CN217156366U - Survey ice crystal melt, freeze, closed experimental apparatus of striking action - Google Patents
Survey ice crystal melt, freeze, closed experimental apparatus of striking action Download PDFInfo
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- CN217156366U CN217156366U CN202123211540.9U CN202123211540U CN217156366U CN 217156366 U CN217156366 U CN 217156366U CN 202123211540 U CN202123211540 U CN 202123211540U CN 217156366 U CN217156366 U CN 217156366U
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Abstract
The utility model relates to an survey ice crystal and melt, freeze, the closed experimental apparatus of striking action. A closed experimental device for observing ice crystal melting and freezing comprises a heat insulation box, a gas cooling system, a gas heating system, an ice crystal suspension device and an ice crystal measuring device; the gas cooling system and the gas heating system are respectively connected with the gas inlet and are respectively used for sending low-temperature gas and high-temperature gas into the heat-insulating box to cool or heat the heat-insulating box; the ice crystal suspension device comprises an ultrasonic suspension instrument and a liquid drop generator; the ultrasonic suspension instrument is used for suspending the liquid generated by the liquid drop generator; the ice crystal measuring device comprises an ice crystal water content measuring device, an ice crystal change process recording device and a data storage device. A closed type visual experiment device for observing the melting and freezing of ice crystals can be used for researching the melting process and the freezing process of liquid drops of ice crystals with different shapes.
Description
Technical Field
The utility model relates to an survey ice crystal and melt, freeze, the closed experimental apparatus of striking action.
Background
Icing of aircraft engines has been a significant cause of impact on the safe and smooth operation of aircraft. After the nineties of the last century, a number of engine thrust loss events have occurred over tropical and subtropical lands. This phenomenon was originally thought to be caused by the freezing of supercooled water droplets in the engine, but most of these engine freezing events occurred over land at an altitude of 7000m or more, and the temperature in these areas was mostly below the limit temperature for the presence of liquid water, and theoretically there were only few supercooled water droplets and no ice deposition on the engine, and these events were later thought to be caused by the tiny ice crystal particles in the atmosphere.
Research on supercooled water droplets is currently widespread, but research on ice crystals is relatively rare. The method aims at the melting process of spherical ice crystals and non-spherical ice crystals, the freezing process of liquid drops and the behavior of ice crystals with different melting rates impacting the wall surface, and is the basis for developing the ice-freezing research of airplanes. With the increasing interest in ice crystal icing for aircraft, it is of great interest to conduct basic experiments on ice crystals.
Disclosure of Invention
In order to overcome the problem that exists among the above-mentioned prior art, the utility model provides an observe ice crystal and melt, frozen closed experimental apparatus can be used for studying the closed visual experimental apparatus that different shape ice crystals melt process, liquid drop freezing process, and temperature adjustable is controllable, and this experimental apparatus has integrateed that the ice crystal melts process observation, liquid drop freezing process and has observed the function, can realize studying the mechanism that the ice crystal freezes.
The utility model provides a technical scheme of above-mentioned problem is:
a closed experimental device for observing the melting and freezing of ice crystals is characterized in that:
comprises a heat insulation box, a gas cooling system, a gas heating system, an ice crystal suspension device and an ice crystal measuring device;
the gas cooling system and the gas heating system are respectively used for sending low-temperature gas and high-temperature gas into the heat-insulating box to cool or heat the heat-insulating box;
the ice crystal suspension device comprises an ultrasonic suspension instrument and a liquid drop generator, wherein the liquid drop generator is arranged on the inner side of the heat insulation box body and can control the position and the size of liquid generation; the ultrasonic suspension instrument is vertically and fixedly arranged in the heat insulation box and is used for suspending the liquid generated by the liquid drop generator;
the ice crystal measuring device comprises an ice crystal water content measuring device, an ice crystal change process recording device and a data memory;
the ice crystal water content measuring device comprises a laser light source and a CCD camera; the ice crystal change process recording device comprises a high-speed camera and a cold light source; the data memory is used for storing data acquired by the CCD camera and the high-speed video camera.
Further, the gas cooling system and the gas heating system comprise a nitrogen gas bottle, a liquid nitrogen Dewar flask, a heater and a vacuum pump, wherein the nitrogen gas bottle is connected with the heater through a pipeline and then connected with a gas inlet of the heat insulation box through a pipeline; the nitrogen bottle is also introduced into an inlet of the liquid nitrogen Dewar bottle through a pipeline, and an outlet of the liquid nitrogen Dewar bottle is connected with a gas inlet of the heat insulation box through a pipeline; the vacuum pump pumps air from the liquid nitrogen Dewar bottle to keep the temperature of the liquid nitrogen stable.
Further, the ultrasonic suspension instrument comprises an ultrasonic generator and an ultrasonic reflector, and the liquid generated by the liquid drop generator is positioned at a stagnation point between the ultrasonic generator and the ultrasonic reflector.
Furthermore, the heat-insulating box is provided with a glass window, so that the running condition of the experimental device can be directly observed.
The utility model discloses still provide an survey ice crystal and melt, freeze, the closed experimental apparatus of striking action, this experimental apparatus integrated the ice crystal melt the process survey, the liquid drop freezes the process survey and three kinds of functions are observed to ice crystal striking wall action, can realize studying the frozen mechanism of ice crystal.
A closed experimental device for observing the melting, freezing and impacting behaviors of ice crystals is characterized in that:
the device comprises the closed experimental device for observing the melting and freezing of the ice crystals, wherein an ice crystal impactor is arranged in the heat-insulating box;
the ice crystal impactor comprises a base, wherein a motor is arranged on one side of the base, a support is arranged on the other side of the base, a power output shaft of the motor is connected with one end of a rotating shaft, and the other end of the rotating shaft is fixed on the support through a bearing;
the rotary shaft is provided with two key slots and two grooves in the middle; the rotary table is provided with a central hole, and the plane flange is provided with a central hole and a key groove; the rotating shaft penetrates through the center holes of the rotating disc and the two plane flanges, the two plane flanges are respectively arranged on two sides of the rotating disc, the rotating shaft and the two plane flanges are circumferentially fixed through keys, and the rotating shaft and the plane flanges are axially fixed through elastic check rings; the connecting surface of the rotary table is provided with a through hole, the plane flange is also provided with a through hole, and a bolt passes through the through holes on the rotary table and the plane flange and then is fixed by a nut;
a plurality of grooves are arranged on the circumference of the turntable, an ejection device is arranged in one groove, and balancing weights are arranged in the other grooves; the ejection device comprises an ejector and a movable wall surface; the ejector can drive the movable wall surface to extend out of the side surface of the turntable.
The ejector comprises a motor, a motor bracket and a track, wherein the motor is fixed on the motor bracket, and the motor bracket is fixed in the groove of the turntable; the track is provided with a sliding groove, a movable rack is arranged in the sliding groove, two sides of the rack are provided with limiting columns, the limiting columns stretch into the sliding groove to limit the maximum displacement of the rack, a power output end of the motor is provided with a gear, the gear is meshed with the rack, the top of the rack is provided with a baffle, and a movable wall surface is arranged on the baffle.
Furthermore, a flange pad is arranged between the two plane flanges and the rotary table and used for buffering and damping.
Furthermore, a spring gasket is added between the plane flange and the nut, so that the nut is prevented from loosening when the rotary table rotates at a high speed.
Further, a power output shaft of the motor is connected with the rotating shaft through a coupling.
Further, the movable wall surface comprises a fixed end and a working surface, the working surface is perpendicular to the fixed end, and the fixed end is fixed on the baffle at the top of the rack.
Further, when the ejection device is not opened, the working surface of the movable wall surface is positioned in the groove of the turntable.
Furthermore, the movable wall surface is detachably connected with the baffle.
Furthermore, four grooves are formed in the rotary table and are evenly distributed on the periphery of the rotary table.
Further, the rotating speed of the motor is adjustable.
Furthermore, the balancing weight is fixed in a groove on the turntable through a screw.
The utility model has the advantages that:
1) the utility model provides a closed experimental device, which is little influenced by the external environment, and is provided with a gas heating and cooling system, and the temperature of the environment where the research is located is adjustable and controllable;
2) the utility model is a visual experimental device, which is convenient for adjusting the position of a measuring sensor and can directly observe the running condition of the experimental device;
3) the utility model has the functions of ice crystal melting, liquid drop freezing and ice crystal high-speed wall surface impacting, and can realize the basic research of various ice crystals;
4) the utility model discloses a pivoted method removes the wall with higher speed, can realize high-speed stable striking result, and the impact velocity of ice crystal is highly controllable, and speed range is wider, can repeatedly test.
5) Adopt the utility model discloses a during ice crystal impinger is experimental, can not destroy the water film form of the crystalline surface of ice that part melts and cover.
6) The utility model discloses an ice crystal impinger uses jettison device, launches out the removal wall after the stable speed of carousel, can realize the high-speed striking of ice crystal to avoid the change of striking position, surveyd simplyr.
7) The utility model discloses a it is removable to remove the wall in the ice crystal impinger, and the shape includes and is not limited to shape such as face of cylinder, wing section, wedge, plane, can study the action of different speed, different grade type wall and ice crystal striking back ice crystal.
8) The utility model discloses an ice crystal impinger is low to jetter's requirement, does not need the jetter of high accuracy and complex construction just can realize the high accuracy control of ice crystal striking wall speed, under the complexity of minimize impinger and the precision to jetter, the condition that speed required, can enlarge the impact velocity scope of ice crystal, improves impact velocity to it is adjustable controllable to realize impact velocity.
Drawings
FIG. 1 is a general structural view of an ice crystal impactor according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a block diagram of the ejector of FIG. 1;
FIG. 4 is an exploded view of FIG. 3;
FIG. 5 is a schematic view of the closed experimental apparatus for observing the melting and freezing of ice crystals according to the present invention;
FIG. 6 is a flow chart of the closed experimental facility for observing the melting and freezing of ice crystals;
fig. 7 is a plan view of the inside of the heat insulating box of the present invention.
Wherein: 1. the base, 2, the motor, 3, the support, 4, the pivot, 5, the carousel, 6, the plane flange, 7, the keyway, 9, the slot, 10, the bolt, 11, the nut, 13, the balancing weight, 14, the removal wall, 15, the motor, 16, the motor support, 17, the track, 20, the rack, 21, spacing post, 22, the gear, 23, the baffle, 25, the flange pad, 26, the shaft coupling, 27, the stiff end, 28, the working face.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
The utility model provides a temperature is adjustable controllable, can be used for studying the closed visual experimental apparatus that different shape ice crystals melt process, liquid drop freezing process. The experimental device integrates the functions of ice crystal melting process observation and liquid drop freezing process observation, and can realize the research on the ice crystal freezing mechanism.
Example 1
Referring to fig. 5-7, a closed experimental device for observing the melting and freezing of ice crystals comprises an insulated box, a gas cooling system, a gas heating system, an ice crystal suspension device and an ice crystal measuring device. The gas cooling system and the gas heating system are respectively used for sending low-temperature gas and high-temperature gas into the heat-insulating box to cool or heat the heat-insulating box. The ice crystal suspension device comprises an ultrasonic suspension instrument and a liquid drop generator, wherein the liquid drop generator is arranged on the inner side of the heat insulation box body and can control the position and the size of liquid generation; the ultrasonic suspension instrument is vertically and fixedly arranged in the heat insulation box and is used for suspending the liquid generated by the liquid drop generator; the ice crystal measuring device comprises an ice crystal water content measuring device, an ice crystal change process recording device and a data memory; the ice crystal water content measuring device comprises a laser light source and a CCD camera; the ice crystal change process recording device comprises a high-speed camera and a cold light source; the data memory is used for storing data acquired by the CCD camera and the high-speed video camera. The laser light source, the ice crystal and the CCD camera are in the same straight line, and the cold light source, the ice crystal and the high-speed camera are in the same straight line.
As a preferred scheme of the utility model, gas cooling system, gaseous heating system include high-pressure nitrogen gas bottle, liquid nitrogen dewar bottle, heater and vacuum pump. The high-pressure nitrogen cylinder is connected with the heater through a pipeline, and the heater heats nitrogen and then leads the heated nitrogen into the gas inlet of the heat-insulating box through the pipeline to heat the interior of the heat-insulating box; the high-pressure nitrogen bottle is also introduced into an inlet of the liquid nitrogen Dewar bottle through a pipeline, nitrogen is subjected to cooling through liquid nitrogen in the liquid nitrogen Dewar bottle, and an outlet of the liquid nitrogen Dewar bottle is connected with a gas inlet of the heat insulation box through a pipeline to cool the interior of the heat insulation box; the vacuum pump pumps air from the liquid nitrogen Dewar bottle to keep the temperature of the liquid nitrogen stable. And valves are arranged on the pipelines and are used for controlling the flow of the gas.
The liquid drops generated by the liquid drop generator are suspended in the air under the action of the ice crystal suspension device, and the physical properties of the liquid drops change along with the change of the temperature. The flow equalizing plate is arranged at the gas inlet of the heat insulating box, so that the gas flow uniformly and slowly flows into the heat insulating box, namely, the movement of the gas flow only plays a role in cooling or heating, and does not cause the displacement of liquid drops/ice crystals.
As a preferred scheme of the utility model, above-mentioned ultrasonic wave suspension appearance includes supersonic generator and the ultrasonic reflector of vertical direction setting, and supersonic generator is located adiabatic bottom of the case portion, and the ultrasonic reflector is located adiabatic roof portion, and the liquid that the liquid droplet generator produced is located between supersonic generator and the ultrasonic reflector.
As a preferred scheme of the utility model, it has the glass window to open on the thermal-insulated case lateral wall, can directly survey experimental apparatus's operational aspect.
As the utility model discloses a preferred scheme, above-mentioned survey ice crystal melt, frozen closed experimental apparatus still includes computer and power, and the power is used for giving the power supply of whole device, and the computer is connected with data memory for show the data of gathering.
The working process of the closed experimental device for observing the melting and freezing of the ice crystals is as follows:
droplet freezing study: the droplet generator generates droplets of a suitable size, which are suspended at a stagnation point using an ultrasonic suspension apparatus. Adjusting the laser light source, aligning the CCD camera and the high-speed camera, opening the adjusting valve of the gas cooling system, controlling the flow of cold nitrogen, and recording the ice forming process when the suspension drops are frozen and the proportion of the frozen part of the drops.
Ice crystal melting study: placing ice crystal particles with different shapes and sizes at a stagnation point of an ultrasonic suspension instrument for suspension, adjusting a laser light source, a charge coupled camera and a high-speed camera to align the laser light source, the charge coupled camera and the high-speed camera, opening an adjusting valve of a gas heating system, controlling the flow of hot nitrogen, and recording the positions of ice crystal melt water with different shapes firstly and the law of the melting rate.
Example 2
A closed experimental device for observing the melting, freezing and impacting behaviors of ice crystals is characterized in that an ice crystal impactor is further arranged in a heat-insulating box on the basis of embodiment 1 so as to realize that the ice crystals or the partially melted ice crystals impact different wall surfaces at high speed.
The ice crystal impactor does not damage a water film covered on the surface of a partially melted ice crystal, and realizes high-speed impact between the ice crystal and the wall surface. The ice crystal impactor can accurately control the impact speed of ice crystals in a large impact speed range, and the impact angle, the shape of the collision wall surface, the material and the wall surface structure can be changed.
Referring to fig. 1 and 2, the ice crystal impactor comprises a base 1, a rotary table 5 and two planar flanges 6, wherein a motor 2 is arranged on one side of the base 1, a support 3 is arranged on the other side of the base 1, a power output shaft of the motor 2 is connected with one end of a rotating shaft 4, and the other end of the rotating shaft 4 is fixed on the support 3 through a bearing. Two key grooves 7 and two grooves 9 are formed in the middle of the rotating shaft 4; the rotary table 5 is provided with a central hole, and the plane flange 6 is provided with a central hole and a key slot; the rotating shaft 4 penetrates through center holes of the rotary table 5 and the two plane flanges 6, the two plane flanges 6 are respectively arranged on two sides of the rotary table 5, and the rotating shaft 4 and the two plane flanges 6 are circumferentially fixed through keys, so that synchronous rotation of the plane flanges, the rotary table and the rotating shaft is guaranteed. The rotating shaft 4 and the planar flange 6 are axially fixed by using elastic check rings, and the axial displacement of the planar flange is limited by using the elastic check rings.
A through hole is formed in the connecting surface of the rotary table 5, a through hole is also formed in the planar flange 6, and the rotary table 5 and the planar flange 6 are fixed through a nut 11 after a bolt 10 penetrates through the through holes; a plurality of grooves are arranged on the circumference of the rotary table 5, an ejection device is arranged in one groove, and balancing weights 13 are arranged in the other grooves. The ejection means comprises an ejector and a moving wall 14; the ejector can drive the movable wall 14 to extend out of the side surface of the rotating disc 5.
High-speed adjustable rotary type ice crystal impinger is rotatory by motor 2 control carousel 5, obtains the relation of impact velocity and rotational speed by ice crystal striking point position. The specific principle is that the impactor is started, and the rotating shaft 4 and the rotating disc 5 synchronously rotate by controlling the rotating speed of the output shaft of the motor 2, so that the preset rotating speed is obtained and the preset rotating speed is kept stable. When the ice crystal state reaches the experimental requirement, the ejector quickly ejects the moving wall surface 14, so that the side surface of the moving wall surface 14 impacts the ice crystal. The impact speed of the ice crystals is controlled by controlling the rotating speed of the motor, and the type of the ice crystals impacting the wall surface is changed by replacing the movable wall surface, so that the impact between the wall surfaces with different speeds and different types and the ice crystals is realized.
Referring to fig. 3 and 4, the ejector comprises a motor 15, a motor support 16 and a rail 17, wherein the motor 15 is fixed on the motor support 16, and the motor support 16 is fixed in a groove of the rotating disc 5.
The track 17 is provided with a sliding groove, a movable rack 20 is arranged in the sliding groove, two sides of the rack 20 are provided with limiting columns 21, the limiting columns 21 stretch into the sliding groove to limit the maximum displacement of the rack 20, a gear 22 is arranged at the power output end of the motor 15, the gear 22 is meshed with the rack 20, a baffle 23 is arranged at the top of the rack 20, and the movable wall 14 is arranged on the baffle 23.
As a preferred embodiment of the present invention, a flange pad 25 is disposed between the two planar flanges 6 and the rotary table 5 for buffering and damping.
As a preferred embodiment of the present invention, a spring washer is added between the planar flange 6 and the nut 11 to prevent the nut 11 from loosening when the rotary table 5 is rotated at a high speed.
As a preferred embodiment of the present invention, the power output shaft of the motor 2 is connected to the rotating shaft 4 through a coupling 26.
As a preferred embodiment of the present invention, the movable wall 14 includes a fixed end 27 and a working surface 28, the working surface 28 is perpendicular to the fixed end 27, and the fixed end 27 is fixed on the baffle 23 at the top of the rack 20.
As a preferred embodiment of the present invention, when the ejection device is not opened, the working surface 28 of the moving wall 14 is located in the groove of the rotating disc 5, and the top of the moving wall 14 cannot exceed the circumferential surface of the rotating disc 5.
As a preferred embodiment of the present invention, the movable wall 14 is detachably connected to the baffle 23. The movable wall 14 can be replaced, and the shape of the working surface 28 includes, but is not limited to, a cylindrical surface, an airfoil shape, a wedge shape, a plane, etc., and the speed, angle, working surface shape, material, and working surface structure of the impact can be changed.
As a preferred embodiment of the present invention, four grooves are provided on the turntable 5, and four grooves are circumferentially and uniformly distributed on the turntable 5.
Operating principle of ejection device
The rotation is converted into a linear motion by a rack and pinion mechanism, so that the rotation of the motor 15 is converted into a translation of the moving wall 14. Referring to fig. 3 (a), when the motor 15 does not start operating, the rack 20 is located at a lower portion of the rail 17. Referring to fig. 3 (b), when the rotation speed of the turntable 5 reaches the set rotation speed, the control module 19 controls the motor 15 to operate, and the moving wall 14 is ejected through the rack-and-pinion structure.
The utility model discloses to the theory of operation of ice crystal striking wall research: the droplet generator generates droplets of a suitable size, which are suspended at a stagnation point using an ultrasonic suspension apparatus. The laser light source, charge coupled camera (ccd camera), high speed video camera are adjusted to aim them, the adjusting valve of the gas cooling system is opened to freeze the liquid drops into ice crystals completely. Opening the rotary ice crystal impactor to reach the speed required by the experiment, adjusting the gas cooling system and the gas heating system, controlling the rotary ice crystal impactor to pop up the movable wall surface when detecting that the ice crystal melting rate reaches the experiment requirement, and recording the impact behavior of the ice crystal with the specific melting rate on the wall surface at the specific speed by using a high-speed camera.
The utility model discloses a feasibility analysis:
the rotating speed n rpm of the rotating disc 5, the radius r of the rotating disc 5 and the maximum extending distance l of the moving wall surface 14 outside the special rotating disc 5 are the same, and the impact speed v is preset on the assumption that the ice crystal impact point is on the outermost side of the moving wall surface 14.
Average speed v of the ejector ejecting the moving wall 14 1 Time of ejection t 1 The turntable 5 rotates for a period of time t.
t＝60/n
Is calculated to
The impact velocity of the ice crystals is independent of the ejection velocity of the ejector.
K <1 is required, provided that the moving wall 14 is fully extended to hit the ice crystals during one rotation of the turntable 5.
Because 5 radiuses of carousel generally are the several times to the dozen times that remove the wall and extend to 5 outer distances of carousel the biggest, so the utility model discloses requirement to jettison device is lower, specifically embodies:
1) the speed of ejecting the movable wall surface 14 by the ejection device is not required to be accurately controlled, only the average ejection speed is larger than the minimum ejection speed, and the high-precision ejection device is not required;
2) since the radius of the turntable 5 is generally several times to ten times the maximum distance of the movable wall surface 14 extending outside the turntable 5, the minimum ejection speed is low, and an ejection device with a complicated structure or a high-speed ejection device is not required.
The above is only the embodiment of the present invention, not the limitation of the protection scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related system fields are included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an survey ice crystal and melt, frozen closed experimental apparatus which characterized in that:
comprises a heat insulation box, a gas cooling system, a gas heating system, an ice crystal suspension device and an ice crystal measuring device;
the gas cooling system and the gas heating system are respectively used for sending low-temperature gas and high-temperature gas into the heat-insulating box to cool or heat the heat-insulating box;
the ice crystal suspension device comprises an ultrasonic suspension instrument and a liquid drop generator, wherein the liquid drop generator is arranged on the inner side of the heat insulation box body and can control the position and the size of liquid generation; the ultrasonic suspension instrument is vertically and fixedly arranged in the heat insulation box and is used for suspending the liquid generated by the liquid drop generator;
the ice crystal measuring device comprises an ice crystal water content measuring device, an ice crystal change process recording device and a data memory;
the ice crystal water content measuring device comprises a laser light source and a CCD camera; the ice crystal change process recording device comprises a high-speed camera and a cold light source; the data memory is used for storing data acquired by the CCD camera and the high-speed video camera.
2. The enclosed experimental facility for observing the melting and freezing of ice crystals as claimed in claim 1, wherein:
the gas cooling system and the gas heating system comprise a nitrogen gas bottle, a liquid nitrogen Dewar flask, a heater and a vacuum pump, wherein the nitrogen gas bottle is connected with the heater through a pipeline and then connected with a gas inlet of the heat insulation box through a pipeline; the nitrogen bottle is also introduced into an inlet of the liquid nitrogen Dewar bottle through a pipeline, and an outlet of the liquid nitrogen Dewar bottle is connected with a gas inlet of the heat insulation box through a pipeline; the vacuum pump pumps air from the liquid nitrogen Dewar bottle to keep the temperature of the liquid nitrogen stable.
3. The enclosed experimental facility for observing the melting and freezing of ice crystals as claimed in claim 2, wherein:
the ultrasonic suspension instrument comprises an ultrasonic generator and an ultrasonic reflector, and liquid generated by the liquid drop generator is positioned at a stagnation point between the ultrasonic generator and the ultrasonic reflector.
4. The enclosed experimental facility for observing the melting and freezing of ice crystals as claimed in claim 3, wherein:
the heat-insulating box is provided with a glass window, so that the running condition of the experimental device can be directly observed.
5. The utility model provides an observation ice crystal melts, freezes, closed experimental apparatus of striking action which characterized in that:
the closed experimental device for observing the melting and freezing of ice crystals comprises the closed experimental device for observing the melting and freezing of ice crystals as claimed in any one of claims 1 to 4, wherein an ice crystal impactor is arranged in the heat-insulating box;
the ice crystal impactor comprises a base (1), a motor (2) is arranged on one side of the base (1), a support (3) is arranged on the other side of the base (1), a power output shaft of the motor (2) is connected with one end of a rotating shaft (4), and the other end of the rotating shaft (4) is fixed on the support (3) through a bearing;
the rotary table further comprises a rotary table (5) and two plane flanges (6), wherein the middle of the rotary shaft (4) is provided with two key slots (7) and two grooves (9); the rotary table (5) is provided with a central hole, and the planar flange (6) is provided with a central hole and a key slot;
the rotating shaft (4) penetrates through the rotating disc (5) and the central holes of the two plane flanges (6), and the two plane flanges (6) are respectively arranged on two sides of the rotating disc (5);
the rotating shaft (4) and the two plane flanges (6) are circumferentially fixed through keys, and the rotating shaft (4) and the plane flanges (6) are axially fixed through elastic check rings;
a through hole is formed in the connecting surface of the rotary table (5), a through hole is also formed in the planar flange (6), and a bolt (10) penetrates through the through holes in the rotary table (5) and the planar flange (6) and then is fixed by a nut (11);
a plurality of grooves are formed in the circumference of the rotary table (5), an ejection device is arranged in one groove, and balancing weights (13) are arranged in the other grooves;
the ejection device comprises an ejector and a moving wall surface (14); the ejector can drive the movable wall surface (14) to extend out of the side surface of the turntable (5);
the ejector comprises a motor (15), a motor support (16) and a track (17), wherein the motor (15) is fixed on the motor support (16), and the motor support (16) is fixed in a groove of the turntable (5);
be equipped with the spout on track (17), be equipped with mobilizable rack (20) in the spout, the both sides of rack (20) are equipped with spacing post (21), and spacing post (21) stretch into the spout in, carry on spacingly to the maximum displacement of rack (20), and the power take off end of motor (15) is equipped with gear (22), and gear (22) and rack (20) meshing, the top of rack (20) are equipped with baffle (23), and removal wall (14) set up on baffle (23).
6. The enclosed experimental facility for observing ice crystal melting, freezing and impacting behaviors as claimed in claim 5, wherein:
a flange pad (25) is arranged between the two plane flanges (6) and the rotary table (5) and is used for buffering and damping; a spring gasket is added between the plane flange (6) and the nut (11) to prevent the nut (11) from loosening when the rotary disc (5) rotates at high speed.
7. The enclosed experimental facility for observing ice crystal melting, freezing and impacting behaviors as claimed in claim 6, wherein:
the power output shaft of the motor (2) is connected with the rotating shaft (4) through a coupling (26); the movable wall surface (14) comprises a fixed end (27) and a working surface (28), the working surface (28) is perpendicular to the fixed end (27), and the fixed end (27) is fixed on a baffle (23) at the top of the rack (20).
8. The enclosed experimental facility for observing ice crystal melting, freezing and impacting behaviors as claimed in claim 5, wherein:
the movable wall surface (14) is detachably connected with the baffle plate (23).
9. The enclosed experimental facility for observing the melting, freezing and impacting behaviors of ice crystals as claimed in claim 5, wherein:
the turntable (5) is provided with four grooves which are uniformly distributed on the circumference of the turntable (5); the rotating speed of the motor (2) is adjustable.
10. The enclosed experimental facility for observing the melting, freezing and impacting behaviors of ice crystals as claimed in claim 5, wherein:
the balancing weight (13) is fixed in a groove on the turntable (5) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123211540.9U CN217156366U (en) | 2021-12-20 | 2021-12-20 | Survey ice crystal melt, freeze, closed experimental apparatus of striking action |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123211540.9U CN217156366U (en) | 2021-12-20 | 2021-12-20 | Survey ice crystal melt, freeze, closed experimental apparatus of striking action |
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| CN217156366U true CN217156366U (en) | 2022-08-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414616A (en) * | 2021-12-20 | 2022-04-29 | 西安交通大学 | Closed experimental device for observing melting, freezing and impacting behaviors of ice crystals |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414616A (en) * | 2021-12-20 | 2022-04-29 | 西安交通大学 | Closed experimental device for observing melting, freezing and impacting behaviors of ice crystals |
| CN114414616B (en) * | 2021-12-20 | 2024-10-01 | 西安交通大学 | Closed experimental device for observing ice crystal melting, freezing and impact behaviors |
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