa etc. in the country of row pulverized coal flow measurement.The Yan Y of Britain utilizes electrostatic method to measure pulverized coal flow
Speed succeeds, and electrostatic transducer insertion coal dust input channel measurement coal powder density is achieved pilot-scale experiment by Millen, and ABB is public
A kind of plug-in type electrostatic cutting load testing instrument that department is developed jointly with Teesside university, the insertion power transportation pipe that it adopts
One section of short tube and one section of reel, it is achieved that coal powder density can be measured, can measure coal dust speed again.
But the humidity in discovery Dual-Phrase Distribution of Gas olid in the research process to electrostatic detection wind powder flow rate and concentration, temperature
Have ratio large effect to electrostatic detection, in order to deeper into research electrostatic induction sensor to gas-solid rolling particles speed, dense
The measurement of degree, the electrostatic signal that research sensor obtains avoids easily being affected by factors such as humidity, temperature and atures of coal, strengthens sensing
The adaptability of device.
In existing polytype Measurement research device, substantially it is merely able to simulate ambient temperature and moisture environment
Under Dual-Phrase Distribution of Gas olid speed verification, the verification for Dual-Phrase Distribution of Gas olid relative mass flow (relative concentration) and different gas
At solid mixture temperature and moisture condition, the impact to electrostatic induction is but relatively felt simply helpless.
Content of the invention
The deficiency existing for domestic and international gas-particle two-phase flow field simulation/test device, the purpose of this utility model is to provide
A kind of Dual-Phrase Distribution of Gas olid analogue means it is adaptable to alternating temperature, get wet under the conditions of Dual-Phrase Distribution of Gas olid take electric energy power and flow behavior
Research and analysis, and the testing research for the gas-particle two-phase flow detection device to electrostatic principle.The application specifically adopt with
Lower technical scheme：
A kind of Dual-Phrase Distribution of Gas olid simulating test device, described simulating test device includes tube electric heater 1, spraying humidification
Device 2, vavuum pump 3, screw feeder system 4, test pipeline 5, sack cleaner 6, multiple electrodes sensor；It is characterized in that：
One end of test pipeline 5 is connected with air inlet pipeline, and air inlet pipeline is respectively arranged with tube electric heater 1 and spraying
Damping device 2；
It is connected to the test pipeline 5 being connected with air inlet pipeline, described spiral shell by pipeline below the feed bin of screw feeder system 4
The flange suitable for reading of rotation feeding system 4 is connected with vavuum pump 3 through sack cleaner 6；
The other end of described test pipeline 5 connects through sack cleaner 6 to the feed bin of screw feeder system 4；
On described test pipeline 5, multiple electrodes sensor is set.
The utility model further preferably employs the following technical solutions：
Two sections of horizontal tube sections horizontal pipeline section (5-1,5-2) be arrangeding in parallel of described inclusion, two sections of hydraulic test pipelines
It is connected with VERTICAL TUBE section by bend pipe after parallel connection, test gas-solid two is respectively mounted on two horizontal tube sections and vertical pipeline
The electrode sensor of the electrostatic induction signal mutually flowing.
The horizontal tube section and VERTICAL TUBE section of test pipeline 5 are also respectively provided with observation panel, observation panel relatively sets
Put shooting finder 7.
Described observation panel is the transparent window using quartz glass, and quartz glass is connected to corresponding by flange and stay bolt
On the opening of test pipeline.
The hydraulic test pipeline and vertical test pipeline of test pipeline 5 are respectively provided with 1 pressure-measuring-point；Try vertical
Test and temperature point and humidity measuring point are also set up on pipeline.
Described test pipeline 5 also sets up the ball valve for opening or closing test pipeline 5.
Described Dual-Phrase Distribution of Gas olid simulation test device is additionally provided with bypass conduit, and described bypass short circuit is other to be connected on test pipeline
5 hydraulic test section and the two ends of vertical test section, described bypass conduit is provided with bypass conduit ball valve.
Equipped with vortex-shedding meter on admission line.
Described simulating test device also still optionally further includes PLC 8, described PLC8 respectively with screw feeder system 4,
Vavuum pump 3, tube electric heater 1, spraying humidifier 2 and high-speed camera finder 7 are connected.
The utility model, with respect to prior art, has the advantages that：
The utility model can simulate a series of Practical Project coal dust such as the powder system in coal fired power generation field detection and
Distribution case, carries out installation site research, Dual-Phrase Distribution of Gas olid speed and the relative concentration detection check research of electrostatic detection.Separately
Outward, the utility model structure is simply it is easy to promote.
1st, test the impact to electrostatic capacity sensor for many sensing electrodes installation direction, that is, be horizontally mounted and vertically-mounted position
Difference, and then analyze impact to velocity measuring；
2nd, the change of test Dual-Phrase Distribution of Gas olid mixture temperature carries out Dual-Phrase Distribution of Gas olid to electrode sensor and takes electric induction ability
Impact；
3rd, the change of test Dual-Phrase Distribution of Gas olid mixture humidity carries out Dual-Phrase Distribution of Gas olid to electrode sensor and takes electric induction ability
Impact.
Brief description
Fig. 1 is the application Dual-Phrase Distribution of Gas olid experimental rig structured flowchart.
Specific embodiment
Below according to Figure of description, in conjunction with preferred embodiment to the technical solution of the utility model further specifically
Bright.
As shown in figure 1, the utility model includes tube electric heater 1, spraying humidifier 2, vavuum pump 3, screw feeder
System 4, test pipeline 5-1,5-2,5-3, sack cleaner 6, high-speed camera finder 7, PLC control system 8 (note：PLC 8
For optional device, as inapplicable PLC, the part such as tube electric heater 1 in the application, spraying humidifier 2, vavuum pump 3
All can control on the spot), electrode sensor.
Dual-Phrase Distribution of Gas olid experimental rig is made up of air inlet pipeline, test pipeline, purging bypass conduit.Whole experimental rig contains
There are 3 sections of test pipelines, wherein comprise one section of vertically test pipeline and two sections of hydraulic test pipelines, to meet to vertically-mounted and water
Safety holding position treats the impact of test block measurement result；Horizontal pipeline section, vertical pipeline section are connected by multigroup bend pipe, wherein bend pipe
Radius is 300mm.For the verification for Dual-Phrase Distribution of Gas olid relative concentration, two sections of hydraulic test pipelines have phase with test pipeline
Same pepeline characteristic, is respectively adopted three-way valve and is attached with test pipeline, with upper pipeline all using Q102 × 11mm not
Rust steel pipe.
Hydraulic test pipeline section and vertical test section are provided with observation pipeline section, viewing section adopts the quartzy glass of 300mm length
Glass, is connected on test pipeline by flange and stay bolt, had both been available for the flowing that experimenter observes gas-solid phase in pipeline
State, also is available for the transparent window used by high-speed camera finder 7.High-speed camera finder 7 and experimental observation section optical axis
Highly consistent, and optical axis intersected vertically with the center of viewing section, can photograph solid particle using high-speed camera finder 7
Running orbit.
During test, tube electric heater has startup and does not start two states, under tube electric heater starting state, empty
Gas, under the extraction of vavuum pump 3, enters test section through preheating.Adjust the power of tube electric heater, entrance can be made to test
The air themperature highest of pipeline section is preheating to 90 DEG C.Tube electric heater is exported to after being surrounded by 25mm on the pipeline of gas-solid mixing point
Heat-insulation layer, to reduce thermal loss.The volume flow of air is measured with vortex-shedding meter, and gas flow can be in 70m3/ h～
700m3The range changing of/h.
In order to simulate the impact to electrostatic sensing electrode electrostatic capacity sensor for the Dual-Phrase Distribution of Gas olid water capacity, on gas path pipe
Spraying humidifier 2 is installed, to change the humidity in Dual-Phrase Distribution of Gas olid, the exhaust outlet of spraying humidifier 2 passes through band tubing
Connecting welding, on the T-shaped base on gas circuit pipeline, is designed by venturi-type eductors, increases pipeline negative pressure, to increase spraying.
By changing the humidity environment of Dual-Phrase Distribution of Gas olid flowing, with the electrical characteristics of taking for studying wet granular under different water capacities, quantitative
Analyze the critical point humidity of passive electrostatic induction detection.Spraying humidifier is respectively high, medium and low, low fourth gear, manually
Adjust different gears to change no humidification amount.
Screw feeder system 4 comprises hopper, feeding motor, feeding screw rod, spiral claim, and constitutes an at the uniform velocity feed system
System.Feeding motor adopts variable-frequency motor, to meet the control of different feeding coals.Under hopper, mouth tack flange connects screw feeder
Machine, flange suitable for reading connects sack cleaner.Feeding screw rod and spiral claim using being flexible coupling, to realize hopper is weighed.Hello
Material motor adopts variable-frequency motor, to meet the control of different feeding coals.
Material particles let-down below feed bin is continuously released in screw(-type) feeder, and by system after weighing through helix balance
Negative pressure inhalation test pipeline, be mixed into gas-solid phase with air.In unit interval, the inlet amount of material particles can be passed through
The rotating speed changing feed motor is controlled by.
Sack cleaner one is to avoid dust to produce harmful effect to electric control valve after deduster, and two is to prevent dust from entering
Enter air, pollute.House outlet connects gas exhaust piping.Dual-Phrase Distribution of Gas olid is respectively through hydraulic test section and vertical pipeline
After the separation of Duan Houjing sack cleaner, solid can fall into feed bin and be circulated, and the gas after separating is drained through air channel, minimum
Dedusting particle diameter is 0.1 μm.After preventing the material after humidifying from separating through sack cleaner, stick together inside deduster,
It is provided with purging bypass, with during for unavailability material, using hot air blowing deduster it is ensured that dedusting in experimental rig
Effect.
The operation of this gas-solid phase experimental rig all can be for controlling, if using can be after screening device PLC, except vacuum on the spot
Pump is to manually start remaining all operations outer, including presetting, often of range of flow (air mass flow, the inlet amount of material)
Plant the setting of pendulous frequency, data acquisition and processing (DAP) etc. under flow regime, then all automatically can carry out under PLC control,
In each measurement, between the electrostatic signal of sensor output, the calculating of cross-correlation function, also can be existed by cross-correlated signal analyzer
The instruction of PLC completes under controlling.
Test pipeline is provided with 3 pressure-measuring-points, is located at unit length level, vertical test section respectively.Perpendicular
Straight test section setting temperature point and humidity measuring point.Simultaneously equipped with vortex-shedding meter on gas path pipe, for design condition
Air quantity.
Described multiple electrodes sensor 9-1,9-2,9-3,9-4,9-5,9-6 are fixed on test by flange and stay bolt
On pipeline.Electrode sensor is divided into conventional electrode sensor and the electrode sensor after insulation processing, directly right to be used for
Ratio changes the impact to measurement signal after Dual-Phrase Distribution of Gas olid humidity.
Specifically the arrangement of electrode sensor is：A pair of conventional electrode sensor 9-1,9-3 are separately mounted to level
The position on the upper right side of test section 5-1,5-2；A pair electrode sensor 9-2,9-4 through insulation processing is separately mounted to level
The position of test section 5-1,5-2 upper left side；By a conventional electrode sensor 9-5 and an electrode sensing through insulation processing
Device 9-6 is separately mounted to vertical test section；Electrode sensor is passed through stay bolt and is connected with the flange on test pipeline, is fixed on examination
Test on pipeline.
Experiment process is：Install Dual-Phrase Distribution of Gas olid experimental rig, close bypass ball valve, charged material into by feeding port
To in experimental rig, open test pipeline ball valve, start vavuum pump, make gas be in higher speed motion state, work as steady air current
Afterwards, open screw feeder motor so as to stably be operated under a certain rotating speed, when flowing wind flow signal and pressure signal are all steady
After fixed, the signal such as synchronous recording flowing wind blast, flow, various differential pressure and electrode sensor.
Whole gas flow rate is changed by the frequency changing vavuum pump, described experimental rig disclosure satisfy that gas flow rate exists
The flowing velocity of 20～35m/s, changes the density of Dual-Phrase Distribution of Gas olid, described test dress by the frequency changing screw(-type) feeder
Put and disclosure satisfy that solid and gas volumetric concentration changes between 0.05～0.5%, to complete all operating condition of test.
When carrying out alternating temperature working condition tests, start tube electric heater, control Dual-Phrase Distribution of Gas olid temperature highest to be adjustable to 90 DEG C；
If carry out the Dual-Phrase Distribution of Gas olid test under different humidity atmosphere, only need to start described spraying humidifier 2.Noticeable
Be, in order to prevent due to humidity of materials excessive, lead to sack cleaner occur a little material adhesion after, can by closing material enter
Mouth valve, opens tube electric heater, closes test ball valve, opens bypass purging ball valve and carries out experimental rig purging using hot blast.
Claims (9)
1. a kind of Dual-Phrase Distribution of Gas olid simulating test device, described simulating test device includes tube electric heater (1), spraying humidification
Device (2), vavuum pump (3), screw feeder system (4), test pipeline (5), sack cleaner (6), multiple electrodes sensor；Its
It is characterised by：
One end of test pipeline (5) is connected with air inlet pipeline, and air inlet pipeline is respectively arranged with tube electric heater (1) and spraying
Damping device (2)；
It is connected to the test pipeline (5) being connected with air inlet pipeline, described spiral shell by pipeline below the feed bin of screw feeder system (4)
The flange suitable for reading of rotation feeding system (4) is connected with vavuum pump (3) through sack cleaner (6)；
The other end of described test pipeline (5) connects to the feed bin of screw feeder system (4) through sack cleaner (6)；
Described test pipeline (5) is upper to arrange multiple electrodes sensor.
2. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 it is characterised in that：
Two sections of horizontal tube sections horizontal pipeline section (5-1,5-2) be arrangeding in parallel of described inclusion, two sections of hydraulic test pipelines are in parallel
It is connected with VERTICAL TUBE section by bend pipe afterwards, two horizontal tube sections and vertical pipeline are respectively mounted test Dual-Phrase Distribution of Gas olid
Electrostatic induction signal electrode sensor.
3. Dual-Phrase Distribution of Gas olid simulating test device according to claim 2 it is characterised in that：
The horizontal tube section and VERTICAL TUBE section of test pipeline (5) are also respectively provided with observation panel, observation panel setting relatively
Shooting finder (7).
4. Dual-Phrase Distribution of Gas olid simulating test device according to claim 3 it is characterised in that：
Described observation panel is the transparent window using quartz glass, and quartz glass is connected to corresponding test by flange and stay bolt
On the opening of pipeline.
5. the Dual-Phrase Distribution of Gas olid simulating test device according to Claims 2 or 3 it is characterised in that：
The hydraulic test pipeline and vertical test pipeline of test pipeline (5) are respectively provided with 1 pressure-measuring-point；Test vertical
Temperature point and humidity measuring point are also set up on pipeline.
6. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 and 2 it is characterised in that：
Described test pipeline (5) also sets up the ball valve for opening or closing test pipeline (5).
7. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 and 2 it is characterised in that：
Described Dual-Phrase Distribution of Gas olid simulation test device is additionally provided with bypass conduit, and described bypass short circuit is other to be connected on test pipeline (5)
Hydraulic test section and vertical test section two ends, described bypass conduit is provided with bypass conduit ball valve.
8. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 and 2 it is characterised in that：
Equipped with vortex-shedding meter on admission line.
9. Dual-Phrase Distribution of Gas olid simulating test device according to claim 1 and 2 it is characterised in that：
Described simulating test device still further comprises PLC (8), described PLC (8) respectively with screw feeder system (4), vavuum pump
(3), tube electric heater (1), spraying humidifier (2) and high-speed camera finder (7) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620711060.9U CN205958413U (en) | 2016-07-07 | 2016-07-07 | Gas -solid two -phase flow simulating measurement setup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620711060.9U CN205958413U (en) | 2016-07-07 | 2016-07-07 | Gas -solid two -phase flow simulating measurement setup |
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| Publication Number | Publication Date |
|---|---|
| CN205958413U true CN205958413U (en) | 2017-02-15 |
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ID=57969316
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556967A (en) * | 2020-12-30 | 2021-03-26 | 太原理工大学 | Gas-solid two-phase migration simulation test device for pipe network with complex structure |
| CN113252521A (en) * | 2021-05-08 | 2021-08-13 | 浙江理工大学 | Gas-solid two-phase flow deposition characteristic experimental device with automatic particle size screening function |
| CN114659770A (en) * | 2022-03-18 | 2022-06-24 | 淄博市产品质量检验研究院 | Abrasion detection device and method for solid-liquid two-phase fluid conveying pipeline |
| CN114873280A (en) * | 2022-04-29 | 2022-08-09 | 天津大学 | Recyclable material conveying equipment for measuring powdery material flow and metering method |
-
2016
- 2016-07-07 CN CN201620711060.9U patent/CN205958413U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556967A (en) * | 2020-12-30 | 2021-03-26 | 太原理工大学 | Gas-solid two-phase migration simulation test device for pipe network with complex structure |
| CN113252521A (en) * | 2021-05-08 | 2021-08-13 | 浙江理工大学 | Gas-solid two-phase flow deposition characteristic experimental device with automatic particle size screening function |
| CN114659770A (en) * | 2022-03-18 | 2022-06-24 | 淄博市产品质量检验研究院 | Abrasion detection device and method for solid-liquid two-phase fluid conveying pipeline |
| CN114873280A (en) * | 2022-04-29 | 2022-08-09 | 天津大学 | Recyclable material conveying equipment for measuring powdery material flow and metering method |
| CN114873280B (en) * | 2022-04-29 | 2023-06-27 | 天津大学 | Recyclable material conveying equipment and metering method for measuring flow of powdery material |
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Address after: 101303 2nd floor, building 307, Guodian New Energy Institute, 9 Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing Patentee after: Guoneng xinkong Internet Technology Co.,Ltd. Address before: Building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing 100039 Patentee before: BEIJING HUADIAN TIANREN ELECTRIC POWER CONTROL TECHNOLOGY Co.,Ltd. |
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Address after: Room 618 and 619, 6th floor, building 301, Guodian New Energy Institute, No. 9, Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing 102209 Patentee after: Guoneng Information Control Technology Co.,Ltd. Country or region after: China Address before: 101303 2nd floor, building 307, Guodian New Energy Institute, 9 Yingcai North 2nd Street, future science and Technology City, Changping District, Beijing Patentee before: Guoneng xinkong Internet Technology Co.,Ltd. Country or region before: China |