Recyclable rocket interstage separation guiding air injection push rod
By designing a recyclable rocket interstage separation guide jet pushrod, the gas exhaust and guidance functions are achieved using guide pins and inflation devices, the problems of gas retention and unstable attitude of the sub-stage after interstage separation are solved, and the safety and reuse efficiency of the recycling sub-stage are improved.
Patent Information
- Application Number
- CN202411885170.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-03-14
AI Technical Summary
The aerodynamic pushrods in the existing rocket interstage separation cannot effectively discharge gas in the system after work, resulting in the safety and reuse of the recovery sub-stage being threatened. At the same time, the sub-stage's posture is unstable after separation, requiring additional guiding mechanisms to gain weight.
A recyclable rocket interstage separation guide jet pushrod is designed, including a base, an outer cylinder, a guide pin and an inflatable device. The guide pin is inserted into the interior along the outer cylinder axis and has an internal ventilation channel and a vent hole. The inflator exhausts into the ventilation channel and sprays into the cavity from the vent hole to realize the gas exhaust and guidance functions.
The gas inside the push rod and the inflation system is quickly emptied through the exhaust pipe, which can obtain additional kinetic energy to speed up the separation speed, and the child posture is stabilized through the self-propelled guide pin to ensure the safety and reuse of the recovery child.
Smart Images
Figure CN119617988A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pneumatic push rods, and in particular to a recyclable rocket inter-stage separation guide jet push rod. Background Art
[0002] The pneumatic push rod is an important device in the separation of rocket stages. The device is located on both sides of the rocket separation surface. Before separation, compressed gas is filled into the pneumatic push rod. During separation, the rocket separation surface is unlocked and separated. Under the action of compressed gas, the pneumatic push rod is quickly pushed out, so that the sub-stages on both sides of the separation surface instantly gain a certain amount of kinetic energy, achieving the purpose of rapid separation.
[0003] After the push rod is pushed out, there is air pressure inside the push rod and the inflation system. The push rod is installed on the sub-stage of the recyclable rocket, and excessive gas pressure poses a major risk to the success of the recovery.
[0004] The gas remains inside the push rod and the inflation system, causing certain waste.
[0005] In order to ensure the posture of the two sub-stages after separation and not touch other parts of the rocket, it may be necessary to add additional guiding mechanisms inside the rocket, increasing the structural weight.
[0006] Therefore, the technical problem that needs to be solved urgently is: how to provide a recyclable rocket inter-stage separation guide jet push rod so that the gas in the system can be discharged after the push rod works, ensuring the safety and reuse of the recovered sub-stage. The pneumatic push rod has its own guide to ensure the stability of the two sub-stages after separation. Summary of the invention
[0007] The purpose of this application is to provide a recyclable rocket inter-stage separation guide jet push rod, which allows the gas in the system to be discharged after the push rod works, ensuring the safety and reuse of the recovered sub-stage. The pneumatic push rod has its own guide to ensure the stability of the two sub-stages after separation.
[0008] To achieve the above-mentioned purpose, the present application provides a recoverable rocket inter-stage separation guide jet push rod, comprising: a base, an outer tube, a guide pin and an inflation device; the outer tube is fixedly connected to the base; a side of the outer tube away from the base is a separation surface, and both sides of the separation surface are the first sub-stage and the second sub-stage; the guide pin is inserted into the interior of the outer tube and the base along the axial direction of the outer tube, and a cavity is provided between the guide pin and the outer tube and the base; the guide pin has an internal ventilation channel, and the end of the guide pin has an injection hole connected to the cavity; the inflation device is connected to the end of the guide pin away from the outer tube, the inflation device is connected to the ventilation channel of the guide pin, the gas discharged from the inflation device enters the ventilation channel, and is sprayed into the cavity from the injection hole, so that the sub-stages on both sides of the separation surface obtain additional kinetic energy, thereby accelerating the separation speed of the two sub-stages.
[0009] As described above, the recoverable rocket inter-stage separation guide jet push rod, wherein a retaining ring is arranged in the base, the retaining ring is blocked at the end of the guide pin, and the retaining ring is used to limit the extreme position of the guide pin inserted into the base.
[0010] As described above, the recoverable rocket inter-stage separation guide jet push rod, wherein a dynamic sealing ring is provided at the connection between the guide pin and the outer tube.
[0011] As described above, the recyclable rocket inter-stage separation guide jet push rod, wherein a static sealing ring is provided at the connection between the outer tube and the base.
[0012] The recoverable rocket interstage separation guide jet push rod as described above, wherein the guide pin is connected to the inflation device via a threaded device;
[0013] One end of the threaded device is connected to the guide pin through a locking nut, and the other end is connected to the inflation device through a thrust bracket.
[0014] As described above, the recyclable rocket inter-stage separation guide jet push rod, wherein the threaded device has a vent hole inside and a thread outside.
[0015] The recyclable rocket inter-stage separation guide jet push rod as described above, wherein the gas discharged by the inflation device is nitrogen, helium or compressed air.
[0016] As described above, the recyclable rocket inter-stage separation guide jet push rod, wherein, after the gas in the guide pin is sprayed into the cavity from the jet hole, the guide pin moves from the inside of the outer tube to the outside along the axial direction of the outer tube until the guide pin is separated from the outer tube.
[0017] The recoverable rocket inter-stage separation guide jet push rod as described above, wherein the outer tube is cylindrical; the guide pin is cylindrical; the diameter of the guide pin is smaller than the diameter of the outer tube.
[0018] The recoverable rocket inter-stage separation guide jet push rod as described above, wherein the retaining ring is in the shape of a circular ring.
[0019] The beneficial effects achieved by this application are as follows:
[0020] (1) After the pneumatic push rod of the present application works, the exhaust pipe at the end of the push rod quickly empties the gas inside the push rod and the inflation system. The reaction force of the gas exhaust enables the sub-stages on both sides of the separation surface to obtain additional kinetic energy, thereby accelerating the separation speed of the two sub-stages of the rocket. At the same time, after the gas in the jet push rod is emptied, it is convenient to collect and reuse the recoverable rocket.
[0021] (2) The guide pin of the present application is inserted into the outer tube, and the outer tube is used for guidance to ensure that the postures of the two sub-stages are stable after the two sub-stages are separated from the separation surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For those skilled in the art, other drawings can also be obtained based on these drawings.
[0023] Figure 1 This is a recoverable rocket inter-stage separation guide jet push rod according to an embodiment of the present application.
[0024] Figure 2 This is a schematic diagram of the separation state of the inter-stage separation guide jet push rod of a recoverable rocket in an embodiment of the present application.
[0025] Figure numerals: 1-base; 2-dynamic sealing ring; 3-outer cylinder; 4-static sealing ring; 5-retaining ring; 6-guide pin; 7-thrust bracket; 8-locking nut; 9-threaded device; 10-inflating device; 11-separation surface; 61-injection hole. DETAILED DESCRIPTION
[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0027] like Figure 1 and 2As shown, the present application provides a recyclable rocket inter-stage separation guide jet push rod, including: a base 1, an outer tube 3, a guide pin 6 and an inflation device 10; the outer tube 3 is fixedly connected to the base 1; the side of the outer tube 3 away from the base 1 is a separation surface 11, and the two sides of the separation surface 11 are the first sub-stage and the second sub-stage; the guide pin 6 is inserted into the outer tube 3 and the base 1 along the axial direction of the outer tube 3, and a cavity is provided between the guide pin 6 and the outer tube 3 and the base 1; the guide pin 6 has an internal ventilation channel, and the end of the guide pin 6 has a jet hole 61 connected to the cavity; the jet hole 61 is used to provide reverse thrust for the exhaust after the pneumatic push rod is separated. The guide pin 6 moves along the inside of the outer tube 3, and the outer tube 3 guides the guide pin 6. The inflation device 10 is connected to the end of the guide pin 6 away from the outer tube 3. The inflation device 10 is connected to the ventilation channel of the guide pin 6. The gas discharged from the inflation device 10 enters the ventilation channel and is sprayed into the cavity from the jet hole 61, so that the sub-stages on both sides of the separation surface 11 obtain additional kinetic energy, thereby accelerating the separation speed of the two sub-stages.
[0028] The pneumatic push rod for separating the stages of the recoverable rocket of the present application has an exhaust duct. After work, the exhaust duct is quickly discharged from the jet hole 61 on the guide pin 6 to discharge the gas of the inflation system. This part of the gas (the discharged gas) is used to do secondary work on the reaction force of the air, thereby increasing the kinetic energy of the two sub-stages of the rocket. In addition, the sub-stage that exhausts the gas is more convenient for the collection and reuse of the recoverable rocket.
[0029] As a specific embodiment of the present invention, the interior of the base 1 is a hollow structure. After the guide pin 6 is inserted into the interior of the base 1, a cavity that can accommodate gas is formed between the end of the guide pin 6 and the inner wall of the base 1. When the gas is ejected from the jet hole 61 of the guide pin 6, the guide pin 6 moves in a direction away from the retaining ring 5 and separates from the retaining ring 5. The gas in the guide pin 6 continues to be ejected from the jet hole 61 and enters the cavity that can accommodate gas between the guide pin 6 and the inner wall of the base 1. When the gas in the cavity increases, it provides power for the guide pin 6 to move away from the retaining ring 5, thereby accelerating the moving speed of the guide pin 6 in the direction away from the retaining ring 5. The base 1 mainly provides compressed gas for the pneumatic push rod and increases the inflation volume.
[0030] As a specific embodiment of the present invention, one end of the guide pin 6 is located at one side of the first sub-stage, and the other end is located at one side of the second sub-stage. The interior of the guide pin 6 is a cavity structure, which is convenient for gas circulation.
[0031] As a specific embodiment of the present invention, when assembling the rocket, it is necessary to insert the guide pin 6 on the first sub-stage side of the rocket into the outer tube 3 on the second sub-stage side of the rocket; adjust the guide pin 6 and the locking nut 8 so that the guide pin 6 fits tightly against the inner wall of the outer tube 3.
[0032] As a specific embodiment of the present invention, the outer cylinder 3 and the base 1 are fixedly connected by threads, thereby improving the stability and reliability of the connection between the outer cylinder 3 and the base 1.
[0033] like Figure 1 and 2 As shown, a retaining ring 5 is provided in the base 1, and the retaining ring 5 is fixedly connected in the base 1. The retaining ring 5 is blocked at the end of the guide pin 6, and the retaining ring 5 has a limiting effect on the guide pin 6, and is used to limit the limit position of the guide pin 6 inserted into the base 1. Preferably, the retaining ring 5 is annular.
[0034] like Figure 1 and 2 As shown, a dynamic seal ring 2 is provided at the connection between the guide pin 6 and the outer tube 3. The dynamic seal ring 2 is connected to the relative moving surface between the guide pin 6 and the outer tube 3, and realizes a sealed connection between the outer wall of the guide pin 6 and the inner wall of the outer tube 3, thereby preventing gas from leaking from the connection between the guide pin 6 and the outer tube 3. When the guide pin 6 and the outer tube 3 move relative to each other, gas will not leak from the connection between the guide pin 6 and the outer tube 3.
[0035] As a specific embodiment of the present invention, the dynamic sealing ring 2 adopts an existing rubber sealing ring.
[0036] like Figure 1 and 2 As shown, a static sealing ring 4 is provided at the connection between the outer tube 3 and the base 1. The static sealing ring 4 is installed inside the butt joint surface of the base 1 and the outer tube 3. The static sealing ring 4 is reliably installed to achieve a sealed connection between the base 1 and the outer tube 3, and prevent gas leakage from the connection between the base 1 and the outer tube 3.
[0037] As a specific embodiment of the present invention, the static sealing ring 4 adopts an existing rubber sealing ring.
[0038] like Figure 1 and 2 As shown, the guide pin 6 is connected to the inflation device 10 through a threaded device 9; one end of the threaded device 9 is connected to the guide pin 6 through a locking nut 8, and the other end is connected to the inflation device 10 through a thrust bracket 7.
[0039] As a specific embodiment of the present invention, the thrust bracket 7 has a positioning function, which provides a positioning function for the axial position of the guide pin 6 .
[0040] As a specific embodiment of the present invention, the threaded device 9 has a vent hole inside and a thread outside. The threaded device 9 serves to connect the components on both sides, tightly fixing the components on both sides of the threaded device 9 together for easy disassembly and installation. At the same time, the vent hole inside the threaded device 9 allows gas to pass through, and the gas can enter the ventilation channel inside the guide pin 6 through the vent hole of the threaded device 9 without affecting the circulation of the gas.
[0041] As a specific embodiment of the present invention, the gas discharged by the inflating device 10 is nitrogen, helium or compressed air. The function of the inflating device 10 is to fill the guide pin 6 with a certain pressure. When the gas filled into the guide pin 6 by the inflating device 10 reaches a certain pressure, the guide pin 6 is separated from the outer tube 3. Among them, the guide pin 6 is connected to the first sub-stage, and the outer tube 3 is connected to the second sub-stage. When the guide pin 6 is separated from the outer tube 3, the first sub-stage and the second sub-stage are separated.
[0042] As a specific embodiment of the present invention, after the gas in the guide pin 6 is sprayed into the cavity from the spray hole 61 , the guide pin 6 moves from the inside of the outer tube 3 to the outside along the axial direction of the outer tube 3 until the guide pin 6 is separated from the outer tube 3 .
[0043] As a specific embodiment of the present invention, the outer cylinder 3 is cylindrical; the guide pin 6 is cylindrical; the diameter of the guide pin 6 is smaller than the diameter of the outer cylinder 3, so that the guide pin 6 can be inserted into the interior of the outer cylinder 3 and can move in the outer cylinder 3 along its axial direction.
[0044] As a preferred embodiment of the present invention, the axis of the guide pin 6 and the axis of the outer cylinder 3 are in the same straight line direction.
[0045] As other specific embodiments of the present invention, the recyclable rocket inter-stage separation pneumatic push rod can also be used in other locations of the rocket where separation is required, such as fairing separation.
[0046] The beneficial effects achieved by this application are as follows:
[0047] (1) After the pneumatic push rod of the present application works, the exhaust pipe at the end of the push rod quickly empties the gas inside the push rod and the inflation system. The reaction force of the gas exhaust enables the sub-stages on both sides of the separation surface 11 to obtain additional kinetic energy, thereby accelerating the separation speed of the two sub-stages of the rocket. At the same time, after the gas in the jet push rod is emptied, it is convenient to collect and reuse the recoverable rocket.
[0048] (2) The guide pin of the present application is inserted into the outer tube, and the outer tube is used for guidance to ensure that the postures of the two sub-stages are stable after the two sub-stages are separated from the separation surface 11.
[0049] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.
[0050] In the description of the present application, the word "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.
[0051] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A recyclable rocket interstage separation guide jet push rod, characterized in that: include: Base, outer cylinder, guide pins and inflation device; The outer cylinder is fixedly connected to the base; A side of the outer cylinder away from the base is a separation surface, and two sides of the separation surface are the first sub-stage and the second sub-stage; The guide pin is inserted into the outer tube and the base along the axial direction of the outer tube, and a cavity is provided between the guide pin, the outer tube and the base; The guide pin has an internal ventilation channel, and the end of the guide pin has an air injection hole communicating with the cavity; The inflation device is connected to the end of the guide pin away from the outer cylinder, and the inflation device is communicated with the ventilation channel of the guide pin. The gas discharged from the inflation device enters the ventilation channel and is sprayed into the cavity from the jet hole, so that the sub-stages on both sides of the separation surface obtain additional kinetic energy, thereby accelerating the separation speed of the two sub-stages.
2. The recyclable rocket interstage separation guide jet push rod according to claim 1, characterized in that: A retaining ring is arranged in the base, and the retaining ring is retained at the end of the guide pin. The retaining ring is used to limit the extreme position of the guide pin inserted into the base.
3. The recyclable rocket interstage separation guide jet push rod according to claim 1, characterized in that: A dynamic sealing ring is provided at the connection between the guide pin and the outer cylinder.
4. The recyclable rocket interstage separation guide jet push rod according to claim 1, characterized in that: A static sealing ring is provided at the connection between the outer cylinder and the base.
5. The recoverable rocket interstage separation guide jet push rod according to claim 1, characterized in that: The guide pin is connected to the inflation device via a threaded device; One end of the threaded device is connected to the guide pin through a locking nut, and the other end is connected to the inflation device through a thrust bracket.
6. The recyclable rocket interstage separation guide jet push rod according to claim 5, characterized in that: The threaded device has a vent hole inside and threads outside.
7. The recyclable rocket interstage separation guide jet push rod according to claim 1, characterized in that: The gas discharged from the inflation device is nitrogen, helium or compressed air.
8. The recoverable rocket interstage separation guide jet push rod according to claim 1, characterized in that: After the gas in the guide pin is sprayed into the cavity from the spray hole, the guide pin moves from the inside of the outer tube to the outside along the axial direction of the outer tube until the guide pin is separated from the outer tube.
9. The recoverable rocket interstage separation guide jet push rod according to claim 8, characterized in that: The outer cylinder is cylindrical; The guide pin is cylindrical; The diameter of the guide pin is smaller than the diameter of the outer cylinder.
10. The recoverable rocket interstage separation guide jet push rod according to claim 2, characterized in that: The retaining ring is in the shape of a circular ring.