CN111629177A - Device for collecting material motion images and using method - Google Patents
Device for collecting material motion images and using method Download PDFInfo
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- CN111629177A CN111629177A CN202010351303.3A CN202010351303A CN111629177A CN 111629177 A CN111629177 A CN 111629177A CN 202010351303 A CN202010351303 A CN 202010351303A CN 111629177 A CN111629177 A CN 111629177A
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- 230000000007 visual effect Effects 0.000 claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 19
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- 239000007789 gas Substances 0.000 claims description 55
- 230000005674 electromagnetic induction Effects 0.000 claims description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 238000005485 electric heating Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 24
- 238000012800 visualization Methods 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000009827 uniform distribution Methods 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 239000000112 cooling gas Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
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- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000004321 preservation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/185—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source from a mobile camera, e.g. for remote control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
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- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a device for collecting material motion images and a using method. The device comprises a visual window arranged on the side wall of a hearth, and a power supply unit, a blanking control assembly, a camera and a signal control module which are arranged outside the hearth; the signal control module comprises a control panel A and a current conversion unit; the control panel a is used for controlling the switching of the current in the current conversion unit: before collection is started, when the first mass flow meter is set to have no flow rate, the control panel A is used for outputting a signal for converting alternating current output by the power supply unit into direct current, so that the camera is locked on the camera control assembly; when collection is started, the first mass flow meter is set to be started, and the control panel A is used for outputting a signal for converting alternating current transmitted by the power supply unit into zero current, so that the camera falls freely. The invention can realize that the material in the hearth and the camera fall synchronously and simultaneously, and further can continuously and completely acquire the whole process image of the movement of the solid particles in the hearth.
Description
Technical Field
The invention relates to a device for collecting material motion images and a using method thereof.
Background
In order to study the pyrolysis, gasification and combustion processes of coal, gas, biomass, etc. in an intensive manner, it is often necessary to study the reaction kinetics of the movement of the material in the hearth. The image is used as an important way for processing and analyzing the reaction process of the material particles, and important data such as particle morphology, temperature, reaction process spectrum and the like can be obtained. However, the reactors (such as tube furnaces and drop tube furnaces) in the prior art do not realize actual monitoring, and the reaction in the hearth cannot be detected accurately and effectively. For example, chinese patent document CN109012555A discloses a drop tube furnace which is also not equipped with a visual detection system.
At present, no device capable of monitoring the image data of the whole process of material movement in a hearth in real time exists in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem that no device capable of completely and continuously acquiring image data of the whole process of the movement of a material in a hearth exists in the prior art, and provides a device for acquiring a material moving image and a using method thereof. The image acquisition device can realize synchronous and simultaneous falling of the materials in the hearth and the camera, and further can continuously and completely acquire the whole process image of the movement of solid particles such as coal, biomass and the like in the hearth.
The invention solves the technical problems through the following technical scheme.
The invention provides a device for collecting material motion images, which comprises a visual window arranged on the side wall of a hearth, and a power supply unit, a blanking control assembly, a camera and a signal control module which are arranged outside the hearth;
one port of the blanking control assembly and one port of the signal control module are connected in parallel to the power supply unit, the other port of the blanking control assembly is connected with the hearth through a material pipe, and the other port of the signal control module is connected with the camera control assembly through a lead; the camera is arranged on the camera control assembly, and the camera control assembly and the visual window are vertically arranged oppositely;
the blanking control assembly comprises a first mass flowmeter and a hopper assembly which are sequentially connected, and the first mass flowmeter is used for controlling blanking of materials in the hopper assembly;
the signal control module comprises a control panel A and a current conversion unit which are connected in sequence; the control panel A is used for controlling the switching of the current in the current conversion unit:
before the material moving image is collected, when the first mass flow meter is set to be in a no-flow-rate state, the control panel A is used for outputting a signal for converting alternating current output by the power supply unit into direct current and transmitting the signal to the current conversion unit, so that the camera control assembly is used for generating resistance greater than or equal to the gravity of the camera, the camera is locked on the camera control assembly, and the camera and the top end of the visualization window are positioned on the same horizontal plane; when the material moving image is collected, and the first mass flow meter is set to be in an open state, the control panel A is used for outputting a signal for converting alternating current transmitted by the power supply unit into zero current and transmitting the signal to the current conversion unit, so that the camera control assembly does not generate force for preventing the camera from falling, and the camera can freely fall.
At present, no device for continuously and completely acquiring the whole process image of the movement of the solid particles in the hearth in real time is reported. Usually, only a visual window is arranged on the side wall of the hearth, and a camera is directly adopted to collect the moving image of the solid particles at a certain time point. However, the whole process of the movement of the solid particles in the time period from entering the furnace to leaving the furnace cannot be collected, so that the reaction kinetics characteristics of the solid particles cannot be analyzed more effectively and comprehensively. The inventor designs the device for collecting the material motion image through multiple experiments, and the technical scheme of the invention combines the principle of the electrical field and the free falling body principle of the physical field and combines other necessary structures and the like, so that the image collection of the whole process of the solid particle motion in the hearth can be realized.
In the present invention, the first mass flow meter may be conventional in the art, and the first mass flow meter is generally provided with a solenoid valve, and the solenoid valve is used for controlling the material blanking in the hopper assembly and the flow rate of the material blanking.
As known to those skilled in the art from the apparatus, the first mass flow meter further generally comprises a solenoid valve and a control panel B, wherein the solenoid valve is used for controlling the on-off of the first mass flow meter and the flow rate of the blanking of the hopper assembly; the control panel B is used for program setting of the first mass flow meter, and for example, the opening and closing of a solenoid valve on the first mass flow meter and the timing of the opening and closing can be controlled by a set program. When the electromagnetic valve is closed, the first mass flow meter is in a no-flow state, no material falls in the hearth, when the electromagnetic valve is opened, the first mass flow meter is in an open state, and the material in the hopper assembly begins to fall into the hearth. Those skilled in the art will appreciate that the control panel B can be configured to close the solenoid valve after a specified time after the solenoid valve on the first mass flow meter is opened. For example, the control panel B is arranged to close the electromagnetic valve at an interval of 2s after the electromagnetic valve is opened, and stop the blanking of the materials in the hearth.
In the present invention, as known to those skilled in the art from the apparatus, the control panel a may be a control panel conventional in the art, and the current converting unit may be instructed by a setting program to perform the conversion of the alternating current at a specified time.
In the present invention, as known to those skilled in the art from the above-mentioned apparatus, the current converting unit may be a current converting apparatus conventional in the art, and may be used to convert an alternating current into a direct current, and may also be used to convert an alternating current into a zero current.
In the present invention, the shape of the hearth is generally cylindrical, as known to those skilled in the art.
Wherein, when the hearth is a cylinder, the inner diameter of the hearth can be 80mm, for example; the outer diameter of the hearth can be 150mm, for example; the height of the hearth may be 2000mm, for example.
In the invention, the material of the hearth can be conventional in the field, and is preferably silicon carbide.
In the present invention, the furnace may be a furnace of a reactor conventional in the art, and the reactor preferably includes a drop tube furnace or a tube furnace.
When the reactor is a drop tube furnace, the hopper assembly preferably comprises a hopper and an ultrasonic vibration screen. The hopper is used for feeding solid particles.
When the reactor is a burette furnace, as known to those skilled in the art, the burette furnace generally further comprises a main control cabinet, a gas feed assembly, a heating assembly, a cooling assembly, and a material outlet assembly.
The main control cabinet can be a conventional device in the field, and is generally used for placing each control system in the device, so that the control of each control system is convenient. In the present invention, each of the control systems includes the power supply unit, the first mass flow meter, and the control panel a.
The gas feed assembly may be of conventional design in the art and preferably comprises a second mass flow meter, a gas storage tank, a gas splitter and a gas distribution flange; the second mass flow meter is used for controlling the feeding time and flow of the gas entering the hearth; the gas storage tank, the second mass flow meter, the gas splitter and one end of the gas flow uniform distribution flange are sequentially connected in series. The other end of the gas flow uniform distribution flange is connected with the top end of the hearth and used for uniformly conveying the gas into the hearth.
The heating assembly may be of a conventional configuration in the art and preferably includes a thyristor temperature regulator for controlling the temperature within the furnace, an electrical heating rod, an electrical heating cable anode and an electrical heating cable cathode. The electric heating rod is generally positioned on the outer wall of the hearth; one end of the anode of the electric heating cable, the electric heating rod and one end of the cathode of the electric heating cable are connected in series; the other end of the positive pole of the electric heating cable is connected with the controllable silicon temperature regulator.
The cooling component can be arranged conventionally in the field, and preferably comprises a circulating water pump, a water-cooling jacket water inlet pipeline and a water-cooling jacket water outlet pipeline; the cooling assembly is used for cooling gas, solid or liquid led out from the material outlet end so as to protect the material outlet; the water-cooling jacket is connected with the circulating water pump, and the circulating water pump is used for controlling the opening and closing of the water-cooling jacket so as to control the flowing and the stillness of cooling water.
The material outlet assembly may be of conventional arrangement in the art and preferably comprises a gas outlet, a solid-liquid outlet and a bottom collector. The bottom collector is used for collecting the solid and/or liquid led out from the solid-liquid discharge hole.
When the drop tube furnace comprises a main control cabinet, the second mass flow meter, the thyristor temperature regulator and the circulating water pump are preferably positioned in the main control cabinet.
According to the invention, the shape of the visual window can be reasonably set according to the movement path of the required material, for example, the visual window is an arc shape consistent with the shape of the hearth.
In the invention, the visual window and the side wall of the hearth are preferably connected in a chimeric way. The embedded connection is that, for example, a groove is arranged at the joint of the visual window in the side wall of the hearth, the groove is matched with the thickness of the visual window, and the visual window can be embedded into the groove.
Wherein, an asbestos gasket is preferably arranged between the visualization window and the hearth side wall.
The asbestos gasket is preferably made of a soft material. The asbestos gasket is set to be made of soft materials, so that the asbestos gasket can play a role in buffering when the quartz glass and the hearth are thermally expanded in the high-temperature work of the hearth, and the damage caused by the difference of thermal expansion rates of the two hearths and the quartz glass is avoided.
In the present invention, the height of the visualization window is preferably equal to the height of the furnace. For example, when the height of the hearth is 2000mm, the height of the visualization window is 2000 mm.
In the present invention, the width of the visualization window may be, for example, 40 mm.
In the present invention, the thickness of the visualization window may be 4mm, for example.
In the present invention, according to the image capturing device, the material of the visualization window is preferably a transparent material, such as quartz glass.
In the invention, the camera used for image acquisition of the material in the hearth can be a camera conventional in the field, and can be a high-speed camera, for example. The resolution of the high speed camera may be 2000x2000, 1200fps, for example. The high speed camera preferably also includes a 300mm fixed angle lens.
In the present invention, the camera control assembly preferably includes a decelerator, a horizontal shaft, and a guide rail;
the speed reducer comprises a friction plate, an electromagnetic induction coil assembly and an iron-based friction block. The friction plate is provided with a strip-shaped opening which is used as a track for the horizontal shaft to move up and down; the electromagnetic induction coil assembly comprises a ceramic friction block A and an electromagnetic induction coil wound on the ceramic friction block A;
one end of the horizontal shaft is sequentially arranged in the iron-based friction block, the strip-shaped opening and the electromagnetic induction coil assembly in a penetrating manner; the other end of the horizontal shaft is positioned on the track of the guide rail and moves up and down along the track of the guide rail, and the parts of the other end of the horizontal shaft, which are in direct contact with the track of the guide rail, are respectively smooth surfaces; when the electromagnetic induction coil assembly is positioned at the top end of the friction plate and direct current is conducted, the electromagnetic induction coil assembly and the iron-based friction block are mutually attracted, friction force which is larger than or equal to the gravity of the camera is generated between the electromagnetic induction coil assembly and the friction plate, the horizontal shaft is static, when the electromagnetic induction coil assembly is free of current, attraction force is not generated between the electromagnetic induction coil assembly and the iron-based friction block, no friction force is generated between the electromagnetic induction coil assembly and the friction plate, and the horizontal shaft falls;
a camera base for fixing a camera is arranged on the horizontal shaft, and the camera base is arranged opposite to the visual window, so that particles in the hearth fall into the visual field of the camera; when the horizontal shaft falls, the camera fixed on the horizontal shaft also falls at the same time.
According to the device, the top end of the strip-shaped opening and the top end of the visualization window are on the same horizontal plane. The length of the strip-shaped opening is preferably greater than the length of the visualization window.
When the length of the strip-shaped opening is larger than that of the visualization window, the strip-shaped opening is preferably further provided with a deceleration area, and the deceleration area is used for decelerating the camera when the camera falls to the same horizontal plane with the bottom of the hearth, so that the camera is prevented from being decelerated due to strong impact; the top end of the speed reduction area and the bottom end of the hearth are on the same horizontal plane. When the camera falls to the top end of the deceleration zone, the control panel A outputs a signal for converting the alternating current into direct current A and transmits the signal to the current conversion unit, and the resistance generated by the camera control assembly is larger than the gravity of the camera, so that the camera falls down in a deceleration mode until the camera stops.
And a ceramic friction block B is preferably arranged on the horizontal shaft between the strip-shaped opening and the electromagnetic induction coil assembly in a penetrating manner. According to the device, the width of the ceramic friction block B is usually smaller than the length between the electromagnetic induction coil assembly and the strip-shaped opening, and the ceramic friction block B is not wound by a coil and can freely move horizontally between the electromagnetic induction coil assembly and the strip-shaped opening. When the electromagnetic induction coil assembly is electrified with direct current to enable the electromagnetic induction coil assembly and the iron-based friction block to be mutually attracted, the ceramic friction block B is positioned between the electromagnetic induction coil assembly and the iron-based friction block, so that the friction force generated between the electromagnetic induction coil assembly and the friction plate can be increased.
Wherein, one end of horizontal axis is equipped with the stopper better for prevent that ceramic clutch blocks A from dropping.
In the present invention, as known to those skilled in the art, when the material falls from the other port of the blanking control assembly to the space between the furnace chambers and passes through the material pipe, time is consumed, and at this time, a signal delay needs to be set on the control panel a, so that the current conversion unit converts the ac power to the dc power at the time point when the material is blanked from the furnace chambers. For example, the control panel a is set to convert alternating current to direct current at an interval of 3s after the solenoid valve is opened.
The invention also provides a using method of the device for collecting the material motion image, which comprises the following steps: before the device for collecting the material motion image, the first mass flowmeter is closed, and meanwhile, the control panel A is opened to output a signal for converting the alternating current output by the power supply unit into direct current; when the material moving image begins to be collected, the first mass flow meter is started, and meanwhile, the control panel A is started to output a signal for converting alternating current transmitted by the power supply unit into zero current.
In the invention, when the device for collecting the material motion image comprises a decelerating region and the material falls to the bottom of the hearth, the control panel A is started to output a signal for converting the alternating current transmitted by the power supply unit into the direct current A. When the current of the direct current A flows into the speed reducer, the speed reducer generates resistance larger than the gravity of the camera, and the camera falls down in a speed reducing mode.
In the present invention, as known to those skilled in the art, the power output by the power supply unit generally refers to 220V and 50Hz alternating current.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The reagents and starting materials used in the present invention are commercially available.
The positive progress effects of the invention are as follows: the device provided by the invention realizes simultaneous and synchronous falling of the material and the camera, so that the whole process image data of the movement of the material particles in the hearth can be completely and continuously obtained, and important information such as particle morphology, temperature, reaction process spectrum and the like can be further obtained by analyzing and researching the data, so that the device has important significance for experimental research based on the burette furnace.
Drawings
Fig. 1 is a flowchart of the operation of the apparatus for acquiring a material motion image in embodiment 1.
Fig. 2 is a perspective view of the structure of the device for collecting a material moving image according to embodiment 1.
Fig. 3 is a perspective view of a camera control assembly according to embodiment 1.
Description of reference numerals: the device comprises a main control cabinet 1, a hopper assembly 2, a gas storage tank 3, a gas splitter 4, a material pipe 5, an airflow uniform distribution flange 6, a furnace hearth 7 of a burette furnace, a visual window 8, an electric heating rod 9, an electric heating cable anode 10, an electric heating cable cathode 11, a water cooling jacket 12, a water cooling jacket water inlet pipeline 13, a water cooling jacket water outlet pipeline 14, a gas outlet 15, a bottom collector 16, a camera 17, a guide rail 18, a speed reducer 19, a horizontal shaft 20, an electromagnetic induction coil assembly 21, an iron-based friction block 22, a camera base 23, a strip-shaped opening 24 and a friction plate 25.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.
Example 1
1. Fig. 1 is a flowchart of the operation of the apparatus for collecting material motion images in this embodiment. Fig. 2 is a perspective view of the structure of the device for collecting material motion images according to the present embodiment. Fig. 3 is a perspective view of the camera control assembly according to the present embodiment. The device in the embodiment comprises a visual window 8 arranged on the side wall of a hearth 7 of the burette furnace, and a power supply unit, a blanking control assembly, a camera and a signal control module which are arranged outside the hearth 7 of the burette furnace. The power supply unit provides 220V and 50Hz alternating current. One port of the blanking control assembly and one port of the signal control module are connected in parallel to the power supply unit, the other port of the blanking control assembly is connected with a hearth 7 of the burette furnace through a material pipe 5, the other port of the signal control module is connected with the camera control assembly through a conducting wire, and the camera is a high-speed camera with the resolution of 2000x2000 and 1200fps and is matched with a 300mm fixed-angle lens. The camera is arranged on the camera control assembly, and the camera control assembly and the visual window 8 are vertically arranged oppositely. Before the material moving image is collected, when the first mass flow meter is set to be in a no-flow-rate state, the control panel A is used for outputting a signal for converting alternating current output by the power supply unit into direct current and transmitting the signal to the current conversion unit, so that the camera control assembly generates resistance larger than the gravity of the camera 17, the camera 17 is locked on the camera control assembly, and the top ends of the camera 17 and the visualization window 8 are positioned on the same horizontal plane; when beginning to gather the material motion image, when first mass flowmeter established to the on-state, control panel A was used for the output with the signal of alternating current conversion zero current that power supply unit transmitted out to the transmission unit of electric current, and gives the electric current conversion unit, thereby makes camera control assembly not produce the power that prevents camera 17 whereabouts, and then makes camera 17 whereabouts.
The blanking control assembly comprises a first mass flow meter and a hopper assembly 2 which are sequentially connected, wherein the highest flow rate of the first mass flow meter is 225L/min, the first mass flow meter is used for controlling blanking of materials in the hopper assembly 2, the materials are carbon particles with the average particle size of 80 mu m, and an electromagnetic valve and a control panel B are further arranged on the first mass flow meter; the hopper assembly 2 comprises a hopper and an ultrasonic vibration screen, and the hopper is used for feeding materials. The electromagnetic valve is used for controlling the opening and closing of the first mass flow meter and the flow rate of material blanking in the hopper assembly 2, and the control panel B is used for controlling the opening and closing of the electromagnetic valve on the first mass flow meter and the opening and closing time through a set program. When the electromagnetic valve is closed, the first mass flowmeter is in a no-flow state, no material falls in the hearth 7 of the burette furnace, when the electromagnetic valve is opened, the first mass flowmeter is in an open state, and the material in the hopper assembly 2 begins to fall into the hearth 7 of the burette furnace.
The signal control module comprises a control panel A and a current conversion unit which are sequentially connected, and the control panel A is used for controlling the switching of the current in the current conversion unit and the time of the current switching. The current conversion unit is used for converting alternating current into direct current and converting the alternating current into zero current.
Wherein, the furnace 7 of the burette furnace is a cylinder, and the burette furnace also comprises a gas feeding component, a heating component, a cooling component, a material outlet component and a main control cabinet 1. Wherein, the gas feeding subassembly includes second mass flow meter, gas storage tank 3, gas shunt 4 and gas flow equipartition flange 6. The second mass flow meter is used for controlling the feeding time and flow of the gas entering the hearth 7 of the drop tube furnace; and one ends of the gas storage tank 3, the second mass flow meter, the gas splitter 4 and the gas flow uniform distribution flange 6 are sequentially connected in series. The other end of the gas flow uniform distribution flange 6 is connected with the top end of a hearth 7 of the drop tube furnace and used for conveying gas into the hearth. The gas storage tank 3 is a 200L capacity gas cylinder, and can provide a single component gas or a mixed gas composed of multiple gases, in this embodiment, the mixed gas is CO and H2The mixed gas of (1). The gas splitter 4 can evenly distribute gas to 6 branch pipes and flow into a hearth 7 of the dropping-pipe furnace through the gas flow uniform distribution flange 6 so as to control the atmosphere inside the hearth. The heating component comprises a silicon controlled temperature regulator, an electric heating rod 9, an electric heating cable anode 10 and an electric heating cable cathode 11, and the silicon controlled temperature regulator is used for controlling the temperature in the hearth 7 of the dropping tube furnace. The electric heating rod 9 is positioned on the outer wall of the hearth 7 of the dropping tube furnace; one end of the positive electrode 10 of the electric heating cable, one end of the electric heating rod 9 and one end of the negative electrode 11 of the electric heating cable are connected in series; the other end of the anode 10 of the electric heating cable is connected with a thyristor temperature regulator. The electric heating rod 9 is connected with the main control cabinet 1 through an electric heating cable anode 10 and an electric heating cable cathode 11, the electric heating rod generates heat under the action of current to heat the hearth 7 of the dropping tube furnace to reach the required hearth temperature, the temperature rise rate can be adjusted through a program, and the highest temperature of the heating furnace can reach 1500 ℃; a fireproof surface is arranged between the hearth 7 of the burette furnace and the electric heating rod 9 for heat preservation and heat insulation, and a stainless steel shell and a support are arranged on the outermost layer to fix and support the hearth. The cooling component comprises a circulating water pump, a water-cooling jacket 12 and water coolingA jacket water inlet pipeline 13 and a water-cooling jacket water outlet pipeline 14; the cooling assembly is used for cooling gas, solid or liquid led out from the material outlet end so as to protect the material outlet; the water-cooling jacket 12 is connected with a circulating water pump, and the circulating water pump is used for controlling the opening and closing of the water-cooling jacket 12, so as to control the flowing and the rest of the cooling water and the flow rate of the cooling water. The temperature difference of the inlet water and the outlet water of the cooling water is less than 5 ℃, and the temperature of the gas at the outlet of the hearth can be reduced to be below 60 ℃. The material outlet assembly comprises a gas outlet 15, a solid-liquid discharge port and a bottom collector 16. The bottom collector 16 is used for collecting the solid and/or liquid discharged from the solid-liquid discharge port. The gas outlet 15 is connected with a mass spectrometer for analyzing the composition of outlet gas, and the discharged gas is discharged after being processed by a gas processing device. The power supply unit, the first mass flow meter, the control panel A, the second mass flow meter, the silicon controlled temperature regulator and the circulating water pump are all located in the main control cabinet 1.
The inner diameter of the hearth 7 of the burette furnace is 80mm, the outer diameter is 150mm, the height is 2000mm, and the hearth is made of silicon carbide. The side wall of the hearth is provided with a visual window 8 with the height of 2000mm, the width of 40mm and the thickness of 4mm from top to bottom along the axial direction, and the visual window 8 is made of quartz glass. The connecting part of the hearth side wall and the visual window 8 is provided with a groove which is matched with the thickness of the visual window 8, and the visual window 8 can be embedded into the groove. An asbestos gasket made of soft material is arranged between the visual window 8 and the side wall of the furnace chamber 7 of the dropping-tube furnace.
Wherein the camera control assembly comprises a speed reducer 19, a horizontal shaft 20, a guide rail 18 and a camera 17. The speed reducer 19 comprises a friction plate 25, an electromagnetic induction coil assembly 21 and an iron-based friction block 22, wherein a strip-shaped opening 24 is formed in the friction plate 25, the top end of the strip-shaped opening 24 and the top end of the visualization window 8 are on the same horizontal plane, the length of the strip-shaped opening 24 is larger than that of the visualization window 8, and the strip-shaped opening 24 is used as a track for the horizontal shaft 20 to move up and down; the electromagnetic induction coil assembly 21 comprises a ceramic friction block A and an electromagnetic induction coil wound on the ceramic friction block A; one end of the horizontal shaft 20 is sequentially arranged through the iron-based friction block 22, the strip-shaped opening 24 and the electromagnetic induction coil assembly 21 in a penetrating manner; on the horizontal shaft, a ceramic friction block B is further arranged between the strip-shaped opening 24 and the electromagnetic induction coil assembly 21 in a penetrating manner, the width of the ceramic friction block B is usually smaller than the length between the electromagnetic induction coil assembly and the strip-shaped opening, and the ceramic friction block B is wound without a coil and can horizontally and freely move between the electromagnetic induction coil assembly and the strip-shaped opening. The other end of the horizontal shaft 20 is positioned on the track of the guide rail 18 and moves up and down along the track of the guide rail 18, and the parts of the other end of the horizontal shaft 20, which are in direct contact with the track of the guide rail 18, are respectively smooth surfaces; when the electromagnetic induction coil assembly 21 is positioned at the top end of the friction plate 25 and direct current is conducted, the electromagnetic induction coil assembly 21 and the iron-based friction block 22 are mutually attracted, friction force which is larger than or equal to the gravity of the camera is generated between the electromagnetic induction coil assembly 21 and the friction plate 25, the horizontal shaft is static, when no current exists in the electromagnetic induction coil assembly 21, attraction force is not generated between the electromagnetic induction coil assembly 21 and the iron-based friction block 22, no friction force is generated between the electromagnetic induction coil assembly 21 and the friction plate 25, and the horizontal shaft 20 falls; a camera base 23 for fixing a camera is arranged on the horizontal shaft 20, and the camera base 23 is arranged opposite to the visual window 8, so that particles in the hearth fall into the visual field of the camera 17; when the horizontal shaft 20 falls, the camera 17 fixed to the horizontal shaft 20 also falls at the same time. The friction plate 25 is also provided with a deceleration zone which is used for decelerating the camera 17 when the camera falls to the same horizontal plane with the bottom of the hearth, so that the high-speed camera is prevented from being decelerated due to strong impact; the speed reduction area is positioned on the strip-shaped opening 24, and the top end of the speed reduction area and the bottom end of the hearth 7 of the dropping tube furnace are positioned on the same horizontal plane. When the camera 17 falls to the top of the deceleration zone, the control panel a outputs a signal converting the alternating current into the direct current and transmits the signal to the current conversion unit, and the camera control component generates a resistance greater than the gravity of the camera 17, so that the camera 17 falls down until stopping. One end of the horizontal shaft 20 is further provided with a limiting block for preventing the ceramic friction block a from falling.
The device in the embodiment realizes simultaneous and synchronous falling of the material and the camera, so that the whole process image data of the movement of the material particles in the hearth can be completely and continuously obtained, and important information such as particle morphology, temperature, reaction process spectrum and the like can be further obtained by analyzing and researching the data, so that the device has important significance for experimental research based on the burette furnace.
2. The using method of the device for collecting the material moving images comprises the steps that before the device for collecting the material moving images, the first mass flow meter is closed, and meanwhile, the control panel A is opened to output signals for converting alternating current output by the power supply unit into direct current; when the material motion image begins to be collected, the first mass flow meter is started, and meanwhile, the control panel A is started to output a signal for converting alternating current transmitted by the power supply unit into zero current. When the materials in the hearth 7 of the burette furnace fall to the bottom of the hearth, the control panel A is started to output a signal for converting the alternating current transmitted by the power supply unit into direct current, and when the direct current flows into the speed reducer, the speed reducer can generate resistance larger than the gravity of the camera, so that the camera falls down in a speed reducing way.
Claims (10)
1. A device for collecting material motion images is characterized by comprising a visual window arranged on the side wall of a hearth, and a power supply unit, a blanking control assembly, a camera and a signal control module which are arranged outside the hearth;
one port of the blanking control assembly and one port of the signal control module are connected in parallel to the power supply unit, the other port of the blanking control assembly is connected with the hearth through a material pipe, and the other port of the signal control module is connected with the camera control assembly through a lead; the camera is arranged on the camera control assembly, and the camera control assembly and the visual window are vertically arranged oppositely;
the blanking control assembly comprises a first mass flowmeter and a hopper assembly which are sequentially connected, and the first mass flowmeter is used for controlling blanking of materials in the hopper assembly;
the signal control module comprises a control panel A and a current conversion unit which are connected in sequence; the control panel A is used for controlling the switching of the current in the current conversion unit:
before the material moving image is collected, when the first mass flow meter is set to be in a no-flow-rate state, the control panel A is used for outputting a signal for converting alternating current output by the power supply unit into direct current and transmitting the signal to the current conversion unit, so that the camera control assembly is used for generating resistance greater than or equal to the gravity of the camera, the camera is locked on the camera control assembly, and the camera and the top end of the visualization window are positioned on the same horizontal plane; when the material moving image is collected, and the first mass flow meter is set to be in an open state, the control panel A is used for outputting a signal for converting alternating current transmitted by the power supply unit into zero current and transmitting the signal to the current conversion unit, so that the camera control assembly does not generate force for preventing the camera from falling, and the camera can freely fall.
2. The apparatus of claim 1, wherein said first mass flow meter comprises a solenoid valve and a control panel B; the electromagnetic valve is used for controlling the switch of the first mass flow meter and the flow of the material in the hopper assembly during blanking; the control panel B is used for program setting of the first mass flow meter;
and/or the control panel A is used for setting a program to instruct the current conversion unit to convert the alternating current at a specified time.
3. The apparatus of claim 1, wherein the furnace is a reactor furnace; wherein the reactor is preferably a drop tube furnace or a tube furnace.
4. The apparatus of claim 3, wherein the burette furnace comprises a main control cabinet, a gas feed assembly, a heating assembly, a cooling assembly, and a material outlet assembly;
wherein, the main control cabinet is preferably used for placing each control system in the device, and each control system comprises the power supply unit, the first mass flow meter and the control panel A;
wherein the gas feed assembly preferably comprises a second mass flow meter, a gas storage tank, a gas splitter and a gas flow distribution flange; the second mass flow meter is used for controlling the feeding time and flow of the gas entering the hearth; one ends of the gas storage tank, the second mass flow meter, the gas splitter and the gas flow uniform distribution flange are sequentially connected in series; the other end of the gas flow uniform distribution flange is connected with the top end of the hearth and used for uniformly conveying the gas into the hearth;
wherein the heating assembly preferably comprises a thyristor temperature regulator, an electric heating rod, an electric heating cable anode and an electric heating cable cathode; the silicon controlled rectifier temperature regulator is used for controlling the temperature in the hearth, and the electric heating rod is positioned on the outer wall of the hearth; one end of the anode of the electric heating cable, the electric heating rod and one end of the cathode of the electric heating cable are connected in series; the other end of the anode of the electric heating cable is connected with the controllable silicon temperature regulator;
wherein, the cooling component preferably comprises a circulating water pump, a water-cooling jacket water inlet pipeline and a water-cooling jacket water outlet pipeline; the cooling assembly is used for cooling gas, solid or liquid led out from the material outlet end so as to protect the material outlet; the water-cooling jacket is connected with the circulating water pump, and the circulating water pump is used for controlling the opening and closing of the water-cooling jacket so as to control the flowing and the standing of cooling water;
wherein the material outlet assembly preferably comprises a gas outlet, a solid-liquid discharge port and a bottom collector; the bottom collector is used for collecting the solid and/or liquid led out from the solid-liquid discharge hole.
5. The apparatus according to claim 1, wherein the visualization window is connected with the furnace sidewall in a manner of a jogged connection;
and/or the material of the visual window is quartz glass;
and/or an asbestos gasket is arranged between the visualization window and the side wall of the hearth.
6. The apparatus of claim 1, wherein said camera control assembly comprises a speed reducer, a horizontal shaft, and a guide rail; the speed reducer comprises a friction plate, an electromagnetic induction coil assembly and an iron-based friction block; the friction plate is provided with a strip-shaped opening which is used as a track for the horizontal shaft to move up and down; the electromagnetic induction coil assembly comprises a ceramic friction block A and an electromagnetic induction coil wound on the ceramic friction block A;
one end of the horizontal shaft is sequentially arranged in the iron-based friction block, the strip-shaped opening and the electromagnetic induction coil assembly in a penetrating manner; the other end of the horizontal shaft is positioned on the track of the guide rail and moves up and down along the track of the guide rail, and the parts of the other end of the horizontal shaft, which are in direct contact with the track of the guide rail, are respectively smooth surfaces; when the electromagnetic coil assembly is positioned at the top end of the friction plate and is electrified with direct current, the electromagnetic induction coil assembly and the iron-based friction block are mutually attracted, friction force which is larger than or equal to the gravity of the camera is generated between the electromagnetic coil assembly and the friction plate, the horizontal shaft is static, when the electromagnetic coil assembly is free of current, attraction force is not generated between the electromagnetic induction coil assembly and the iron-based friction block, no friction force is generated between the electromagnetic coil assembly and the friction plate, and the horizontal shaft falls;
a camera base for fixing a camera is arranged on the horizontal shaft, and the camera base is arranged opposite to the visual window, so that particles in the hearth fall into the visual field of the camera; when the horizontal shaft falls, the camera fixed on the horizontal shaft also falls at the same time.
7. The apparatus of claim 6, wherein the top end of the strip-shaped opening is at the same level as the top end of the visualization window;
and/or the length of the strip-shaped opening is greater than that of the visualization window;
and/or a ceramic friction block B is arranged on the horizontal shaft between the strip-shaped opening and the electromagnetic induction coil assembly in a penetrating manner.
8. The device of claim 7, wherein when the length of the strip-shaped opening is larger than that of the visualization window, the strip-shaped opening is further provided with a deceleration zone for decelerating the camera when the camera falls to the same horizontal plane as the bottom of the hearth; when the camera falls to the top end of the deceleration zone, the control panel A outputs a signal for converting the alternating current into direct current A and transmits the signal to the current conversion unit, and the resistance generated by the camera control assembly is larger than the gravity of the camera, so that the camera falls down in a deceleration mode until the camera stops.
9. A method of using the device according to any one of claims 1 to 8, comprising the steps of: before the device for collecting the material motion image, the first mass flowmeter is closed, and meanwhile, the control panel A is opened to output a signal for converting the alternating current output by the power supply unit into direct current; when the material moving image begins to be collected, the first mass flow meter is started, and meanwhile, the control panel A is started to output a signal for converting alternating current transmitted by the power supply unit into zero current.
10. The use method according to claim 9, wherein when the device for collecting the moving images of the materials comprises a deceleration zone, when the materials fall to the bottom of the hearth, the control panel a is started to output a signal for converting the alternating current transmitted by the power supply unit into the direct current a.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120134190A1 (en) * | 2010-11-26 | 2012-05-31 | Samsung Electronics Co., Ltd. | Image forming apparatus and control method thereof |
| CN104048647A (en) * | 2014-05-09 | 2014-09-17 | 华东理工大学 | Collection device and collection method for reconstruction of three dimensional (3D) structure of flame in hearth |
| CN211959392U (en) * | 2020-04-28 | 2020-11-17 | 华东理工大学 | Gather material motion image's device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120134190A1 (en) * | 2010-11-26 | 2012-05-31 | Samsung Electronics Co., Ltd. | Image forming apparatus and control method thereof |
| CN104048647A (en) * | 2014-05-09 | 2014-09-17 | 华东理工大学 | Collection device and collection method for reconstruction of three dimensional (3D) structure of flame in hearth |
| CN211959392U (en) * | 2020-04-28 | 2020-11-17 | 华东理工大学 | Gather material motion image's device |
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