CN113090414A

CN113090414A - Attitude control engine

Info

Publication number: CN113090414A
Application number: CN202010015968.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Xinghe Power Equipment Technology Co Ltd; Galactic Energy Beijing Space Technology Co Ltd
Current assignee: Beijing Xinghe Power Equipment Technology Co Ltd; Galactic Energy Beijing Space Technology Co Ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2021-07-09

Abstract

The invention provides an attitude control engine. The attitude control engine comprises a thrust chamber, wherein the head of the thrust chamber is provided with a mixing cavity; the first electromagnetic valve is provided with a first channel, the first electromagnetic valve is connected with the thrust chamber, and the first channel can be selectively communicated with the mixing cavity by controlling the first electromagnetic valve; the second electromagnetic valve is provided with a second channel and is connected with the thrust chamber, and the second channel can be selectively communicated with the mixing cavity by controlling the second electromagnetic valve; and the sealing ring is arranged at the joint of the first electromagnetic valve and the thrust chamber, and the first electromagnetic valve is an oxidant electromagnetic valve. The joint of the oxidant electromagnetic valve and the thrust chamber is sealed by the sealing ring, so that the problem of unreliable sealing caused by a connection mode of a ball head or a pipeline in the prior art is solved. By adopting the technical scheme, the problem of leakage of the attitude control engine can be avoided in long-term use, and the practicability and reliability of the attitude control engine are effectively improved.

Description

Attitude control engine

Technical Field

The invention relates to the technical field of engine equipment, in particular to an attitude control engine.

Background

The attitude control engine is composed of a thrust chamber, an electromagnetic valve and a connecting structure of the electromagnetic valve, and propellant supply is realized by opening and closing the electromagnetic valve. The existing connecting structure is generally a ball head and pipeline connection, and an oxidant and a fuel respectively enter a thrust chamber head cavity through different pipelines. The ball head is adopted to connect the sealing structure, and the main problems are that the sealing structure is unreliable, the threaded connection of the joint is easy to loosen in a vibration environment, and the line sealing is failed and the propellant leaks. The main problem is that the pipeline is connected with the head of the thrust chamber by fillet welding, and the electromagnetic valve at the other end has larger mass, so that the fillet welding is easy to generate fatigue cracks in a vibration environment, and the leakage of the propellant is caused.

Disclosure of Invention

The invention mainly aims to provide an attitude control engine to solve the problem of unreliable engine sealing in the prior art;

to achieve the above object, according to one aspect of the present invention, there is provided an attitude control engine including: a thrust chamber, the head of the thrust chamber having a mixing chamber; the first electromagnetic valve is provided with a first channel and is connected with the thrust chamber, and the first channel can be selectively communicated with the mixing cavity by controlling the first electromagnetic valve; the second electromagnetic valve is provided with a second channel and is connected with the thrust chamber, and the second channel can be selectively communicated with the mixing cavity by controlling the second electromagnetic valve; the sealing ring is arranged at the joint of the first electromagnetic valve and the thrust chamber, wherein the first electromagnetic valve is an oxidant electromagnetic valve;

furthermore, a connecting column is arranged at the end part of the first electromagnetic valve, an electromagnetic valve flange is arranged on the circumferential direction of the connecting column, a connecting concave part matched with the connecting column is formed in one end, facing the first electromagnetic valve, of the thrust chamber, a thrust chamber flange is arranged on the outer circumferential side of the connecting concave part, the electromagnetic valve flange is connected with the thrust chamber flange through a connecting piece, and a sealing ring is arranged between the end part of the connecting column and the bottom of the connecting concave part;

furthermore, an annular sealing groove is formed in the end face of the connecting column, the sealing ring is an O-shaped sealing ring, and part of the sealing ring is located in the annular sealing groove;

furthermore, an annular sealing groove is formed in the bottom of the connecting concave part, and part of the sealing ring is located in the annular sealing groove;

furthermore, a first annular sealing groove is formed in the end face of the connecting column, a second annular sealing groove is formed in the bottom of the connecting concave part, the first annular sealing groove and the second annular sealing groove are oppositely arranged, an annular sealing cavity is defined by the first annular sealing groove and the second annular sealing groove, and the sealing ring is located in the annular sealing cavity;

furthermore, the second electromagnetic valve is a fuel electromagnetic valve, and the axis of the fuel electromagnetic valve and the axis of the second electromagnetic valve are arranged in an included angle;

further, the axis of the second solenoid valve is arranged perpendicular to the axis of the second solenoid valve;

further, the connecting piece is a bolt;

furthermore, one end of the mixing cavity, which is close to the body part of the thrust chamber, is provided with a flow distribution plate and an injector, and the injector is far away from the mixing cavity;

further, the axis of the first solenoid valve is arranged collinearly with the axis of the body of the thrust chamber;

by applying the technical scheme of the invention, the joint of the oxidant electromagnetic valve and the thrust chamber is sealed by the sealing ring, so that the problem of unreliable sealing caused by a ball head or pipeline connection mode adopted in the prior art is solved. By adopting the technical scheme, the problem of leakage of the attitude control engine can be avoided in long-term use, and the practicability and reliability of the attitude control engine are effectively improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic block diagram of an embodiment of an attitude control engine according to the present disclosure;

FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;

FIG. 3 shows a cross-sectional structural schematic of an embodiment of an attitude control engine according to the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to the embodiments with reference to the accompanying drawings;

it is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

it should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus;

exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted;

referring to fig. 1-3, according to an embodiment of the present application, an attitude control engine is provided. The attitude control engine comprises a thrust chamber 3, a first electromagnetic valve 1, a second electromagnetic 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 passage, and the first solenoid valve 1 is connected to the thrust chamber 3, and the first solenoid valve 1 is controlled so that the first passage is selectively communicated with the mixing chamber 11. The second solenoid valve 2 has a second passage, and the second solenoid valve 2 is connected to the thrust chamber 3, and the second solenoid valve 2 is controlled so that the second passage is selectively communicated with the mixing chamber 11. The sealing ring 7 is arranged at the joint of the first electromagnetic valve 1 and the thrust chamber 3, wherein the first electromagnetic valve 1 is an oxidant electromagnetic valve;

in this embodiment, adopt the sealing washer to seal at the junction of oxidant solenoid valve and thrust chamber 3, avoided the unreliable problem of sealing that the connected mode of bulb or pipeline that adopts causes among the prior art. By adopting the technical scheme, the problem of leakage of the attitude control engine can be avoided in long-term use, and the practicability and reliability of the attitude control engine are effectively improved;

as shown in fig. 1 and 2, a connection column 10 is disposed at an end of the first solenoid valve 1, a solenoid valve flange 5 is disposed around the connection column 10, a connection recess matched with the connection column 10 is formed at one end of the thrust chamber 3 facing the first solenoid valve 1, a thrust chamber flange 6 is disposed at an outer peripheral side of the connection recess, the solenoid valve flange 5 is connected with the thrust chamber flange 6 through a connection piece, and a seal ring 7 is disposed between the end of the connection column 10 and a bottom of the connection recess. An annular sealing groove is formed in the end face of the connecting column 10, the sealing ring 7 is an O-shaped sealing ring, and part of the sealing ring 7 is located in the annular sealing groove;

according to another embodiment of the application, the bottom of the connecting concave part is provided with an annular sealing groove, and part of the sealing ring 7 is positioned in the annular sealing groove. Or, a first annular sealing groove is formed in the end face of the connecting column 10, a second annular sealing groove is formed in the bottom of the connecting concave portion, the first annular sealing groove and the second annular sealing groove are oppositely arranged, an annular sealing cavity is formed by the first annular sealing groove and the second annular sealing groove in an enclosing mode, and the sealing ring 7 is located in the annular sealing cavity. The arrangement can also improve the sealing property between the first electromagnetic valve 1 and the thrust chamber 3;

further, the second electromagnetic valve 2 is a fuel electromagnetic valve, and the axis of the fuel electromagnetic valve and the axis of the second electromagnetic valve 2 are arranged with an included angle. Preferably, the axis of the second solenoid valve 2 is arranged perpendicular to the axis of the second solenoid valve 2. The connecting piece is a bolt. As shown in fig. 2 and 3, one end of the mixing chamber 11 close to the body 4 of the thrust chamber 3 is provided with a flow distribution plate 8 and an injector 9, and the injector 9 is located away from the mixing chamber 11. The axis of the first solenoid valve 1 is arranged collinearly with the axis of the body 4 of the thrust chamber 3;

in this application, adopt O type sealing washer and flange joint, guaranteed connection structure's sealing reliability and intensity reliability simultaneously. The O-shaped sealing ring is arranged in the sealing groove and is matched with the sealing surface of the head of the thrust chamber to form self-tightening sealing. After the electromagnetic valve is electrified and opened, oxidant and fuel simultaneously enter the head part of the thrust chamber, flow channel isolation is realized through the flow distribution plate 8, and finally the oxidant and the fuel reach a combustion area at the front end of the body part 4 of the thrust chamber through the injector 9;

as shown in fig. 3, after the splitter plate 8 and the injector 9 are assembled with the head of the thrust chamber, the outer circle of the inlet of the injector 9 and the head of the thrust chamber, and the outer circle of the outlet of the injector 9 and the head of the thrust chamber are welded by electron beams to form two circumferential welding seams, so that the separation of the oxidant chamber and the fuel chamber is ensured. After welding, the flatness and roughness requirements of a sealing surface formed by the inlet of the injector 9 and the head of the thrust chamber are met by machining the sealing surface again, and the O-shaped sealing ring is ensured to form reliable sealing;

spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly;

in addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments;

in the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments;

the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An attitude control engine, comprising:

a thrust chamber (3), the head of the thrust chamber (3) having a mixing chamber (11);

a first solenoid valve (1), wherein the first solenoid valve (1) is provided with a first channel, the first solenoid valve (1) is connected with the thrust chamber (3), and the first channel can be selectively communicated with the mixing cavity (11) by controlling the first solenoid valve (1);

a second solenoid valve (2), wherein the second solenoid valve (2) is provided with a second channel, the second solenoid valve (2) is connected with the thrust chamber (3), and the second channel can be selectively communicated with the mixing cavity (11) by controlling the second solenoid valve (2);

the sealing ring (7) is arranged at the joint of the first electromagnetic valve (1) and the thrust chamber (3);

wherein the first electromagnetic valve (1) is an oxidant electromagnetic valve.

2. An attitude control engine according to claim 1, characterized in that a connection column (10) is provided at an end of the first solenoid valve (1), a solenoid valve flange (5) is provided at a circumference of the connection column (10), a connection recess matched with the connection column (10) is provided at an end of the thrust chamber (3) facing the first solenoid valve (1), a thrust chamber flange (6) is provided at an outer circumference side of the connection recess, the solenoid valve flange (5) and the thrust chamber flange (6) are connected by a connecting member, and the sealing ring (7) is provided between the end of the connection column (10) and a bottom of the connection recess.

3. An attitude control engine according to claim 2, wherein an annular sealing groove is formed in the end face of the connecting column (10), the sealing ring (7) is an O-shaped sealing ring, and part of the sealing ring (7) is located in the annular sealing groove.

4. An attitude control engine according to claim 2, wherein the bottom of the connecting recess is provided with an annular seal groove, and part of the seal ring (7) is located in the annular seal groove.

5. An attitude control engine according to claim 2, wherein a first annular seal groove is formed in an end face of the connecting column (10), a second annular seal groove is formed in a bottom of the connecting recess, the first annular seal groove and the second annular seal groove are oppositely arranged, an annular seal cavity is defined by the first annular seal groove and the second annular seal groove, and the seal ring (7) is located in the annular seal cavity.

6. An attitude controlled engine according to claim 1, characterised in that the second solenoid valve (2) is a fuel solenoid valve, the axis of which is disposed at an angle to the axis of the second solenoid valve (2).

7. An attitude controlled engine according to claim 6, characterized in that the axis of the second solenoid valve (2) is arranged perpendicular to the axis of the second solenoid valve (2).

8. An attitude control engine according to claim 2, wherein the connection member is a bolt.

9. An attitude control engine according to claim 1, characterized in that the end of the mixing chamber (11) close to the body (4) of the thrust chamber (3) is provided with a splitter plate (8) and an injector (9), the injector (9) being located away from the mixing chamber (11).

10. An attitude control engine according to claim 1, characterized in that the axis of the first solenoid valve (1) is disposed collinearly with the axis of the body portion (4) of the thrust chamber (3).