CN111157576A - Solid combustion reactor for flame observation under centrifugal rotation state - Google Patents
Solid combustion reactor for flame observation under centrifugal rotation state Download PDFInfo
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- 230000001133 acceleration Effects 0.000 claims abstract description 5
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- 239000007789 gas Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
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- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
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Abstract
The invention discloses a solid combustion reactor for observing flame in a centrifugal rotation state, which comprises an inner reactor and an outer reactor, wherein the side wall of the outer reactor is provided with side holes for inserting a side hole thermocouple, an ignition agent spray pipe and an electric heating wire igniter, and the bottom plate of the outer reactor is inserted with a bottom hole thermocouple and a rotating shaft connected with an external motor; an assembly platform is fixed in the inner space of the outer reactor, a plurality of inner reactors which are distributed in the radial direction are arranged on the assembly platform, and a detonator of the ignition agent and an igniter of the electric heating wire are inserted into the inner space of the inner reactor; the rotating shaft drives the outer reactor to rotate, the inner reactor rotates along with the outer reactor, the angular velocity and the angular acceleration of the centrifugal motion of the inner reactor are controlled by the rotating shaft, and the turning radius of the inner reactor is determined by the assembly position of the inner reactor on the assembly platform. The invention can quickly and effectively simulate the movement state of centrifugal rotation, avoids the influence of external environment, reduces convection, has a stable ignition combustion system, and effectively observes the flame form and characteristics.
Description
Technical Field
The invention belongs to the field of combustion methods or equipment only using solid fuel, and relates to combustion equipment with a driving device for pushing fuel to pass through a combustion chamber, in particular to combustion equipment with a movable fuel supporting surface and a movable component fuel supporting surface.
Background
Solid combustion is one of the important research areas involved in the science of combustion, chemistry, energy and power, and the technical applications of the above mentioned scientific techniques. Coal is one of the most common solid fuels currently studied in solid combustion, and in addition, natural solid fuels such as wood and oil shale, and solid fuels processed from charcoal, solid alcohol, solid rocket fuel, and the like are also available. Among them, solid rocket fuels are one of the important leading research topics.
Rocket fuels fall into two categories, solid fuels and liquid fuels. The rocket solid fuel has the advantages of short preparation time, stable chemical property, long storage period, easy relocation and the like. For rocket solid fuel, the oxidant and the fuel are mixed in advance and processed into columnar solid, and the columnar solid is directly ignited during launching. At present, some rocket types in China begin to use solid fuel for propulsion.
The combustion of solid fuel is a relatively complex process, and along with the combustion process of the fuel, the fuel is subjected to physical phenomena such as gasification and sublimation (such as hexamethylenetetramine, sublimation occurs in the combustion process), and complex chemical changes such as pyrolysis and oxidation occur simultaneously, so that the combustion system is converted into complex heterogeneous reactions from a single homogeneous system, and the gas-liquid reactions and the gas-solid reactions are mixed. This leads to great difficulty in the research on the combustion and flame of solid fuel, especially in designing solid flame under special conditions of low gravity, centrifugal force, weak buoyancy, etc. In order to solve the above problems, some experimental devices with better effects have been proposed in the current stage of research, and the emphasis of experimental equipment is different according to the research emphasis. Flame morphology (including flame brightness, shape and the like) is one of the most important research points in combustion research, and a reactor focusing on flame morphology observation needs to consider the stability of flame morphology and avoid the influence of external factors.
At present, a reactor for observing the flame form of the solid fuel is basically self-designed, and a reaction chamber for observing the flame characteristics of the typical solid fuel under low gravity, a cubic reaction chamber for observing the flame characteristics and measuring smoke components and a cylindrical experiment chamber for detecting flame propagation under the environment of microgravity and weak buoyancy, which are independently designed by scientific research institutions in China, are relatively representative reactors. The two reaction cabins are both directed to solid fuel combustion research under low-gravity conditions of rockets, manned spacecrafts and the like.
However, currently, there is no practical observation device for the solid fuel combustion under the influence of the centrifugal force field and the centrifugal rotation, and the solid fuel combustion under the influence of the centrifugal force field and the centrifugal rotation is a problem that the power research of rockets and manned spacecraft is unavoidable.
Disclosure of Invention
With regard to the needs of current solid combustion and flame research, it is necessary to design a set of new experimental apparatus, and this set of apparatus needs can be fast effectual simulate out the rotatory motion state of centrifugation, need realize the closure simultaneously, avoids external environment's influence, and the convection current of minimizing has stable ignition combustion system, can effectively observe flame form and characteristics. Aiming at the prior art, the invention provides a solid combustion reactor for flame observation in a centrifugal rotation state, which comprises a reactor and an observation system. The device can effectively simulate the centrifugal rotation motion states of different rotating speeds, realize a closed experimental environment, effectively observe solid combustion flame, and enrich the flame form data in the centrifugal rotation state. This device safe and reliable, the dismouting of being convenient for is overhauld.
In order to solve the technical problem, the invention provides a solid combustion reactor for flame observation in a centrifugal rotation state, which comprises an outer reactor and an inner reactor;
the outer reactor comprises an outer reactor base and an outer reactor cover, annular toughened glass is arranged between the outer reactor base and the outer reactor cover, and a space defined by the outer reactor cover, the annular toughened glass and the outer reactor base is an inner space of the outer reactor; the inner wall of the outer reactor base is a cylindrical inner surface; the side wall of the upper part of the outer reactor base is provided with 2 coaxial outer reactor side holes, the bottom plate of the outer reactor base is provided with a central threaded hole, a rotating shaft is assembled in the central threaded hole, and the rotating shaft is externally connected with a motor; an assembly platform support is welded in the inner space of the outer reactor, the height of the assembly platform support is lower than the position of the side hole of the outer reactor, an assembly platform is fixed on the assembly platform support, a plurality of square assembly holes are formed in the assembly platform, positioning points of the square assembly holes are distributed on two cross intersecting lines at equal intervals, and the intersection point of the cross intersecting lines is superposed with the central point of the assembly platform; the square assembling hole is used for installing the inner reactor;
the top of the inner reactor is a hemispherical shell, the lower part of the inner reactor is a cylindrical shell communicated with the hemispherical shell, and the inner space of the inner reactor is formed by the communicated hemispherical shell and the cylindrical shell; the bottom of the inner reactor is a quadrangular prism matched with the square assembling hole; 4 inner reactor side holes are formed in the side wall of the cylindrical shell, and the 4 inner reactor side holes are uniformly distributed in the circumferential direction;
a side hole thermocouple and an ignition agent nozzle are inserted into a side hole of one outer reactor and used for detecting the temperature near the inner reactor and injecting ignition gas, another side hole thermocouple and an electric heating wire igniter are inserted into a side hole of the other outer reactor, and the ignition agent nozzle and the electric heating wire igniter are inserted into the inner space of the inner reactor through the side hole of the inner reactor;
4 bottom plate through holes are uniformly formed in the same circumference on the bottom plate of the outer reactor base, wherein bottom hole thermocouples are respectively inserted into the 2 bottom plate through holes and are used for the air temperature near the inner reactor;
the rotating shaft matched with the central threaded hole in the bottom plate of the outer reactor rotates under the driving of the motor, the rotating shaft drives the outer reactor to rotate, the inner reactor rotates along with the assembly platform, the angular speed and the angular acceleration of the centrifugal motion of the inner reactor are controlled by the rotating shaft, and the turning radius of the inner reactor is determined by the assembly position of the inner reactor on the assembly platform.
Further, the solid combustion reactor for observing flame in a centrifugal rotation state is characterized in that clamping grooves are formed in the upper end of the outer reactor base and the lower end of the reactor cover, the annular toughened glass is clamped in the clamping grooves, and a sealing gasket is arranged between the annular toughened glass and the clamping grooves.
And the other two bottom surface through holes on the bottom plate of the outer reactor base are used for detecting smoke components.
The side hole thermocouple, the bottom hole thermocouple, the electric heating wire igniter and the ignition agent spray pipe are provided with screw plugs at the tail parts, and the screw plugs are sleeved with rubber pipes to ensure that the side hole thermocouple, the bottom hole thermocouple, the electric heating wire igniter and the ignition agent spray pipe are integrally airtight after being assembled.
The circuits related to the side hole thermocouples and the bottom hole thermocouples rotate together with the outer reactor, and no circuit twisting is generated.
The outer reactor cover and the outer reactor base are made of steel.
The inner reactor is made of toughened glass.
The top surface of the outer reactor cover is an upper-raised spherical surface.
The rotary axis of the inner reactor is parallel to the axis of the central threaded hole on the bottom plate of the outer reactor.
Compared with the prior art, the invention has the beneficial effects that:
the solid combustion reactor for observing flame in a centrifugal rotation state, which is designed by the invention, can relatively conveniently realize the simulation of the centrifugal rotation state with different rotation speeds and different turning radiuses by means of matching the rotation speed of the outer reactor with the position of the inner reactor, thereby enriching the photo data in different centrifugal motion states; the invention adopts the annular toughened glass observation window and the toughened glass internal reactor to realize the flame form observation with 360-degree visual angle, and can set the machine positions and the number of high-speed cameras according to the experimental requirements; the closed structure designed by the invention is combined with a side hole ignition system, thereby being beneficial to avoiding the influence of external environmental factors, reducing the influence of an internal flow field and avoiding convection in the ignition process; the side holes and the bottom holes are matched with the thermocouples for arrangement, so that the flame temperature can be accurately measured; the invention is easy to maintain and can effectively realize the integral flow of solid fuel combustion flame form observation and flame temperature measurement in a centrifugal rotation state.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of a solid combustion reactor of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a perspective view of the overall structural configuration of the solid combustion reactor of the present invention;
FIG. 4 is a front view of the overall structure of the solid combustion reactor of the present invention;
FIG. 5 is a plan view of the overall structure of the solid combustion reactor shown in FIG. 4, in which the glow wire igniter 12 and the ignition agent spraying tube 16 are not shown;
fig. 6 is a perspective view of the inner reactor shown in fig. 1.
In the figure:
1-outer reactor cover 2-annular toughened glass 3-outer reactor side hole
4-outer reactor base 5-assembly platform support 6-assembly platform
7-inner space of outer reactor 8-center threaded hole 9-bottom plate through hole
10-bottom hole thermocouple 11-side hole thermocouple 12-electric heating wire igniter
13-inner reactor 14-inner reactor side hole 15-square pilot hole
16-a pilot burner lance 17-the bottom of the internal reactor.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.
The invention provides a solid combustion reactor for flame observation in a centrifugal rotation state.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the outer reactor comprises an outer reactor base 4 and an outer reactor cover 1, the outer reactor cover 1 and the outer reactor base 4 are made of steel, and the top surface of the outer reactor cover 1 is a spherical surface that is upheaval; annular toughened glass 2 is arranged between the outer reactor base 4 and the outer reactor cover 1, clamping grooves are formed in the upper end of the outer reactor base 4 and the lower end of the outer reactor cover 1, the annular toughened glass 2 is clamped in the clamping grooves, and a sealing gasket is arranged between the annular toughened glass 2 and the clamping grooves. The space enclosed by the outer reactor cover 1, the annular toughened glass 2 and the outer reactor base 4 is an inner space 7 of the outer reactor; the inner wall of the outer reactor base 4 is a cylindrical inner surface; the side wall of the upper part of the outer reactor base 4 is provided with 2 coaxial outer reactor side holes 3, the bottom plate of the outer reactor base 4 is provided with a central threaded hole 8, a rotating shaft is assembled in the central threaded hole 8, and the rotating shaft is externally connected with a motor; 6 assembling platform supports 5 which are radially arranged are welded in an inner space 7 of the outer reactor, the heights of the assembling platform supports 5 are lower than the positions of the side holes 3 of the outer reactor, an assembling platform 6 is fixed on each assembling platform support 5, a plurality of square assembling holes 15 which are arranged in a cross shape at equal intervals are formed in each assembling platform 6, positioning points of the square assembling holes 15 are distributed on two cross-shaped intersecting lines at equal intervals, and the intersection point of the cross-shaped intersecting lines is superposed with the central point of each assembling platform 6; the square fitting hole 15 is used for installing the inner reactor 13.
As shown in fig. 6, the inner reactor 13 is made of tempered glass, the top of the inner reactor 13 is a hemispherical shell, the lower part of the inner reactor is a cylindrical shell communicated with the hemispherical shell, and the inner space of the inner reactor is formed by the communicated hemispherical shell and the cylindrical shell; the bottom of the inner reactor 13 is a quadrangular prism matched with the square assembly holes 15, the quadrangular prism and the square assembly holes 15 on the assembly platform can be inserted on the assembly platform 6 in a clearance fit mode, and the matching depth needs to ensure that the tail of the inner reactor 13 can be stably assembled in the square assembly holes 15 so as to ensure that the tail is not thrown out in a working state. The side wall of the cylindrical shell is provided with 4 inner reactor side holes 14, and the 4 inner reactor side holes are uniformly distributed in the circumferential direction.
As shown in fig. 1, 2 and 6, in the outer reactor, a side hole thermocouple 11 and an ignition wire torch 16 for detecting the temperature near the inner reactor 13 and injecting the ignition gas are inserted into one outer reactor side hole 3, and another side hole thermocouple and a heating wire igniter 12 are inserted into the other outer reactor side hole 3, and the ignition wire torch 16 and the heating wire igniter 12 are inserted into the inner space of the inner reactor 13 through the inner reactor side hole 14. As shown in fig. 1 and 4, 4 bottom plate through holes 9 are uniformly formed on the same circumference on the bottom plate of the outer reactor base 4, wherein 2 bottom plate through holes 9 are respectively inserted with bottom hole thermocouples 10 for detecting the air temperature near the inner reactor 13; the other two bottom through holes 9 can be used for detecting smoke components. The side hole thermocouple 11, the bottom hole thermocouple 10, the electric heating wire igniter 12 and the ignition agent nozzle 16 are provided with screw plugs at the tail parts, and rubber pipes are sleeved on the screw plugs to ensure that the whole body is airtight after the side hole thermocouple 11, the bottom hole thermocouple 10, the electric heating wire igniter 12 and the ignition agent nozzle 16 are assembled. The circuits involved in the side hole thermocouple 11 and the bottom hole thermocouple 10 rotate together with the outer reactor without wire twisting.
With reference to fig. 1, 4, 5 and 6, the axis of revolution of the inner reactor 13 is parallel to the axis of the central threaded hole 8 in the bottom plate of the outer reactor. The rotating shaft 8 matched with a central threaded hole in the bottom plate of the outer reactor rotates under the driving of the motor, the rotating shaft drives the outer reactor to rotate, the inner reactor 13 rotates along with the assembling platform 6, the angular speed and the angular acceleration of the centrifugal motion of the inner reactor 13 are controlled by the rotating shaft 8, and the turning radius of the inner reactor 13 is determined by the assembling position of the inner reactor 13 on the assembling platform 6.
The core of the solid combustion reactor designed by the invention is that the inner reactor is separated from the outer reactor, and the simulation design of different centrifugal rotation states is realized by matching the rotation of the outer reactor with the arrangement position of the inner reactor. The outer reactor is connected with a ground rotating shaft through a central threaded hole in the bottom plate, so that different rotating speeds can be realized; the inner part of the outer reactor is provided with an assembly platform which is fixed on the inner wall by a plurality of cross beams (assembly platform brackets) and is arranged in a cross way and provided with a plurality of square holes; the four prisms at the bottom of the inner reactor are inserted into the square assembling holes of the assembling platform, and the assembling holes of different square holes correspond to different turning radiuses and further correspond to different centrifugal rotation states. The solid combustion reactor realizes the simulation of a complex centrifugal motion state by using the technical scheme of matching the two reactors, has simple operation, convenient control, quick and adjustable state, mature technology and easy electric control, disassembly and maintenance.
In the invention, the inner reactor is made of toughened glass and is provided with a plurality of side holes, which is not only convenient for observing the flame form, but also convenient for arranging a thermocouple, an ignition device and a passage for igniting gas.
In the invention, the outer reactor is provided with the annular toughened glass observation window, so that the 360-degree visual angle observation of the flame form is facilitated, and the positions and the number of the observation high-speed cameras can be set according to actual needs.
In the invention, the structures such as the bracket, the platform, the through hole and the like in the inner reactor and the outer reactor are uniformly arranged, so that the stress and the processing difficulty are reduced.
The inner space of the outer reactor in the invention is closed and adopts side hole ignition. On one hand, the method is beneficial to avoiding the influence of external environmental factors, maintaining a stable combustion process and reducing convection influence. On the other hand, the electric heating ignition can be realized at one side of the device, and the ignition process does not need to open a closed environment, thereby being beneficial to reducing convection and optimizing the ignition process.
The base, the annular toughened glass and the top cover of the outer reactor are matched by clamping grooves, so that the outer reactor is easy to disassemble and maintain and has a compact equipment structure.
The bottom plate of the outer reactor is provided with four bottom plate through holes which are uniformly distributed along the circumference and are respectively provided with an inert gas inlet hole, an inert gas outlet hole and two thermocouple inserting holes. Two thermocouples are respectively arranged at two side holes of the outer reactor and the inner reactor and are matched with the bottom hole thermocouples to detect the combustion temperature, so that the accurate detection of the combustion temperature can be realized.
The solid fuel combustion experiment and the combustion flame observation process are carried out by using the invention:
firstly, placing a reaction sample (solid fuel) in the inner space of an inner reactor 13 through an inner reactor side hole 14, opening a steel outer reactor cover 1, and inserting a plurality of inner reactors 13 filled with the solid fuel into square assembly holes 15 on an assembly platform 6 according to the experimental requirement; covering a steel outer reactor cover 1 and ensuring good matching with annular toughened glass 2, inserting a side hole thermocouple 11, an electric heating wire igniter 12 and an ignition agent spray pipe 16 into a side hole 3 of the outer reactor, inserting a pair of bottom hole thermocouples 10 into 2 bottom plate through holes 9, ensuring that a tail plunger of the device (the side hole thermocouple 11, the electric heating wire igniter 12, the ignition agent spray pipe 16 and the bottom hole thermocouples 10) closes a hole, inserting the electric heating wire igniter 12 and the ignition agent spray pipe 16 into the inner space of the inner reactor 13 through a side hole 14 of the inner reactor, and keeping the ignition agent spray pipe 16 closed at the moment; opening the gas cylinder to introduce air into the inner space 7 of the external reactor, observing the flow value of the external flowmeter of the through hole 9 of the bottom plate after the air intake and exhaust are stable, and proving that the container is not gas-tight when the air intake and exhaust flow value is close, so that experiments can be carried out; leak detection according to laboratory regulations, such as air leakage; according to the experimental requirements, gas (air, oxygen or inert gas) is introduced into the internal space 7 of the reactor through the bottom plate through hole 9 for air inlet, after the air inlet is stable, if solid fuel needs an ignition agent, the exhaust pipe is closed, the ignition agent spray pipe 16 is opened, the ignition agent spray pipe is closed immediately after a proper amount of ignition agent is sprayed, and then the sample is ignited by the electrothermal wire igniter 12; if the ignition agent is not needed, the electric heating wire igniter 12 is directly used for igniting the sample; then, withdrawing the electric heating wire igniter 12 and the ignition agent nozzle 16 to the side hole 3 of the outer reactor, paying attention to not moving the plunger at the tail part of the device (the electric heating wire igniter 12 and the ignition agent nozzle 16), and immediately turning on the motor connected with the rotating shaft 8 to drive the whole outer reactor to rotate; thereafter, a 360 ° flame photograph of all the inner reactors 13 is taken by a high-speed camera set in advance; after the combustion is basically finished, stopping experiment air intake, opening an exhaust pipe, pumping high-pressure inert gas, pumping flue gas into the exhaust pipe, and introducing the flue gas into a post-treatment device or a detection and analysis device if the flue gas is required to be analyzed; and finally, stopping gas inflow into the detection and analysis device, introducing tail gas into the post-treatment device, waiting for the complete cooling of the device, basically emptying harmful gas, opening the steel reactor cover 1, and collecting combustion ash. The pressure of the whole process is monitored by a bottom plate through hole 9 for air intake and exhaust, and the temperature of a sample in the whole process is monitored by a bottom hole thermocouple 10 and a side hole thermocouple 11. The flame shape and the flame brightness of each direction of the solid fuel combustion are analyzed by the pictures shot by the high-speed camera.
In summary, the solid combustion reactor for flame observation in a centrifugal rotation state mainly ignites solid fuel samples in a plurality of inner reactors with controllable and knowable centrifugal motion, shoots flame photos at multiple angles, and obtains flame parameters and flame state photos at multiple angles in different centrifugal rotation states; wherein, the centrifugal rotation state corresponding to the solid combustion is simultaneously controlled by the position of the inner reactor and the rotation (including angular velocity and angular acceleration) of the outer reactor; meanwhile, the device also has the function of analyzing smoke components.
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are illustrative only and not restrictive, and various modifications which do not depart from the spirit of the present invention and which are intended to be covered by the claims of the present invention may be made by those skilled in the art.
Claims (9)
1. A solid combustion reactor for flame observation under a centrifugal rotation state comprises an outer reactor and an inner reactor, and is characterized in that,
the outer reactor comprises an outer reactor base (4) and an outer reactor cover (1), annular toughened glass (2) is arranged between the outer reactor base (4) and the outer reactor cover (1), and a space surrounded by the outer reactor cover (1), the annular toughened glass (2) and the outer reactor base (4) is an inner space (7) of the outer reactor; the inner wall of the outer reactor base (4) is a cylindrical inner surface; the side wall of the upper part of the outer reactor base (4) is provided with 2 coaxial outer reactor side holes (3), the bottom plate of the outer reactor base (4) is provided with a central threaded hole (8), a rotating shaft is assembled in the central threaded hole (8), and the rotating shaft is externally connected with a motor; an assembly platform support (5) is welded in an inner space (7) of the outer reactor, the height of the assembly platform support (5) is lower than the position of the outer reactor side hole (3), an assembly platform (6) is fixed on the assembly platform support (5), a plurality of square assembly holes (15) are formed in the assembly platform (6), positioning points of the square assembly holes (15) are distributed on two cross intersecting lines at equal intervals, and the intersection point of the cross intersecting lines is superposed with the central point of the assembly platform (6); the square assembly hole (15) is used for installing the inner reactor (13);
the top of the inner reactor (13) is a hemispherical shell, the lower part of the inner reactor is a cylindrical shell communicated with the hemispherical shell, and the inner space of the inner reactor is formed by the communicated hemispherical shell and the cylindrical shell; the bottom of the inner reactor (13) is a quadrangular prism matched with the square assembling hole (15); the side wall of the cylindrical shell is provided with 4 inner reactor side holes (14), and the 4 inner reactor side holes are uniformly distributed in the circumferential direction;
a side hole thermocouple (11) and an ignition agent nozzle (16) are inserted into one side hole (3) of the outer reactor and are used for detecting the temperature near the inner reactor (13) and spraying ignition gas, another side hole thermocouple and an electric heating wire igniter (12) are inserted into the other side hole (3) of the outer reactor, and the ignition agent nozzle (16) and the electric heating wire igniter (12) are inserted into the inner space of the inner reactor (13) through the side hole (14) of the inner reactor;
4 bottom plate through holes (9) are uniformly formed in the same circumference on the bottom plate of the outer reactor base (4), wherein bottom hole thermocouples (10) are respectively inserted into 2 bottom plate through holes (9) and are used for detecting the air temperature near the inner reactor (13);
the rotating shaft (8) matched with a central threaded hole in the bottom plate of the outer reactor rotates under the driving of the motor, the rotating shaft drives the outer reactor to rotate, the inner reactor (13) rotates along with the assembly platform (6), the angular speed and the angular acceleration of the centrifugal motion of the inner reactor (13) are controlled by the rotating shaft (8), and the turning radius of the inner reactor (13) is determined by the assembly position of the inner reactor (13) on the assembly platform (6).
2. The solid combustion reactor for observing flame in a centrifugal rotation state as claimed in claim 1, wherein the upper end of the outer reactor base (4) and the lower end of the reactor cover (1) are provided with clamping grooves, the annular toughened glass (2) is clamped in the clamping grooves, and a sealing gasket is arranged between the annular toughened glass (2) and the clamping grooves.
3. The solid combustion reactor for flame observation under centrifugal spinning conditions according to claim 1, characterized by the fact that the other two bottom through holes (9) on the bottom plate of the outer reactor base (4) are used for detecting the flue gas components.
4. The solid combustion reactor for observing flame under centrifugal rotation state as claimed in claim 1, wherein the side hole thermocouple (11), the bottom hole thermocouple (10), the electric heating wire igniter (12) and the ignition agent nozzle (16) are all provided with screw plugs at their tails, and the screw plugs are sleeved with rubber tubes to ensure that the whole body is airtight after the side hole thermocouple (11), the bottom hole thermocouple (10), the electric heating wire igniter (12) and the ignition agent nozzle (16) are assembled.
5. Solid combustion reactor for flame observation under centrifugal spinning conditions, according to claim 1, characterized in that the electric circuits involved in the side hole thermocouples (11) and bottom hole thermocouples (10) rotate together with the outer reactor without creating wire kinks.
6. The solid combustion reactor for flame observation under centrifugal spinning conditions according to claim 1, characterized in that the outer reactor cover (1) and the outer reactor base (4) are made of steel.
7. Solid combustion reactor for flame observation under centrifugal spinning conditions, according to claim 1, characterized in that the inner reactor (13) is made of tempered glass.
8. The solid combustion reactor for flame observation under centrifugal spinning conditions according to claim 1, characterized in that the top surface of the outer reactor cover (1) is a spherical surface that is upheaval.
9. The solid combustion reactor for flame observation under centrifugal spinning conditions according to claim 1, characterized in that the axis of revolution of the inner reactor (13) is parallel to the axis of the central threaded hole (8) on the outer reactor floor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268928A (en) * | 2020-09-30 | 2021-01-26 | 天津大学 | Solid/liquid combustion reactor for flame disturbance observation |
| CN114965856A (en) * | 2022-05-23 | 2022-08-30 | 西安近代化学研究所 | Propellant combustion flame image acquisition device and observation system under rotation overload condition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281544A (en) * | 1997-11-10 | 2001-01-24 | 古尔梅利国际股份有限公司 | Fuel combustion method and reactor |
| CN102331440A (en) * | 2011-06-22 | 2012-01-25 | 公安部上海消防研究所 | Device and method for measuring combustion characteristics of combustible materials |
| CN102866175A (en) * | 2012-09-10 | 2013-01-09 | 浙江大学 | Boron particle burning observing device for realizing ignition by utilizing high-pressure xenon lamp |
| CN105021652A (en) * | 2015-07-31 | 2015-11-04 | 中山大学 | Self-heating experimental simulation device for combustible solids |
| CN105651809A (en) * | 2015-12-31 | 2016-06-08 | 中国人民解放军国防科学技术大学 | Experimental device for particle combustion under high speed air flow |
| CN106908477A (en) * | 2017-03-08 | 2017-06-30 | 安徽工业大学 | The experimental provision and measuring method of a kind of thermite reaction temperature and burn rate |
| CN110376245A (en) * | 2019-07-08 | 2019-10-25 | 常州大学 | A kind of visual combustion chamber |
-
2020
- 2020-01-16 CN CN202010049458.1A patent/CN111157576A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281544A (en) * | 1997-11-10 | 2001-01-24 | 古尔梅利国际股份有限公司 | Fuel combustion method and reactor |
| CN102331440A (en) * | 2011-06-22 | 2012-01-25 | 公安部上海消防研究所 | Device and method for measuring combustion characteristics of combustible materials |
| CN102866175A (en) * | 2012-09-10 | 2013-01-09 | 浙江大学 | Boron particle burning observing device for realizing ignition by utilizing high-pressure xenon lamp |
| CN105021652A (en) * | 2015-07-31 | 2015-11-04 | 中山大学 | Self-heating experimental simulation device for combustible solids |
| CN105651809A (en) * | 2015-12-31 | 2016-06-08 | 中国人民解放军国防科学技术大学 | Experimental device for particle combustion under high speed air flow |
| CN106908477A (en) * | 2017-03-08 | 2017-06-30 | 安徽工业大学 | The experimental provision and measuring method of a kind of thermite reaction temperature and burn rate |
| CN110376245A (en) * | 2019-07-08 | 2019-10-25 | 常州大学 | A kind of visual combustion chamber |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268928A (en) * | 2020-09-30 | 2021-01-26 | 天津大学 | Solid/liquid combustion reactor for flame disturbance observation |
| CN112268928B (en) * | 2020-09-30 | 2023-04-14 | 天津大学 | Solid/liquid combustion reactor for flame disturbance observation |
| CN114965856A (en) * | 2022-05-23 | 2022-08-30 | 西安近代化学研究所 | Propellant combustion flame image acquisition device and observation system under rotation overload condition |
| CN114965856B (en) * | 2022-05-23 | 2024-03-26 | 西安近代化学研究所 | Propellant burning flame image acquisition device and observation system under rotation overload condition |
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