CN217713654U - Stop valve for rocket engine and rocket engine - Google Patents

Abstract

The utility model discloses a stop valve and rocket engine for rocket engine, wherein the stop valve is through being equipped with first space in the valve body, the second space and the window that dams, the case has first utmost point spacing and second utmost point spacing, drive division is located on the valve body, and be connected with the case, drive the valve core through the drive division reciprocating motion between first utmost point spacing and second utmost point spacing, when the case moves towards second utmost point spacing, the case blocks the window that dams gradually, it damps the window to lie in second utmost point position shutoff until the case, realize fluidic flow control, and need not a plurality of external component and assemble the operation, reduce pipe-line system's complexity, reduce the engine unit number, reduce overall structure weight simultaneously, improve the stability of this stop valve operation under the different work condition of rocket engine.

Description

Stop valve for rocket engine and rocket engine

Technical Field

The application relates to the technical field of liquid rocket engines, in particular to a stop valve for a rocket engine and the rocket engine.

Background

With variable thrust liquid rocket engines for returnable rockets becoming a research focus in China. The liquid rocket engine changes thrust by adjusting the flow of propellant, and the device for adjusting the flow is mainly an adjusting valve. Various stop valves are also required on the liquid rocket engine, and the on-off of the propellant is controlled by opening and closing.

At present, the commonly used liquid rocket engine stop valve in China mainly takes a pneumatic bacteria valve or a pneumatic ball valve. Because the valve core is driven to move mainly by compressed gas to achieve the purpose of opening and closing the valve, the adjustment function is difficult to integrate.

The typical supply system of traditional adjustable engine one-way propellant should contain each one of pneumatic stop valve, flow control valve and control solenoid valve, needs two kinds of valves of governing valve and stop valve to come control switch and regulation flow on a supply line, leads to the pipe-line system complicated, and engine unit number is various, and overall structure weight is big, and the holistic degree of integrating of stop valve is low, and the function is made up in the multicomponent assembly, poor stability.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, this application provides a stop valve and rocket engine for rocket engine to the stop valve that solves among the prior art needs the multicomponent interlock just can carry out flow control's problem.

The above object of the present invention is achieved by the following technical solutions:

a stop valve for a rocket engine, comprising:

the valve comprises a valve body, a valve body and a valve body, wherein an inlet for fluid to enter and an outlet for fluid to discharge are formed in the valve body, a first space communicated with the inlet and a second space communicated with the outlet are formed in the valve body, and a closure window communicated with the second space is formed in the side wall of the first space;

the valve core is movably arranged in the second space and is provided with a first limit position and a second limit position;

the driving part is arranged on the valve body and connected with the valve core so as to drive the valve core to reciprocate between the first limit position and the second limit position, and when the valve core moves towards the second limit position, the valve core gradually blocks the closure window until the valve core is positioned at the second limit position to block the closure window.

Furthermore, the intercepting window is a rectangular through hole or a trapezoidal through hole.

Further, the intercepting window is provided with a plurality of intercepting windows.

Further, the first space is annular.

Further, a plurality of the intercepting windows are distributed on the inner wall of the first space at intervals along the circumferential direction.

Furthermore, an annular groove is formed in the edge of one side, close to the first space, of the outlet, a convex ring matched with the annular groove is arranged on the end face, close to the outlet, of the valve core, and when the valve core is located at the second limit position, the convex ring extends into the annular groove.

Furthermore, a sealing part is arranged on the inner side of the convex ring, and when the valve core is positioned at the second limit position, the sealing part is attached to the edge of the outlet.

Further, the sealing portion is a sealing rubber gasket.

Further, the driving part is an electric servo system.

Based on the same utility model concept, the utility model discloses still provide a rocket engine, be used for rocket engine's stop valve including the aforesaid.

Compared with the prior art, the utility model has the advantages of:

the stop valve in the utility model is provided with an inlet for fluid entering and an outlet for fluid discharging on the valve body, a first space communicated with the inlet and a second space communicated with the outlet are arranged in the valve body, a cut-off window communicated with the second space is arranged on the side wall of the first space, the valve core is movably arranged in the second space, and the valve core is provided with a first limit position and a second limit position; the driving part is arranged on the valve body and connected with the valve core, the valve core is driven by the driving part to reciprocate between a first limit position and a second limit position, when the valve core moves towards the second limit position, the valve core gradually blocks the closure window until the valve core is positioned at the second limit position to block the closure window, the flow of fluid is realized, when the valve core is at a first limit position, the flow in the valve body is maximum, the fluid enters a first space from an inlet and is discharged from an outlet after entering a second space through the closure window, in the process of moving towards the second limit position, the valve core is gradually overlapped with the closure window, the closure window is partially blocked by the valve core, the flow of the fluid is reduced, the size of the accurate control flow is realized by controlling the overlapping degree of the valve core and the closure window, the assembling operation of a plurality of external components is not needed, the complexity of a pipeline system is reduced, the number of engine components is reduced, the weight of the whole structure is reduced, and the running stability of the stop valve under different working conditions of the engine is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a stop valve provided in an embodiment of the present application;

FIG. 2 is a partial cross-sectional view of a shut-off valve provided in an embodiment of the present application;

in the figure: 1. a valve body; 11. an inlet; 12. an outlet; 13. a first space; 14. a second space; 15. a flow-stopping window; 16. an annular groove; 2. a valve core; 21. a convex ring; 22. a sealing part; 3. a drive section.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments of the present invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

Example 1

As shown in fig. 1-2, a shutoff valve for a rocket engine includes a valve body 1, a spool 2, and a driving portion 3, wherein:

an inlet 11 for fluid to enter and an outlet 12 for fluid to discharge are opened on the valve body 1, a first space 13 communicated with the inlet 11 and a second space 14 communicated with the outlet 12 are arranged in the valve body 1, and a closure window 15 communicated with the second space 14 is opened on the side wall of the first space 13.

The valve core 2 is movably arranged in the second space 14, and the valve core 2 has a first limit position and a second limit position.

The driving part 3 is arranged on the valve body 1 and connected with the valve core 2 to drive the valve core 2 to reciprocate between the first limit position and the second limit position, when the valve core 2 moves towards the second limit position, the valve core 2 gradually blocks the interception window 15 until the valve core 2 is positioned at the second limit position to block the interception window 15.

When the valve cartridge 2 is moved to the first extreme position, fluid enters the first space 13 in the valve body 1 from the inlet 11 and enters the second space 14 from the shut-off window 15 and exits the valve body 1 from the outlet 12.

When the valve core 2 moves to the second limit position, the fluid enters the first space 13 in the valve body 1 from the inlet 11, and the interception window 15 between the first space 13 and the second space 14 is blocked under the blocking of the valve core 2, so that the obstruction of the fluid in the first space 13 is realized.

The operating principle of the stop valve in this embodiment is: an inlet 11 used for fluid to enter and an outlet 12 used for fluid to discharge are formed in the valve body 1, a first space 13 communicated with the inlet 11 and a second space 14 communicated with the outlet 12 are formed in the valve body 1, a flow-stopping window 15 communicated with the second space 14 is formed in the side wall of the first space 13, the valve core 2 is movably arranged in the second space 14, and the valve core 2 is provided with a first limit position and a second limit position; the driving part 3 is arranged on the valve body 1 and connected with the valve core 2, the valve core 2 is driven by the driving part 3 to reciprocate between a first limit position and a second limit position, when the valve core 2 moves towards the second limit position, the valve core 2 gradually blocks the intercepting window 15 until the valve core 2 is positioned at the second limit position to block the intercepting window 15, the flow rate of fluid is controlled, when the valve core 2 is at a first limit position, the flow rate in the valve body 1 is maximum, the fluid enters the first space 13 from the inlet 11 and is discharged from the outlet 12 after entering the second space 14 through the intercepting window 15, the valve core 2 gradually overlaps with the intercepting window 15 in the moving process towards the second limit position, the intercepting window 15 is partially blocked by the valve core 2, the flow rate of the fluid is reduced, the size of accurate flow rate control is realized by controlling the overlapping degree of the valve core 2 and the intercepting window 15, a plurality of external components are not needed to be assembled, the complexity of a pipeline system is reduced, the number of engine components is reduced, the weight of the whole structure is reduced, and the running stability of the rocket stop valve under different working conditions of an engine is improved.

Further, in the above embodiment, the intercepting window 15 is formed as a rectangular through hole or a trapezoidal through hole.

When the intercepting window 15 is provided, the design can be correspondingly performed according to the volume of the first space 13 in the valve body 1 and the flow rate of the fluid at the intercepting window 15.

When the intercepting window 15 is set as a rectangular through hole, the valve core 2 is gradually overlapped with the intercepting window 15 in the process of moving from the first limit position to the second limit position, the intercepting window 15 is partially blocked by the valve core 2, so that the flow of the fluid at the intercepting window 15 is reduced, the size of the accurate control flow is realized by controlling the overlapping degree of the valve core 2 and the intercepting window 15, and because the intercepting window 15 is set as a rectangular through hole, the two opposite sides of the rectangular section are arranged in parallel, when the valve core 2 moves at a constant speed, the speed of the flow reduction of the fluid at the intercepting window 15 is also average.

When the intercepting window 15 is a trapezoidal through hole, in the process that the valve core 2 moves from the first limit position to the second limit position, the valve core 2 is gradually overlapped with the intercepting window 15, the intercepting window 15 is partially blocked by the valve core 2, so that the flow of fluid at the intercepting window 15 is reduced, the flow is accurately controlled by controlling the overlapping degree of the valve core 2 and the intercepting window 15, and because the intercepting window 15 is a trapezoidal through hole, the width of one side of the trapezoidal section is smaller than that of the other side, when the valve core 2 moves at a constant speed, the speed of reducing the flow of the fluid at the intercepting window 15 is first fast and then slow or first slow and then fast.

So that the flow velocity of the fluid needs to be adjusted or the valve core 2 is moved, and the applicability is improved, and the intercepting window 15 may also be a circular through hole or a circular arc through hole or other through holes with different cross-sectional shapes, which will not be described herein.

Further, on the basis of the above embodiment, the intercepting window 15 is provided in plurality, so as to improve the flow rate of the fluid per unit time, and facilitate the fluid in the first space 13 to uniformly enter the second space 14.

Further, on the basis of the above embodiment, the first space 13 is annular, so that the distribution uniformity of the fluid in the first space 13 is further improved, and when the valve element 2 is located at the first limit position, the fluid in the first space 13 can quickly pass through the intercepting window 15 and then enter the second space 14.

Further, on the basis of the above embodiment, a plurality of the intercepting windows 15 are circumferentially distributed on the inner wall of the first space 13 at intervals, so that the fluid is further kept to simultaneously pass through the intercepting windows 15 from all directions of the first space 13 and enter the second space 14, and the smoothness is improved.

Further, on the basis of the above embodiment, an annular groove 16 is provided on a side edge of the outlet 12 close to the first space 13, a protruding ring 21 adapted to the annular groove 16 is provided on an end surface of the valve element 2 close to the outlet 12, and when the valve element 2 is located at the second limit position, the protruding ring 21 extends into the annular groove 16.

So that the convex ring 21 is matched with the annular groove 16, the contact area between the valve core 2 and the inner wall of the valve body 1 is increased, and the sealing effect of the valve core 2 is improved.

Further, on the basis of the above embodiment, a sealing portion 22 is disposed inside the convex ring 21, and when the valve element 2 is located at the second limit position, the sealing portion 22 is attached to the edge of the outlet 12.

Under the prerequisite that bulge loop 21 and ring channel 16 matched with, sealing 22 laminating is on export 12 one side border, specifically says, just set up the shape that can laminate mutually with export 12 one side with sealing 22 near a side terminal surface of export 12, when case 2 was located the second limit, sealing 22 was direct to be laminated with export 12 one side, further increased sealed degree.

Further, in addition to the above-mentioned embodiments, the sealing portion 22 is a sealing rubber pad, and the deformation capability of the sealing rubber pad improves the degree of sealing with the edge of the outlet 12, reduces the requirement of the processing precision of the sealing portion 22, and reduces the requirement of the fitting degree during production and manufacturing.

Further, on the basis of the above embodiment, the driving portion 3 is an electric servo system to drive the valve plug 2 to reciprocate between the first limit position and the second limit position, and the moving speed and the moving period of the valve plug 2 can be adjusted by the electric servo system.

Example 2

Based on the same utility model concept, the utility model also provides a rocket engine, the stop valve that is used for the rocket engine in embodiment 1 is concrete, and in this rocket engine, except that the stop valve in the above-mentioned embodiment is adopted to the structure of stop valve, the relevant disclosure that can all refer to prior art such as the structure, the relation of connection, mounted position of other devices, do not do here and expand the description.

It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" herein is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: the three cases of A alone, B alone and A and B together exist, and the term "/and" in this document describes another associated object relationship, which means that two relationships may exist, for example, A/and B, which may mean: the presence of a alone, and both cases a and B alone, and further, the character "/" herein generally means that the former and latter associated objects are in an "or" relationship.

It is to be understood that in the description of the present invention, the terms "upper", "vertical", "inner", "outer", and the like, refer to an orientation or positional relationship that is conventionally used to place the disclosed product in use, or that is conventionally understood by those skilled in the art, and are used merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. In other instances, well-known processes, structures and techniques may not be shown in unnecessary detail in order to avoid obscuring the example embodiments.

The above are merely exemplary embodiments of the present application and are intended to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A stop valve for a rocket engine, comprising:

the valve comprises a valve body (1), wherein an inlet (11) for fluid to enter and an outlet (12) for fluid to discharge are formed in the valve body (1), a first space (13) communicated with the inlet (11) and a second space (14) communicated with the outlet (12) are formed in the valve body (1), and a closure window (15) communicated with the second space (14) is formed in the side wall of the first space (13);

the valve core (2) is movably arranged in the second space (14), and the valve core (2) is provided with a first limit position and a second limit position;

the driving part (3) is arranged on the valve body (1) and connected with the valve core (2) to drive the valve core (2) to reciprocate between the first limit position and the second limit position, and when the valve core (2) moves towards the second limit position, the valve core (2) gradually blocks the intercepting window (15) until the valve core (2) is located at the second limit position to block the intercepting window (15).

2. A shut-off valve for a rocket engine as recited in claim 1, wherein: the intercepting window (15) is a rectangular through hole or a trapezoidal through hole.

3. A shut-off valve for a rocket engine as recited in claim 1, wherein: the intercepting window (15) is provided with a plurality of intercepting windows.

4. A shut-off valve for a rocket engine as recited in claim 3, wherein: the first space (13) is annular.

5. A shut-off valve for a rocket engine as recited in claim 4, wherein: the plurality of intercepting windows (15) are distributed on the inner wall of the first space (13) at intervals along the circumferential direction.

6. A shut-off valve for a rocket engine as recited in claim 1, wherein: an annular groove (16) is formed in the edge of one side, close to the first space (13), of the outlet (12), a convex ring (21) matched with the annular groove (16) is arranged on the end face, close to the outlet (12), of the valve core (2), and when the valve core (2) is located at the second limit position, the convex ring (21) extends into the annular groove (16).

7. A shut-off valve for a rocket engine as recited in claim 6, wherein: and a sealing part (22) is arranged on the inner side of the convex ring (21), and when the valve core (2) is positioned at the second limit position, the sealing part (22) is attached to the edge of the outlet (12).

8. A shut-off valve for a rocket engine as recited in claim 7, wherein: the sealing part (22) is a sealing rubber gasket.

9. A shut-off valve for a rocket engine as recited in claim 1, wherein: the driving part (3) is an electric servo system.

10. A rocket engine, characterized by: comprising a shut-off valve for a rocket engine as claimed in any one of claims 1 to 9.

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