Gas hydrogen oxygen enriched prechamber and afterburning cycle liquid rocket engine

Abstract

The application relates to the field of aerospace technology, in particular to a hydrogen-oxygen-rich precombustion chamber and a supplement combustion cycle liquid rocket engine. The hydrogen-oxygen-rich precombustion chamber comprises a precombustion chamber, a hydrogen injection member and an oxygen injection member; the precombustion chamber has a precombustion cavity; the oxygen injection member and the hydrogen injection member are surrounded by an oxygen cavity; the oxygen injection member has a plurality of first oxygen channels; the hydrogen injection member comprises a hydrogen fixed part with a hydrogen cavity and a plurality of hydrogen injection parts corresponding to the first oxygen channels one by one; the hydrogen injection part can guide hydrogen into the precombustion cavity; the hydrogen injection part and the first oxygen channel form an oxygen guide gap, and oxygen is guided into the precombustion cavity through the oxygen guide gap; the application can guide hydrogen into the precombustion cavity through a plurality of hydrogen injection parts at the same time, guide oxygen into the precombustion cavity through a plurality of oxygen guide gaps at the same time, increase the contact area of hydrogen and oxygen, and make the hydrogen and oxygen fully combust.

Description

Technical Field

[0001] This application relates to the field of aerospace technology, and in particular to a gaseous hydrogen-oxygen-enriched pre-combustion chamber and a staged combustion cycle liquid rocket engine. Background Technology

[0002] Hydrogen-oxygen propellant combinations are widely used in staged combustion cycle liquid rocket engines due to their high specific impulse. The pre-combustion chamber, as an important component of staged combustion cycle liquid rocket engines, is responsible for generating cryogenic oxygen-rich (or fuel-rich) gas. This requires that combustion in the pre-combustion chamber occur under conditions that significantly deviate from the stoichiometric mixture ratio.

[0003] Existing oxygen-enriched pre-combustion chambers often employ a single coaxial shear nozzle structure, where gaseous oxygen and gaseous hydrogen have only one reaction contact area. The mixing ratio between oxidant and fuel in the oxygen-enriched pre-combustion chamber is extremely high, leading to problems such as long flame length and incomplete combustion when a large amount of gaseous oxygen reacts with a small amount of gaseous hydrogen.

[0004] Therefore, there is an urgent need for a gaseous hydrogen-oxygen-enriched pre-combustion chamber and a staged combustion cycle liquid rocket engine to solve the problems existing in the current technology to some extent. Summary of the Invention

[0005] The purpose of this application is to provide a gaseous hydrogen-oxygen-enriched pre-combustion chamber and a staged combustion cycle liquid rocket engine, so as to solve, to some extent, the technical problem of incomplete combustion between oxidizer and fuel in existing structures.

[0006] This application provides a gaseous hydrogen-oxygen-enriched pre-combustion chamber, including a pre-combustion chamber, a gaseous hydrogen injection component, and a gaseous oxygen injection component disposed between the gaseous hydrogen injection component and the pre-combustion chamber.

[0007] The pre-combustion chamber has a pre-combustion cavity; a gas-oxygen cavity is provided between the gas-oxygen injection component and the gas-hydrogen injection component;

[0008] The gas-oxygen injection component has multiple first gas-oxygen channels that communicate with the pre-combustion chamber and are spaced apart along the circumferential direction of the pre-combustion chamber.

[0009] The gaseous hydrogen injection component includes a gaseous hydrogen fixing part with a gaseous hydrogen cavity and a plurality of gaseous hydrogen injection parts arranged at intervals along the circumferential direction of the gaseous hydrogen fixing part and corresponding one-to-one with the first gaseous oxygen channel.

[0010] One end of the gaseous hydrogen injection section is connected to the gaseous hydrogen chamber and the other end passes through the first gaseous oxygen channel and is connected to the pre-combustion chamber, so that the gaseous hydrogen in the gaseous hydrogen chamber is introduced into the pre-combustion chamber.

[0011] A gas-oxygen conduction gap is formed between the gas-hydrogen injection section passing through the first gas-oxygen channel and the first gas-oxygen channel, so that gas-oxygen is introduced into the pre-combustion chamber through the gas-oxygen conduction gap;

[0012] Multiple gaseous hydrogen injection nozzles simultaneously introduce gaseous hydrogen into the pre-combustion chamber, and multiple gaseous oxygen conduction gaps simultaneously introduce gaseous oxygen into the pre-combustion chamber, in order to increase the contact area between the gaseous hydrogen and the gaseous oxygen.

[0013] In the above technical solution, the first oxygen-gas channel further includes a straight section and an outwardly expanding section that are interconnected along the direction from the hydrogen-gas injection component to the pre-combustion chamber.

[0014] The outer expansion section has a gradually expanding structure along the direction from the gaseous hydrogen injection component to the pre-combustion chamber.

[0015] In the above technical solution, a second oxygen-gas passage is further provided on the side wall of the pre-combustion chamber;

[0016] One end of the second oxygen channel is connected to the oxygen chamber and the other end is connected to the pre-combustion chamber. The second oxygen channel can guide part of the oxygen injected by the oxygen injection component into the pre-combustion chamber.

[0017] In the above technical solution, the second gas-oxygen channel extends along the axial direction of the pre-combustion chamber and its starting end is located at the end of the pre-combustion chamber near the gas-oxygen injection component, and its ending end is located in the middle and rear part of the pre-combustion chamber.

[0018] In the above technical solution, the second oxygen channel is further provided in multiple ways;

[0019] Multiple second oxygen channels are arranged at equal intervals along the circumference of the pre-combustion chamber.

[0020] In the above technical solution, the gaseous oxygen injection component further includes an injection panel;

[0021] The injection panel has a groove structure with its open end facing the gaseous hydrogen injection component, so that the injection panel and the gaseous hydrogen injection component surround the gaseous oxygen chamber;

[0022] Multiple first oxygen channels are arranged at equal intervals along the circumference of the injection panel near the center of the injection panel.

[0023] The injection panel has a third oxygen channel along its circumference that communicates with the second oxygen channel.

[0024] In the above technical solution, the gaseous hydrogen injection component further includes a gaseous hydrogen chamber top plate that can serve as the gaseous hydrogen fixing part and a gaseous hydrogen nozzle that can serve as the gaseous hydrogen injection part.

[0025] The gaseous hydrogen nozzle includes a first injection section and a second injection section communicating with the first injection section;

[0026] The first injection section is close to the top plate of the gas hydrogen chamber and has a tapered structure along the direction from the gas hydrogen injection component to the gas oxygen injection component;

[0027] The second injection section is close to the gas-oxygen injection component and extends along the axial direction of the pre-combustion chamber.

[0028] In the above technical solution, the oxygen-rich pre-combustion chamber further includes a sealing element;

[0029] The sealing elements are respectively disposed between the pre-combustion chamber and the gaseous oxygen injection component, and between the gaseous oxygen injection component and the gaseous hydrogen injection component.

[0030] In the above technical solution, the oxygen-rich pre-combustion chamber further includes a connecting component;

[0031] The connecting member can fix the gaseous hydrogen injection member and the gaseous oxygen injection member to the pre-combustion chamber.

[0032] This application also provides a staged combustion cycle liquid rocket engine, including the aforementioned oxygen-enriched pre-combustion chamber containing hydrogen and oxygen.

[0033] Compared with the prior art, the beneficial effects of this application are as follows:

[0034] This application provides a gaseous hydrogen-oxygen-enriched pre-combustion chamber, including a pre-combustion chamber, a gaseous hydrogen injection component, and a gaseous oxygen injection component disposed between the gaseous hydrogen injection component and the pre-combustion chamber.

[0035] The pre-combustion chamber has a pre-combustion cavity; a gas-oxygen cavity is provided between the gas-oxygen injection component and the gas-hydrogen injection component;

[0036] The gas-oxygen injection component has multiple first gas-oxygen channels that communicate with the pre-combustion chamber and are spaced apart along the circumferential direction of the pre-combustion chamber.

[0037] The gaseous hydrogen injection component includes a gaseous hydrogen fixing part with a gaseous hydrogen cavity and a plurality of gaseous hydrogen injection parts arranged at intervals along the circumferential direction of the gaseous hydrogen fixing part and corresponding one-to-one with the first gaseous oxygen channel.

[0038] One end of the gaseous hydrogen injection section is connected to the gaseous hydrogen chamber and the other end passes through the first gaseous oxygen channel and is connected to the pre-combustion chamber, so that the gaseous hydrogen in the gaseous hydrogen chamber is introduced into the pre-combustion chamber.

[0039] A gas-oxygen conduction gap is formed between the gas-hydrogen injection section passing through the first gas-oxygen channel and the first gas-oxygen channel, so that gas-oxygen is introduced into the pre-combustion chamber through the gas-oxygen conduction gap;

[0040] Multiple gaseous hydrogen injection nozzles simultaneously introduce gaseous hydrogen into the pre-combustion chamber, and multiple gaseous oxygen conduction gaps simultaneously introduce gaseous oxygen into the pre-combustion chamber, in order to increase the contact area between the gaseous hydrogen and the gaseous oxygen.

[0041] Specifically, this application, by providing multiple gaseous hydrogen injection sections and multiple gaseous oxygen conduction gaps, enables the simultaneous introduction of gaseous hydrogen into the pre-combustion chamber through multiple gaseous hydrogen injection sections and the simultaneous introduction of gaseous oxygen into the pre-combustion chamber through multiple gaseous oxygen conduction gaps. This increases the contact area between gaseous hydrogen and gaseous oxygen, allowing for complete combustion of gaseous hydrogen and gaseous oxygen and preventing flames from appearing in the pre-combustion chamber.

[0042] This application also provides a staged combustion cycle liquid rocket engine, including the aforementioned oxygen-enriched pre-combustion chamber containing gaseous hydrogen and oxygen. Therefore, it possesses all the beneficial effects of a staged combustion cycle liquid rocket engine, which will not be elaborated upon here. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 A schematic diagram of the structure of the gaseous hydrogen-oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application from a first-view perspective;

[0045] Figure 2 A schematic diagram of the structure of the gaseous hydrogen-oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application from a second perspective;

[0046] Figure 3 A cross-sectional view of the oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application;

[0047] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0048] Figure 5 This is a schematic diagram of the gaseous oxygen injection component in the gaseous hydrogen-oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application from a first-view perspective.

[0049] Figure 6 This is a schematic diagram of the gaseous oxygen injection component in the gaseous hydrogen-oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application from a second perspective.

[0050] Figure 7 A schematic diagram of the gaseous hydrogen nozzle in the oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application from a third-view perspective.

[0051] Figure 8 A schematic diagram of the gaseous hydrogen nozzle in the oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application from a first-view perspective.

[0052] Figure 9 A schematic diagram of the gaseous hydrogen nozzle in the oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application, viewed from a second perspective.

[0053] Figure 10 This is a cross-sectional view of the gaseous hydrogen nozzle in the gaseous hydrogen-oxygen-enriched pre-combustion chamber provided in Embodiment 1 of this application.

[0054] Figure 11 A schematic diagram of the pre-combustion chamber in the oxygen-rich pre-combustion chamber provided in Embodiment 1 of this application from a first-view perspective.

[0055] Figure 12 A schematic diagram of the pre-combustion chamber in the oxygen-rich pre-combustion chamber provided in Embodiment 1 of this application, viewed from a second perspective.

[0056] Figure 13 This is a schematic diagram of the internal flow field distribution in the oxygen-rich pre-combustion chamber provided in Embodiment 1 of this application.

[0057] Figure label:

[0058] 1-Pre-combustion chamber; 2-Gaseous hydrogen injection component; 3-Gaseous oxygen injection component; 4-Pre-combustion chamber; 5-Gaseous oxygen chamber; 6-First gaseous oxygen channel; 7-Gaseous hydrogen chamber; 8-Gaseous oxygen conduction gap; 9-Straight section; 10-Outer expansion section; 11-Second gaseous oxygen channel; 12-Injection panel; 13-Third gaseous oxygen channel; 14-Top plate of gaseous hydrogen chamber; 15-Gaseous hydrogen nozzle; 16-First injection section; 17-Second injection section; 18-Sealing component; 19-Connecting component; 20-Gaseous hydrogen connection nozzle; 21-Gaseous oxygen connection nozzle; 22-Bolt; 23-Nut; 24-Mounting groove; 25-Igniter. Detailed Implementation

[0059] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0060] The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0061] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] Example 1

[0065] Combination Figures 1-13 Detailed description of the oxygen-rich pre-combustion chamber provided in this application

[0066] This embodiment provides a gaseous hydrogen-oxygen-enriched pre-combustion chamber, including a pre-combustion chamber 1, a gaseous hydrogen injection component 2, and a gaseous oxygen injection component 3 disposed between the gaseous hydrogen injection component 2 and the pre-combustion chamber 1.

[0067] Specifically, the pre-combustion chamber 1 has a pre-combustion cavity 4; the gaseous hydrogen injection component 2 can introduce gaseous hydrogen into the pre-combustion cavity 4, and the gaseous oxygen injection component 3 can introduce gaseous oxygen into the pre-combustion cavity 4.

[0068] Specifically, a gas oxygen injection component 3 and a gas hydrogen injection component 2 are provided with a gas oxygen cavity 5, which is used to store gas oxygen.

[0069] Specifically, the oxygen injection component 3 has multiple first oxygen channels 6, one end of which is connected to the oxygen chamber 5 and the other end is connected to the pre-combustion chamber 4. The multiple first oxygen channels 6 are arranged at intervals along the circumferential direction of the pre-combustion chamber 1.

[0070] Furthermore, the oxygen injection component 3 has 6 first oxygen channels 6, which are arranged at intervals in the circumferential direction of the pre-combustion chamber 1.

[0071] Specifically, the gaseous hydrogen injection component 2 includes a gaseous hydrogen fixing part and a gaseous hydrogen injection part. The gaseous hydrogen fixing part has a gaseous hydrogen cavity 7, which is used to store gaseous hydrogen. There are multiple gaseous hydrogen injection parts, and each of the multiple gaseous hydrogen injection parts corresponds one-to-one with the first gaseous oxygen channel 6. That is, when there are 6 first gaseous oxygen channels 6, there are also 6 gaseous hydrogen injection parts.

[0072] Specifically, one end of the gaseous hydrogen injection section is connected to the gaseous hydrogen chamber 7 and the other end passes through the first gas-oxygen channel 6 and is connected to the pre-combustion chamber 4. That is, the gaseous hydrogen in the gaseous hydrogen chamber 7 can be introduced into the pre-combustion chamber 4 through the gaseous hydrogen injection section.

[0073] Specifically, the diameter of the first oxygen channel 6 is larger than the diameter of the hydrogen injection section, so that an oxygen-gas conduction gap 8 is formed between the hydrogen injection section passing through the first oxygen channel 6 and the first oxygen channel 6. Through this oxygen-gas conduction gap 8, the oxygen in the oxygen chamber 5 can be introduced into the pre-combustion chamber 4.

[0074] In summary, by providing multiple gaseous hydrogen injection sections and multiple gaseous oxygen conduction gaps 8, this application can simultaneously introduce gaseous hydrogen into the pre-combustion chamber 4 through multiple gaseous hydrogen injection sections and simultaneously introduce gaseous oxygen into the pre-combustion chamber 4 through multiple gaseous oxygen conduction gaps 8. This increases the contact area between gaseous hydrogen and gaseous oxygen, allowing gaseous hydrogen and gaseous oxygen to burn completely and preventing flames from appearing in the pre-combustion chamber 1.

[0075] In this embodiment, the first oxygen-gas passage 6 includes a straight section 9 and an outwardly expanding section 10 that are interconnected along the direction from the hydrogen-gas injection component 2 to the pre-combustion chamber 1.

[0076] Specifically, the straight section 9 refers to the first oxygen channel 6 in this section being straight and parallel to the axis of the preheating chamber.

[0077] Specifically, the outer expansion section 10 has a gradually expanding structure along the direction from the gaseous hydrogen injection component 2 to the pre-combustion chamber 1.

[0078] Furthermore, the outer extension section 10 has a trumpet-shaped structure.

[0079] In summary, the oxygen-gas conduction gap 8 formed after the hydrogen injection section passes through the first oxygen-gas channel 6 is initially a straight channel, and then gradually expands.

[0080] In summary, when gaseous oxygen is introduced into the pre-combustion chamber 4 through the gaseous oxygen conduction gap 8, it can form a vortex at the end of the pre-combustion chamber 1 near the gaseous oxygen injection component 3, which can effectively isolate the combustion reaction zone from the gaseous oxygen and play a role in protecting the gaseous oxygen injection component 3.

[0081] In this embodiment, a second oxygen channel 11 is provided on the side wall of the pre-combustion chamber 1.

[0082] Specifically, one end of the second oxygen channel 11 is connected to the oxygen chamber 5 and the other end is connected to the pre-combustion chamber 4. The second oxygen channel 11 can introduce part of the oxygen from the oxygen chamber 5 into the pre-combustion chamber 4.

[0083] In summary, this application employs a combination of multiple hydrogen injection sections and multiple first oxygen channels 6, which increases the coaxial shear force and significantly increases the reaction area of ​​hydrogen and oxygen. At the same time, a second oxygen channel 11 is also provided in the pre-combustion chamber 4. The oxygen and gas flowing through the second oxygen channel 11 to the pre-combustion chamber 4 will generate a strong disturbance vortex on the jet flow formed by coaxial shear, further promoting the mixing of hydrogen and oxygen and improving combustion efficiency.

[0084] Specifically, the second oxygen-gas channel 11 extends along the axial direction of the pre-combustion chamber 1, with its starting end located at the end of the pre-combustion chamber 1 near the oxygen-gas injection component 3, and its ending end located in the middle and rear part of the pre-combustion chamber 1.

[0085] Specifically, there are 6 second oxygen channels 11, which are arranged at equal intervals along the circumference of the pre-combustion chamber 1.

[0086] Furthermore, the six second oxygen channels 11 are configured in a one-to-one correspondence with the six first oxygen channels 6.

[0087] In this embodiment, the oxygen injection component 3 includes an injection panel 12.

[0088] Specifically, the injection panel 12 has a groove structure, with the open end of the groove structure facing the gaseous hydrogen injection component 2, so that the injection panel 12 and the gaseous hydrogen injection component 2 surround the gaseous oxygen chamber 5.

[0089] Specifically, the six first oxygen channels 6 are arranged at equal intervals along the circumference of the injection panel 12 near the center of the injection panel 12.

[0090] Specifically, a third oxygen channel 13, which communicates with the second oxygen channel 11, is provided along the circumference of the injection panel 12. Part of the oxygen is introduced into the pre-combustion chamber 4 through the third oxygen channel 13 and the second oxygen channel 11 in sequence.

[0091] In actual use, gaseous oxygen is introduced into the pre-combustion chamber 4 through multiple gaseous oxygen conduction gaps 8, and gaseous hydrogen is introduced into the pre-combustion chamber 1 through multiple gaseous hydrogen injection sections, which increases the coaxial shear force and greatly increases the reaction area of ​​gaseous hydrogen and gaseous oxygen. At the same time, some gaseous oxygen is introduced into the middle and rear part of the pre-combustion chamber 4 through the third gaseous oxygen channel 13 and the second gaseous oxygen channel 11, so that this part of gaseous oxygen can generate a strong disturbance vortex on the jet flow formed by coaxial shear, further promoting the mixing of gaseous oxygen and improving combustion efficiency.

[0092] In this embodiment, the gaseous hydrogen injection component 2 includes a gaseous hydrogen chamber top plate 14 that can serve as a gaseous hydrogen fixing part and a gaseous hydrogen nozzle 15 that can serve as a gaseous hydrogen injection part.

[0093] Specifically, the gaseous hydrogen nozzle 15 includes a first injection section 16 and a second injection section 17 communicating with the first injection section 16.

[0094] Furthermore, the first injection section 16 is close to the top plate 14 of the gas hydrogen chamber and has a tapered structure along the direction from the gas hydrogen injection component 2 to the gas oxygen injection component 3.

[0095] Furthermore, the second injection section 17 is close to the oxygen injection component 3 and extends along the axial direction of the pre-combustion chamber 1.

[0096] In summary, the entire process of injecting gaseous hydrogen into the pre-combustion chamber 1 can be understood as a tapered structure. This tapered structure is conducive to the gaseous oxygen being more tightly bound to the gaseous hydrogen at the outlet of the gaseous hydrogen nozzle 15, thus avoiding the heat load caused by the intense mixing between gaseous hydrogen and gaseous oxygen, which would result in the high-temperature combustion zone being too close to the injection panel 12.

[0097] In this embodiment, the gaseous hydrogen-oxygen-enriched pre-combustion chamber 1 further includes a sealing element 18.

[0098] Specifically, the sealing element 18 is respectively disposed between the pre-combustion chamber 1 and the gas-oxygen injection component 3 and between the gas-oxygen injection component 3 and the gas-hydrogen injection component 2, thereby preventing the leakage of gas-oxygen and gas-hydrogen and ensuring the sealing performance of the gas-oxygen injection component and the gas-hydrogen injection component 2.

[0099] In this embodiment, the oxygen-rich pre-combustion chamber 1 further includes a connecting member 19; the connecting member 19 includes bolts 22 and nuts 23.

[0100] Specifically, an installation groove 24 is provided in the circumferential direction of the pre-combustion chamber 1 near the injection panel 12.

[0101] In the actual connection process: first, the bolt 22 passes through the edge of the gas hydrogen chamber top plate 14, the gas oxygen injection panel 12 and the pre-combustion chamber 1 in sequence, and then the nut 23 and bolt 22 are placed in the mounting groove 24.

[0102] In this embodiment, the oxygen-enriched pre-combustion chamber 1 further includes an igniter 25, which is disposed on the side wall of the pre-combustion chamber 1 and located in the middle of the pre-combustion chamber 1. The ignition end of the igniter 25 can extend to the pre-combustion chamber 4 and ignite in the pre-combustion chamber 4, so that the gaseous hydrogen and gaseous oxygen can burn.

[0103] In this embodiment, the oxygen-enriched pre-combustion chamber 1 further includes a hydrogen connection nozzle 20 and an oxygen connection nozzle 21. The hydrogen connection nozzle 20 is connected to the hydrogen chamber 7 and is used to guide hydrogen into the hydrogen chamber 7. The oxygen connection nozzle 21 is connected to the oxygen chamber 5 and is used to guide oxygen into the oxygen chamber 5.

[0104] Example 2

[0105] This embodiment also provides a staged combustion cycle liquid rocket engine, including the aforementioned gaseous-hydrogen-oxygen-enriched pre-combustion chamber. Therefore, it possesses all the beneficial effects of the gaseous-hydrogen-oxygen-enriched pre-combustion chamber, which will not be elaborated upon further here.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A gaseous hydrogen-oxygen enriched pre-combustion chamber, characterized in that, It includes a pre-combustion chamber, a gaseous hydrogen injection component, and a gaseous oxygen injection component disposed between the gaseous hydrogen injection component and the pre-combustion chamber; The pre-combustion chamber has a pre-combustion cavity; An oxygen injection chamber is provided between the oxygen injection component and the hydrogen injection component; The gas-oxygen injection component has multiple first gas-oxygen channels that communicate with the pre-combustion chamber and are spaced apart along the circumferential direction of the pre-combustion chamber. The gaseous hydrogen injection component includes a gaseous hydrogen fixing part with a gaseous hydrogen cavity and a plurality of gaseous hydrogen injection parts arranged at intervals along the circumferential direction of the gaseous hydrogen fixing part and corresponding one-to-one with the first gaseous oxygen channel. One end of the gaseous hydrogen injection section is connected to the gaseous hydrogen chamber and the other end passes through the first gaseous oxygen channel and is connected to the pre-combustion chamber, so that the gaseous hydrogen in the gaseous hydrogen chamber is introduced into the pre-combustion chamber. A gas-oxygen conduction gap is formed between the gas-hydrogen injection section passing through the first gas-oxygen channel and the first gas-oxygen channel, so that gas-oxygen is introduced into the pre-combustion chamber through the gas-oxygen conduction gap; Multiple gaseous hydrogen injection nozzles simultaneously introduce gaseous hydrogen into the pre-combustion chamber, and multiple gaseous oxygen conduction gaps simultaneously introduce gaseous oxygen into the pre-combustion chamber to increase the contact area between the gaseous hydrogen and the gaseous oxygen. The side wall of the pre-combustion chamber is provided with a second gas-oxygen passage; One end of the second oxygen channel is connected to the oxygen chamber and the other end is connected to the pre-combustion chamber. The second oxygen channel can guide part of the oxygen injected by the oxygen injection component into the pre-combustion chamber.

2. The oxygen-rich pre-combustion chamber for hydrogen and oxygen as described in claim 1, characterized in that, The first oxygen-gas passage includes a straight section and an outwardly expanding section that are interconnected along the direction from the gas hydrogen injection component to the pre-combustion chamber; The outer expansion section has a gradually expanding structure along the direction from the gaseous hydrogen injection component to the pre-combustion chamber.

3. The oxygen-rich pre-combustion chamber for hydrogen and oxygen as described in claim 1, characterized in that, The second oxygen-gas passage extends along the axial direction of the pre-combustion chamber, with its starting end located at the end of the pre-combustion chamber near the oxygen-gas injection component and its ending end located in the middle and rear part of the pre-combustion chamber.

4. The gaseous hydrogen-oxygen enriched pre-combustion chamber according to claim 1, characterized in that, The second oxygen channel is provided in multiple ways; Multiple second oxygen channels are arranged at equal intervals along the circumference of the pre-combustion chamber.

5. The gaseous hydrogen-oxygen enriched pre-combustion chamber according to claim 3 or 4, characterized in that, The gaseous oxygen injection component includes an injection panel; The injection panel has a groove structure with its open end facing the gaseous hydrogen injection component, so that the injection panel and the gaseous hydrogen injection component surround the gaseous oxygen chamber; Multiple first oxygen channels are arranged at equal intervals along the circumference of the injection panel near the center of the injection panel. The injection panel has a third oxygen channel along its circumference that communicates with the second oxygen channel.

6. The gaseous hydrogen-oxygen enriched pre-combustion chamber according to claim 5, characterized in that, The gaseous hydrogen injection component includes a gaseous hydrogen chamber top plate that can serve as the gaseous hydrogen fixing part and a gaseous hydrogen nozzle that can serve as the gaseous hydrogen injection part. The gaseous hydrogen nozzle includes a first injection section and a second injection section communicating with the first injection section; The first injection section is close to the top plate of the gas hydrogen chamber and has a tapered structure along the direction from the gas hydrogen injection component to the gas oxygen injection component; The second injection section is close to the gas-oxygen injection component and extends along the axial direction of the pre-combustion chamber.

7. The oxygen-rich pre-combustion chamber for hydrogen and oxygen as described in claim 1, characterized in that, The oxygen-rich pre-combustion chamber also includes a sealing element; The sealing elements are respectively disposed between the pre-combustion chamber and the gaseous oxygen injection component, and between the gaseous oxygen injection component and the gaseous hydrogen injection component.

8. The gaseous hydrogen-oxygen enriched pre-combustion chamber according to claim 1, characterized in that, The oxygen-rich pre-combustion chamber also includes connecting components. The connecting member can fix the gaseous hydrogen injection member and the gaseous oxygen injection member to the pre-combustion chamber.

9. A staged combustion cycle liquid rocket engine, characterized in that, Includes the oxygen-enriched pre-combustion chamber containing gaseous hydrogen and oxygen as described in any one of claims 1-8.

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