Two-component nozzle assembly liquid flow test device and method

Abstract

The invention provides a liquid flow test device and method for a double-component nozzle assembly, and solves the problem of flow characteristic measurement under the condition of simultaneous radial liquid feeding of inner and outer nozzles in the double-component nozzle assembly, the liquid flow test device comprises a test upper shell, a test lower shell, a cushion block and a blanking cap, the upper testing shell comprises a first liquid inlet pipe nozzle, a pressing block and an annular body; the lower testing shell comprises a middle sleeve, a liquid collecting ring plate, a second liquid inlet pipe nozzle and a base; the cushion block is of a concave structure and is provided with a blind hole and a radial communicating hole; the upper end of the blanking cap makes contact with the lower end of the cushion block to achieve the sealing effect, and the lower end blocks an inner cavity of the inner nozzle and is higher than the upper end face of the inner nozzle. The upper end of the double-component nozzle assembly is located in the annular body, and the lower end penetrates through the base. The pressing block is arranged at the upper end of the middle sleeve and fixedly connected with the base. The device is compact in structure, firm in fixation and convenient to assemble and disassemble, and can meet the test of nozzle assemblies with various radial apertures.

Description

Technical Field

[0001] The invention relates to the field of liquid rocket engine nozzle liquid flow testing, and in particular to a two-component nozzle assembly liquid flow testing device and method. Background Art

[0002] The injection type of the bipropellant nozzle assembly is centrifugal. Due to its small structural size and the large mass flow rate, it is widely used in high-thrust liquid rocket engines. Its working principle is that the liquid flows through the radial holes on the nozzle shell into the swirl chamber, and forms a swirl under the action of the swirl chamber wall. At the same time, it flows to the nozzle outlet at a certain speed, and is atomized by centrifugal force into a conical liquid film, which can achieve a good atomization effect. The bipropellant nozzle uses a bipropellant self-igniting propellant, including an oxidizer and a fuel. The two are self-igniting when they come into contact. The bipropellant flows out of the nozzle through their respective flow channels according to a certain flow ratio, and the flow channels must be well isolated and sealed to prevent contact explosion. The quality of the atomization and mixing of the two propellants directly affects the performance level of the engine.

[0003] Therefore, during the production and testing of the two-component nozzle assembly, it is necessary to simultaneously measure its flow resistance, cone angle of the mixed spray field of the two components, mixing effect and other flow characteristics. According to its working principle, the liquid can only enter from the radial hole, and other flow channels entering the inner cavity must be isolated. The current liquid flow test equipment cannot meet the test requirements.

[0004] Through searching the prior art patent documents, it was found that the Chinese invention patent document with publication number CN112557044A discloses a two-component nozzle liquid flow performance testing device, in which a water inlet is arranged at the upper end of the upper nozzle, and the water inlet hole on the outer wall of the lower nozzle is located in the annular notch on the outer peripheral surface of the lower end of the upper nozzle.

[0005] The Chinese invention patent document CN113740047A has two water inlet nozzles on both sides, which are symmetrically arranged with coaxial center lines. Only one nozzle can be measured, and the function of separately feeding liquid into two independent nozzles cannot be realized. Summary of the invention

[0006] In view of the defects in the prior art, an object of the present invention is to provide a two-component nozzle assembly liquid flow test device and method.

[0007] A two-component nozzle assembly liquid flow test device according to the present invention comprises: a test upper shell 1, a test lower shell 2, a cushion block 3 and a plug cover 4;

[0008] The test upper shell 1 and the test lower shell 2 can cooperate to form a receiving space, and the receiving space can be used to install a two-component nozzle assembly;

[0009] The plugging cover 4 can be placed in the accommodating space inside the inner nozzle 8 of the two-component nozzle assembly, with the upper end contacting the cushion block 3 and the lower end being able to block the inner cavity of the inner nozzle 8 .

[0010] Preferably, the test upper housing 1 comprises a first liquid inlet nozzle 11, a pressing block 12 and an annular body 13;

[0011] The pressing block 12 is arranged inside the annular body 13;

[0012] The pressing block 12 is provided with an upper step hole 121, a flow hole 122 and a lower step hole 123;

[0013] The lower end of the first liquid inlet nozzle 11 is disposed in the upper step hole 121 and communicates with the lower step hole 123 through the flow hole 122 .

[0014] Preferably, the test lower housing 2 comprises an intermediate sleeve 21, a liquid collecting ring plate 22, a second liquid inlet nozzle 23 and a base 24;

[0015] The intermediate sleeve 21 is provided with a central cavity 211, a positioning step 212, a conducting cavity 213, an annular cavity 214, an annular step 215 and a conducting hole 216;

[0016] The central cavity 211 is disposed at the upper end of the conducting cavity 213; the conducting hole 216 communicates the annular cavity 214 and the conducting cavity 213;

[0017] The liquid collecting ring plate 22 is divided into two half rings, which are arranged in the annular step 215 of the middle sleeve 21, and are radially provided with a liquid inlet 221 arranged on the liquid collecting ring plate 22 and communicating with the annular cavity 214 of the middle sleeve 21;

[0018] The second liquid inlet nozzle 23 is arranged on the outer wall of the liquid collecting ring plate 22 and is connected to the liquid inlet 221; the base 24 is arranged at the lower end of the intermediate sleeve 21, and its end face is provided with a transverse step 241 and a center hole 242 connected to the conducting cavity 213 of the intermediate sleeve 21.

[0019] Preferably, the cushion block 3 is a concave structure, provided with a blind hole 31 and a radial connecting hole 32;

[0020] The upper end of the blind hole 31 is arranged in the lower step 123 of the pressure block 12 of the test upper shell 1, communicates with the flow hole 122 of the pressure block 12, and communicates with the inner cavity of the annular body 13 of the test upper shell 1 through the radial communicating hole 32.

[0021] Preferably, the blocking cover 4 is a rectangular structure, which can be disposed in the inlet step 83 of the inner nozzle 8 , with its upper end in contact with the lower end of the cushion block 3 , and its lower end blocking the inner cavity of the inner nozzle 8 .

[0022] Preferably, when the outer nozzle 7 and the inner nozzle 8 are installed, the lower end of the inner nozzle 8 is arranged inside the outer nozzle 7; the upper ends of the outer nozzle 7 and the inner nozzle 8 are located inside the annular body 13 of the test upper shell 1, and the lower ends pass through the central hole 242 of the base 24 of the upper shell 2;

[0023] Wherein, the outer nozzle 7 and the inner nozzle 8 are both sleeve through-hole structures;

[0024] The outer nozzle 7 is provided with a first radial liquid inlet hole 77 between the upper step 71 and the middle step 72 on the outer wall, and is communicated with the inner cavity of the outer nozzle 7; the first radial liquid inlet hole 77 is a radial hole, and N of the first radial liquid inlet holes 77 are evenly distributed in the circumferential direction, and N ≥ 3;

[0025] The upper end surface of the inner nozzle 8 is higher than the outer end surface of the outer nozzle 7. A second radial liquid inlet hole 86 is provided on the outer wall thereof and is connected to the inner cavity. The second radial liquid inlet hole 86 is a radial hole, and N of the second radial liquid inlet holes 86 are evenly distributed in the circumferential direction, where N≥3.

[0026] The upper end surface of the inlet step 83 of the inner nozzle 8 is lower than the height of the plugging cover 4 .

[0027] Preferably, a first liquid collecting chamber J is formed between the cushion block 3, the annular body 13 of the test upper shell 1, the first sealing gasket 5, the outer nozzle 7 and the inner nozzle 8;

[0028] The annular cavity 214 of the intermediate sleeve is the second liquid collecting cavity K;

[0029] A third liquid collecting chamber L is formed between the conducting chamber 213 of the intermediate sleeve, the first sealing gasket 5, the second sealing gasket 6 and the outer nozzle 7;

[0030] The inner cavity of the inner nozzle 8 forms a first swirl cavity X;

[0031] A second swirl chamber Y is formed between the outer nozzle 7 and the inner nozzle 8.

[0032] Preferably, the first liquid inlet nozzle 11 and the second liquid inlet nozzle 23 are respectively arranged on the upper surface and the side surface of the test upper shell 1, and both independently inlet liquid to simulate the flow state of the two propellant components of the oxidizer and the fuel through flow control.

[0033] Preferably, the first liquid inlet nozzle 11 and the second liquid inlet nozzle 23 both simulate the flow state of the liquid before entering the radial hole and the state of atomization and mixing of the two liquids after entering the radial hole.

[0034] According to a liquid flow test method for a two-component nozzle assembly provided by the present invention, a liquid flow test is performed using the liquid flow test device applicable to the two-component nozzle assembly.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention solves the problem of measuring flow characteristics when the inner and outer nozzles in a two-component nozzle assembly radially feed liquid at the same time. It has a compact structure, is firmly fixed, and is easy to assemble and disassemble, and can meet the testing of nozzle assemblies with various radial apertures.

[0037] 2. The present invention clamps the nozzle assembly in the device, and realizes radial liquid inlet into the two flow channels of the dual-component nozzle assembly through structural design, effectively blocking the axial flow channel, ensuring that the liquid can only enter the swirl chamber through the radial holes, and can simulate the engine working scene.

[0038] 3. The present invention checks and screens the flow resistance and coupled spray field of the nozzle assembly, matches the nozzle assemblies with different flow characteristics, and installs them in different areas of the rocket engine injector, thereby improving the combustion efficiency of the rocket engine and alleviating the problem of excessive concentration of combustion energy.

[0039] 4. The water inlet nozzles of the present invention are respectively arranged on the upper and side surfaces of the shell, which realizes effective isolation and sealing of the two nozzle inlet channels in structure, and can control the flow of the two inlet channels respectively, simulating the flow state of the two propellant components, the oxidizer and the fuel. In addition, the water inlet nozzles of the present invention are respectively arranged on the upper and side surfaces of the shell, which is consistent with the flow direction and number of interfaces of the propellant entering the nozzle under the engine state, and can simulate the flow state of the liquid before entering the radial hole and the state of atomization and mixing of the two liquids after entering the radial hole as much as possible, so as to realize the evaluation and screening of the mixing effect of the spray field. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0041] Figure 1 Schematic diagram of a two-component nozzle assembly liquid flow test device according to an embodiment of the present invention;

[0042] Figure 2 It is a schematic diagram of the structure of the outer nozzle of the present invention;

[0043] Figure 3 It is a schematic diagram of the structure of the inner nozzle of the present invention;

[0044] Figure 4 It is a schematic diagram of the structure of the pressing block and the annular body of the present invention;

[0045] Figure 5 It is a structural schematic diagram of the intermediate casing of the present invention;

[0046] Figure 6 It is a schematic diagram of the structure of the liquid collecting ring plate of the present invention;

[0047] Figure 7 Schematic diagram of the top view of the liquid collecting ring plate of the present invention;

[0048] Figure 8 It is a structural schematic diagram of the base of the present invention;

[0049] Fig. 9 It is a structural schematic diagram of the cushion block of the present invention;

[0050] Fig.10 It is a schematic diagram of the structure of the liquid collecting chamber and the cyclone chamber of the present invention.

[0051] The figure shows:

[0052]

[0053] DETAILED DESCRIPTION

[0054] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0055] Example 1

[0056] like Figure 1-Figure 9 As shown, an embodiment of the present invention provides a two-component nozzle assembly liquid flow test device, including a test upper shell 1, a test lower shell 2, a cushion block 3, a plugging cover 4, a first sealing gasket 5 and a second sealing gasket 6;

[0057] The two-component nozzle assembly comprises an outer nozzle 7 and an inner nozzle 8. The outer nozzle 7 is a sleeve through-hole structure, and its outer wall is provided with an upper step 71, a middle step 72 and a lower step 73, and its inner cavity is provided with a limit step 74, an outlet step 75 and a liquid outlet 76. A first radial liquid inlet hole 77 is provided between the upper step 71 and the middle step 72 of the outer wall, and is communicated with the inner cavity of the outer nozzle 7; the inner nozzle 8 is a sleeve through-hole structure, and its outer wall is provided with an upper boss 81 and a lower boss 82, and the inner cavity of the inner nozzle 8 is provided with an inlet step 83, a slope step 84 and a liquid outlet 85;

[0058] The upper boss 81 of the outer wall of the inner nozzle 8 is arranged on the limiting step 74 of the inner cavity of the outer nozzle 7, and has an interference fit with the outer nozzle 7; the upper end surface of the inner nozzle 8 is higher than the upper end surface of the outer nozzle 7, and a second radial liquid inlet hole 86 is arranged on the outer wall, and is connected with the inner cavity of the inner nozzle 8; the lower end of the inner nozzle 8 is arranged in the outer nozzle 7;

[0059] The test upper housing 1 includes a first liquid inlet nozzle 11, a pressure block 12 and an annular body 13; the pressure block 12 is provided with an upper step hole 121, a flow hole 122 and a lower step hole 123; the lower end of the first liquid inlet nozzle 11 is arranged in the upper step hole 121, and is connected with the lower step hole 123 through the flow hole 122;

[0060] The test lower shell 2 includes an intermediate sleeve 21, a liquid collecting ring plate 22, a second liquid inlet nozzle 23 and a base 24; the intermediate sleeve 21 is provided with a central cavity 211, a positioning step 212, a conducting cavity 213, an annular cavity 214, an annular step 215 and a conducting hole 216; the central cavity 211 is arranged at the upper end of the conducting cavity 213; the conducting hole 216 connects the annular cavity 214 and the conducting cavity 213; the liquid collecting ring plate 22 is divided into two semi-rings, which are arranged in the annular step 215 of the intermediate sleeve, and radially provided with a liquid inlet 221 connected with the annular cavity 214 of the intermediate sleeve; the second liquid inlet nozzle 23 is arranged on the outer wall of the liquid collecting ring plate 22 and is connected with the liquid inlet 221; the base 24 is arranged at the lower end of the intermediate sleeve 21, and its end face is provided with a transverse step 241 and a central hole 242 connected with the inner cavity of the intermediate sleeve 21.

[0061] The gasket 3 is a concave structure, provided with a blind hole 31 and a radial connecting hole 32; the upper end of the blind hole 31 is arranged in the lower step 123 of the pressing block, connected with the flow hole 122 of the pressing block, and connected with the inner cavity of the annular body 13 through the radial connecting hole 32.

[0062] The plugging cover 4 is a rectangular structure, and is disposed in the inlet step 83 of the inner nozzle 8, with its upper end in contact with the lower end of the cushion block 3 to achieve a sealing effect, and its lower end blocks the inner cavity of the inner nozzle 8;

[0063] The first sealing gasket 5 and the second sealing gasket 6 are both annular structures. The first sealing gasket 5 is located on the positioning step 212 of the intermediate sleeve; the second sealing gasket 6 is located in the transverse step 241 of the base; the upper ends of the outer nozzle 7 and the inner nozzle 8 are located in the annular body 13 of the test upper shell 1, and the lower ends pass through the central hole 242 of the base; the pressing block 12 is arranged at the upper end of the intermediate sleeve 21 and is fixedly connected to the base 24; the annular body 13 of the test upper shell 1 passes through the central cavity 211 of the intermediate sleeve and is located at the upper end of the first sealing gasket 5; the intermediate sleeve 21 is located at the second sealing gasket 6 upper end; the upper step 71 of the outer nozzle 7 is located at the lower end of the first sealing gasket 5, and the middle step 72 is located at the upper end of the second sealing gasket 6; a first tungsten inert gas arc welding weld A is provided between the first liquid inlet nozzle 11 and the pressing block 12; a second tungsten inert gas arc welding weld B is provided between the second liquid inlet nozzle 23 and the liquid collecting ring plate 22; a third tungsten inert gas arc welding weld C is provided between the liquid collecting ring plate 22 and the intermediate sleeve 21; a fourth tungsten inert gas arc welding weld D is provided between the two half rings of the liquid collecting ring plate 22; a laser welding weld E is provided between the outer nozzle 7 and the inner nozzle 8.

[0064] Example 2

[0065] This embodiment is a variation of embodiment 1. Fig.10 As shown, a first liquid collecting chamber J is formed between the gasket 3, the annular body 13 of the test upper shell 1, the first sealing gasket 5 and the outer nozzle 7, and the inner nozzle 8; the annular chamber 214 of the intermediate sleeve is a second liquid collecting chamber K; a third liquid collecting chamber L is formed between the conducting chamber 213 of the intermediate sleeve, the first sealing gasket 5, the second sealing gasket 6 and the outer nozzle 7; the inner chamber of the inner nozzle forms a first swirl chamber X; a second swirl chamber Y is formed between the outer nozzle 7, the upper boss 81 of the outer wall of the inner nozzle and the inner nozzle 8.

[0066] On the one hand, the liquid enters the first liquid collecting chamber J through the first liquid inlet nozzle 11, then enters the first swirl chamber X through the second radial liquid inlet hole 86 of the inner nozzle, and flows out from the liquid outlet hole 85 of the inner nozzle to form a conical spray.

[0067] On the other hand, the liquid enters the second liquid collecting chamber K and the third liquid collecting chamber L in sequence through the second liquid inlet nozzle 23, and then enters the second swirl chamber Y through the first radial liquid inlet hole 77 of the outer nozzle, and flows out from the liquid outlet 76 of the outer nozzle to form a conical spray, thereby achieving the test purpose of simultaneously conducting liquid flow tests on the dual-component nozzle assembly.

[0068] The present invention will be described in more detail below through more preferred examples.

[0069] The first radial liquid inlet holes 77 are radial holes, three of which are evenly distributed in the circumferential direction; the second radial liquid inlet holes 86 are radial holes, three of which are evenly distributed in the circumferential direction.

[0070] The lower end surface of the inner nozzle 8 is retracted inwardly from the lower end surface of the outer nozzle 7 by a distance of 3 mm.

[0071] The inner diameter of the first sealing gasket 5 is smaller than the inner diameter of the annular body 13 of the test upper shell 1, and the difference between the two is 2 mm; the diameter of the outer nozzle 7 is smaller than the inner diameter of the guide cavity 213 of the intermediate sleeve, and the difference between the two is 2 mm; the inner diameter of the second sealing gasket 6 is smaller than the inner diameter of the center hole 242 of the base.

[0072] The blocking cover 4 is 1 mm higher than the upper end surface of the inlet step 83 of the inner nozzle, and is made of polytetrafluoroethylene propylene.

[0073] The height of the first sealing gasket 5 and the second sealing gasket 6 is 2 mm, and the material is polytetrafluoroethylene propylene.

[0074] The diameter of the liquid inlet 221 of the liquid collecting ring plate is 5 mm.

[0075] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0076] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A two-component nozzle assembly liquid flow test device, characterized in that: include: Testing the upper shell (1), testing the lower shell (2), the cushion block (3) and the plugging cover (4); The test upper shell (1) and the test lower shell (2) can cooperate to form a receiving space, and the receiving space can be used to install a two-component nozzle assembly; The plugging cover (4) can be placed in the accommodating space inside the inner nozzle (8) in the two-component nozzle assembly, with the upper end contacting the cushion block (3) and the lower end being able to block the inner cavity of the inner nozzle (8).

2. The two-component nozzle assembly liquid flow test device according to claim 1, characterized in that: The test upper shell (1) comprises a first liquid inlet nozzle (11), a pressing block (12) and an annular body (13); The pressing block (12) is arranged inside the annular body (13); The pressing block (12) is provided with an upper step hole (121), a flow hole (122) and a lower step hole (123); The lower end of the first liquid inlet nozzle (11) is arranged in the upper step hole (121) and is connected to the lower step hole (123) through the flow hole (122).

3. The two-component nozzle assembly liquid flow test device according to claim 2, characterized in that: The test lower housing (2) comprises an intermediate sleeve (21), a liquid collecting ring plate (22), a second liquid inlet nozzle (23) and a base (24); The intermediate sleeve (21) is provided with a central cavity (211), a positioning step (212), a conducting cavity (213), an annular cavity (214), an annular step (215) and a conducting hole (216); The central cavity (211) is arranged at the upper end of the conducting cavity (213); the conducting hole (216) communicates the annular cavity (214) and the conducting cavity (213); The liquid collecting ring plate (22) is divided into two half rings and is arranged in the annular step (215) of the middle sleeve (21). A liquid inlet (221) arranged on the liquid collecting ring plate (22) and communicating with the annular cavity (214) of the middle sleeve (21) is radially arranged on the liquid collecting ring plate (22); The second liquid inlet nozzle (23) is arranged on the outer wall of the liquid collecting ring plate (22) and is connected to the liquid inlet (221); the base (24) is arranged at the lower end of the intermediate sleeve (21), and its end surface is provided with a transverse step (241) and a center hole (242) that are connected to the conducting cavity (213) of the intermediate sleeve (21).

4. The two-component nozzle assembly liquid flow test device according to claim 1, characterized in that: The cushion block (3) is a concave structure and is provided with a blind hole (31) and a radial communication hole (32); The upper end of the blind hole (31) is arranged in the lower step (123) of the pressing block (12) of the test upper shell (1), is connected to the flow hole (122) of the pressing block (12), and is connected to the inner cavity of the annular body (13) of the test upper shell (1) through the radial connecting hole (32).

5. The two-component nozzle assembly liquid flow test device according to claim 1, characterized in that: The blocking cover (4) is a rectangular structure and can be arranged in the inlet step (83) of the inner nozzle (8). Its upper end contacts the lower end of the cushion block (3), and its lower end blocks the inner cavity of the inner nozzle (8).

6. The two-component nozzle assembly liquid flow test device according to claim 3, characterized in that: When the outer nozzle (7) and the inner nozzle (8) are installed, the lower end of the inner nozzle (8) is arranged inside the outer nozzle (7); the upper ends of the outer nozzle (7) and the inner nozzle (8) are located inside the annular body (13) of the test upper shell (1), and the lower ends pass through the central hole (242) of the base (24) of the upper shell (2); Wherein, the outer nozzle (7) and the inner nozzle (8) are both sleeve through-hole structures; The outer nozzle (7) is provided with a first radial liquid inlet hole (77) between the upper step (71) and the middle step (72) on the outer wall, and is communicated with the inner cavity of the outer nozzle (7); the first radial liquid inlet hole (77) is a radial hole, and N of the first radial liquid inlet holes (77) are evenly distributed in the circumferential direction, and N is greater than or equal to 3; The upper end surface of the inner nozzle (8) is higher than the upper end surface of the outer nozzle (7) and is provided with a second radial liquid inlet hole (86) on its outer wall, and is in communication with the inner cavity; the second radial liquid inlet hole (86) is a radial hole, and is evenly distributed in the circumferential direction in N numbers, where N is greater than or equal to 3; The upper end surface of the inlet step (83) of the inner nozzle (8) is lower than the height of the blocking cover (4).

7. The two-component nozzle assembly liquid flow test device according to claim 6, characterized in that: A first liquid collecting chamber J is formed between the cushion block (3), the annular body (13) of the test upper shell (1), the first sealing gasket (5), the outer nozzle (7), and the inner nozzle (8); The annular cavity (214) of the intermediate sleeve is a second liquid collecting cavity K; A third liquid collecting chamber L is formed between the conducting chamber (213) of the intermediate sleeve, the first sealing gasket (5), the second sealing gasket (6) and the outer nozzle (7); The inner cavity of the inner nozzle (8) forms a first swirl cavity X; A second swirl chamber Y is formed between the outer nozzle (7) and the inner nozzle (8).

8. The two-component nozzle assembly liquid flow test device according to claim 2, characterized in that: The first liquid inlet nozzle (11) and the second liquid inlet nozzle (23) are respectively arranged on the upper surface and the side surface of the test upper shell (1), and the two independently inlet liquids to simulate the flow state of the two propellant components, oxidizer and fuel, through flow control.

9. The two-component nozzle assembly liquid flow test device according to claim 8, characterized in that: The first liquid inlet nozzle (11) and the second liquid inlet nozzle (23) both simulate the flow state of the liquid before it enters the radial hole and the state of atomization and mixing of the two liquids after it enters the radial hole.

10. A liquid flow test method for a two-component nozzle assembly, characterized in that: A liquid flow test is carried out using the liquid flow test device suitable for a two-component nozzle assembly as described in any one of claims 1 to 9.

Images