Attitude control engine

Abstract

The present invention provides an attitude control engine. The attitude control engine includes a thrust chamber, the head of the thrust chamber has a mixing chamber; a first solenoid valve has a first channel, the first solenoid valve is connected to the thrust chamber, and the first solenoid valve is controlled to enable the first channel to be selectively connected to the mixing chamber; a second solenoid valve, the second solenoid valve has a second channel, the second solenoid valve is connected to the thrust chamber, and the second solenoid valve is controlled to enable the second channel to be selectively connected to the mixing chamber; a sealing ring, the sealing ring is arranged at the connection between the first solenoid valve and the thrust chamber, and the first solenoid valve is an oxidant solenoid valve. A sealing ring is used to seal the connection between the oxidant solenoid valve and the thrust chamber, thereby avoiding the problem of unreliable sealing caused by the connection method of the ball head or pipeline used in the prior art. The technical solution of the present application can prevent the attitude control engine from leaking during long-term use, effectively improving the practicality and reliability of the attitude control engine.

Description

Technical Field

[0001] The present invention relates to the technical field of engine equipment design, and in particular to an attitude control engine. Background Art

[0002] The attitude control engine consists of a thrust chamber, a solenoid valve and its connection structure, and the propellant supply is achieved by opening and closing the solenoid valve. The existing connection structure is generally a "ball head + pipeline" connection, and the oxidizer and fuel enter the thrust chamber head cavity through different pipelines. The main problem with the ball head connection sealing structure is that the sealing structure is unreliable, and the threaded connection of the joint is prone to loosening in a vibration environment, causing the line seal to fail and the propellant to leak. The main problem with the pipeline connection is that the pipeline and the thrust chamber head are connected by a fillet weld, and the mass of the solenoid valve at the other end is large, which makes the fillet weld prone to fatigue cracks in a vibration environment, causing propellant leakage. Summary of the invention

[0003] The main purpose of the present invention is to provide an attitude control engine to solve the problem of unreliable engine sealing in the prior art;

[0004] In order to achieve the above-mentioned object, according to one aspect of the present invention, there is provided an attitude control engine, comprising: a thrust chamber, the head of the thrust chamber having a mixing chamber; a first solenoid valve, the first solenoid valve having a first channel, the first solenoid valve being connected to the thrust chamber, and the first channel being selectively connected to the mixing chamber by controlling the first solenoid valve; a second solenoid valve, the second solenoid valve having a second channel, the second solenoid valve being connected to the thrust chamber, and the second channel being selectively connected to the mixing chamber by controlling the second solenoid valve; a sealing ring, the sealing ring being arranged at the connection between the first solenoid valve and the thrust chamber, wherein the first solenoid valve is an oxidant solenoid valve;

[0005] Further, a connecting column is provided at the end of the first solenoid valve, a solenoid valve flange is provided on the circumference of the connecting column, a connecting recess matched with the connecting column is provided at one end of the thrust chamber facing the first solenoid valve, a thrust chamber flange is provided on the outer circumference of the connecting recess, the solenoid valve flange and the thrust chamber flange are connected through a connecting piece, and a sealing ring is provided between the end of the connecting column and the bottom of the connecting recess;

[0006] Furthermore, an annular sealing groove is provided on the end surface of the connecting column, the sealing ring is an O-type sealing ring, and part of the sealing ring is located in the annular sealing groove;

[0007] Furthermore, an annular sealing groove is provided at the bottom of the connecting recess, and a portion of the sealing ring is located in the annular sealing groove;

[0008] Furthermore, a first annular sealing groove is formed on the end surface of the connecting column, and a second annular sealing groove is formed on the bottom of the connecting recess, the first annular sealing groove and the second annular sealing groove are arranged opposite to each other, the first annular sealing groove and the second annular sealing groove enclose an annular sealing cavity, and the sealing ring is located in the annular sealing cavity;

[0009] Further, the second solenoid valve is a fuel solenoid valve, and the axis of the fuel solenoid valve is arranged at an angle to the axis of the second solenoid valve;

[0010] Further, the axis of the second solenoid valve is arranged perpendicular to the axis of the second solenoid valve;

[0011] Further, the connecting member is a bolt;

[0012] Furthermore, a flow divider and an injector are provided at one end of the mixing chamber close to the thrust chamber, and the injector is arranged away from the mixing chamber;

[0013] Further, the axis of the first solenoid valve is arranged colinearly with the axis of the body of the thrust chamber;

[0014] By applying the technical solution of the present invention, a sealing ring is used to seal the connection between the oxidizer solenoid valve and the thrust chamber, thereby avoiding the problem of unreliable sealing caused by the connection method of the ball head or pipeline used in the prior art. By adopting the technical solution of the present application, the attitude control engine will not leak during long-term use, effectively improving the practicality and reliability of the attitude control engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic structural diagram of an embodiment of a posture control engine according to the present invention is shown;

[0017] Figure 2 Shows Figure 1 A-A cross-sectional structural diagram;

[0018] Figure 3 A cross-sectional structural schematic diagram of an embodiment of an attitude control engine according to the present invention is shown. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments;

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or apparatuses;

[0022] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted;

[0023] Combination Figures 1 to 3 As shown, according to a specific embodiment of the present application, an attitude control engine is provided. The attitude control engine includes a thrust chamber 3, a first solenoid valve 1, a second solenoid valve 2 and a sealing ring 7. The head of the thrust chamber 3 has a mixing chamber 11. The first solenoid valve 1 has a first channel, and the first solenoid valve 1 is connected to the thrust chamber 3. Controlling the first solenoid valve 1 allows the first channel to be selectively connected to the mixing chamber 11. The second solenoid valve 2 has a second channel, and the second solenoid valve 2 is connected to the thrust chamber 3. Controlling the second solenoid valve 2 allows the second channel to be selectively connected to the mixing chamber 11. The sealing ring 7 is arranged at the connection between the first solenoid valve 1 and the thrust chamber 3, wherein the first solenoid valve 1 is an oxidizer solenoid valve;

[0024] In this embodiment, a sealing ring is used to seal the connection between the oxidizer solenoid valve and the thrust chamber 3, thereby avoiding the problem of unreliable sealing caused by the connection method of the ball head or pipeline used in the prior art. The technical solution of the present application can prevent the attitude control engine from leaking during long-term use, effectively improving the practicality and reliability of the attitude control engine;

[0025] Among them, Figure 1 and Figure 2 As shown, a connecting column 10 is provided at the end of the first solenoid valve 1, and a solenoid valve flange 5 is provided in the circumferential direction of the connecting column 10. A connecting recess matched with the connecting column 10 is provided at one end of the thrust chamber 3 facing the first solenoid valve 1, and a thrust chamber flange 6 is provided on the outer circumferential side of the connecting recess. The solenoid valve flange 5 and the thrust chamber flange 6 are connected by a connecting piece, and a sealing ring 7 is provided between the end of the connecting column 10 and the bottom of the connecting recess. An annular sealing groove is provided on the end surface of the connecting column 10, and the sealing ring 7 is an O-type sealing ring, and part of the sealing ring 7 is located in the annular sealing groove;

[0026] According to another embodiment of the present application, an annular sealing groove is provided at the bottom of the connecting recess, and part of the sealing ring 7 is located in the annular sealing groove. Alternatively, a first annular sealing groove is provided on the end surface of the connecting column 10, and a second annular sealing groove is provided at the bottom of the connecting recess, the first annular sealing groove and the second annular sealing groove are arranged opposite to each other, the first annular sealing groove and the second annular sealing groove are arranged to form an annular sealing cavity, and the sealing ring 7 is located in the annular sealing cavity. This arrangement can also improve the sealing performance between the first solenoid valve 1 and the thrust chamber 3;

[0027] Further, the second solenoid valve 2 is a fuel solenoid valve, and the axis of the fuel solenoid valve is arranged at an angle with the axis of the second solenoid valve 2. Preferably, the axis of the second solenoid valve 2 is arranged perpendicular to the axis of the second solenoid valve 2. The connecting member is a bolt. Figure 2 and Figure 3 As shown, a diverter plate 8 and an injector 9 are provided at one end of the body 4 of the mixing chamber 11 close to the thrust chamber 3, and the injector 9 is arranged away from the mixing chamber 11. The axis of the first solenoid valve 1 is arranged colinearly with the axis of the body 4 of the thrust chamber 3;

[0028] In this application, O-ring and flange connection are used to ensure the sealing reliability and strength reliability of the connection structure. The O-ring is installed in the sealing groove and cooperates with the sealing surface of the thrust chamber head to form a self-tightening seal. After the solenoid valve is powered on and opened, the oxidant and fuel enter the thrust chamber head at the same time, and the flow channel is isolated through the diverter plate 8, and finally reaches the front combustion area of ​​the thrust chamber body 4 through the injector 9;

[0029] like Figure 3As shown, after the manifold 8, the injector 9 and the thrust chamber head are assembled, the outer circle of the injector 9 inlet and the thrust chamber head, and the outer circle of the injector 9 outlet and the thrust chamber head are welded by electron beam welding to form two circumferential welds, which ensures the isolation of the oxidant chamber and the fuel chamber. After welding, the sealing surface formed by the injector 9 inlet and the thrust chamber head is machined again to meet the flatness and roughness requirements, ensuring that the O-ring forms a reliable seal;

[0030] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein shall be interpreted accordingly;

[0031] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention;

[0032] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An attitude control engine, characterized in that: include: A thrust chamber (3), wherein the head of the thrust chamber (3) has a mixing chamber (11); A first solenoid valve (1), wherein the first solenoid valve (1) has a first channel, the first solenoid valve (1) is connected to the thrust chamber (3), and the first channel can be connected to the mixing chamber (11) by controlling the first solenoid valve (1); a second solenoid valve (2), the second solenoid valve (2) having a second channel, the second solenoid valve (2) being connected to the thrust chamber (3), and the second channel being connected to the mixing chamber (11) by controlling the second solenoid valve (2); A sealing ring (7), wherein the sealing ring (7) is arranged at the connection between the first solenoid valve (1) and the thrust chamber (3); Wherein, the first solenoid valve (1) is an oxidant solenoid valve; A connecting column (10) is provided at the end of the first solenoid valve (1), and a solenoid valve flange (5) is provided on the circumference of the connecting column (10). A connecting recess matching with the connecting column (10) is provided at one end of the thrust chamber (3) facing the first solenoid valve (1), and a thrust chamber flange (6) is provided on the outer circumference of the connecting recess. The solenoid valve flange (5) and the thrust chamber flange (6) are connected via a connecting piece, and the sealing ring (7) is provided between the end of the connecting column (10) and the bottom of the connecting recess.

2. The attitude control engine according to claim 1, characterized in that: An annular sealing groove is provided on the end surface of the connecting column (10); the sealing ring (7) is an O-type sealing ring, and a portion of the sealing ring (7) is located in the annular sealing groove.

3. The attitude control engine according to claim 2, characterized in that: An annular sealing groove is provided at the bottom of the connecting recess, and a portion of the sealing ring (7) is located in the annular sealing groove.

4. The attitude control engine according to claim 2, characterized in that: A first annular sealing groove is provided on the end surface of the connecting column (10), and a second annular sealing groove is provided at the bottom of the connecting recess. The first annular sealing groove and the second annular sealing groove are arranged opposite to each other, and the first annular sealing groove and the second annular sealing groove enclose an annular sealing cavity, and the sealing ring (7) is located in the annular sealing cavity.

5. The attitude control engine according to claim 1, characterized in that: The second solenoid valve (2) is a fuel solenoid valve, and the axis of the fuel solenoid valve is arranged at an angle to the axis of the first solenoid valve (1).

6. The attitude control engine according to claim 1, characterized in that: The axis of the second solenoid valve (2) is arranged perpendicular to the axis of the first solenoid valve (1).

7. The attitude control engine according to claim 2, characterized in that: The connecting piece is a bolt.

8. The attitude control engine according to claim 1, characterized in that: A flow divider (8) and an injector (9) are arranged at one end of the body (4) of the mixing chamber (11) close to the thrust chamber (3), and the injector (9) is arranged away from the mixing chamber (11).

9. The attitude control engine according to claim 1, characterized in that: The axis of the first solenoid valve (1) is arranged colinearly with the axis of the body (4) of the thrust chamber (3).

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