Safety valve for spherical surface contact type rail attitude control power system

Abstract

The invention relates to the field of rocket attitude control, in particular to a safety valve for a spherical surface contact type orbit attitude control power system. The safety valve comprises a valve body (6), a valve element (5) is arranged in the valve body (6), the valve element (5) can be extruded by a spring (4) to abut against a valve seat (7), the other side of the spring (4) is arranged on a spring seat (3), an air inlet channel is formed in the middle of the valve seat (7), and the safety valve is characterized in that the air inlet channel makes contact with the inner wall of an arc-shaped contact hole (10) outside the valve seat (7) so that sealing can be achieved; and meanwhile, a guide air outlet (11) is formed in the periphery of the valve body (6). On the basis of an original scheme, the position of a discharge hole is changed to be close to one side of a valve port; the contact surface of the spring base is changed into a spherical surface from a plane. After improvement, the position of the exhaust hole moves rightwards, the airflow direction is changed, meanwhile, the contact surface is changed into a spherical shape, the stress area is not changed, and the safety valve can be normally closed.

Description

Technical Field

[0001] The invention relates to the field of rocket attitude control, in particular to a safety valve for a spherical contact type track attitude control power system. Background Art

[0002] The orbit attitude control power system (orbit attitude control power system) is mainly used to complete orbit change and orbit entry tasks, which also includes climbing and changing the orbit inclination to eliminate attitude static errors, so that the satellite can fly in the predetermined attitude and orbit, ensure satellite performance, and complete the flight mission.

[0003] The orbital attitude control power system is mainly composed of high-pressure gas cylinders, electric explosion valves, pressure reducing valves, safety valves, one-way valves, tanks, orbital attitude control engines, etc. The safety valve is a pressure protection or pressure control element on the gas cylinders and gas tanks in the orbital attitude control power system. Its high reliability is an important condition to ensure that the orbital attitude control power system can accurately complete the rocket launch mission.

[0004] The structure of the existing safety valve is as follows Figure 2 shown. Figure 2 The safety valve shown in the figure is composed of valve body, valve core assembly, spring, spring seat, adjusting column, locking nut and other parts. The cross section of the valve core assembly is as follows: Figure 2 As shown. The current structure has the following problems: when the safety valve is opened, gas enters the valve cavity and is exhausted from the crescent gap of the valve core. Since the flow area of ​​the crescent gap of the valve core is small and the flow resistance is large, the lift force on the valve core is large, resulting in high return pressure and it cannot return to its seat normally. It should be noted that the airflow of the rocket is very large, and the pressure released by the safety valve is also very large, so it is easy to fail to return to its seat. Therefore, a new design that can reduce the flow resistance is urgently needed.

[0005] On October 13, 2024, with "safety valve and resistance and arc" as the abstract keywords, and the option to allow synonym expansion, a search was conducted in the Chinese Patent Publication Database, and CN201024062Y was found. It is a special balancing jack for a shielded hydraulic support, which includes a cylinder body, a piston rod arranged in the cylinder body, and a guide sleeve sleeved in the cylinder mouth of the cylinder body. The guide sleeve and the piston rod are liquid-tight, and the cylinder body and the guide sleeve are connected as a whole through a rectangular thread; the end of the piston rod and the bottom of the cylinder body are both arc surfaces; and safety valve interfaces are respectively provided at the bottom and the cylinder mouth of the cylinder body. It is completely different from the basic structure of this patent.

[0006] On October 13, 2024, an abstract search for "safety valve and resistance and arc" was conducted on China National Knowledge Infrastructure and the following irrelevant documents were found.

[0007] Zhao Xinli published "Research on the Formation Mechanism and Influencing Factors of Micro-clean Space on Excavation Face";

[0008] Murcia Juan Pablo and others published "Validation of European-scale simulated windspeed and wind generation time series";

[0009] H Akbari; LA Ackah; MK Mohanty published "Development of a new fineparticle dry separator";

[0010] "Panasonic launches new full heat exchanger with dual filtering mechanism" published in "Home Appliance Technology";

[0011] ""Method and Device for Calibrating Post-Injections of an Internal Combustion Engine" published by USPTO 20170152805;

[0012] "Analysis and Selection of Air Conditioning Solutions for Auxiliary Rooms in Tire Production Workshops" published by Xu Weichun;

[0013] "Numerical simulation and experimental study on winter humidification performance of heat pump driven liquid dehumidification air conditioning system" published by Wang Ziye;

[0014] "On multivariate extensions of the conditionalValue-at-Risk measure" published by E.Di Bernardino;

[0015] "Fancoils" published by Engineered Systems Magazine on June 29, 2011;

[0016] Shen Liecheng; Long Weiding published "Research on Key Technologies in Dry Coil Systems";

[0017] On October 13, 2024, a search was conducted on the website of the United States Patent and Trademark Office for "Safety valve with resistance with arc", and no relevant literature was found; the search URL was https: / / ppubs.uspto.gov / pubwebapp / .

[0018] On October 13, 2024, a search was conducted on the Korean Patent Office for "Safety valve and resistance and arc", and the search URL was http: / / eng.kipris.or.kr / enghome / main.jsp. The following non-related documents were found: Application number (date): 1020090053967 (2009.06.17) Fluid conveying method and dynamic fluid valve; Application number (date): 1020220137860 (2022.10.25) cleaning, disinfection, sterilization method; Application number (date): 1020167029004 (2015.03.17) Valve body and valve

[0019] Application number (date): 1020230004854 (2023.01.12) method using pack, coffee, waste, by-product, waste material; Application number (date): 1020207036831 (2019.07.11) sensitive dissolved components; Application number (date): 1020177012322 (2015.10.07) FACE SOAKING DEVICE; On October 13, 2024, searched for "Safety valve and resistance and arc" at WIPO's https: / / patentscope2.wipo.int / ;

[0020] The above technology is completely different from the concept of this patent. Summary of the invention

[0021] Purpose of the invention: To provide a better safety valve for a spherical contact rail attitude control power system. The specific purpose can be seen in the multiple substantial technical effects of the specific implementation part.

[0022] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0023] A safety valve for a spherical contact track attitude control power system includes a valve body 6, in which a valve core 5 is arranged, and the valve core 8 can be pressed against a valve seat 7 by a spring 4, and the other side of the spring 4 is arranged on a spring seat 3. The valve seat 7 has an air inlet arranged in the middle, and is characterized in that the air inlet and the inner wall of the arc-shaped contact hole 10 outside the valve seat 7 can be closed by contact, and a guide air outlet 11 is arranged around the valve body 6.

[0024] A further technical solution of the present invention is that the guide air outlet 11 is located in the guide direction of the arc-shaped contact hole 10 .

[0025] A further technical solution of the present invention is that the guide air outlet 11 is an inclined hole.

[0026] A further technical solution of the present invention is that the guide air outlet 11 is a horizontal hole.

[0027] A further technical solution of the present invention is that the guide air outlet 11 is arranged around the central circumference of the entire valve body.

[0028] A further technical solution of the present invention is that a rubber layer is arranged inside the arc-shaped contact hole 10, and the position where the rubber layer contacts the air inlet duct can be airtight.

[0029] The present invention adopting the above technical solution has the following beneficial effects compared with the prior art: the present invention provides an improved design scheme for a safety valve for a track attitude control power system. On the basis of the original scheme, the position of the discharge hole is changed to a side close to the valve port position; the contact surface of the spring base is changed from a plane to a spherical surface.

[0030] After the improvement, the exhaust hole was moved to the right, the airflow direction was changed, and the contact surface was changed to a spherical shape. The force area remained unchanged and the safety valve could be closed normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to further illustrate the present invention, the following is further described in conjunction with the accompanying drawings:

[0032] Figure 1 This is the structural diagram of this patent;

[0033] Figure 2 It is a structural diagram of the prior art;

[0034] Figure 3 for Figure 2 A magnified view of the local structure;

[0035] Figure 4 It is a structural diagram with airflow direction;

[0036] Among them: 1. Locking nut; 2. Adjusting column; 3. Spring seat; 4. Spring; 5. Valve core; 6. Valve body; 7. Valve seat; 8. Contact hole; 9. Air outlet; 10. Arc contact hole; 11. Guide air outlet. DETAILED DESCRIPTION

[0037] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention 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 cannot be understood as a limitation of the present invention. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] This patent provides a variety of parallel solutions. The different expressions are improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The fixing method not described in the text can be any fixing method such as thread fixing, bolt fixing or glue bonding.

[0040] Embodiment 1: Combination Figure 1 and Figure 2 A safety valve for a spherical contact track attitude control power system, the safety valve comprising a valve body 6, a valve core 5 being arranged in the valve body 6, the valve core 8 being able to be squeezed by a spring 4 against a valve seat 7, the other side of the spring 4 being arranged on a spring seat 3, an air inlet being arranged in the middle on the valve seat 7, characterized in that the air inlet and the inner wall of an arc-shaped contact hole 10 outside the valve seat 7 can be closed by contact, and a guide air outlet 11 is arranged around the valve body 6.

[0041] The substantial technical effect of the technical solution herein and its implementation process, namely the basic function, are as follows: the present invention provides an improved design scheme for a safety valve for a track attitude control power system. On the basis of the original scheme, the position of the discharge hole is changed to a side close to the valve port; the contact surface of the spring base is changed from a plane to a spherical surface.

[0042] After the improvement, the exhaust hole was moved to the right, the airflow direction was changed, and the contact surface was changed to a spherical shape. The force area remained unchanged and the safety valve could be closed normally.

[0043] Figure 2 The middle exhaust hole is located close to the valve core. When the safety valve is opened, the end face of the valve core is flat, the force-bearing area becomes larger, and the airflow pressure becomes larger, so the safety valve cannot be closed normally.

[0044] Figure 1 After the improvement, the exhaust hole is moved to the right, the air flow direction is changed, and the contact surface is changed to a spherical shape. The force area remains unchanged, and the safety valve can be closed normally.

[0045] Embodiment 2: As a further improved solution or parallel solution or optional independent solution, the guide air outlet 11 is located in the guide direction of the arc-shaped contact hole 10. The substantial technical effect and implementation process of the technical solution here, i.e., the basic function, are as follows: Therefore, there is no situation where the airflow is impacted back to cause excessive resistance.

[0046] Embodiment 3: As a further improved solution or parallel solution or optional independent solution, the guide gas outlet 11 is an inclined hole. The substantial technical effect and implementation process of the technical solution here, i.e., the basic function, are as follows: the inclined hole facilitates the gas to be guided out.

[0047] Embodiment 4: As a further improved solution or parallel solution or optional independent solution, the guide air outlet 11 is a horizontal hole. The substantial technical effect and implementation process of the technical solution here, i.e., the basic function, are as follows: the horizontal hole facilitates air outlet.

[0048] Embodiment 5: As a further improved solution or parallel solution or optional independent solution, the guide air outlet 11 is arranged around the central circumference of the entire valve body. The substantial technical effect and implementation process of the technical solution here, namely the basic function, are as follows: the air can be discharged evenly.

[0049] Embodiment 6: As a further improved solution or parallel solution or optional independent solution, a rubber layer is arranged inside the arc-shaped contact hole 10, and the position where the rubber layer contacts the air inlet can be airtight. The substantial technical effect and implementation process of the technical solution here, i.e., the basic function, are as follows: better airtightness.

[0050] Innovatively, each of the above effects exists independently, and a set of structures can be used to combine the above results.

[0051] It should be noted that the multiple solutions provided by this patent include the basic solution itself, which are independent of each other and do not restrict each other, but they can also be combined with each other without conflict to achieve multiple effects together.

[0052] The basic principle, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the protection required.

Claims

1. A safety valve for a spherical contact type track attitude control power system, the safety valve comprising a valve body (6), a valve core (5) arranged in the valve body (6), the valve core (8) being pressed against a valve seat (7) by a spring (4), the other side of the spring (4) being arranged on a spring seat (3), an air inlet arranged in the middle of the valve seat (7), characterized in that: The air inlet and the inner wall of the arc-shaped contact hole (10) outside the valve seat (7) are in contact to achieve sealing, and a guide air outlet (11) is arranged around the valve body (6).

2. The safety valve for the spherical contact type track attitude control power system according to claim 1, characterized in that: The guide air outlet (11) is located in the guide direction of the arc-shaped contact hole (10).

3. The safety valve for the spherical contact type track attitude control power system according to claim 2, characterized in that: The guide air outlet (11) is an inclined hole.

4. The safety valve for the spherical contact type track attitude control power system according to claim 2, characterized in that: The guide air outlet (11) is a horizontal hole.

5. The safety valve for the spherical contact type track attitude control power system according to claim 2, characterized in that: The guide air outlet (11) is arranged around the central circumference of the entire valve body.

6. The safety valve for a spherical contact type track attitude control power system according to claim 1, characterized in that: A rubber layer is arranged inside the arc-shaped contact hole (10), and the position where the rubber layer contacts the air inlet passage can be airtight.

7. The safety valve for a spherical contact type track attitude control power system according to claim 1, characterized in that: The discharge hole position is changed to the side close to the valve port; the contact surface of the spring base is changed from a plane to a spherical surface; the exhaust hole position is moved to the right, the airflow direction is changed, and the contact surface is changed to a spherical shape at the same time, the force area remains unchanged, and the safety valve can be closed normally; there is no situation where the airflow is impacted and returned to cause excessive resistance; the inclined hole is convenient for guiding the gas out.

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