Experimental device for sampling combustion soot of space station

Abstract

The invention provides an experimental device for sampling combustion soot of a space station, and belongs to the technical field of microgravity combustion and combustion diagnosis systems, and the experimental device specifically comprises a mounting seat which is used for being connected with a combustor mounting position on a gas experimental plug-in; the multi-jet combustor is mounted on the mounting seat, the multi-jet combustor comprises a fuel pipe and a wake gas channel, the end, away from the mounting seat, of the multi-jet combustor serves as a combustion end, and fuel and wake gas are ignited after being converged at the combustion end; the sampling assembly is detachably mounted on the combustion end, the sampling assembly comprises a plurality of probes, and the sampling ends of the probes are in contact with the flame of fuel combustion so as to sample the combustion soot of the fuel; the protective cover is detachably connected with the sampling assembly, the protective cover is used for surrounding the probe, and the protective cover is connected with the sampling assembly after the fuel is combusted and the sampling assembly completes sampling. The device can be applied to a space station combustion scientific experiment system, and the functions of flame ignition, soot sample collection and the like are achieved.

Description

Technical Field

[0001] The present application relates to the field of microgravity combustion and combustion diagnostic systems, and in particular to an experimental device for sampling carbon soot from combustion in a space station. Background Art

[0002] Soot formation is one of the important phenomena in the combustion process of aviation fuel. Controlling soot formation is an important issue related to the flight safety and service life of aircraft. The soot generated during the combustion of aviation fuel will precipitate, aggregate and grow on the surface of nozzles and other parts to form carbon deposits. When it reaches a certain level, it will even block the engine nozzle, causing the engine's fuel consumption to increase, the power performance to decrease, and the flame to be severely ablated, posing a serious threat to the flight safety of the aircraft. To achieve soot control, it is urgent to conduct in-depth research on the mechanism of soot generation. Under microgravity conditions, natural convection is weakened or even eliminated, and combustion and flow problems are simplified. At this time, the flame volume is larger than that on the ground, the radiation intensity and carbon black content are higher, and the residence time is longer, which is an ideal condition for studying the law of soot generation.

[0003] The space station has been fully built and has entered the application and development stage. The space station combustion science experimental system has the relevant conditions for conducting microgravity combustion experiments. In order to conduct combustion experiments and collect soot samples on the space station, a set of burners and sampling devices that match the space station experimental equipment is required, and the design must be optimized in terms of ergonomics, reliability, etc. Summary of the invention

[0004] In view of this, the present application provides an experimental device for sampling carbon soot from space station combustion, which solves the problems in the prior art and can be applied to the space station combustion science experiment system to achieve functions such as igniting flames and collecting carbon soot samples.

[0005] The experimental device for sampling carbon soot from combustion in a space station provided in this application adopts the following technical solution:

[0006] An experimental device for sampling combustion soot in a space station, which is used to be installed on a gas experiment plug-in in space, and includes:

[0007] A mounting seat, used to connect with the burner mounting position on the gas experiment plug-in;

[0008] A multi-jet burner is mounted on the mounting seat, the multi-jet burner comprises a fuel pipe and a wake gas channel, the fuel pipe is used to transport fuel, the wake gas channel is used to transport wake gas, an end of the multi-jet burner away from the mounting seat is used as a combustion end, and the fuel and the wake gas are ignited after merging at the combustion end;

[0009] A sampling assembly is detachably mounted on the combustion end, the sampling assembly includes a plurality of probes, the sampling ends of the probes contact the flame of the fuel combustion to sample the combustion soot of the fuel;

[0010] The protective cover is detachably connected to the sampling assembly, and is used to surround the probe. The protective cover is separated from the sampling assembly when the fuel is burning, and is connected to the sampling assembly after the fuel is burned and the sampling assembly completes sampling.

[0011] Optionally, the multi-jet burner includes a base, a support, an outer tube, a top cover and a plurality of the fuel pipes, the base being provided with a central through hole and accompanying air through holes distributed around the central through hole, the central through hole being used for allowing the plurality of the fuel pipes to pass through, the fuel pipe being fixed to the base through the support, the outer tube being connected to the base around one end, and the outer tube being surrounded by the support and the outer circumference of the fuel pipe, the channel between the outer tube and the fuel pipe being connected to the accompanying air through hole, the top cover being connected to the other end of the outer tube, the sampling assembly being mounted on the top cover, the top cover being provided with an opening, the end of the fuel pipe away from the base passing through the opening, the accompanying air through hole, the inner part of the outer tube and the opening forming the accompanying air channel.

[0012] Optionally, a rectifying plate is provided in the opening of the top cover, a passage for the accompanying gas to pass through is provided on the rectifying plate, and a hole for the fuel pipe to pass through is provided on the rectifying plate.

[0013] Optionally, the top cover is provided with a first guide groove, one end of the first guide groove passes through the outer peripheral side surface of one side of the top cover, the sampling assembly includes a sampling base, a mounting plate and a pressure cover, the sampling base includes a first guide rail for slidingly cooperating with the first guide groove, the mounting plate is fixed on the sampling base, a plurality of first mounting positions for mounting probes are provided on the mounting plate, the pressure cover is provided with a through hole for the probe to pass through, the pressure cover is fixed to the mounting plate by bolts, and the sampling base is connected to the top cover by a detachable clamping structure;

[0014] The end face of the top cover away from the base is a first end face, the first end face is perpendicular to the length direction of the outer tube, and the length of the first guide groove is parallel to the first end face.

[0015] Optionally, the sampling assembly also includes a second base connected to the sampling base, the second base is provided with a second guide groove perpendicular to the first end face, the protective cover includes a cover body and a second guide rail connected to each other, the second guide rail is used to slide in cooperation with the second guide groove, after the first guide rail and the second guide groove cooperate, the second base and the cover body are connected by a detachable clamping structure, the cover body is provided with an opening at one end facing the sampling base, when the protective cover and the second base cooperate, the probe passes through the opening and enters the cover body, a plurality of L-shaped rods are provided in the cover body, the L-shaped rods are located between the plurality of probes, the L-shaped rods and the openings are arranged correspondingly, one end of the L-shaped rod is parallel to the first end face, and the other end of the L-shaped rod is perpendicular to the second end face.

[0016] Optionally, an identification structure is provided on the outer surface of the protective cover, and the identification structure is used to indicate the installation direction when the protective cover and the sampling assembly are docked and the force direction when the protective cover and the sampling assembly are separated.

[0017] Optionally, the snap-fit ​​structure includes a first bead arranged on the end surface of the top cover away from the base and a first matching hole arranged on the sampling base, the first bead is located on a side of the top cover that is penetrated by the first guide groove, the sampling base includes a matching cover connected to the first guide rail, the matching cover covers a portion of the first end surface, the first matching hole is arranged on the side of the matching cover facing the first end surface, the first matching hole and the first bead are correspondingly matched, and the top cover and the sampling base are snap-fitted when the first bead is located in the first matching hole.

[0018] Optionally, the mounting seat is a rectangular plate structure, and the four corners of the mounting seat are connected to the burner mounting position on the gas experiment plug-in by bolts. The mounting seat is provided with a pin groove, and the pin groove is used for positioning with the pin on the gas experiment plug-in.

[0019] Optionally, the plurality of combustion tubes are spaced apart and distributed in sequence along a first straight line, and an angle between the first straight line and a straight side of the rectangular mounting seat is 45°.

[0020] Optionally, an anti-reverse column is provided on the base, and the anti-reverse column interferes with a part of the structure on the gas experiment plug-in when the experimental device is incorrectly installed.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] The experimental device can be used in the space station combustion science experimental system to ignite the flame and take carbon soot samples, solving the experimental device problem of conducting microgravity carbon soot experiments in the space station.

[0023] The multi-jet burner has multiple fuel jet nozzles, which can form jet flames and study the interaction between flames. The multiple fuel jet nozzles are at a certain angle to the burner envelope to adapt to the spatial position of the optical imaging equipment. The burner base has an anti-reverse column to prevent mechanical interference with other structures of the combustion science experimental system to prevent the burner from being installed upside down.

[0024] A protective cover is installed on the sampling cover through a guide rail-guide groove structure, and positioning and fixing are achieved by a snap-fit ​​structure of a bead and a matching hole to prevent the risk of injury from the tip of the sampling probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of the experimental device for sampling carbon soot from combustion in the space station in this application;

[0027] Figure 2 A top view of the experimental device for this application;

[0028] Figure 3 This is a schematic diagram of the explosion structure of the experimental device of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the mounting seat and base for this application;

[0030] Figure 5 This is a schematic diagram of the structure of the support and combustion tube of this application;

[0031] Figure 6 This is a schematic diagram of the structure of the outer tube of this application;

[0032] Figure 7 This is a schematic diagram of the structure of the top cover and rectifier plate of this application;

[0033] Figure 8 A schematic diagram of the sampling assembly for this application;

[0034] Fig. 9 This is a schematic diagram of the structure of the second alignment slot on the sampling base of this application;

[0035] Fig.10 This is a schematic diagram of the structure of the sampling base, the second base and the mounting plate of this application;

[0036] Fig.11 This is a schematic diagram of the structure of the first matching hole of the present application;

[0037] Fig.12 This is a schematic diagram of the structure of one side of the gland of this application;

[0038] Fig.13 This is a schematic diagram of the structure of the other side of the gland in this application;

[0039] Fig.14 This is a schematic diagram of the outer structure of the protective cover of this application;

[0040] Fig.15 This is a schematic diagram of the inner structure of the protective cover of this application.

[0041] Description of reference numerals:

[0042] 1. Multi-jet burner; 11. Base; 111. Air flow hole; 112. Center hole; 113. Anti-reverse column; 114. Pin groove; 115. Captive screw hole; 121. Support; 122. Second sealing ring; 123. Fuel pipe; 124. Pressing cover; 131. Outer pipe; 132. Sealing groove; 133. First sealing ring; 141. Top cover; 142. Opening; 143. Rectifier plate; 145. First bumper; 146. First guide groove; 1461. First guide end; 147. First alignment groove; 2. Sampling assembly; 21. Sampling base; 211. First mounting position; 212. Sampling cover pin; 213. First bolt through hole; 214. First guide rail; 215. Second guide groove; 2151. Second guide end; 216. First matching hole; 217. Second matching hole; 218. Second alignment groove; 22. Pressing cover; 221. Perforation; 223. Positioning hole; 23. Probe; 31. Protective cover; 32. L-shaped rod; 33. Pressing plate; 34. Arrow mark; 35. Second guide rail; 351. Enlargement block; 36. Second touch bead. DETAILED DESCRIPTION

[0043] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0044] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0045] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0046] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0047] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0048] An embodiment of the present application provides an experimental device for sampling carbon soot from combustion in a space station.

[0049] The invention discloses an experimental device for sampling combustion soot in a space station, which is used for being installed on a gas experiment plug-in in space.

[0050] like Figure 1 and Figure 2 As shown, the experimental setup includes:

[0051] The mounting seat is used to connect with the burner mounting position on the gas experiment plug-in.

[0052] The multi-jet burner 1 is mounted on the mounting base, and includes a fuel pipe 123 and a wake gas channel. The fuel pipe 123 is used to transport fuel, and the wake gas channel is used to transport wake gas. The end of the multi-jet burner 1 away from the mounting base serves as a combustion end, and the fuel and the wake gas are ignited after merging at the combustion end. The number of the fuel pipes 123 can be one or more, which is selected according to actual needs.

[0053] The sampling assembly 2 is detachably mounted on the combustion end, and includes a plurality of probes 23, the sampling ends of the probes 23 contacting the flame of the fuel combustion to sample the combustion soot of the fuel. In the embodiment of the present application, the probes 23 are specially arranged according to the design.

[0054] The protective cover 31 is detachably connected to the sampling assembly 2. The protective cover 31 is used to surround the probe 23. The protective cover 31 is separated from the sampling assembly 2 when the fuel is burning. The protective cover 31 is connected to the sampling assembly 2 after the fuel is burned and the sampling assembly 2 completes sampling, so as to protect the probe 23 that has completed sampling and prevent the risk of injury from the tip of the sampling probe 23. When conducting ignition and soot collection experiments, the protective cover 31 needs to be removed. In the embodiment of the present application, the outer surface of the protective cover 31 is engraved with the words "Protective cover 31" and "Be careful not to touch the probe".

[0055] like Figure 3 , Figure 4 and Figure 5 As shown, the multi-jet burner 1 includes a base 11, a support 121, an outer tube 131, a top cover 141 and a plurality of the fuel tubes 123. The base 11 is provided with a central through hole 112 and accompanying gas through holes 111 distributed around the central through hole 112. The central through hole 112 is used for allowing the plurality of the fuel tubes 123 to pass through. The fuel tubes 123 are fixed to the base 11 through the support 121. The outer tube 131 is connected to the base 11 around one end, and the outer tube 131 is connected to the base 11 around one end. 1 surrounds the outer circumference of the support 121 and the fuel pipe 123, the channel between the outer pipe 131 and the fuel pipe 123 is connected to the wake gas through hole 111, the top cover 141 is connected to the other end of the outer pipe 131, the sampling assembly 2 is installed on the top cover 141, the top cover 141 is provided with an opening 142, one end of the fuel pipe 123 away from the base 11 passes through the opening 142, and the wake gas through hole 111, the outer pipe 131 and the opening 142 form the wake gas channel.

[0056] In the implementation of this application, the support 121 is provided with a circular hole for the combustion tube to pass through, and the end surface of the support 121 facing away from the base 11 is provided with a clamping cover 124, and the fuel pipe 123 passes through the clamping cover 124. The outer periphery of the fuel pipe 123 is sleeved with a second sealing ring 122, and the second sealing ring 122 is located between the clamping cover 124 and the support 121. The clamping cover 124 is fixed to the support 121 by bolts, and the clamping cover 124 clamps the second sealing ring 122 on the support 121, and the second sealing ring 122 seals the gap between the fuel pipe 123 and the clamping cover 124 and the gap between the fuel pipe 123 and the support 121. Figure 6 As shown, a first sealing ring 133 is provided between the outer tube 131 and the top cover 141, and a sealing groove 132 for accommodating the first sealing ring 133 is provided on the outer tube 131 to achieve sealing between the outer tube 131 and the top cover 141. The outer wall of the outer tube 131 may have the words "multi-jet burner".

[0057] The mounting seat is a rectangular plate-like structure, and the four corners of the mounting seat are connected to the burner mounting position on the gas experiment plug-in by bolts, and the mounting seat is provided with a pin groove 114, and the pin groove 114 is used to cooperate with the pin on the gas experiment plug-in for positioning. In the embodiment of the present application, the four corners of the mounting seat are connected to the burner mounting position on the gas experiment plug-in by captive screws, and captive screw holes 115 are provided at the four corners of the mounting seat.

[0058] The plurality of combustion tubes are sequentially spaced and distributed along the first straight line, and the angle between the first straight line and a straight side of the rectangular mounting seat is 45°. The flame at the outlet of the fuel tube 123 is matched with the viewing angle of the optical observation device, so that the flame at the outlet of the fuel tube 123 adapts to the spatial position of the optical imaging device.

[0059] The base 11 is provided with an anti-reverse column 113 , which interferes with a part of the structure on the gas experiment plug-in when the experimental device is incorrectly installed.

[0060] like Figure 7 As shown, a rectifying plate 143 is disposed in the opening 142 of the top cover 141 , a passage for accompanying gas to pass through is disposed on the rectifying plate 143 , and a hole for the fuel pipe 123 to pass through is disposed on the rectifying plate 143 .

[0061] like Figure 7-Figure 10 As shown, the top cover 141 is provided with a first guide groove 146, one end of the first guide groove 146 passes through the outer peripheral side surface of one side of the top cover 141, the sampling assembly 2 includes a sampling base 21, a mounting plate and a pressure cover 22, the sampling base 21 includes a first guide rail 214 for slidingly matching with the first guide groove 146, the mounting plate is fixed on the sampling base 21, and a plurality of first mounting positions 211 for mounting the probe 23 are provided on the mounting plate, as shown in FIG. Fig.12 and Fig.13 As shown, the gland 22 is provided with a through hole 221 through which the probe 23 passes, and the through hole 221 gradually decreases from the side close to the mounting plate to the side away from the mounting plate. The gland 22 is fixed to the mounting plate by bolts, and the sampling base 21 is connected to the top cover 141 by a detachable clamping structure. In the embodiment of the present application, the outer surface of the sampling base 21 is engraved with the word "sampling", and the outer peripheral side of the top cover 141 may be engraved with the word "sampling entrance".

[0062] The end face of the top cover 141 away from the base 11 is the first end face, the first end face is perpendicular to the length direction of the outer tube 131, and the length of the first guide groove 146 is parallel to the first end face. The outer peripheral side of the top cover 141 is provided with a first alignment groove 147, and the sampling base 21 is provided with a second alignment groove 218. After the top cover 141 and the sampling base 21 are correctly combined, the first alignment groove 147 and the second alignment groove 218 are aligned, and the opening end of the first guide groove 146 is provided with a first guide end 1461 with a conical expansion, and the first guide groove 146 is a T-shaped slide groove. The sampling cover pin 212 is installed on the plate, and the pressure cover 22 is provided with a positioning hole 223 for cooperating with the sampling cover pin 212, which is used for positioning the pressure cover 22 during installation. The through hole 221 of the pressure cover 22 is provided with an O-ring or glue for fixing the probe 23, and the mounting plate and the pressure cover 22 are provided with a first bolt hole for bolt connection.

[0063] like Figure 7 and Fig.11 As shown, the clamping structure of the top cover 141 and the sampling base 21 includes a first bumping bead 145 arranged on the end face of the top cover 141 away from the base 11 and a first matching hole 216 arranged on the sampling base 21, the first bumping bead 145 is located on the side of the top cover 141 that is penetrated by the first guide groove 146, the sampling base 21 includes a matching cover connected to the first guide rail 214, the matching cover covers part of the first end face, the first matching hole 216 is arranged on the side of the matching cover facing the first end face, the first matching hole 216 and the first bumping bead 145 are arranged correspondingly, and the top cover 141 and the sampling base 21 are clamped when the first bumping bead 145 is located in the first matching hole 216. In the embodiment of the present application, two first bumping beads 145 are provided, and the connecting line of the two first bumping beads 145 is perpendicular to the length direction of the first guide groove 146. A conical guide head is provided at one end of the first guide rail 214 away from the matching cover.

[0064] like Fig.10 , Fig.14 and Fig.15As shown, the sampling assembly 2 also includes a second base connected to the sampling base 21, and the second base is provided with a second guide groove 215 perpendicular to the first end face. The protective cover 31 includes a cover body and a second guide rail 35 connected to each other, and the second guide rail 35 is used to cooperate and slide with the second guide groove 215. After the first guide rail 214 and the second guide groove 215 cooperate, the second base and the cover body are connected by a detachable clamping structure. The cover body is provided with an opening at one end facing the sampling base 21. When the protective cover 31 and the second base cooperate, the probe 23 passes through the opening and enters the cover body. A plurality of L-shaped rods 32 are provided in the cover body, and the L-shaped rods 32 are located between the plurality of probes 23. The L-shaped rods 32 and the opening are arranged correspondingly, one end of the L-shaped rod 32 is parallel to the first end face, and the other end of the L-shaped rod 32 is perpendicular to the first end face, and the L-shaped rod 32 is fixed to the cover body by a clamping sheet 33.

[0065] When the protective cover 31 is installed on the sampling assembly 2 , the probe 23 enters the cavity inside the protective cover 31 to achieve the protection function of the probe 23 . The L-shaped rod 32 is used to reduce the width of the exposed gap of the protective cover 31 to further prevent fingers from entering the protective cover 31 .

[0066] In the embodiment of the present application, the second guide groove 215 is a T-shaped guide groove, and an end of the second guide groove 215 away from the sampling base 21 is provided with a second guide end 2151 in an expanded configuration.

[0067] The clamping structure between the second base and the cover body includes a second bumping bead 36 arranged on the cover body and a second matching hole 217 arranged on the second base. After the protective cover 31 and the second base are correctly combined, the second bumping bead 36 falls into the second matching hole 217.

[0068] like Fig.14 As shown, the outer surface of the protective cover 31 is provided with an identification structure, and the identification structure is used to indicate the installation direction when the protective cover 31 and the sampling component 2 are docked and the force direction when the protective cover 31 and the sampling component 2 are separated. In the embodiment of the present application, the identification structure includes a tapered guide end of the second guide rail 35 close to the first end face, an enlarged block 351 arranged at the other end of the second guide rail 35, and an arrow mark 34 arranged on the periphery of the protective cover.

[0069] In one embodiment, the number of fuel pipes 123 is 3, the spacing is 5.5 mm, the number of follow-flow air holes 111 is 8, and the diameter is 1 mm. The number of probes 23 is 8, made of stainless steel, with a diameter of 0.7 mm, and the tip of the probe 23 is located directly above the fuel pipe 123. The number of L-shaped rods 32 is 2, ensuring that the width of the exposed gap of the protective cover 31 does not exceed 5 mm.

[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An experimental device for sampling carbon soot from space station combustion, characterized in that: For installation on the gas experiment plug-in in space, the experimental device includes: A mounting seat, used to connect with the burner mounting position on the gas experiment plug-in; A multi-jet burner (1) is mounted on the mounting seat, the multi-jet burner (1) comprising a fuel pipe (123) and a wake gas channel, the fuel pipe (123) is used to transport fuel, the wake gas channel is used to transport wake gas, an end of the multi-jet burner (1) away from the mounting seat serves as a combustion end, and the fuel and the wake gas are ignited after merging at the combustion end; A sampling assembly (2) is detachably mounted on the combustion end, the sampling assembly (2) comprising a plurality of probes (23), the sampling ends of the probes (23) contacting the flame of the fuel combustion to sample the combustion soot of the fuel; A protective cover (31) is detachably connected to the sampling assembly (2). The protective cover (31) is used to surround the probe (23). The protective cover (31) is separated from the sampling assembly (2) when the fuel is burning. The protective cover (31) is connected to the sampling assembly (2) after the fuel is burned and the sampling assembly (2) completes sampling.

2. The experimental device for sampling carbon soot from space station combustion according to claim 1, characterized in that: The multi-jet burner (1) comprises a base (11), a support (121), an outer tube (131), a top cover (141) and a plurality of fuel tubes (123); the base (11) is provided with a central through hole (112) and accompanying gas through holes (111) distributed around the periphery of the central through hole (112); the central through hole (112) is used for allowing the plurality of fuel tubes (123) to pass through; the fuel tubes (123) are fixed to the base (11) via the support (121); the outer tube (131) is connected to the base (11) around one end; and the outer tube (131) Surrounding the outer circumference of the support (121) and the fuel pipe (123), the passage between the outer pipe (131) and the fuel pipe (123) is connected to the accompanying gas through hole (111), the top cover (141) is connected to the other end of the outer pipe (131), the sampling assembly (2) is installed on the top cover (141), the top cover (141) is provided with an opening (142), one end of the fuel pipe (123) away from the base (11) passes through the opening (142), and the accompanying gas through hole (111), the outer pipe (131) and the opening (142) form the accompanying gas channel.

3. The experimental device for sampling carbon soot from space station combustion according to claim 2, characterized in that: A rectifying plate (143) is arranged in the opening (142) of the top cover (141), a passage for accompanying gas to pass through is arranged on the rectifying plate (143), and a hole for the fuel pipe (123) to pass through is arranged on the rectifying plate (143).

4. The experimental device for sampling carbon soot from space station combustion according to claim 2, characterized in that: The top cover (141) is provided with a first guide groove (146), one end of the first guide groove (146) passes through the outer peripheral side surface of one side of the top cover (141), the sampling assembly (2) comprises a sampling base (21), a mounting plate and a pressure cover (22), the sampling base (21) comprises a first guide rail (214) for slidingly cooperating with the first guide groove (146), the mounting plate is fixed on the sampling base (21), a plurality of first mounting positions for mounting the probe (23) are arranged on the mounting plate, the pressure cover (22) is provided with a through hole (221) through which the probe (23) passes, the pressure cover (22) is fixed to the mounting plate by bolts, and the sampling base (21) is connected to the top cover (141) by a detachable clamping structure; The end face of the top cover (141) away from the base (11) is a first end face, the first end face is perpendicular to the length direction of the outer tube (131), and the length of the first guide groove (146) is parallel to the first end face.

5. The experimental device for sampling carbon soot from space station combustion according to claim 4 is characterized in that: The sampling assembly (2) further comprises a second base connected to the sampling base (21), the second base being provided with a second guide groove (215) perpendicular to the first end face, the protective cover (31) comprising a cover body and a second guide rail (35) connected to each other, the second guide rail (35) being used for slidingly cooperating with the second guide groove (215), and after the first guide rail (214) and the second guide groove (215) are engaged, the second base and the cover body are connected via a detachable clamping structure, an opening is provided at one end of the cover body facing the sampling base (21), when the protective cover (31) and the second base are engaged, the probe (23) passes through the opening and enters the cover body, a plurality of L-shaped rods (32) are provided in the cover body, the L-shaped rods (32) are located between the plurality of probes (23), the L-shaped rods (32) and the opening are arranged correspondingly, one end of the L-shaped rod (32) is parallel to the first end face, and the other end of the L-shaped rod (32) is perpendicular to the second end face.

6. The experimental device for sampling carbon soot from space station combustion according to claim 5, characterized in that: The outer surface of the protective cover (31) is provided with an identification structure, and the identification structure is used to indicate the installation direction when the protective cover (31) and the sampling component (2) are docked and the force application direction when the protective cover (31) and the sampling component (2) are separated.

7. The experimental device for sampling carbon soot from space station combustion according to claim 4, characterized in that: The clamping structure comprises a first bead (145) arranged on the end surface of the top cover (141) away from the base (11) and a first matching hole (216) arranged on the sampling base (21); the first bead (145) is located on a side of the top cover (141) through which the first guide groove (146) passes; the sampling base (21) comprises a matching cover connected to the first guide rail (214); the matching cover covers a portion of the first end surface; the first matching hole (216) is arranged on the side of the matching cover facing the first end surface; the first matching hole (216) and the first bead (145) are arranged correspondingly and matchingly; when the first bead (145) is located in the first matching hole (216), the top cover (141) and the sampling base (21) are clamped.

8. The experimental device for sampling carbon soot from space station combustion according to claim 2, characterized in that: The mounting seat is a rectangular plate-shaped structure. The four corners of the mounting seat are connected to the burner mounting position on the gas experiment plug-in by bolts. The mounting seat is provided with a pin groove (114), and the pin groove (114) is used to cooperate with the pin on the gas experiment plug-in for positioning.

9. The experimental device for sampling carbon soot from space station combustion according to claim 8, characterized in that: The plurality of combustion tubes are sequentially spaced and distributed along a first straight line, and an angle between the first straight line and a straight side of the rectangular mounting seat is 45°.

10. The experimental device for sampling carbon soot from space station combustion according to claim 2, characterized in that: An anti-reverse column (113) is provided on the base (11), and the anti-reverse column (113) interferes with a part of the structure on the gas experiment plug-in when the experimental device is incorrectly installed.

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