A gel propellant atomization test device

Abstract

The present invention discloses a gel propellant atomization test device, which includes a gel propellant supply part, a flow test part, an atomization part and a propellant circumferential collection part. The gel propellant is injected into a gel storage tank, and high-pressure gas is introduced into the gel storage tank to squeeze the gel propellant into the supply pipeline. A gel pneumatic valve is provided in the supply pipeline, and a piston is provided in the pneumatic valve. When high-pressure gas is introduced into the pneumatic valve, the piston blocks the channel and the pneumatic valve is closed; the gas supply is stopped and the pressure is released, and the pneumatic valve is opened. After the gas valve is opened, the gel propellant is divided into two streams, which flow through the flow test part and enter the atomization part respectively. The atomization part includes a track, a slider, a rotating table and an angle table. By adjusting the atomization part, the injection needle reaches the designed position, and the gel propellant is ejected from the injection needle to complete the atomization; the atomized gel propellant falls into the circumferentially evenly distributed collection tray in the propellant circumferential collection part, and the circumferential distribution of the atomization is obtained by measuring the mass. The present invention has high safety, comprehensive data collection and is easy to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of gel propellant atomization, and particularly relates to a gel propellant atomization test device. Background Art

[0002] Gel propellant is a novel propellant with excellent performance, derived from traditional liquid propellants (such as aviation kerosene, hydrogen peroxide, and unsymmetrical dimethylhydrazine) as the main component, solidified by the addition of a small amount of a gelling agent. Gel propellant exhibits the shear-thinning properties of non-Newtonian fluids: it retains solid properties under static, normal conditions, but exhibits liquid-like fluidity when subjected to external shear forces such as heating, pressurization, and stirring. Jet impingement atomization is widely used in bipropellant liquid rocket engines. Driven by high-pressure gas, two or more liquid jets ejected from a nozzle collide at a specific angle and distance, forming a liquid film that then breaks into a large number of liquid filaments and droplets. However, factors such as the size and distance of the atomizer orifice, as well as the spray angle, are crucial influencing atomization quality. Parameters that quantitatively characterize impact atomization performance include liquid film size, film breakup length, film thickness, atomization angle, and droplet size.

[0003] Existing atomization test benches typically use high-speed cameras to capture the atomization quality of gel propellants, which cannot directly reflect the circumferential distribution and flow rate of the atomized propellant. Furthermore, existing test benches generally use solenoid valves to control the opening and closing of the gel tube, which can be dangerous. Therefore, it is necessary to develop a safer, more comprehensive, lower-cost, and easier-to-operate gel atomization test bench. Summary of the Invention

[0004] In order to solve the problems of low safety, incomplete data collection and inconvenient operation of the above-mentioned atomization test bench, the present invention provides a gel propellant atomization test device.

[0005] The gel propellant atomization test device of the present invention comprises: a test table, a gel propellant supply unit, a flow rate test unit, an atomization unit and a propellant circumferential collection unit;

[0006] The gel propellant supply unit includes a gel storage tank and a tank rack. The bottom of the tank rack is fixed to the test table, and the gel storage tank is fixed to the top. The top of the gel storage tank is provided with a tank plug and a tank pressure sensor. The top of the gel storage tank is connected to the gas pipe through an air path one-way valve, and the bottom of the gel storage tank is connected to one end of the gel tube through the gel one-way valve. The other end of the gel tube is connected to a Y-type adapter through a gel pneumatic valve.

[0007] The flow test section includes two flow meter racks and two Coriolis flow meters fixed to the two flow meter racks. The bottoms of the two flow meter racks are fixed to the test table and have extensions extending from the test table. Y-type adapters are connected to the lower inlets of the two Coriolis flow meters through connecting hoses.

[0008] The atomizing section includes a track mounted on the extending portion, two sliders slidably connected to the track, two rotary table mounting blocks respectively mounted on the two sliders, two rotary tables respectively mounted on the two rotary table mounting blocks, and two injection pipes respectively mounted on the two rotary tables. The lower end of each injection pipe is connected to an injection needle, and the upper end is connected to a three-way adapter. One of the other two channel ports of each three-way adapter is connected to an injection pressure sensor, and the other channel port is connected to the upper end outlet of a Coriolis flowmeter through a connecting hose. The rotating axes of the two rotary tables are horizontal and parallel. When the rotary tables rotate, the injection needles are driven to rotate and the angle between the two injection needles is changed.

[0009] The propellant circumferential collecting portion comprises a collecting disc groove and a plurality of collecting discs placed in the collecting disc groove. The propellant circumferential collecting portion is located below the injection needle and is used to collect the propellant falling from the injection needle.

[0010] Furthermore, an L-shaped tube is connected between the gel storage tank and the gas circuit one-way valve, one end of the gas tube away from the gas circuit one-way valve is connected to one end of the gas circuit solenoid valve, and the other end of the gas circuit solenoid valve is connected to the air inlet pipe.

[0011] Furthermore, the gel pneumatic valve is shaped like a three-way connector. The upper port is connected to the gel tube. One port of the horizontal straight tube is connected to a Y-type adapter via an air valve adapter. The other port is used to connect to the high-pressure air pipe. A piston is installed inside the horizontal straight tube, with the large end of the piston away from the air valve adapter and the small end closer to the air valve adapter. The small end of the piston has a circular hole in the center, and a rubber piston plug is installed in an interference fit. When air is introduced into the gel pneumatic valve, the piston moves to the right, blocking the gel passage. When the air supply is stopped, the pressure in the storage tank pushes the piston to the left, opening the gel passage.

[0012] Furthermore, the flowmeter stand includes a mounting plate and an L-shaped rod formed by a horizontal rod and a vertical rod. The horizontal rod of the L-shaped rod is fixed to the mounting plate, and the Coriolis flowmeter is mounted on the vertical rod. The mounting plate is fixed to the test table, and the extended portion of the flowmeter stand is the portion of the mounting plate that is located outside the test table. The Coriolis flowmeter is placed vertically, and the gel propellant enters through the lower inlet and flows out through the upper inlet. During measurement, the flowmeter is kept full of liquid, ensuring accurate measurement.

[0013] Furthermore, the rotating platform mounting block is a right-angled plate formed by connecting a horizontal plate and a vertical plate. One rotating platform is connected to the injection pipe via a corner platform mounting block, a corner platform, and a first pipe clamp. The injection pipe is mounted on the first pipe clamp, the first pipe clamp is mounted on the corner platform, the corner platform is mounted on the corner platform mounting block, and the corner platform mounting block is mounted on the rotating platform. The other rotating platform is connected to the injection pipe via a spacer block and a second pipe clamp. The injection pipe is mounted on the second pipe clamp, the second pipe clamp is mounted on the spacer block, and the spacer block is mounted on the rotating platform. During the experiment, the rotating platform can be used to adjust the angle between the two injection needles, thereby changing the atomization angle of the gel propellant. A corner platform is installed on one side to adjust the pitch angle of the injection needle to ensure that the two gel liquid columns collide with each other.

[0014] The track further comprises a base and a cylindrical guide rail fixed to the base. The base spans and is fixed to the two mounting plates. The slider has a sliding groove that cooperates with the guide rail and is limited in sliding on the guide rail. By moving the slider, the distance between the two injection needle holes can be changed, thereby changing the atomization distance of the gel during the experiment.

[0015] Furthermore, the collecting tray slot is a circular tray, and there are 12 collecting trays of the same shape. After the test, the mass of the propellant in the 12 collecting trays can be measured to obtain the circumferential distribution of the gel propellant atomization.

[0016] Beneficial effects: The present invention uses impact atomization to conduct a gel atomization test, and uses a Coriolis flowmeter to realize flow testing of solid propellant, thereby collecting the flow of gel during the gel atomization process, and can more conveniently and accurately calculate the gel propellant outlet velocity and supply rate; a gel pneumatic valve is used to realize the on-off of the gel propellant supply, so that the gel propellant is kept away from the electronic control product, making the gel test bench safer and more reliable; a propellant circumferential collection part is used to realize the collection of the circumferential distribution of the gel after atomization, further studying the atomization effect of the gel propellant, and providing a new reference basis for the actual atomization state of the gel propellant inside the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the gel propellant atomization test device of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the gel propellant supply unit of the present invention;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the flow testing part of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the atomization part of the present invention;

[0021] Figure 5is a top view of the gel pneumatic valve of the present invention;

[0022] Figure 6 yes Figure 5 AA cross-section of the gel pneumatic valve;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the propellant circumferential collecting portion of the present invention;

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotating table mounting block in the present invention;

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the corner table mounting block in the present invention;

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the cushion block in the present invention;

[0027] In the figure: 10, test table; 20, gel propellant supply unit; 201, support frame; 202, tank base; 203, first clamp; 204, gel tank; 205, tank plug; 206, tank pressure sensor; 207, L-shaped pipe; 208, gas circuit check valve; 209, gas pipe; 210, gas circuit solenoid valve; 211, air inlet pipe; 212, gel check valve; 213, gel pipe; 214, gel pneumatic valve; 215, Y-type adapter; 216, gas valve adapter; 217, piston; 218, piston plug; 30, flow test unit; 301, mounting plate; 302, crossbar; 303, vertical rod; 304, Coriolis flowmeter; 305, second clamp; 40, atomization unit; 401, base; 4 02. Guide rail; 403. First slider; 404. First rotary table mounting block; 405. First rotary table; 406. Angle table mounting block; 407. Angle table; 408. First transverse U-shaped seat; 409. First clamping block; 410. First injection pipe; 411. First injection needle; 412. First adapter; 413. First injection pressure sensor; 414. Second slider; 415. Second rotary table mounting block; 416. Second rotary table; 417. Pad; 418. Second transverse U-shaped seat; 419. Second clamping block; 420. Second injection pipe; 421. Second injection needle; 422. Second adapter; 423. Second injection pressure sensor; 50. Propellant circumferential collection portion; 501. Collection tray slot; 502. Collection tray. DETAILED DESCRIPTION

[0028] The present invention will now be further described in detail by way of embodiments with reference to the accompanying drawings, but the present invention is not limited to the embodiments.

[0029] like Figure 1As shown, the present invention is a gel propellant atomization test device, which includes: a test table 10, a gel propellant supply unit 20, a flow rate testing unit 30, an atomization unit 40 and a propellant circumferential collection unit 50.

[0030] The gel propellant supply unit 20 is as follows: Figure 2 As shown, it includes a gel tank 204 and a tank rack. The tank rack includes a support frame 201 and a tank base 202 welded to the support frame 201 for holding the gel tank 204. The bottom of the support frame 201 is fixed to the test table 10 by screws. A first clamp 203 is connected to the support frame 201 to clamp and fix the gel tank 204. Three threaded holes are provided on the top of the gel storage tank 204, and the three threaded holes are respectively threadedly connected with a tank plug 205, from which gel propellant, a tank pressure sensor 206, and an L-shaped tube 207 can be added. Gel propellant can be added from the tank plug 205. The end of the L-shaped tube 207 away from the gel storage tank 204 is connected to one end of the gas circuit one-way valve 208, the other end of the gas circuit one-way valve 208 is connected to one end of the gas pipe 209, the other end of the gas pipe 209 is connected to one end of the gas circuit solenoid valve 210, and the other end of the gas circuit solenoid valve 210 is connected to the air inlet pipe 211. The air inlet pipe 211 is used to connect to a high-pressure gas cylinder to obtain high-pressure gas as the power for atomization of the gel propellant. A threaded hole is provided at the bottom of the gel storage tank 204, and is threadedly connected to a gel one-way valve 212 to ensure safety. One end of the gel one-way valve 212 away from the gel storage tank 204 is connected to one end of a gel tube 213, the other end of the gel tube 213 is connected to one end of a gel pneumatic valve 214, the other end of the gel pneumatic valve 214 is connected to one end of an air valve adapter 216, and the other end of the air valve adapter 216 is connected to a Y-type adapter 215. The Y-type adapter 215 divides the gel propellant into two.

[0031] Specifically, if Figure 5 、 Figure 6 As shown, the gel pneumatic valve 214 is in the shape of a three-way connector, with the upper end connected to the gel tube 213, one end of the horizontal straight tube connected to the air valve adapter 216, and the other end for connecting to the high-pressure air pipe. A piston 217 is installed inside the horizontal straight tube, with the large end of the piston 217 away from the air valve adapter 216 and the small end of the piston 217 close to the air valve adapter 216. The small end of the piston 217 has a circular hole in the center, and a rubber piston plug 218 is installed in an interference fit. When high-pressure gas is introduced into the gel pneumatic valve 214 through the high-pressure air pipe, the piston 217 is pushed toward the air valve adapter 216, and the piston plug 218 blocks the passage inside the air valve adapter 216. After the pressure is released, the pressure of the gel will press the piston 217 back to the left, and the passage inside the air valve adapter 216 will be opened.

[0032] The flow rate test section 30 is as follows Figure 3As shown, the apparatus comprises two flowmeter stands and two Coriolis flowmeters 304 fixed to the two flowmeter stands, respectively. The flowmeter stand comprises a mounting plate 301 and an L-shaped rod formed by connecting a horizontal rod 302 and a vertical rod 303. The horizontal rod 302 of the L-shaped rod is fastened to the mounting plate 301 by screws (for example, the horizontal rod 302 is fastened by screws passing through through holes preset in the horizontal rod 302 and screwing into screw holes preset in the mounting plate 301. Hereinafter, when screws are used for fastening, the fastening method is similar to conventional methods). The Coriolis flowmeters 304 are mounted on the vertical rods 303. Specifically, a second clamp 305 is installed on each vertical rod 303 to clamp the Coriolis flowmeter 304. There are two second clamps 305, one above the other. The mounting plate 301 is fastened to the test table 10 by screws, and one end of the mounting plate 301 extends outside the test table 10 as an extension. The Y-type adapter 215 is connected to the lower inlet of two Coriolis flowmeters 304 through connecting hoses. The Coriolis flowmeters 304 are commercially available, for example, a DN20 model Coriolis flowmeter manufactured by Shanghai Jishen Instrument Co., Ltd.

[0033] The atomizing unit 40 is as follows Figure 4As shown, it includes a rail mounted on the above-mentioned protruding portion, two sliders slidably connected to the rail, namely a first slider 403 and a second slider 414, a first rotary table mounting block 404 mounted on the first slider 403, a first rotary table 405 mounted on the first rotary table mounting block 404, an angle table mounting block 406 mounted on the first rotary table 405, an angle table 407 mounted on the angle table mounting block 406, a first pipe clamp mounted on the angle table 407, a first injection pipe 410 clamped by the first pipe clamp, and a second rotary table mounting block 415 mounted on the second slider 414, 15, a second rotating platform 416, a spacer 417 mounted on the second rotating platform 416, a second pipe clamp mounted on the spacer 417, and a second injection pipe 420 clamped by the second pipe clamp. The lower end of the first injection pipe 410 is connected to the first injection needle 411, and the upper end is connected to the first adapter 412 (i.e., a three-way adapter). The lower end of the second injection pipe 420 is connected to the second injection needle 421, and the upper end is connected to the second adapter 422 (i.e., a three-way adapter). One of the other two channel ports of each three-way adapter is connected to an injection pressure sensor, and the other channel port is connected to the upper outlet of the Coriolis flowmeter 304 via a connecting hose. The injection pressure sensor connected to the first adapter 412 is the first injection pressure sensor 413, and the injection pressure sensor connected to the second adapter 422 is the second injection pressure sensor 423. Each injection pressure sensor is used to measure the pressure of the propellant before it is ejected from the nozzle. The first slider 403 and the second slider 414 have the same structure, the first turntable mounting block 404 and the second turntable mounting block 415 have the same structure, the first turntable 405 and the second turntable 416 have the same structure, the first tube clamp and the second tube clamp have the same structure, the first injection pipe 410 and the second injection pipe 420 have the same structure for ejecting high-speed gel propellant jets, the first injection needle 411 and the second injection needle 421 have the same structure, and the first adapter 412 and the second adapter 422 have the same structure.

[0034] Specifically, the track includes a base 401 and a cylindrical guide rail 402 fixed to the base 401. The base 401 spans the protruding parts of the two mounting plates 301 and is fastened with screws. The slider is a rectangular parallelepiped. On one side, a circular arc groove (such as Figure 4 As shown), the guide rail 402 is inserted into the slide groove to limit the slider to slide on the guide rail 402. The above-mentioned rotating table mounting blocks are all right-angle plates formed by connecting a horizontal plate and a vertical plate (as shown). Figure 8 As shown in the figure, the two inner surfaces of the right angle plate are respectively attached to the two surfaces of the slider and fastened with screws. The rotating table is fastened to the two outer surfaces of the right angle plate by screws. There are five stepped holes (as shown in the figure) on the corner table mounting block 406. Figure 9406 and is fixed to the first rotating platform 405 by screws. The angular platform 407 and the angular platform mounting block 406 are fixed by welding. The first pipe clamp includes a first transverse U-shaped seat 408 and two first clamping blocks 409. Both ends of the first transverse U-shaped seat 408 are provided with semicircular grooves extending from top to bottom, and the grooves are open at the end surface, and the two grooves are distributed one above and one below. The end surface of the first transverse U-shaped seat 408 is provided with a screw hole, and the two first clamping blocks 409 are also provided with the same semicircular grooves. The two first clamping blocks 409 are also provided with through holes corresponding to the screw holes on the first transverse U-shaped seat 408; the first injection pipe 410 is placed in the two upper and lower grooves of the first transverse U-shaped seat 408, and then the two first clamping blocks 409 are respectively matched with the two grooves of the first transverse U-shaped seat 408, and screws are used to pass through the through holes on the first clamping blocks 409 and screwed into the screw holes on the first transverse U-shaped seat 408 for tightening. In this way, the first injection pipe 410 can be clamped and kept vertical (such as Figure 4 The first pipe clamp is fastened by using screws to pass through the through holes preset on the first transverse U-shaped seat 408 and screw into the screw holes preset on the corner platform 407. The pad 417 is provided with four stepped holes (as shown in FIG. Figure 10 (as shown) and fastened to the second rotating platform 416 using screws. Since the first and second pipe clamps have the same structure, the second pipe clamp includes a second transverse U-shaped seat 418 and two second clamping blocks 419. The second pipe clamp is fastened by screws passing through holes provided in the second transverse U-shaped seat 418 and into screw holes provided in the spacer blocks 417. Each injection tube is threadedly connected to the injection needle. The first injection tube 410 is threadedly connected to the first adapter 412, and the second injection tube 420 is threadedly connected to the second adapter 422. The first adapter 412 and the second adapter 422 are also threadedly connected to their respective injection pressure sensors.

[0035] The rotating axes of the two rotating tables are horizontal and parallel. Rotation of the rotating tables drives the injection needles to rotate, changing the angle between the two needles. In other words, the rotation of the two needles occurs approximately in the same vertical plane, allowing each rotating table to adjust the spray distance and angle of the atomized gel propellant. The aforementioned angle table 407 can adjust the pitch angle of the first injection needle 411 on the first rotating table 405. The angle table 407 and each rotating table are commercially available. For example, the rotating table is the MTS-DX60 model manufactured by Anying Instruments, and the angle table is the SJ120-30 model manufactured by Lianying.

[0036] The propellant circumferential collecting portion 50 is as follows Figure 7As shown, the circumferential propellant collection unit 50 comprises a collection tray trough 501 and several collection trays 502 placed within it. The propellant collection unit 50 is placed on the ground below the injection needle to collect propellant that falls from the injection needle. The collection tray trough 501 is a circular disc, and there are 12 collection trays 502 of the same shape, each occupying one-twelfth of the entire collection tray trough 501. Specifically, the center of the circumferential propellant collection unit 50 is positioned at the ground level, where the midpoint of a vertical line connecting the two injection needles is projected. This allows for uniform circumferential sampling and measurement of the circumferential mass distribution of the atomized gel propellant.

[0037] The technologies not specifically mentioned above are all referenced to the existing technologies.

[0038] Based on the above-mentioned ideal embodiment of the present invention, and through the above description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification.

Claims

1. A gel propellant atomization test device, characterized in that: include: A test table (10), a gel propellant supply unit (20), a flow rate testing unit (30), an atomization unit (40), and a propellant circumferential collection unit (50); The gel propellant supply unit (20) includes a gel storage tank (204) and a storage tank rack. The bottom of the storage tank rack is fixed on the test table (10), and the upper end is fixed with the gel storage tank (204). The top of the gel storage tank (204) is provided with a storage tank plug (205) and a storage tank pressure sensor (206). The top of the gel storage tank (204) is connected to a gas pipe (209) via an air path one-way valve (208). The bottom of the gel storage tank (204) is connected to one end of a gel tube (213) via a gel one-way valve (212). The other end of the gel tube (213) is connected to a Y-type adapter (215) via a gel pneumatic valve (214). The flow test section (30) includes two flow meter racks and two Coriolis flow meters (304) respectively fixed on the two flow meter racks. The bottoms of the two flow meter racks are fixed on the test table (10) and have protruding portions extending from the test table (10). The Y-type adapter (215) is connected to the lower end inlets of the two Coriolis flow meters (304) through connecting hoses. The atomizing portion (40) includes a track mounted on the protruding portion, two sliders slidably connected to the track, two rotary table mounting blocks respectively mounted on the two sliders, two rotary tables respectively mounted on the two rotary table mounting blocks, and two injection pipes respectively mounted on the two rotary tables, wherein the lower end of each injection pipe is connected to an injection needle, and the upper end is connected to a three-way adapter, one of the other two channel ports of each three-way adapter is connected to an injection pressure sensor, and the other channel port is connected to the upper end outlet of the Coriolis flowmeter (304) through a connecting hose; the rotating axes of the two rotary tables are horizontal and parallel, and after the rotary tables rotate, the injection needles are driven to rotate and the angle between the two injection needles is changed; The propellant circumferential collecting portion (50) comprises a collecting disc groove (501) and a plurality of collecting discs (502) placed in the collecting disc groove. The propellant circumferential collecting portion (50) is located below the injection needle and is used to collect the propellant falling from the injection needle.

2. The gel propellant atomization test device according to claim 1, characterized in that: An L-shaped tube (207) is connected between the gel storage tank (204) and the gas circuit one-way valve (208), one end of the gas tube (209) away from the gas circuit one-way valve (208) is connected to one end of the gas circuit solenoid valve (210), and the other end of the gas circuit solenoid valve (210) is connected to the air inlet pipe (211).

3. The gel propellant atomization test device according to claim 2, characterized in that: The gel pneumatic valve (214) is in the shape of a three-way joint, the upper end of which is connected to the gel tube (213), one end of the horizontal straight pipe portion is connected to the Y-type adapter (215) through the air valve adapter (216), and the other end is used to connect to the high-pressure air pipe. A piston (217) is installed inside the horizontal straight pipe portion, the large end of the piston (217) is away from the air valve adapter (216), and the small end of the piston (217) is close to the air valve adapter (216). A circular hole is provided in the center of the small end of the piston (217), and a piston plug (218) made of rubber material is installed in an interference fit.

4. The gel propellant atomization test device according to claim 3, characterized in that: The flow meter rack comprises a mounting plate (301) and an L-shaped rod formed by a horizontal rod (302) and a vertical rod (303), wherein the horizontal rod (302) of the L-shaped rod is fixed to the mounting plate (301), and the Coriolis flow meter (304) is mounted on the vertical rod (303); the mounting plate (301) is fixed to the test table (10), and the extended portion of the flow meter rack is the portion of the mounting plate (301) located outside the test table (10).

5. The gel propellant atomization test device according to claim 4, characterized in that: The rotating platform mounting block is a right-angled plate formed by connecting a horizontal plate and a vertical plate; one rotating platform is connected to the injection pipe through the corner platform mounting block (406), the corner platform (407) and the first pipe clamp, the injection pipe is mounted on the first pipe clamp, the first pipe clamp is mounted on the corner platform (407), the corner platform (407) is mounted on the corner platform mounting block (406), and the corner platform mounting block (406) is mounted on the rotating platform; the other rotating platform is connected to the injection pipe through the pad block (417) and the second pipe clamp, the injection pipe is mounted on the second pipe clamp, the second pipe clamp is mounted on the pad block (417), and the pad block (417) is mounted on the rotating platform.

6. The gel propellant atomization test device according to claim 5, characterized in that: The track comprises a base (401) and a cylindrical guide rail (402) fixed on the base (401); the base (401) spans over and is fixed on the two mounting plates (301); and the slider has a sliding groove for use with the guide rail (402) and is limited to slide on the guide rail (402).

7. The gel propellant atomization test device according to claim 6, characterized in that: The collecting tray slot (501) is a circular tray, and there are 12 collecting trays (502) with the same shape.

Images