Single-particle continuous laser ignition test device

Abstract

The invention discloses a single-particle continuous laser ignition test device which comprises a sample feeding module, a control module, a collection module, a gas supply module, an ignition module and a combustion chamber module. According to the device, a plurality of rows and columns of containing holes are formed in the containing plate, single-particle high-energy metal for the laser ignition experiment is placed in the containing holes, the single-particle high-energy metal can accurately correspond to leakage holes formed in the bottom of the leakage box in a one-to-one mode in sequence under the cooperation of other parts, manual adjustment or longer preparation time needed by a traditional method is shortened, and the production efficiency is improved. Therefore, the experiment can be continuous and rapid, and the experiment efficiency is greatly improved. The test device is also provided with an ash hopper flange for collecting products, so that the collection and subsequent characterization analysis of the products can be facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of high-energy metal particle suspension combustion, in particular to a single-particle continuous laser ignition test device. Background Art

[0002] High-energy metals are often used as additives in solid propellants to improve engine performance. In addition to aluminum, magnesium and other high-energy metals, boron as a metalloid is also used in solid propellants; At present, in the study of high-energy metal particles, laser ignition is widely studied due to its advantages such as rapid heating, flexible and stable, and strong anti-interference ability; At present, ignition and combustion experiments usually adopt a static placement single ignition method under normal pressure. The basic principle of this method is to place the high-energy metal particles to be tested in the test device, and then trigger the combustion reaction by laser ignition. However, since this method can only trigger one ignition per experiment, and after ignition, it is necessary to wait for the system to cool down and re-prepare, the overall progress of the experiment is relatively slow. The long waiting time between each experiment not only reduces the efficiency of the research, but also may affect the continuity of the experiment and the timely acquisition of data. This limitation requires researchers to spend more time and energy when doing a large number of experiments, which in turn restricts the rapid accumulation and analysis of experimental results. Therefore, how to optimize the method of ignition and combustion experiments to reduce waiting time and improve experimental efficiency has become an important topic in current research. Summary of the invention

[0003] In view of the above problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is how to optimize the method of ignition combustion experiment to reduce the waiting time.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a single particle continuous laser ignition test device, which includes a sample delivery module, a control module and a collection module.

[0006] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, wherein: the sample delivery module includes a leak box and a receiving plate, and the bottom surface of the receiving plate is attached to the top surface of the bottom of the leak box;

[0007] The bottom of the leakage box is provided with a leakage hole;

[0008] The containing plate is provided with containing holes, and the containing holes are arranged in multiple rows and columns and can correspond to the leaking holes one by one.

[0009] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, wherein: first oval holes are provided on both sides of the leakage box, and the sample delivery module also includes a first positioning piece, and the first positioning piece has two pieces and respectively cooperates with the first oval holes.

[0010] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, the sample delivery module further includes a second positioning member, which is fixedly attached to one side of the holding plate and parallel to the first positioning member.

[0011] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, the sample delivery module further includes a third positioning member, the third positioning member is sleeved on one side of the leakage box, and the first positioning member penetrates and is rotatably connected to the third positioning member.

[0012] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, the sample delivery module further includes a switching member, which is arranged at one end of the second positioning member and cooperates with the third positioning member.

[0013] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, the first positioning member includes a first positioning column, a first positioning spring and a first positioning plate; a first waist circular hole is provided on the side of the leakage box, the first positioning column penetrates and is rotatably connected to the first waist circular hole, a row of second conical grooves is provided on the side of the receiving plate, and one end of the first positioning column close to the center of the leakage box is conical and matches the second conical groove;

[0014] The first positioning plate is arranged at an end of the first positioning column away from the center of the leakage box;

[0015] The first positioning spring is sleeved on the outside of the first positioning column and fits the third positioning member.

[0016] As a preferred solution of the single-particle continuous laser ignition test device of the present invention, wherein: the third positioning member includes a positioning half frame and a positioning pin; the positioning half frame half surrounds the side of the leakage box, and the positioning half frame is provided with a frame hole and a frame groove, the frame hole is arranged at both ends of the positioning half frame and is directly opposite to the holding plate, and the frame groove runs through both ends of the positioning half frame;

[0017] The positioning pin has two parts and cooperates with the frame groove. The positioning pin includes a pin circular hole, a pin waist circular hole and a pin column; the pin circular hole is arranged at the end of the positioning pin away from the positioning half frame; the pin waist circular hole is arranged at the end of the positioning pin close to the positioning half frame; the pin column is arranged on the side of the positioning pin and cooperates with the reversing member.

[0018] As a preferred solution of the single-particle continuous laser ignition test device described in the present invention, wherein: the second positioning member includes a second positioning column, a second positioning plug, a guide screw and a positioning shell; the positioning shell is arranged on the side of the holding plate where the second conical groove is not arranged; the second positioning column passes through and is rotatably connected to the positioning shell, the second positioning column is parallel to the first positioning column, first limit blocks are arranged at both ends of the second positioning column, and rotary grooves are arranged in the two first limit blocks, and a row of third conical grooves is arranged on one side of the rotary groove; the second positioning plug is arranged inside the positioning shell, and one end of the second positioning plug cooperates with the third conical groove; one end of the guide screw cooperates with the rotary groove.

[0019] As a preferred embodiment of the single particle continuous laser ignition test device of the present invention, the reversing member includes a driving shaft, a driven shaft, a fixed bevel gear, a reversing bevel gear, a reversing gear shaft, a reversing split shaft, a reversing disk, a connecting shaft and a connecting cam; the fixed bevel gear has three pieces, the reversing bevel gear has one piece, and the fixed bevel gear and the reversing bevel gear are meshed;

[0020] The driving shaft is arranged at a position away from and parallel to the center of the fixed bevel gear of the third positioning member;

[0021] The driven shaft is arranged close to and parallel to the center of the fixed bevel gear of the third positioning member;

[0022] The reversing gear shaft is arranged at the center of the fixed bevel gear perpendicular to the third positioning member;

[0023] The reversing split shaft and the reversing bevel gear are centrally matched;

[0024] The commutation disc is arranged in the middle of the commutation split shaft;

[0025] The connecting shaft penetrates through and rotatably connects the reversing gear shaft and the reversing split shaft;

[0026] The two ends of the connecting protrusion are sleeved on the driving shaft and the driven shaft, and the pin penetrates and is rotatably connected to the connecting protrusion;

[0027] The connecting convex frame is provided with a limiting convex hole, and the limiting convex hole cooperates with the reversing disc.

[0028] As a preferred solution of the single particle continuous laser ignition test device of the present invention, wherein: a control module is connected to the sample delivery module, including a computer, a synchronous trigger device and a controller, and the computer is connected to the synchronous trigger device and the controller; and

[0029] The acquisition module is connected to the control module and comprises a fiber optic spectrometer, a high-speed camera, a dual colorimetric camera, a pressure sensor, a displacement sensor, a temperature sensor and a collector.

[0030] The beneficial effects of the present invention are as follows: the multiple rows and columns of holding holes provided on the holding plate, in which single particles for laser ignition experiments are placed, can be accurately matched one by one with the leakage holes provided at the bottom of the leakage box with the cooperation of other parts, thus shortening the manual adjustment or longer preparation time required by the traditional method, allowing the experiment to be continuous and rapid, and greatly improving the experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0032] Figure 1 This is the structural diagram of the sample delivery module of the single-particle continuous laser ignition test device.

[0033] Figure 2 This is the structural diagram of the leak box and the receiving plate of the single-particle continuous laser ignition test device.

[0034] Figure 3 This is a structural diagram of the first positioning component of the single-particle continuous laser ignition test device.

[0035] Figure 4 This is a structural diagram of the second positioning component of the single-particle continuous laser ignition test device.

[0036] Figure 5 This is an exploded view of the second positioning part of the single-particle continuous laser ignition test device.

[0037] Figure 6 This is a structural diagram of the third positioning component of the single-particle continuous laser ignition test device.

[0038] Figure 7 This is a front view of the commutator of the single-particle continuous laser ignition test device.

[0039] Figure 8 This is the axonometric view of the commutator of the single-particle continuous laser ignition test device.

[0040] Fig. 9 This is the overall schematic diagram of the single-particle continuous laser ignition test device.

[0041] Fig.10 This is the overall schematic diagram of the single-particle continuous laser ignition test device. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0045] Example 1, reference Figures 1 to 8 , which is the first embodiment of the present invention, and provides a single-particle continuous laser ignition test device. The single-particle continuous laser ignition test device includes a sample delivery module 100, a control module 500 and a collection module 400.

[0046] Specifically, the sample delivery module 100 includes a leakage box 101 and a receiving plate 102 , and the bottom surface of the receiving plate 102 is attached to the bottom top surface of the leakage box 101 .

[0047] The leakage box 101 is used to limit the movement range of the holding plate 102 and other device parts, and at the same time provide leakage conditions for high-energy metal used in single-particle laser ignition experiments at a specific position;

[0048] The receiving plate 102 is used to place high-energy metal for single-particle laser ignition experiments, and the receiving plate 102 can translate in the leakage box 101 .

[0049] A leakage hole 101b is provided at the bottom of the leakage box 101;

[0050] The containing plate 102 is provided with containing holes 102b, which are arranged in multiple rows and columns and correspond one to one with the leaking holes 101b.

[0051] When the receiving plate 102 translates in the leakage box 101, in coordination with other parts of the device, the receiving plate 102 can only move horizontally or vertically a specific distance at a time to ensure that before and after each translation, there is a receiving hole 102b facing the leakage hole 101b, and each receiving hole 102b can face the leakage hole 101b.

[0052] When in use, high-energy metal for single-particle laser ignition experiment is placed on each holding hole 102b on the holding plate 102, and the corner holding hole 102b and the leakage hole 101b are aligned. During the experiment, the opening and closing of the leakage hole 101b and the translation of the holding plate 102 are controlled, so that the high-energy metal for single-particle laser ignition experiment can be quickly switched, shortening the manual adjustment or longer preparation time required by traditional methods, so that the experiment can be continuous and fast, greatly improving the experimental efficiency.

[0053] Example 2, reference Figures 1 to 10 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0054] Specifically, first oval holes 101 a are provided on both sides of the leakage box 101 , and the sample delivery module 100 further includes a first positioning member 103 , and the first positioning member 103 has two pieces and respectively cooperates with the first oval holes 101 a .

[0055] The first waisted hole 101a is used to limit the first positioning member 103, and the first positioning member 103 is used to position the holding plate 102 from both sides. Only when the holding plate 102 moves to the position where the holding hole 102b and the leakage hole 101b are opposite, the first positioning member 103 can keep the device stable, so that the holding plate 102 is accurately positioned in the horizontal direction.

[0056] Specifically, the sample delivery module 100 also includes a second positioning member 104, which is fixedly attached to one side of the holding plate 102 and parallel to the first positioning member 103. During the rotation, the second positioning member 104 will adjust the longitudinal position of the holding plate 102. Similarly, the second positioning member 104 will move the holding plate 102 to a position where the holding hole 102b and the leakage hole 101b are opposite.

[0057] The first oval hole 101 a is also used to limit the second positioning member 104 , and the second positioning member 104 can translate in the first oval hole 101 a .

[0058] The first positioning member 103 cooperates with the second positioning member 104 so that when the holding plate 102 moves, the device is stable only when the holding hole 102b and the leakage hole 101b are facing each other. This increases the fault tolerance of the device, improves the accuracy of the experiment, avoids repeated adjustments to face the holding hole 102b and the leakage hole 101b, and speeds up the experiment.

[0059] Specifically, the sample delivery module 100 further includes a third positioning member 105 , which is sleeved on one side of the leakage box 101 , and the first positioning member 103 penetrates through and is rotatably connected to the third positioning member 105 .

[0060] The third positioning member 105 is used to limit the first positioning member 103 and the second positioning member 104, so as to prevent the first positioning member 103 from translating in the first waist hole 101a and ensure that the second positioning member 104 does not tilt in the first waist hole 101a; at the same time, it is ensured that the distance between the first positioning member 103 and the second positioning member 104 can be changed, so as to facilitate the positioning of different receiving holes 102b.

[0061] Specifically, the sample delivery module 100 further includes a switching member 106 , which is disposed at one end of the second positioning member 104 and cooperates with the third positioning member 105 .

[0062] The second positioning member 104 changes the position of the receiving plate 102 by rotating, and the reversing member 106 is used to reverse the rotation direction of the second positioning member 104 so that the receiving plate 102 can move back and forth.

[0063] Specifically, the first positioning member 103 includes a first positioning column 103a, a first positioning spring 103b and a first positioning plate 103c; a first waisted circular hole 101a is provided on the side of the drain box 101, and the first positioning column 103a penetrates and is rotatably connected to the first waisted circular hole 101a; a row of second conical grooves 102a are provided on the side of the serving plate 102, and one end of the first positioning column 103a close to the center of the drain box 101 is conical and matches the second conical groove 102a;

[0064] The first positioning plate 103c is disposed at one end of the first positioning column 103a away from the center of the leakage box 101;

[0065] The first positioning spring 103 b is sleeved on the outside of the first positioning column 103 a and fits the third positioning member 105 .

[0066] The first positioning column 103a is directly opposite to the second conical groove 102a. When the serving plate 102 moves, due to the existence of the first positioning spring 103b and the first positioning disk 103c, only when the end of the first positioning column 103a cooperates with the second conical groove 102a, the first positioning spring 103b can release the most compressed elastic force. This ensures that within a certain range, the serving plate 102 has only a limited number of choices in the direction perpendicular to the first positioning column 103a, and will be pushed back to the limited number of choices by the first positioning member 103 at other positions.

[0067] Specifically, the third positioning member 105 includes a positioning half frame 105a and a positioning pin 105b; the positioning half frame 105a half surrounds the side of the drain box 101, and the positioning half frame 105a is provided with a frame hole 105a-1 and a frame groove 105a-2, the frame hole 105a-1 is set at both ends of the positioning half frame 105a and is directly opposite to the holding plate 102, and the frame groove 105a-2 runs through both ends of the positioning half frame 105a;

[0068] The frame hole 105a-1 is used to cooperate with the first positioning member 103 to prevent the first positioning member 103 from translating in the first waist hole 101a;

[0069] The frame groove 105a-2 is used to facilitate the movement of the positioning pin 105b in the positioning half frame 105a.

[0070] The positioning pin 105b has two parts and cooperates with the frame groove 105a-2. The positioning pin 105b includes a pin circular hole 105b-1, a pin waist circular hole 105b-2 and a pin column 105b-3; the pin circular hole 105b-1 is arranged at the end of the positioning pin 105b away from the positioning half frame 105a; the pin waist circular hole 105b-2 is arranged at the end of the positioning pin 105b close to the positioning half frame 105a; the pin column 105b-3 is arranged on the side of the positioning pin 105b and cooperates with the reversing member 106.

[0071] The pin hole 105b-1 is used to cooperate with the second positioning member 104 to ensure that the second positioning member 104 does not tilt in the first waist hole 101a;

[0072] The pin waist circular hole 105b-2 is used to avoid the first positioning member 103, ensuring that the positioning pin 105b can move in the positioning half frame 105a;

[0073] The pin 105b-3 is used to cooperate with the switching member 106 to prevent the switching member 106 from rotating as a whole along with the second positioning member 104;

[0074] The third positioning member 105 is used to limit the positions of the first positioning member 103 and the second positioning member 104 , and also to limit the rotation of the switching member 106 , so that the first positioning member 103 , the second positioning member 104 and the switching member 106 can fully function.

[0075] Specifically, the second positioning member 104 includes a second positioning column 104a, a second positioning plug 104b, a guide screw 104c and a positioning shell 104d; the positioning shell 104d is arranged on the side of the holding plate 102 where the second conical groove 102a is not arranged; the second positioning column 104a passes through and is rotatably connected to the positioning shell 104d, the second positioning column 104a is parallel to the first positioning column 103a, and first limit blocks 104a-1 are arranged at both ends of the second positioning column 104a, and rotary grooves 104a-2 are arranged in the two first limit blocks 104a-1, and a row of third conical grooves 104a-3 is arranged on one side of the rotary groove 104a-2; the second positioning plug 104b is arranged inside the positioning shell 104d, and one end of the second positioning plug 104b cooperates with the third conical groove 104a-3; one end of the guide screw 104c cooperates with the rotary groove 104a-2.

[0076] The first limiting block 104a-1 is used to prevent the positioning shell 104d from being separated from the limited position;

[0077] The guide screw 104c cooperates with the rotation groove 104a-2 to adjust the position of the positioning shell 104d when the second positioning column 104a rotates;

[0078] The positioning housing 104d is used to install the second positioning column 104a, the second positioning plug 104b and the guide screw 104c;

[0079] The second positioning plug 104b includes a spring and a steel ball, and the steel ball faces the third conical groove 104a-3, so as to ensure that the plate 102 has only a limited number of options in the direction parallel to the second positioning column 104a, and will be pushed back to the limited number of options by the second positioning member 104 at other positions.

[0080] In this way, the first positioning member 103 and the second positioning member 104 ensure that only a specific position of the holding plate 102 can remain stable in the horizontal and vertical directions, and also ensure that when the holding plate 102 is translated, there is always a holding hole 102b and a leakage hole 101b facing each other.

[0081] The positioning shell 104d has a first shell hole 104d-1 that matches with the second positioning column 104a; a second shell hole 104d-2 that matches with the second positioning plug 104b; and a third shell hole 104d-3 that matches with the guide screw 104c.

[0082] There is also a button 104d-4, which is disposed on the top of the positioning shell 104d and is used to adjust the position of the holding plate 102 perpendicular to the second positioning column 104a.

[0083] Specifically, the reversing member 106 includes a driving shaft 106a, a driven shaft 106b, a fixed bevel gear 106c, a reversing bevel gear 106d, a reversing gear shaft 106e, a reversing split shaft 106f, a reversing plate 106g, a connecting shaft 106h and a connecting cam 106i; the fixed bevel gear 106c has three pieces, the reversing bevel gear 106d has one piece, and the fixed bevel gear 106c and the reversing bevel gear 106d are meshed;

[0084] The driving shaft 106a is disposed at a center of the fixed bevel gear 106c which is away from and parallel to the third positioning member 105;

[0085] The driven shaft 106b is arranged close to and parallel to the center of the fixed bevel gear 106c of the third positioning member 105;

[0086] The reversing gear shaft 106e is arranged at the center of the fixed bevel gear 106c which is perpendicular to the third positioning member 105;

[0087] The reversing split shaft 106f and the reversing bevel gear 106d are centrally matched;

[0088] The reversing disc 106g is arranged in the middle of the reversing split shaft 106f;

[0089] The connecting shaft 106h penetrates and rotatably connects the reversing gear shaft 106e and the reversing split shaft 106f;

[0090] The two ends of the connecting protrusion 106i are sleeved on the driving shaft 106a and the driven shaft 106b, and the pin 105b-3 penetrates and rotates the connecting protrusion 106i;

[0091] A limiting convex hole 106j is provided on the connecting convex frame 106i, and the limiting convex hole 106j cooperates with the reversing plate 106g.

[0092] The fixed bevel gear 106c is fixedly connected to the driving shaft 106a, the driven shaft 106b, and the reversing gear shaft 106e;

[0093] The reversing bevel gear 106d and the connected reversing split shaft 106f are slidably connected and cannot rotate relative to each other.

[0094] The reversing split shaft 106f and the reversing gear shaft 106e are coaxial, the driving shaft 106a and the driven shaft 106b are coaxial, and the four bevel gears form a frame shape and mesh;

[0095] When the reversing split shaft 106f and the reversing gear shaft 106e are not in contact, the limiting convex hole 106j and the reversing plate 106g cooperate, and the bevel gears can rotate; at this time, the rotation of the driving shaft 106a will cause the driven shaft 106b to rotate in the opposite direction through the bevel gear;

[0096] When the reversing split shaft 106f is pressed down to allow the split tip to be inserted between the teeth of the reversing gear shaft 106e, the bevel gears are locked and cannot rotate. The rotation of the active shaft 106a will cause the driven shaft 106b to rotate in the same direction through the bevel gears. In this way, the rotation direction of the driven shaft 106b is changed without changing the direction of the active shaft 106a, thereby changing the movement direction of the supporting plate 102.

[0097] When the receiving holes 102b have completed one row, the position of the receiving plate 102 is switched by pressing button 104d-4 so that the receiving holes 102b in a new row are aligned with the leakage holes 101b.

[0098] The sample delivery module 100 is connected to the control module 500 via a motor.

[0099] Specifically, the control module 500 is connected to the sample delivery module 100 , and includes a computer 501 , a synchronous trigger device 502 and a controller 503 . The computer 501 is connected to the synchronous trigger device 502 and the controller 503 .

[0100] The control module 500 controls the motor and the acquisition module 400 to operate synchronously or at intervals of several seconds, thereby providing multiple operating modes for the ignition and measurement processes.

[0101] The acquisition module 400 is connected to the control module 500 , and includes a fiber optic spectrometer 401 , a high-speed camera 402 , a dual colorimetric camera 403 , a pressure sensor 404 , a displacement sensor 405 , a temperature sensor 406 and a collector 407 .

[0102] The fiber spectrometer 401, the high-speed camera 402, the dual colorimetric camera 403, the pressure sensor 404, the displacement sensor 405, and the temperature sensor 406 are connected to the collector 407 via the synchronous trigger device 502. The synchronous trigger device 502 mainly ensures that the circuits of the fiber spectrometer 401, the high-speed camera 402, the dual colorimetric camera 403, the pressure sensor 404, the displacement sensor 405, and the temperature sensor 406 connected to the collector 407 work synchronously or work with a delay of several seconds, thereby improving the stability and reliability of the system and achieving precise control.

[0103] The acquisition module 400 is used to collect data generated in the experiment.

[0104] The control module 500 controls the sample delivery module 100 to deliver samples and conduct experiments one by one, and the acquisition module 400 is used to collect data generated in the experiment.

[0105] Example 3, reference Figures 1 to 10 , which is the third embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0106] The single-particle continuous laser ignition test device further includes a gas supply module 200 , an ignition module 300 and a combustion chamber module 600 .

[0107] The gas supply module 200 is used to make the combustion chamber 600 reach the atmosphere and pressure conditions required for the experiment;

[0108] The ignition module 300 is used to ignite and assist the combustion of single particles using different powers;

[0109] The combustion chamber module 600 is used to ensure that a single particle completes combustion in a closed and stable environment at a set temperature.

[0110] The gas supply module 200 includes a gas cylinder 201, a flow regulating valve 202, a mass flow meter 203, and a gas mixer 204;

[0111] There are three gas cylinders 201 , three flow regulating valves 202 , and three mass flow meters 203 . Two ends of the flow regulating valve 202 are connected to the gas cylinder 201 and the mass flow meter 203 , respectively. The three mass flow meters 203 are connected to the gas mixer 204 .

[0112] The ignition module 300 includes a laser igniter 301 and a voltage-stabilized power supply 302;

[0113] Laser igniter 301 is a variable power CO2 Laser igniter, adjustable from 120 to 600W, laser duration 500ms or 1000ms;

[0114] The combustion chamber module 600 includes a top plate 601, a first observation window 602, a second observation window 603, a laser incident window 604, a heating layer 605, an air inlet 606, a pressure relief valve 607, a ceramic grid 608, a funnel 609, a funnel bracket 610, an outlet notch 611, a bracket 612, and an ash hopper flange 613;

[0115] The gas mixer 204 is connected to the gas inlet 606, and the laser igniter 301 is vertically arranged with the top plate 601; the heating layer 605 is connected to the controller 503 and the voltage-stabilized power supply 302 in sequence;

[0116] The pressure sensor 404, displacement sensor 405, and temperature sensor 406 are located inside the combustion chamber module 600, and the fiber optic spectrometer 401, high-speed camera 402, and dual colorimetric camera 403 are located outside the combustion chamber module 600. When in use, the gas cylinder 201, flow regulating valve 202, mass flow meter 203, and gas mixer 204 in the gas supply module 200 are connected in sequence, the flow regulating valve 202 is opened, and the gas flow is adjusted by the mass flow meter 203 to reach the preset flow, and then the gas is mixed by the gas mixer 204, and enters the combustion chamber module 600 through the air inlet 606, providing the gas required for the experiment and achieving the pressure environment required for the experiment, and at the same time providing a weak airflow into the funnel 609 separately to suspend the particles and slowly fall;

[0117] The gas will pass through the ceramic grid 608 when entering the combustion chamber module 600, so as to prevent the gas from directly blowing on other components when flowing into the combustion chamber module 600, thereby affecting the falling of particles, etc.;

[0118] The laser igniter 301 in the ignition module 300 is connected to the voltage-stabilized power supply 302, which is directly facing the center of the funnel 609 in the combustion chamber module 600 and deviates from the center of the ash hopper flange 613 to prevent the laser from performing secondary ignition on the combustion products;

[0119] The inner wall of the combustion chamber module 600 is coated with a heat-insulating material, the outlet slot 611 is sealed with a sealant, and each connection is sealed with a sealing ring. The laser incident window 604 on the top plate 601 of the combustion chamber module 600 is made of sapphire glass, and the first observation window 602 and the second observation window 603 are made of quartz glass. The heating layer 605 on the inner wall of the rear side of the combustion chamber module 600 provides it with a suitable experimental temperature. The funnel bracket 610 and the funnel 609 are used in conjunction with each other. A sample delivery module 100 is installed above the funnel bracket 610. There is an ash hopper flange 613 for collecting combustion products at the bottom of the combustion chamber module 600. The ash hopper flange 613 is conical in shape and is tightly connected to the internal thread at the bottom of the combustion chamber module 600. The bottom of the combustion chamber module 600 is supported by a bracket 612. As a deformation, a support wheel can be installed at the bottom of the bracket to facilitate movement. The entire combustion chamber module 600 can withstand a pressure of 5MPa.

[0120] The fiber optic spectrometer 401 is used to monitor the changes in the spectrum of the entire time period during the combustion of a single particle, so as to study the changes in the combustion intensity of a single particle in different environmental atmospheres, and can monitor the characteristic spectrum of the intermediate products of the combustion of a single particle, the appearance and changes of its wavelength signal, and study the changes in its ignition delay time and reaction. The high-speed camera 402 is used to record the entire combustion process of a single particle, obtain an optical image of the morphology of the single particle flame and the ignition combustion time of the entire combustion period. The dual colorimetric camera 403 can measure the surface temperature of a single particle during the combustion process to reflect the changes in the combustion of a single particle in different environmental atmospheres.

[0121] Before the experiment begins, in order to meet the environmental atmosphere required for the experiment, it is necessary to monitor the inside of the combustion chamber module 600 through the pressure sensor 404 and the temperature sensor 406 connected to the collector 407 to achieve the conditions required for the experiment. When the single-particle continuous laser ignition test device is in use, before the experiment begins, open the pressure relief valve 607, and introduce the gas required for the experiment into the combustion chamber 600 for a period of time to remove the air in the combustion chamber and ensure the purity of the gas in the combustion chamber 600, and then close the pressure relief valve 607. Add single particles of high-energy metal to the holding hole 102b of the holding plate 102. Different or the same single particles of high-energy metal can be added to each row, and cover the top plate 601 to ensure that the combustion chamber 600 is sealed. Use the computer 501 to set the heating layer 605 for heating, and at the same time open the flow control valve 202 of the gas cylinder 201 and adjust the mass flowmeter 203, and provide a weak airflow from the side hole below the funnel into the funnel to suspend the particles and slowly fall. The computer 501 is connected to the synchronous trigger device 502, and uses the pressure sensor 404 and the temperature sensor 406 to monitor the temperature and pressure in the combustion chamber 600 to achieve the atmosphere environment required for the experiment.

[0122] During the test, the computer 501 controls the motor and the synchronous trigger device 502, so that the displacement sensor 405 works synchronously with the motor. The motor drives the sample delivery module 100 to work. When the displacement sensor 405 detects the particles in the funnel 609, the motor stops working immediately, and the synchronous trigger device 502 is turned on at the same time. The fiber spectrometer 401, the high-speed camera 402, the dual colorimetric camera 403 and the laser igniter 301 work immediately to ignite the particles, while monitoring the signals and various parameters in the combustion process. The laser igniter 301 stops after the set duration, and the synchronous trigger device 502 stops after a delay of 0.5 seconds. At this time, the test of one particle is completed. When it is necessary to repeat the experiment or the combustion test of the next particle, the sample delivery module 100 can be controlled to replace the holding hole 102b aligned with the leak hole 101b, and the subsequent operation can be repeated.

[0123] When the holding holes 102b have completed a row or the entire plate, the heating layer 605 is powered off, the air supply module 200 is closed, and the pressure relief valve 607 is opened. After the air pressure returns to normal pressure, if the next experiment is to repeat the test particles, the combustion products can be collected after the entire test is completed. Otherwise, it is necessary to unscrew the ash hopper flange 613 to collect and classify the combustion products. After the collection is completed, tighten the ash hopper flange 613. Then switch the position of the holding plate 102 through the button 104d-4 or add new experimental particles to the holding plate 102, so that the holding holes 102b in the new row are aligned with the leakage hole 101b. Then repeat the operation and complete the combustion test of all particles.

[0124] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A single particle continuous laser ignition test device, characterized in that: include, The sample delivery module (100) comprises a leakage box (101) and a receiving plate (102), wherein the bottom surface of the receiving plate (102) is attached to the top surface of the bottom of the leakage box (101); The bottom of the leakage box (101) is provided with a leakage hole (101b); The containing plate (102) is provided with containing holes (102b), the containing holes (102b) are arranged in multiple rows and columns, and can correspond one-to-one with the leaking holes (101b).

2. The single particle continuous laser ignition test device according to claim 1, characterized in that: The leakage box (101) is provided with first oval holes (101a) on both sides. The sample delivery module (100) further comprises a first positioning member (103). The first positioning member (103) has two pieces and respectively cooperates with the first oval holes (101a).

3. The single particle continuous laser ignition test device according to claim 2, characterized in that: The sample delivery module (100) further comprises a second positioning member (104), wherein the second positioning member (104) is fixedly attached to one side of the holding plate (102) and is parallel to the first positioning member (103).

4. The single particle continuous laser ignition test device as claimed in claim 3, characterized in that: The sample delivery module (100) further comprises a third positioning member (105), wherein the third positioning member (105) is sleeved on one side of the leakage box (101), and the first positioning member (103) penetrates through and is rotatably connected to the third positioning member (105).

5. The single particle continuous laser ignition test device according to claim 4, characterized in that: The sample delivery module (100) further comprises a reversing member (106), wherein the reversing member (106) is arranged at one end of the second positioning member (104) and cooperates with the third positioning member (105).

6. The single particle continuous laser ignition test device according to claim 5, characterized in that: The first positioning member (103) comprises a first positioning column (103a), a first positioning spring (103b) and a first positioning plate (103c); a first waisted circular hole (101a) is provided on the side of the drain box (101), the first positioning column (103a) penetrates through and is rotatably connected to the first waisted circular hole (101a), a row of second conical grooves (102a) is provided on the side of the holding plate (102), and one end of the first positioning column (103a) close to the center of the drain box (101) is conical and matches with the second conical groove (102a); The first positioning plate (103c) is arranged at an end of the first positioning column (103a) away from the center of the drain box (101); The first positioning spring (103b) is sleeved on the outside of the first positioning column (103a) and fits the third positioning member (105).

7. The single particle continuous laser ignition test device according to claim 6, characterized in that: The third positioning member (105) comprises a positioning half frame (105a) and a positioning pin (105b); the positioning half frame (105a) half surrounds the side of the drain box (101); the positioning half frame (105a) is provided with a frame hole (105a-1) and a frame groove (105a-2); the frame hole (105a-1) is arranged at both ends of the positioning half frame (105a) and is directly opposite to the holding plate (102); the frame groove (105a-2) runs through both ends of the positioning half frame (105a); The positioning pin (105b) has two parts and cooperates with the frame groove (105a-2), and the positioning pin (105b) includes a pin circular hole (105b-1), a pin waist circular hole (105b-2) and a pin column (105b-3); the pin circular hole (105b-1) is arranged at an end of the positioning pin (105b) away from the positioning half frame (105a); the pin waist circular hole (105b-2) is arranged at an end of the positioning pin (105b) close to the positioning half frame (105a); the pin column (105b-3) is arranged on the side of the positioning pin (105b) and cooperates with the reversing member (106).

8. The single particle continuous laser ignition test device according to claim 7, characterized in that: The second positioning member (104) comprises a second positioning column (104a), a second positioning plug (104b), a guide screw (104c) and a positioning shell (104d); the positioning shell (104d) is arranged on the side of the holding plate (102) where the second conical groove (102a) is not arranged; the second positioning column (104a) penetrates through and is rotatably connected to the positioning shell (104d); the second positioning column (104a) is parallel to the first positioning column (103a); the second positioning column (104a) ) are provided with first limit blocks (104a-1) at both ends, a rotary groove (104a-2) is provided in each of the two first limit blocks (104a-1), and a row of third conical grooves (104a-3) is provided on one side of the rotary groove (104a-2); the second positioning plug (104b) is arranged inside the positioning shell (104d), and one end of the second positioning plug (104b) cooperates with the third conical groove (104a-3); one end of the guide screw (104c) cooperates with the rotary groove (104a-2).

9. The single particle continuous laser ignition test device according to claim 7 or 8, characterized in that: The reversing member (106) comprises a driving shaft (106a), a driven shaft (106b), a fixed bevel gear (106c), a reversing bevel gear (106d), a reversing gear shaft (106e), a reversing split shaft (106f), a reversing plate (106g), a connecting shaft (106h) and a connecting cam (106i); the fixed bevel gear (106c) has three pieces, the reversing bevel gear (106d) has one piece, and the fixed bevel gear (106c) and the reversing bevel gear (106d) are meshed; The driving shaft (106a) is arranged at a center of the fixed bevel gear (106c) away from and parallel to the third positioning member (105); The driven shaft (106b) is arranged close to and parallel to the center of the fixed bevel gear (106c) of the third positioning member (105); The reversing gear shaft (106e) is arranged at the center of the fixed bevel gear (106c) perpendicular to the third positioning member (105); The reversing split shaft (106f) and the reversing bevel gear (106d) are centrally matched; The commutation disc (106g) is arranged in the middle of the commutation split shaft (106f); The connecting shaft (106h) penetrates through and rotatably connects the reversing gear shaft (106e) and the reversing split shaft (106f); The two ends of the connecting protrusion (106i) are sleeved on the driving shaft (106a) and the driven shaft (106b), and the pin (105b-3) penetrates and is rotatably connected to the connecting protrusion (106i); The connecting protrusion (106i) is provided with a limiting protrusion hole (106j), and the limiting protrusion hole (106j) cooperates with the reversing plate (106g).

10. The single particle continuous laser ignition test device according to claim 9, characterized in that: Also includes, A control module (500) is connected to the sample delivery module (100), comprising a computer (501), a synchronous trigger device (502) and a controller (503), wherein the computer (501) is connected to the synchronous trigger device (502) and the controller (503); and, The acquisition module (400) is connected to the control module (500), and includes a fiber optic spectrometer (401), a high-speed camera (402), a dual colorimetric camera (403), a pressure sensor (404), a displacement sensor (405), a temperature sensor (406) and a collector (407).

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