An integrated valve group and a rocket engine

Abstract

The present application discloses an integrated valve group and a rocket engine. The main body of the integrated valve group is provided with more than one main path channel assembly and auxiliary path channel assembly. There are multiple second intake channels, first exhaust channels, first valve cavities, and second valve cavities respectively. Each first exhaust channel is respectively communicated with the first intake channel through the corresponding first valve cavity, and moreover, each first exhaust channel is respectively communicated with the corresponding second intake channel through the corresponding second valve cavity. Each second exhaust channel is respectively communicated with the third intake channel through the corresponding third valve cavity. Each second exhaust channel among more than one second exhaust channels is respectively communicated with the second intake channel through one third valve cavity among more than one third valve cavities. The rocket engine of the present application adopts the integrated valve group, effectively reducing the number of check valves and corresponding pipe fittings, joints, etc., reducing the mass of the engine, and optimizing the layout of the rocket engine.

Description

Technical Field

[0001] This application belongs to the technical field of rockets, and particularly relates to an integrated valve group and a rocket engine. Background Art

[0002] In the related art, it is necessary to purge the oxygen pipeline, methane pipeline, etc. of a liquid rocket engine at high or low pressure. Usually, a one-way valve is set between the pipeline to be purged and the purge gas cylinder. When purging the pipeline, the one-way valve is opened by air pressure to purge the pipeline. After the purging is completed, the one-way valve resets to keep the pipeline closed. However, the liquid rocket engine has a large number of pipelines and complex purging conditions, and it is necessary to set a large number of one-way valves and corresponding pipe fittings, joints, etc. to meet the purging requirements of the pipelines, resulting in problems such as heavy mass, complex pipeline structure, non-compact layout, and inconvenient assembly of the liquid rocket engine. Summary of the Invention

[0003] This application aims to at least solve to some extent the technical problems such as heavy mass, complex pipeline structure, non-compact layout, and inconvenient assembly caused by setting a large number of one-way valves and corresponding pipe fittings, joints, etc. in the liquid rocket engine in the related art. For this purpose, this application provides an integrated valve group and a rocket engine.

[0004] The technical solution of this application is as follows:

[0005] On the one hand, this application provides an integrated valve group applicable to a rocket engine. The integrated valve group includes:

[0006] A main body provided with more than one main path channel assembly and more than one sub-path channel assembly, where:

[0007] The main path channel assembly includes a first intake channel, a second intake channel, a first exhaust channel, a first valve cavity, and a second valve cavity. A plurality of the second intake channels, the first exhaust channels, the first valve cavities, and the second valve cavities are correspondingly provided. Each of the first exhaust channels is respectively communicated with the first intake channel through the corresponding first valve cavity, and moreover, each of the first exhaust channels is respectively communicated with the corresponding second intake channel through the corresponding second valve cavity;

[0008] The sub-path channel assembly includes a third intake channel, a second exhaust channel, and a third valve cavity. A plurality of the second exhaust channels and the third valve cavities are correspondingly provided. Each of the second exhaust channels is respectively communicated with the third intake channel through the corresponding third valve cavity;

[0009] A plurality of valve cores are respectively arranged in each of the first valve cavity, the second valve cavity and the third valve cavity so as to be axially movable. The valve core has opposite first and second ends. The air inlet ends of each of the first valve cavity, the second valve cavity and the third valve cavity can be sealed through the first ends of the corresponding valve cores.

[0010] A plurality of elastic members are respectively arranged in each of the first valve cavity, the second valve cavity and the third valve cavity. Moreover, the air exhaust ends of each of the first valve cavity, the second valve cavity and the third valve cavity are connected to the second ends of the corresponding valve cores through the corresponding elastic members.

[0011] In some embodiments, the main body includes a buckled air inlet valve body and an air exhaust valve body. Among them, the first air inlet channel, the second air inlet channel and the third air inlet channel are arranged on the air inlet valve body, the first air exhaust channel and the second air exhaust channel are arranged on the air exhaust valve body, and the first valve cavity, the second valve cavity and the third valve cavity are arranged on the air inlet valve body and / or the air exhaust valve body.

[0012] In some embodiments, the main body further includes a plurality of annular protrusions. The plurality of annular protrusions are arranged on the surface of the air inlet valve body opposite to the air exhaust valve body. The air exhaust ends of the first air inlet channel, the second air inlet channel and the third air inlet channel are all correspondingly provided with the annular protrusions.

[0013] On the surface of the air exhaust valve body opposite to the air inlet valve body, there are provided a plurality of buckling grooves. The air inlet ends of the first air exhaust channel and the second air exhaust channel are all correspondingly provided with the buckling grooves. The annular protrusions are inserted into the corresponding buckling grooves. The first valve cavity, the second valve cavity and the third valve cavity are formed by enclosing the inner cavities of the corresponding annular protrusions and the buckling grooves.

[0014] In some embodiments, the integrated valve group further includes a first annular seal. The first annular seal is arranged around the outside of the annular protrusion. The surfaces of the air inlet valve body and the air exhaust valve body opposite to each other are connected through the first annular seal.

[0015] In some embodiments, the integrated valve group further includes a second annular seal. The outer peripheral surface of the annular protrusion and the groove surface of the corresponding buckling groove are connected through the second annular seal.

[0016] In some embodiments, the air exhaust valve body includes more than one air exhaust valve sub - body. Each air exhaust valve sub - body is provided with at most one of the first air exhaust channel and / or one of the second air exhaust channels.

[0017] In some embodiments, an elastic member groove is provided at the second end of the valve core, and the elastic member is disposed in the elastic member groove;

[0018] There is a gap between the circumferential surface of the first end of the valve core and the cavity wall of the corresponding first valve cavity, second valve cavity or third valve cavity, and the circumferential surface of the second end of the valve core is sealingly connected to the cavity wall of the corresponding first valve cavity, second valve cavity or third valve cavity;

[0019] The valve core is provided with a throttle hole, and the throttle hole communicates the gap with the elastic member groove.

[0020] In some embodiments, the integrated valve group further includes a plastic seal, and the plastic seal is disposed on the end surface of the first end of the valve core.

[0021] In some embodiments, the valve core is provided with a fixing groove, and the plastic seal is disposed in the fixing groove;

[0022] The valve core is provided with an exhaust hole, and the exhaust hole communicates the groove surface of the fixing groove with the circumferential surface of the first end of the valve core.

[0023] On the other hand, the present application also proposes a rocket engine, including the above integrated valve group.

[0024] The embodiments of the present application at least have the following beneficial effects:

[0025] The present application proposes a rocket engine, including an integrated valve group. The integrated valve group integrates the valve parts used to control the opening and closing of pipelines in the rocket engine. The air inlet end of the integrated valve group is connected to the purging gas cylinder, and the exhaust end of the integrated valve group is connected to the corresponding pipeline.

[0026] Specifically, the integrated valve group is provided with a main path channel assembly and a sub-path channel assembly on the main body of the integrated valve group according to corresponding requirements. The main path channel assembly is used to correspondingly connect the oxygen main path, methane main path, etc., and the sub-path channel assembly is used to correspondingly connect the oxygen sub-path, methane sub-path, etc. Among them, the oxygen main path, methane main path, etc. need to be purged at low pressure and high pressure, while the oxygen sub-path, methane sub-path, etc. only need to be purged at high pressure.

[0027] Therefore, the main path channel assembly is provided with a first intake channel for connecting to a low-pressure purge gas cylinder, a second intake channel for connecting to a high-pressure purge gas cylinder, and a first exhaust channel for connecting to the oxygen main path, methane main path, etc. A first valve chamber is provided between the first intake channel and the first exhaust channel, and a second valve chamber is provided between the second intake channel and the first exhaust channel. The valve cores in the first valve chamber and the second valve chamber seal the intake ends of the first valve chamber and the second valve chamber under the action of elastic members. When it is necessary to perform low-pressure purging on the oxygen main path, methane main path, etc., the low-pressure purge gas cylinder connected to the first intake channel is opened, and the air pressure of the low-pressure gas pushes the valve core in the first valve chamber, so that the valve core no longer seals the intake end of the first valve chamber. At this time, the first intake channel and the first exhaust channel are in a connected state, thereby realizing the low-pressure purging of the oxygen main path, methane main path, etc. Since the second valve chamber is also in a connected state with the first exhaust channel, the low-pressure gas will also enter the second valve chamber, and the low-pressure gas acts on the second end of the valve core in the second valve chamber, increasing the sealing force of the valve core on the intake end of the second valve chamber and preventing the low-pressure gas from leaking into the second intake pipeline. The same applies vice versa.

[0028] Correspondingly, the secondary path channel assembly is provided with a third intake channel for connecting to a high-pressure purge gas cylinder and a second exhaust channel for connecting to the oxygen secondary path, methane secondary path, etc. A third valve chamber is provided between the third intake channel and the second exhaust channel, and the valve core in the third valve chamber seals the intake end of the third valve chamber under the action of an elastic member. When it is necessary to perform high-pressure purging on the oxygen secondary path, methane secondary path, etc., the high-pressure purge gas cylinder connected to the third intake channel is opened, and the air pressure of the high-pressure gas pushes the valve core in the third valve chamber, so that the valve core no longer seals the intake end of the third valve chamber. At this time, the third intake channel and the second exhaust channel are in a connected state, thereby realizing the high-pressure purging of the oxygen secondary path, methane secondary path, etc.

[0029] Furthermore, more than one main path channel assembly and secondary path channel assembly are provided in the embodiments of the present application, and the specific quantity needs to be set according to actual requirements. Each of the first intake channel, the second intake channel, and the third intake channel is respectively connected to an independent purge gas cylinder. Among them, the number of the second intake channels corresponds to the number of the first exhaust channels for directly performing high-pressure purging on the oxygen main path, methane main path, etc. connected to the second intake channels.

[0030] In summary, the rocket engine proposed in the present application adopts an integrated valve group, effectively reducing the number of check valves and corresponding pipe fittings, joints, etc., reducing the engine mass, optimizing the layout of the rocket engine, improving the assembly convenience, and enhancing the reliability of the rocket engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0032] Figure 1 Structural schematic diagram of the integrated valve group for the embodiment of the present application;

[0033] Figure 2 For Figure 1 A - A cross-sectional view of the integrated valve group of

[0034] Figure 3 For Figure 1 B - B cross-sectional view of the integrated valve group of

[0035] Figure 4 For Figure 1 C - C cross-sectional view of the integrated valve group of

[0036] Figure 5 For Figure 1 D - D cross-sectional view of the integrated valve group of

[0037] Figure 6 For Figure 1 Bottom view of the integrated valve group of

[0038] Reference numerals:

[0039] 100 - Main body;

[0040] 110 - Main path channel assembly; 111 - First intake channel; 112 - Second intake channel; 113 - First exhaust channel; 114 - First valve cavity; 115 - Second valve cavity;

[0041] 120 - Sub - path channel assembly; 121 - Third intake channel; 122 - Second exhaust channel; 123 - Third valve cavity;

[0042] 130 - Annular protrusion; 140 - Clamping groove; 150 - First annular groove; 160 - Second annular groove; 170 - Arc groove; 180 - Intake valve body; 190 - Exhaust valve body;

[0043] 200 - Valve core; 210 - Elastic part groove; 220 - Throttle hole; 230 - Fixed groove; 240 - Exhaust hole; 300 - Elastic part; 400 - First annular seal; 500 - Second annular seal; 600 - Clamping part; 700 - Pressing ring; 800 - Bolt; 900 - Plastic seal. Detailed implementation manners

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0045] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0046] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0047] Embodiment 1

[0048] Figures 1 to 6 is a schematic structural diagram of an integrated valve group according to an embodiment of the present application. In combination with Figures 2 to 5 , the integrated valve group includes a main body 100, a valve core 200, and an elastic member 300.

[0049] In the embodiment of the present application, the main body 100 is provided with more than one main path channel assembly 110 and more than one sub-path channel assembly 120. Among them, the main path channel assembly 110 includes a first intake channel 111, a second intake channel 112, a first exhaust channel 113, a first valve cavity 114, and a second valve cavity 115. A plurality of the second intake channels 112, the first exhaust channels 113, the first valve cavities 113, and the second valve cavities 114 are correspondingly provided. Each first exhaust channel 113 is respectively communicated with the first intake channel 111 through the corresponding first valve cavity 114, and each first exhaust channel 113 is respectively communicated with the corresponding second intake channel 112 through the corresponding second valve cavity 115. The sub-path channel assembly 120 includes a third intake channel 121, a second exhaust channel 122, and a third valve cavity 123. A plurality of the second exhaust channels 122 and the third valve cavities 123 are correspondingly provided. Each second exhaust channel 122 is respectively communicated with the third intake channel 121 through the corresponding third valve cavity 123. A plurality of valve cores 200 are respectively arranged in each of the first valve cavity 114, the second valve cavity 115, and the third valve cavity 123 in an axially movable manner. The valve core 200 has opposite first and second ends. The intake ends of each of the first valve cavity 114, the second valve cavity 115, and the third valve cavity 123 can be sealed by the first ends of the corresponding valve cores 200. A plurality of elastic members 300 are respectively arranged in each of the first valve cavity 114, the second valve cavity 115, and the third valve cavity 123, and the exhaust ends of each of the first valve cavity 114, the second valve cavity 115, and the third valve cavity 123 are connected to the second ends of the corresponding valve cores 200 through the corresponding elastic members 300.

[0050] The integrated valve group proposed in the embodiment of the present application integrates the valve parts used to control the opening and closing of pipelines in a rocket engine. The intake end of the integrated valve group is connected to a purging gas cylinder, and the exhaust end of the integrated valve group is connected to the corresponding pipeline.

[0051] Specifically, according to corresponding requirements, the main body 100 of the integrated valve group is provided with a main path channel assembly 110 and a sub-path channel assembly 120. The main path channel assembly 110 is used to correspondingly connect the main oxygen path, the main methane path, etc. The sub-path channel assembly 120 is used to correspondingly connect the sub-oxygen path, the sub-methane path, etc. Among them, the main oxygen path, the main methane path, etc. need to be purged at low pressure and high pressure, while the sub-oxygen path, the sub-methane path, etc. only need to be purged at high pressure.

[0052] Therefore, the main path channel assembly 110 is provided with a first intake channel 111 for connecting to a low-pressure purge gas cylinder, a second intake channel 112 for connecting to a high-pressure purge gas cylinder, and a first exhaust channel 113 for connecting to an oxygen main path, a methane main path, etc. A first valve cavity 114 is provided between the first intake channel 111 and the first exhaust channel 113, and a second valve cavity 115 is provided between the second intake channel 112 and the first exhaust channel 113. The valve core 200 in the first valve cavity 114 and the second valve cavity 115 seals the intake ends of the first valve cavity 114 and the second valve cavity 115 under the action of the elastic member 300. When it is necessary to perform low-pressure purging on the oxygen main path, the methane main path, etc., the low-pressure purge gas cylinder connected to the first intake channel 111 is opened, and the air pressure of the low-pressure gas pushes the valve core 200 in the first valve cavity 114, so that the valve core 200 no longer seals the intake end of the first valve cavity 114. At this time, the first intake channel 111 and the first exhaust channel 113 are in a connected state, thereby realizing the low-pressure purging of the oxygen main path, the methane main path, etc. Since the second valve cavity 115 is also in a connected state with the first exhaust channel 113, the low-pressure gas will also enter the second valve cavity 115. The low-pressure gas acts on the second end of the valve core 200 in the second valve cavity 115, increasing the sealing force of the valve core 200 acting on the intake end of the second valve cavity 115 and preventing the low-pressure gas from leaking into the second intake pipeline. Vice versa.

[0053] Correspondingly, the secondary path channel assembly 120 is provided with a third intake channel 121 for connecting to a high-pressure purge gas cylinder and a second exhaust channel 122 for connecting to an oxygen secondary path, a methane secondary path, etc. A third valve cavity 123 is provided between the third intake channel 121 and the second exhaust channel 122. The valve core 200 in the third valve cavity 123 seals the intake end of the third valve cavity 123 under the action of the elastic member 300. When it is necessary to perform high-pressure purging on the oxygen secondary path, the methane secondary path, etc., the high-pressure purge gas cylinder connected to the third intake channel 121 is opened, and the air pressure of the high-pressure gas pushes the valve core 200 in the third valve cavity 123, so that the valve core 200 no longer seals the intake end in the third valve cavity 123. At this time, the third intake channel 121 and the second exhaust channel 122 are in a connected state, thereby realizing the high-pressure purging of the oxygen secondary path, the methane secondary path, etc.

[0054] Furthermore, more than one main path channel assembly 110 and secondary path channel assembly 120 are provided in the embodiments of the present application, and the specific quantity needs to be set according to actual requirements. Each of the first intake channel 111, the second intake channel 112, and the third intake channel 121 is respectively connected to an independent purge gas cylinder. Among them, the number of the second intake channels 112 corresponds to the number of the first exhaust channels 113 for directly high-pressure purging of the oxygen main path, the methane main path, etc. connected to the second intake channels 112.

[0055] In some embodiments, such asFigures 2 to 5 As shown, the main body 100 includes a snap-fitted intake valve body 180 and an exhaust valve body 190. Among them, a first intake passage 111, a second intake passage 112, and a third intake passage 121 are provided on the intake valve body 180, a first exhaust passage 113 and a second exhaust passage 122 are provided on the exhaust valve body 190, and a first valve cavity 114, a second valve cavity 115, and a third valve cavity 123 are provided on the intake valve body 180 and / or the exhaust valve body 190. The main body 100 is set as a split structure, which is convenient for machining intake passages, exhaust passages, and valve cavities on the main body 100, especially for installing the valve core 200 and the elastic member 300 into the valve cavity. The valve cavity is provided on the opposite surfaces of the intake valve body 180 and / or the exhaust valve body 190, so as to realize the connection between the intake passage and the exhaust passage after the intake valve body 180 and the exhaust valve body 190 are snap-fitted. The valve cavity can be separately provided on the intake valve body 180 or the exhaust valve body 190, or one end of the valve cavity can be provided on the intake valve body 180 and the other end of the valve cavity can be provided on the exhaust valve body 190. When the intake valve body 180 and the exhaust valve body 190 are snap-fitted, the valve cavity is connected into a whole.

[0056] In some embodiments, as Figures 2 to 5 shown, the main body 100 further includes a plurality of annular protrusions 130. The plurality of annular protrusions 130 are provided on the surface of the intake valve body 180 opposite to the exhaust valve body 190. The exhaust ends of the first intake passage 111, the second intake passage 112, and the third intake passage 121 are all correspondingly provided with annular protrusions 130. A plurality of snap-fitting grooves 140 are provided on the surface of the exhaust valve body 190 opposite to the intake valve body 180. The intake ends of the first exhaust passage 113 and the second exhaust passage 122 are all correspondingly provided with snap-fitting grooves 140. The annular protrusions 130 are inserted into the corresponding snap-fitting grooves 140. The first valve cavity 114, the second valve cavity 115, and the third valve cavity 123 are surrounded by the inner cavities of the corresponding annular protrusions 130 and the snap-fitting grooves 140. By inserting the annular protrusions 130 on the intake valve body 180 into the snap-fitting grooves 140 on the exhaust valve body 190, the snap-fitting connection between the intake valve body 180 and the exhaust valve body 190 is realized. At the same time, the valve cavity is also formed by surrounding the inner cavity of the annular protrusion 130 and the snap-fitting groove 140. It should be noted that the connection between the annular protrusion 130 on the intake valve body 180 and the snap-fitting groove 140 on the exhaust valve body 190 mainly plays a positioning role. In order to stably connect the intake valve body 180 and the exhaust valve body 190, a bolt 800 also needs to be inserted between the intake valve body 180 and the exhaust valve body 190, and the intake valve body 180 and the exhaust valve body 190 are stably connected through the bolt 800.

[0057] In some embodiments, as Figures 2 to 5As shown, the integrated valve group further includes a first annular seal 400. The first annular seal 400 is disposed around the outside of the annular protrusion 130. The opposite surfaces of the intake valve body 180 and the exhaust valve body 190 are connected by the first annular seal 400. A first annular groove 150 is formed on the surface of the exhaust valve body 190 opposite to the intake valve body 180. The first annular groove 150 is disposed around the outside of the annular protrusion 130. The first annular seal 400 is arranged in the first annular groove 150. After the intake valve body 180 and the exhaust valve body 190 are snap-connected, the airtightness of the connection between the intake passage, the valve cavity, and the exhaust passage is ensured, preventing air leakage in the integrated valve group and affecting the use effect.

[0058] In some embodiments, as Figures 2 to 5 shown, the integrated valve group further includes a second annular seal 500. The outer peripheral surface of the annular protrusion 130 and the groove surface of the corresponding snap groove 140 are connected by the second annular seal 500. A second annular groove 160 is formed on the outer peripheral surface of the annular protrusion 130. The second annular seal 500 is arranged in the second annular groove 160. After the intake valve body 180 and the exhaust valve body 190 are snap-connected, the airtightness of the connection between the intake passage, the valve cavity, and the exhaust passage is further ensured. The airtightness of the integrated valve group is ensured by the first annular seal 400 and the second annular seal 500.

[0059] In some embodiments, the materials of the first annular seal 400 and the second annular seal 500 are rubbers with a sealing compression rate greater than 25% and a swelling rate greater than 15%.

[0060] In the embodiments of the present application, as Figures 2 to 5 shown, the integrated valve group is provided with a main passage component 110 and a sub-passage component 120. Among them, the main passage component 110 is provided with a first intake passage 111, two second intake passages 112, two first exhaust passages 113, two first valve cavities 114, and two second valve cavities 115. The first intake passage 111 communicates with two second exhaust passages 122 through two first valve cavities 114. The two first exhaust passages 113 communicate with two second exhaust passages 122 through two second valve cavities 115. Correspondingly, the sub-passage component 120 is provided with a third intake passage 121, two second exhaust passages 122, and two third valve cavities 123. A third intake passage 121 communicates with two second exhaust passages 122 through two third valve cavities 123. To ensure the purging effect, the cross-sectional area of the first intake passage 111 should be set to be larger than the cross-sectional area of the first exhaust passage 113, and the cross-sectional area of the first exhaust passage 113 should be larger than the cross-sectional area of the transition passage connecting the first valve cavity 114 and the first exhaust passage 113. The cross-sectional area of the third intake passage 121 is larger than the cross-sectional area of the second exhaust passage 122.

[0061] In some embodiments, the integrated valve group is provided with more than one exhaust valve body 190, and at most one first exhaust passage 113 and / or one second exhaust passage 122 are provided in one of the more than one exhaust valve bodies 190. As Figures 2 to 4 shown, according to the structural characteristics of the integrated valve group in the embodiments of the present application, it is necessary to provide two exhaust valve bodies 190, and one first exhaust passage 113 and one second exhaust passage 122 are provided on each exhaust valve body 190.

[0062] In some embodiments, as Figures 2 to 4 shown, an arc-shaped groove 170 is formed on the main body 100. As Figure 1 , Figure 5 and Figure 6 shown, clamp members 600 are respectively arranged at both axial ends of the arc-shaped groove 170, so that the main body 100 is arranged on the pipeline of the rocket engine through the arc-shaped groove 170, and then the main body 100 is fixed on the roller path of the rocket engine through the clamp members 600, so as to reduce the installation space of the integrated valve group. In the embodiments of the present application, the arc-shaped groove 170 is formed on the surface of the intake valve body 180 opposite to the exhaust valve body 190, and the two exhaust valve bodies 190 are arranged on both sides of the axial direction of the arc-shaped groove 170, so as to realize the fixation of the integrated valve group on the rocket engine while ensuring the functional effect of the integrated valve group. In addition, the circle of the arc-shaped groove 170 is located outside the arc-shaped groove 170 to ensure the installation stability.

[0063] In some embodiments, as Figures 2 to 5 shown, an elastic member groove 210 is provided at the second end of the valve core 200, the elastic member 300 is arranged in the elastic member groove 210, there is a gap between the circumferential surface of the first end of the valve core 200 and the cavity walls of the corresponding first valve cavity 114, second valve cavity 115 or third valve cavity 123, the circumferential surface of the second end of the valve core 200 is sealingly connected to the cavity walls of the corresponding first valve cavity 114, second valve cavity 115 or third valve cavity 123, and the valve core 200 is provided with a throttle hole 220, and the throttle hole 220 communicates the gap between the circumferential surface of the first end of the valve core 200 and the cavity walls of the corresponding first valve cavity 114, second valve cavity 115 or third valve cavity 123 with the elastic member groove 210. When the air pressure pushes the valve core 200 so that the valve core 200 no longer seals the intake end of the valve cavity, the gas enters the valve cavity from the intake end of the valve cavity, then enters the elastic member groove 210 through the throttle hole 220, and finally enters the exhaust end of the valve cavity through the elastic member groove 210, so as to realize the communication between the intake passage and the exhaust passage. By adjusting the size of the throttle hole 220, the blowing pressure of the overall integrated valve group can be adjusted.

[0064] In some embodiments, the valve core 200 is rectangular to facilitate the setting of the throttle holes 220. Throttle holes 220 are provided on all four circumferential faces of the valve core 200.

[0065] In some embodiments, such as Figures 2 to 5 shown, the integrated valve group further includes a plastic seal 900. The plastic seal 900 is disposed on the end face of the first end of the valve core 200 to seal the air inlet end of the valve cavity through the plastic seal 900.

[0066] In some embodiments, such as Figures 2 to 5 shown, the valve core 200 is provided with a fixing groove 230. The plastic seal 900 is disposed in the fixing groove 230. The valve core 200 is provided with an exhaust hole 240. The exhaust hole 240 communicates the groove surface of the fixing groove 230 with the circumferential surface of the first end of the valve core 200 to exhaust gas when the plastic seal 900 is disposed in the fixing groove 230, preventing air leakage in the valve core 200.

[0067] In some embodiments, such as Figures 2 to 5 shown, the integrated valve group further includes a retaining ring 700. The plastic seal 900 is integrally stepped. When the plastic seal 900 is disposed in the fixing groove 230, the retaining ring 700 is pressed on the surface of the lower end of the plastic seal 900 to fixedly connect the retaining ring 700 with the valve core 200. Ways such as screwing or welding can be adopted, and the embodiments of the present application do not limit this.

[0068] In some embodiments, the elastic member 300 can be an elastic structural member such as a spring or rubber, and the embodiments of the present application do not limit this. Such as Figures 2 to 5 shown, the elastic member 300 in the embodiments of the present application is a spring.

[0069] Embodiment 2

[0070] The embodiments of the present application further propose a rocket engine, which includes the above integrated valve group.

[0071] In some embodiments, the rocket engine includes three high-pressure purge gas cylinders, one low-pressure purge gas cylinder, one oxygen main path, one methane main path, one oxygen sub-path, one methane sub-path, and an integrated valve group (which is provided with a main path channel assembly 110 and a sub-path channel assembly 120. Among them, the main path channel assembly 110 is provided with a first intake channel 111, two second intake channels 112, two first exhaust channels 113, two first valve cavities 114, and two second valve cavities 115. The sub-path channel assembly 120 is provided with a third intake channel 121, two second exhaust channels 122, and two third valve cavities 123). Among them, the first intake channel 111 is communicated with the low-pressure purge gas cylinder, the third intake channel 121 and the two second intake channels 112 are respectively communicated with the three high-pressure purge gas cylinders, the two first exhaust channels 113 are respectively communicated with the oxygen main path and the methane main path, and the two second exhaust channels 122 are respectively communicated with the oxygen sub-path and the methane sub-path.

[0072] In summary, the rocket engine proposed in the embodiments of the present application adopts an integrated valve group, effectively reducing the number of check valves and corresponding pipe fittings, joints, etc., reducing the engine mass, optimizing the layout of the rocket engine, improving the assembly convenience, and enhancing the reliability of the rocket engine.

[0073] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0074] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0075] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0076] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0077] In addition, in the present application, the descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0079] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0080] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An integrated valve group, applicable to a rocket engine, characterized in that, Comprising: A main body, provided with more than one main path channel component and more than one secondary path channel component, wherein: The main path channel component includes a first intake channel, a second intake channel, a first exhaust channel, a first valve cavity, and a second valve cavity. A plurality of the second intake channels, the first exhaust channels, the first valve cavities, and the second valve cavities are correspondingly provided. Each of the first exhaust channels is respectively communicated with the first intake channel through the corresponding first valve cavity, and moreover, each of the first exhaust channels is respectively communicated with the corresponding second intake channel through the corresponding second valve cavity; The secondary path channel component includes a third intake channel, a second exhaust channel, and a third valve cavity. A plurality of the second exhaust channels and the third valve cavities are correspondingly provided. Each of the second exhaust channels is respectively communicated with the third intake channel through the corresponding third valve cavity; A plurality of valve cores, respectively arranged axially movably in each of the first valve cavity, the second valve cavity, and the third valve cavity. The valve core has opposite first and second ends. The intake ends of each of the first valve cavity, the second valve cavity, and the third valve cavity can be sealed by the first ends of the corresponding valve cores; A plurality of elastic members, respectively arranged in each of the first valve cavity, the second valve cavity, and the third valve cavity. Moreover, between the exhaust ends of each of the first valve cavity, the second valve cavity, and the third valve cavity and the second ends of the corresponding valve cores are connected through the corresponding elastic members.

2. The integrated valve block according to claim 1, characterized in that The main body includes a buckled intake valve body and exhaust valve body. Among them, the first intake channel, the second intake channel, and the third intake channel are arranged on the intake valve body, the first exhaust channel and the second exhaust channel are arranged on the exhaust valve body, and the first valve cavity, the second valve cavity, and the third valve cavity are arranged on the intake valve body and / or the exhaust valve body.

3. The integrated valve block according to claim 2, wherein The main body further includes a plurality of annular protrusions. The plurality of annular protrusions are arranged on the surface of the intake valve body opposite to the exhaust valve body. The exhaust ends of the first intake channel, the second intake channel, and the third intake channel are correspondingly provided with the annular protrusions; On the surface of the exhaust valve body opposite to the intake valve body, there are provided a plurality of buckling grooves. The intake ends of the first exhaust channel and the second exhaust channel are correspondingly provided with the buckling grooves. The annular protrusions are inserted into the corresponding buckling grooves. The first valve cavity, the second valve cavity, and the third valve cavity are formed by enclosing the inner cavities of the corresponding annular protrusions and the buckling grooves.

4. The integrated valve block according to claim 3, wherein, The integrated valve group further includes a first annular seal. The first annular seal is arranged around the outside of the annular protrusion. The surfaces of the intake valve body and the exhaust valve body opposite to each other are connected through the first annular seal.

5. The integrated valve block according to claim 4, wherein, The integrated valve group further includes a second annular seal. The outer peripheral surface of the annular protrusion and the groove surface of the corresponding buckling groove are connected through the second annular seal.

6. The integrated valve block according to claim 5, characterized in that, The exhaust valve body includes more than one exhaust valve sub-body, and at most one of the first exhaust channels and / or one of the second exhaust channels is provided in the exhaust valve sub-body.

7. The integrated valve block according to any one of claims 1-6, characterized in that, An elastic member groove is provided at the second end of the valve core, and the elastic member is arranged in the elastic member groove; A clearance exists between the circumferential surface of the first end of the valve core and the cavity wall of the corresponding first valve cavity, second valve cavity or third valve cavity, and the circumferential surface of the second end of the valve core is in sealed connection with the cavity wall of the corresponding first valve cavity, second valve cavity or third valve cavity; The valve core is provided with a throttle hole, and the throttle hole communicates the clearance with the elastic member groove.

8. The integrated valve block according to any one of claims 1-6, characterized in that The integrated valve group further includes a plastic seal, and the plastic seal is arranged on the end surface of the first end of the valve core.

9. The integrated valve group according to claim 8, characterized in that, The valve core is provided with a fixing groove, and the plastic seal is arranged in the fixing groove; The valve core is provided with an exhaust hole, and the exhaust hole communicates the groove surface of the fixing groove with the circumferential surface of the first end of the valve core.

10. A rocket engine, characterized in that, Comprising the integrated valve group according to any one of claims 1-9.

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