CN112619456A - Smoke dust generating device with strip-shaped outlet - Google Patents
Smoke dust generating device with strip-shaped outlet Download PDFInfo
- Publication number
- CN112619456A CN112619456A CN202011425283.6A CN202011425283A CN112619456A CN 112619456 A CN112619456 A CN 112619456A CN 202011425283 A CN202011425283 A CN 202011425283A CN 112619456 A CN112619456 A CN 112619456A
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- CN
- China
- Prior art keywords
- air knife
- smoke
- outlet
- cavity
- smoke dust
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 83
- 239000000428 dust Substances 0.000 title claims abstract description 32
- 238000007664 blowing Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 239000004509 smoke generator Substances 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/30—Mixing gases with solids
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
- A63J5/00—Auxiliaries for producing special effects on stages, or in circuses or arenas
- A63J5/02—Arrangements for making stage effects; Auxiliary stage appliances
- A63J5/025—Devices for making mist or smoke effects, e.g. with liquid air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/30—Mixing gases with solids
- B01F23/32—Mixing gases with solids by introducing solids in gas volumes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Abstract
The invention discloses a smoke generating device with a strip-shaped outlet, which comprises an air knife and a plurality of material blowing devices, wherein quantitative dust is blown into a cavity of the air knife through a variable-frequency high-pressure fan and an automatic feeder in the material blowing devices, and the air speed and the smoke mass flow rate at the inlet of the air knife are monitored by means of a pipeline anemometer and a particle flowmeter. The invention solves the current situation that a long rectangular strip-shaped smoke dust outlet device is lacked in the current market, and can continuously transmit smoke dust with uniform wind speed and mass flow rate to a strip-shaped outlet by controlling the wind speed and the mass flow rate of the smoke dust at the wind knife inlet so as to establish a smoke dust environment with uniform concentration, thereby carrying out a related laser smoke dust interference resistance test.
Description
Technical Field
The invention relates to a laser detection environment simulation technology, in particular to a smoke dust generation device with a long strip-shaped outlet.
Background
The high-concentration smoke dust generated by smoke dust and other factors in the natural environment can influence the transmission characteristic of laser to a certain extent, so that the detection performance of the laser detection device is greatly reduced and even fails. Therefore, in order to understand the change rule of the relationship between the detection performance of the laser detection device and the smoke concentration, it is important to establish a smoke environment simulation test field in a limited space. And a smoke dust generating device is required to be used for establishing the smoke dust test field, smoke dust particles with uniform mass flow rate and speed are continuously provided for the test field through the smoke dust generating device, the particles can be continuously in a floating state in the test field, and the concentration in the smoke dust test field becomes uniform.
At present, researchers mostly adopt small experimental devices to research the transmission characteristics of laser in smoke environment, and a smoke particle extinction and scattering characteristic measuring device (201610999500.X) discloses a smoke particle extinction and scattering characteristic measuring device, wherein a smoke source is ignited in a smoke generating box, a smoke exhaust fan is turned on to obtain the smoke environment, obviously, the smoke concentration in a measuring end of the smoke particle is uneven, and the smoke concentration cannot be known; the Leizhiyong paper, transmission characteristic analysis and simulation of laser in smoke environment, establishes a square smoke test box with side length of 0.8m, and blows quantitative smoke particles through a smoke generator at one time and continuously blows air, and the air blowing mode cannot make the smoke concentration in the box uniform; xuchen and Shi A smoke dust test field is designed in the numerical simulation research of smoke dust concentration distribution rule in a limited space, and a uniform smoke dust plane can be obtained in the test field by blowing air and blowing air through material blowing openings which are long and long in strip shapes at the bottoms of two sides. At present, similar strip-shaped smoke generating devices are not available in the market, and the outlets of the common smoke generating devices are mostly circular and square, and the diameters of the smoke generating devices are smaller.
Disclosure of Invention
The invention mainly aims to provide a smoke generating device with a strip-shaped outlet, which solves the problems that the existing market lacks a strip-shaped smoke outlet device and the mass flow rate of smoke at the outlet is not uniform.
The technical solution for realizing the purpose of the invention is as follows: a smoke and dust generating device with a long strip-shaped outlet comprises an air knife and a plurality of material blowing devices, wherein the air knife comprises an outlet and a plurality of inlets, each inlet is connected with one material blowing device, the material blowing devices are used for generating and transmitting smoke and dust, and the smoke and dust enters a cavity of the air knife and then is discharged out of the air knife through the outlet. The invention can be used in a smoke environment simulation test field, and a smoke plane with uniform concentration is established to provide a laser detection device for carrying out related laser anti-smoke environment experiments.
Compared with the prior art, the invention has the remarkable advantages that:
(1) the device can continuously transmit smoke dust with uniform mass flow rate and speed to the strip-shaped outlet;
(2) the device can be used for establishing a smoke environment with uniform concentration in a smoke environment simulation test field, and the concentration is controllable;
(3) the device of the invention solves the market demand for a strip-shaped uniform feeding port (the length of the outlet is not less than 3m), and can also be used for agricultural seeding, stage smoke curtain construction and the like.
Drawings
FIG. 1 is a schematic structural view of a smoke generator with an elongated outlet according to the present invention.
Fig. 2 is a schematic view of the manner of opening the air knife of the smoke generator with a long strip-shaped outlet according to the present invention, wherein fig. (a) is a first manner, fig. (b) is a second manner, fig. (c) is a third manner, fig. (d) is a fourth manner, and fig. (e) is a fifth manner.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
With reference to fig. 1 and 2, the smoke generating device with a strip-shaped outlet comprises an air knife 1 and a plurality of blowing devices, wherein the air knife 1 comprises an outlet and a plurality of inlets, each inlet is connected with one blowing device, the blowing devices are used for generating and transmitting smoke, and the smoke enters a cavity of the air knife 1 and then is discharged out of the air knife 1 through the outlet.
The air knife 1 is in a long strip shape (large in length and width), the outlet of the air knife 1 is in a long strip pipe fitting, the air knife 1 is arranged along the length direction of the cavity and communicated with the cavity, the transition section of the cavity towards the outlet is in a contraction trend, and the outlet of the air knife 1 is as long as the cavity. The inlet of the air knife 1 is a round pipe, protrudes outwards and is used for being connected with a material blowing device, and a plurality of inlets are arranged on the air knife 1 at equal intervals and are respectively communicated with the cavity. The number of inlets of the air knife 1 can be increased according to actual application. The inlet of the air knife 1 is circular. According to a theoretical formula, the air output phi of the cavityoEqual to the intake air quantity phii：
Φo＝Φi
The following can be obtained:
vo*So＝n*vi*Si
wherein v isoThe wind speed and S at the outlet of the air knife 1oIs the sectional area v of the outlet of the air knife 1iThe wind speed and S at the inlet of the air knife 1iThe sectional area of the inlet of the air knife 1, n is the number of the inlets of the air knife 1, and the parameter So、SiN is known, so the wind speed v at the outlet of the air knife 1oOnly the wind speed v of the inlet of the air knife 1iAnd (4) correlating.
When the air knife 1 is longer, the wind speed v at the outlet of the air knife 1 can be improved by increasing the number n of the inlets of the air knife 1oThe length L of the air knife 1 can be adjusted according to the number n of inlets of the air knife 1, the length L is the thickness of the simulated smoke environment and is determined by the thickness of common smoke, and is not less than 3 m.
With reference to fig. 2, the inlet of the air knife 1 is provided with a plurality of ways, which must follow the principle of equal spacing:
in the first mode, the openings are arranged at equal intervals right opposite to the outlet.
In the second mode, the cavities are arranged right above (or right below) the cavity at equal intervals.
In the third mode, the left side and the right side of the air knife 1 are respectively provided with one air knife.
And the mode four is formed by combining the mode one and the mode three.
And the fifth mode is formed by combining the first mode and the second mode.
The following embodiments are described in a manner that the inlet of the air knife 1 is opened, but the embodiments are not limited to the first manner.
With reference to fig. 1, the smoke generator with a strip-shaped outlet according to the present invention includes an air knife 1 (with multiple inlets opened) and a plurality of blowing devices, where the air knife 1 includes an outlet and a plurality of inlets, each inlet is connected to one blowing device, and the blowing devices are configured to generate smoke, and the smoke enters the cavity of the air knife 1 and then is discharged out of the air knife 1 through the outlet.
The air knife 1 is in a long strip shape, the outlet of the air knife 1 is in a long strip-shaped pipe fitting, the air knife 1 is arranged along the length direction of the cavity of the air knife 1 and communicated with the cavity, the length of the outlet of the air knife 1 is equal to that of the cavity, and the transition section of the cavity towards the outlet is in a contraction trend. The inlet of the air knife 1 is a round pipe, protrudes outwards and is used for being connected with a material blowing device, a plurality of inlets are arranged on the air knife 1 at equal intervals and are respectively communicated with the cavity, and all the inlets are positioned on the same surface of the air knife 1.
The material blowing device comprises an automatic feeding machine 5, a Venturi three-way pipe 6 and a variable-frequency high-pressure fan 9, a first port of the Venturi three-way pipe 6 is connected with an inlet of an air knife 1 through a first transmission pipeline 4, a second port is connected with the variable-frequency high-pressure fan 9 through a second transmission pipeline 8, a third port is connected with the automatic feeding machine 5 through a third transmission pipeline 7, the variable-frequency high-pressure fan 9 generates high-pressure air flow, and under the action of the high-pressure air flow, smoke dust generated by the automatic feeding machine 5 continuously blows into the air knife 1.
The blowing device comprises a pipeline type anemometer 2 and a particle flow meter 3, wherein the pipeline type anemometer 2 and the particle flow meter 3 are arranged on a first transmission pipeline 4 and are used for measuring the wind speed and the smoke mass flow rate of the inlet of the air knife 1.
The smoke and dust generating device of rectangular shape export concrete realization function as follows: the maximum air quantity of the variable-frequency high-pressure fan 9 is 5000m3The rotating speed of the variable-frequency high-pressure fan 9 can be changed by adjusting a variable-frequency speed regulator on the fan, so that the output air quantity of the variable-frequency high-pressure fan 9 is changed, and then the air speed of airflow transmitted to the air knife 1 by the variable-frequency high-pressure fan 9 is changed; the Venturi three-way pipe 6 is Y-shaped, and three ports are respectively connected with an inlet of the air knife 1, a variable-frequency high-pressure fan 9 and the automatic feeder 5 through a first transmission pipeline 4, a second transmission pipeline 8 and a third transmission pipeline 7; the automatic feeder 5 has a wide weighing range: 0.5-100kg/h, the measurement precision is less than or equal to 0.1 percent, and the device can be started by one key after the mass flow rate parameter is set; the automatic feeder 5 interacts with the variable-frequency high-pressure fan 9, the smoke fed by the automatic feeder 5 is brought into the first transmission pipeline 4 by using the airflow transmitted by the variable-frequency high-pressure fan 9 in the Venturi three-way pipe 6, and the smoke is blown into the cavity of the air knife 1 by the continuous high-speed airflow, so that the smoke is blown out from the outlet of the air knife 1; the pipeline type anemometer 2 and the particle flowmeter 3 which are arranged on the first transmission pipeline 4 can measure and display the wind speed of airflow in the pipeline and the mass flow rate of smoke dust in real time; the first transmission pipeline 4, the second transmission pipeline 8 and the third transmission pipeline 7 are all round pipes with smooth inner walls, so that transmitted smoke dust is prevented from remaining on the inner walls of the pipelines, the transmission pipelines are connected with other equipment by using strong sealing glue and high-strength binding tapes, good air tightness is guaranteed, and transmission efficiency and precision are improved; the same wind speed and smoke mass flow rate are kept at a plurality of inlets of the air knife 1, smoke is continuously and stably blown into the cavity of the air knife 1, so that the outlet conditions of the air knife 1 with uniform wind speed and uniform smoke mass flow rate can be obtained, the air knife 1 can be used for establishing a smoke environment in a limited space, infrastructure guarantee is provided for the research of the transmission characteristics of laser in the smoke environment, and the air knife 1 can also be used for aspects such as agricultural seeding and stage smoke curtain construction.
Claims (6)
1. A smoke and dust generating device with rectangular shape export which characterized in that: the air knife comprises an air knife (1) and a plurality of material blowing devices, wherein the air knife (1) comprises an outlet and a plurality of inlets, each inlet is connected with one material blowing device, the material blowing devices are used for generating smoke dust, and the smoke dust is discharged out of the air knife (1) through the outlet after entering a cavity of the air knife (1).
2. The smoke generating apparatus with elongated outlet of claim 1 wherein: the air knife (1) is in a long strip shape, the outlet of the air knife (1) is a long strip-shaped pipe fitting, the air knife is arranged along the length direction of the cavity of the air knife (1) and communicated with the cavity, and the cavity tends to shrink towards the transition section of the outlet.
3. The smoke generating apparatus with elongated outlet of claim 2 wherein: the outlet of the air knife (1) is as long as the cavity.
4. The smoke generating apparatus with elongated outlet of claim 1 wherein: the inlet of the air knife (1) is a round pipe, protrudes outwards and is used for being connected with the material blowing device, and a plurality of inlets are arranged on the air knife (1) at equal intervals and are respectively communicated with the cavity.
5. The smoke generating apparatus with elongated outlet of claim 1 wherein: the material blowing device comprises an automatic feeding machine (5), a Venturi three-way pipe (6) and a variable-frequency high-pressure fan (9), a first port of the Venturi three-way pipe (6) is connected with an inlet of an air knife (1) through a first transmission pipeline (4), a second port is connected with the variable-frequency high-pressure fan (9) through a second transmission pipeline (8), a third port is connected with the automatic feeding machine (5) through a third transmission pipeline (7), the variable-frequency high-pressure fan (9) generates high-pressure air flow, and under the action of the high-pressure air flow, smoke dust generated by the automatic feeding machine (5) continuously blows into the air knife (1).
6. The smoke generating apparatus with elongated outlet of claim 5 wherein: the blowing device comprises a pipeline type anemometer (2) and a particle flow meter (3), wherein the pipeline type anemometer (2) and the particle flow meter (3) are installed on a first transmission pipeline (4) and are used for measuring the wind speed and the smoke dust mass flow rate entering the inlet of the air knife (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425283.6A CN112619456A (en) | 2020-12-08 | 2020-12-08 | Smoke dust generating device with strip-shaped outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425283.6A CN112619456A (en) | 2020-12-08 | 2020-12-08 | Smoke dust generating device with strip-shaped outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112619456A true CN112619456A (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011425283.6A Pending CN112619456A (en) | 2020-12-08 | 2020-12-08 | Smoke dust generating device with strip-shaped outlet |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007237A (en) * | 2006-01-26 | 2007-08-01 | 高化环保技术有限公司 | Cleaning apparatus of exhaust gas produced from semiconductor production process and method thereof |
| CN101776260A (en) * | 2010-03-05 | 2010-07-14 | 宁波怡诺能源科技有限公司 | Horizontal mobile grate gasifier |
| CN104307293A (en) * | 2014-11-07 | 2015-01-28 | 广西南宁华国环境科技有限公司 | Combined water-curtain dust-removing device |
| CN205925397U (en) * | 2016-07-15 | 2017-02-08 | 金华万得福日用品股份有限公司 | Centralized exhaust treatment device |
| CN206152552U (en) * | 2016-09-29 | 2017-05-10 | 东莞市涂芭新材料有限公司 | Paint produce machine shop dust central processing unit |
| CN109855421A (en) * | 2019-01-11 | 2019-06-07 | 丰镇市新太新材料科技有限公司 | A kind of energy saving rotary kiln of high carbon ferro-chrome production |
-
2020
- 2020-12-08 CN CN202011425283.6A patent/CN112619456A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007237A (en) * | 2006-01-26 | 2007-08-01 | 高化环保技术有限公司 | Cleaning apparatus of exhaust gas produced from semiconductor production process and method thereof |
| CN101776260A (en) * | 2010-03-05 | 2010-07-14 | 宁波怡诺能源科技有限公司 | Horizontal mobile grate gasifier |
| CN104307293A (en) * | 2014-11-07 | 2015-01-28 | 广西南宁华国环境科技有限公司 | Combined water-curtain dust-removing device |
| CN205925397U (en) * | 2016-07-15 | 2017-02-08 | 金华万得福日用品股份有限公司 | Centralized exhaust treatment device |
| CN206152552U (en) * | 2016-09-29 | 2017-05-10 | 东莞市涂芭新材料有限公司 | Paint produce machine shop dust central processing unit |
| CN109855421A (en) * | 2019-01-11 | 2019-06-07 | 丰镇市新太新材料科技有限公司 | A kind of energy saving rotary kiln of high carbon ferro-chrome production |
Non-Patent Citations (1)
| Title |
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| 徐陈又诗等: "有限空间的尘浓度分布规律数值模拟研究", 《兵工学报》 * |
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Application publication date: 20210409 |
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