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CN112619456A - Smoke dust generating device with strip-shaped outlet - Google Patents

Smoke dust generating device with strip-shaped outlet Download PDF

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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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China
Prior art keywords
air knife
smoke
outlet
dust
cavity
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CN202011425283.6A
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Inventor
查冰婷
李红霞
徐陈又诗
黄金波
袁海璐
包家倩
张合
陈璟宜
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Priority to CN202011425283.6A priority Critical patent/CN112619456A/en
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    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

本发明公开了一种具有长条形出口的烟尘发生装置，包括风刀和若干鼓料装置，通过鼓料装置中的变频高压风机和自动喂料器将定量粉尘吹入风刀的腔体内，并借助管道式风速计和颗粒流量计监测风刀入口处的风速和烟尘质量流率。本发明解决目前市场上缺乏长矩条形烟尘出口装置的现状，通过控制风刀入口风速和烟尘质量流率，可持续向长条形出口传输均匀风速和质量流率的烟尘，用于建立浓度均匀的烟尘环境，从而进行相关的激光抗烟尘干扰试验。

Figure 202011425283

The invention discloses a fume and dust generating device with an elongated outlet, which comprises an air knife and a plurality of blowing devices. A quantity of dust is blown into the cavity of the air knife through a variable frequency high-pressure blower and an automatic feeder in the blowing device. The wind speed and smoke mass flow rate at the inlet of the air knife are monitored with the aid of a duct anemometer and a particle flow meter. The present invention solves the current situation of the lack of long and rectangular bar-shaped smoke and dust outlet devices on the market. By controlling the wind speed at the inlet of the air knife and the smoke and dust mass flow rate, the smoke and dust with uniform wind speed and mass flow rate can be continuously transmitted to the long bar-shaped outlet, which is used to establish the concentration Uniform smoke and dust environment, so as to carry out the relevant laser smoke and dust interference test.

Figure 202011425283

Description

Smoke dust generating device with strip-shaped outlet
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)

1.一种具有长条形出口的烟尘发生装置，其特征在于：包括风刀（1）和若干鼓料装置，所述风刀（1）包括一个出口和若干入口，每个入口连接一个鼓料装置，鼓料装置用于产生烟尘，烟尘进入风刀（1）的腔体后，再经出口排出风刀（1）。1. A fume and dust generating device with an elongated outlet, characterized in that it comprises an air knife (1) and a plurality of drum material devices, the air knife (1) comprises an outlet and a plurality of inlets, and each inlet is connected to a drum The blowing device is used to generate soot, and after the soot enters the cavity of the air knife (1), it is discharged from the air knife (1) through the outlet. 2.根据权利要求1所述的具有长条形出口的烟尘发生装置，其特征在于：所述风刀（1）为长条形，其出口为长条形管件，沿风刀（1）腔体的长度方向设置并与腔体连通，腔体向出口过度段呈收缩趋势。2 . The smoke and dust generating device with an elongated outlet according to claim 1 , wherein the air knife ( 1 ) is elongated, and its outlet is an elongated pipe, along the cavity of the air knife ( 1 ). 3 . The length direction of the body is arranged and communicated with the cavity, and the transition from the cavity to the outlet tends to shrink. 3.根据权利要求2所述的具有长条形出口的烟尘发生装置，其特征在于：所述风刀（1）出口与腔体等长。3 . The smoke and dust generating device with an elongated outlet according to claim 2 , wherein the outlet of the air knife ( 1 ) is the same length as the cavity. 4 . 4.根据权利要求1所述的具有长条形出口的烟尘发生装置，其特征在于：所述风刀（1）的入口为圆管，向外凸出，用于连接鼓料装置，若干入口等间隔设置于风刀（1）上，并分别与腔体连通。4 . The smoke and dust generating device with a long outlet according to claim 1 , wherein the inlet of the air knife ( 1 ) is a round pipe, which protrudes outwards and is used for connecting the drum material device, and several inlets They are arranged on the air knife (1) at equal intervals and communicated with the cavity respectively. 5.根据权利要求1所述的具有长条形出口的烟尘发生装置，其特征在于：所述鼓料装置包括自动喂料机（5）、文氏三通管（6）、变频高压风机（9），文氏三通管（6）第一端口通过第一传输管道（4）与风刀（1）的入口连接，第二端口通过第二传输管道（8）与变频高压风机（9）连接，第三端口通过第三传输管道（7）与自动喂料机（5）连接，变频高压风机（9）产生高压气流，在高压气流作用下，自动喂料机（5）产生的烟尘持续鼓入风刀（1）。5. The fume and dust generating device with an elongated outlet according to claim 1, wherein the blowing device comprises an automatic feeder (5), a Venturi tee (6), a variable frequency high-pressure fan ( 9) The first port of the Venturi tee (6) is connected to the inlet of the air knife (1) through the first transmission pipe (4), and the second port is connected to the variable frequency high pressure fan (9) through the second transmission pipe (8) The third port is connected to the automatic feeder (5) through the third transmission pipe (7), and the variable frequency high-pressure fan (9) generates high-pressure airflow. Under the action of the high-pressure airflow, the smoke and dust generated by the automatic feeder (5) continue to Blow in the air knife (1). 6.根据权利要求5所述的具有长条形出口的烟尘发生装置，其特征在于：所述鼓料装置包括还包括管道式风速计（2）和颗粒流量计（3），管道式风速计（2）和颗粒流量计（3）安装在第一传输管道（4）上，用于测量进入风刀（1）入口的风速和烟尘质量流率。6 . The soot generating device with a long outlet according to claim 5 , wherein the drum material device further comprises a pipeline anemometer ( 2 ) and a particle flow meter ( 3 ). The pipeline anemometer (2) and a particle flow meter (3) are installed on the first transmission pipe (4) for measuring the wind speed and the mass flow rate of the smoke entering the inlet of the air knife (1).
CN202011425283.6A 2020-12-08 2020-12-08 Smoke dust generating device with strip-shaped outlet Pending CN112619456A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
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 Dust central processing device in paint production workshop
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 Dust central processing device in paint production workshop
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)

* Cited by examiner, † Cited by third party
Title
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