AU2019101391A4 - An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression - Google Patents
An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression Download PDFInfo
- Publication number
- AU2019101391A4 AU2019101391A4 AU2019101391A AU2019101391A AU2019101391A4 AU 2019101391 A4 AU2019101391 A4 AU 2019101391A4 AU 2019101391 A AU2019101391 A AU 2019101391A AU 2019101391 A AU2019101391 A AU 2019101391A AU 2019101391 A4 AU2019101391 A4 AU 2019101391A4
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- AU
- Australia
- Prior art keywords
- wind tunnel
- dust
- surfactant
- aided
- spray system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000001629 suppression Effects 0.000 title claims abstract description 21
- 239000002817 coal dust Substances 0.000 title claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000000443 aerosol Substances 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 4
- 229920002972 Acrylic fiber Polymers 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 3
- 230000000903 blocking effect Effects 0.000 claims abstract 2
- 238000011156 evaluation Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Abstract An innovative apparatus for wind tunnel test is designed for evaluating the performance of the surfactant-aided coal dust suppression to reduce coal dust in underground coal mines. The traditional experiments evaluate the performance of surfactant-aided suppression based on the surface tension test, the adsorption test, the zeta potential test and coal wettability test. This innovative apparatus can evaluate the coal dust reduction performance of the surfactant-aided suppression in underground roadways and tunnels more authentic than traditional static methods. This apparatus mainly consists of a wind tunnel body made by iron frame and acrylic plastic, a dust generator, a liquid spray system, and five metal stands. This described apparatus can be used to evaluate the performance of the surfactant-aided suppression for coal dust reduction. (5) (6) (8) (3) (1) Blocking mesh (H: 0.5m, W: 0.5m) (2) Dust generator (3) Stands (4) Liquid spray system (5) Handheld aerosol monitor (6) Dust measurement hole (0:0.005m) (7) Wind tunnel heading (H: 0.5m, W: 0.5m) (8) Water residual (9) Wind tunnel body (H: 0.5m, W: 0.5m, L: 4.5m+1m+4.5m) Figure 1 Wind Tunnel
Description
Invention Description
An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression
The invention is described in the following statement
2019101391 13 Nov 2019
An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression
Background
The traditional evaluation methods for the surfactant-aided suppression are usually static tests in terms of the surface tension test, the adsorption test, the zeta potential test and coal wettability test. The innovative wind tunnel apparatus is more reliable for evaluating the surfactant-aided coal dust suppression than the traditional static evaluation methods because this wind tunnel apparatus takes consideration of the fluid dynamics, and the contact and collision between coal particles and liquid droplets. Therefore, the traditional experiments cannot directly evaluate the performance of a surfactant aided suppression with accuracy as the wind tunnel experiments. For the field test, although it is the most direct way of evaluating the coal dust control performance of a surfactant-aided suppression, there are numerous uncontrollable factors in a field test, and it is hard to generalise results and conclusions. This innovative apparatus has been designed to simulate the underground roadways and tunnels with coal dust, and more accurately evaluate the performance of surfactant-aided coal dust suppressions.
Introduction to the invention
As shown in Figure 1, the apparatus contains four parts, including a wind tunnel body made by iron frame and acrylic plastic, a dust generator system, a liquid spray system, and five metal stands.
The wind tunnel head is connected to a cyclone dust collector with a plastic pipe, which also acts as an exhaust fan of supplying airflow in the tunnel. The dust generator is installed at the end of the wind tunnel which generates coal dust with a specific concentration as purposed. The spray system is installed in the middle of the wind tunnel to spray the surfactant solution. Five metal stands are installed under the wind tunnel body. Two dust measure holes are drilled on the top of the wind tunnel before and after the surfactant-aided suppression spray section. The detailed sizes of the wind tunnel and the dust generator are shown in Figure land Figure 2.
Experiment procedures
This section illustrates the wind tunnel test procedure for evaluating surfactant-aided coal dust suppression.
a. Prepare an amount of specific coal dust sample in the dust generator based on the purpose of the experiment.
b. Prepare surfactant-aided suppression solution in the spray system with a specific surfactant and concentration based on the purpose of the experiment.
c. Connect the wind tunnel head to the cyclone dust collector and exhaust fan.
d. Set the exhaust fan to a specific airflow rate then open the exhaust fan until the airflow achieves a steady-state.
2019101391 13 Nov 2019
e. Open the dust generator until the airflow achieves steady-state.
f. Turn on the liquid spray system, makes the suppression droplet and coal dust particle contact each other.
g. After airflow keeps the steady-state, tubes connected with the TSI DustTrak TM II handheld aerosol monitors, are placed in the wind tunnel through the two dust measurement holes to measure the coal dust concentration before and after the liquid spray system.
Summary of the invention
This invention aims to provide a simple-design, cost-effective and safe operation apparatus for simulating the underground roadways and tunnels before and after the surfactant-aided suppression treatment and evaluating the performance of the surfactant-aided suppression. The significants of this invention are demonstrated as follows:
a. Compared to the traditional evaluation methods of the surfactant-aided coal dust suppression performance, this new apparatus considers fluid dynamics, and the contact and collision between coal particles and liquid droplets. By simulating a real underground gateway, this new apparatus makes the evaluation results more accurate.
b. This innovative apparatus is flexible in sizes and material for most parts, including the wind tunnel, the dust generator, the liquid spray system, and the stands. It is convenient to assemble in the laboratory and can be modified to the required sizes which depends on various test purposes.
Claims (9)
- (1) Blocking mesh (H: 0.5m, W: 0.5m)
- (2) Dust generator
- (3) Stands
- (4) Liquid spray system
- (5) Handheld aerosol monitor
- (6) Dust measurement hole (0:0.005m)
- (7) Wind tunnel heading (H: 0.5m, W: 0.5m)
- (8) Water residual
- (9) Wind tunnel body (H: 0.5m, W: 0.5m, L: 4.5m+lm+4.5m)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2019101391A AU2019101391A4 (en) | 2019-11-13 | 2019-11-13 | An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2019101391A AU2019101391A4 (en) | 2019-11-13 | 2019-11-13 | An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2019101391A4 true AU2019101391A4 (en) | 2020-01-02 |
Family
ID=68982466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019101391A Ceased AU2019101391A4 (en) | 2019-11-13 | 2019-11-13 | An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2019101391A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413709A (en) * | 2021-06-19 | 2021-09-21 | 沧州职业技术学院 | Automatic energy-conserving dust fall's in construction site controlling means |
-
2019
- 2019-11-13 AU AU2019101391A patent/AU2019101391A4/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413709A (en) * | 2021-06-19 | 2021-09-21 | 沧州职业技术学院 | Automatic energy-conserving dust fall's in construction site controlling means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |