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

Abstract

The utility model relates to the field of rocket attitude control, in particular to a safety valve for a spherical surface contact type rail 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 utility model 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 insertion tasks, which also include climbing and changing the orbit inclination to eliminate attitude static errors, so that the satellite can fly according to the predetermined attitude and orbit, ensure satellite performance, and complete the flight mission.

[0003] The orbital attitude control power system mainly consists 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 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 The current structure presents the following issues: When the safety valve opens, gas enters the valve cavity and is exhausted through the crescent-shaped gap in the valve core. Due to the small flow area and high flow resistance in the crescent-shaped gap, the valve core experiences a high lift force, resulting in high reseating pressure and failure to reseat properly. It's important to note that rocket airflow is high, and the pressure released by the safety valve is also high, making it prone to failure to reseat. Therefore, a new design that reduces flow resistance is urgently needed.

[0005] On October 13, 2024, a search was conducted in the China Patent Publication Database using "safety valve, resistance, and arc" as abstract keywords, with the option to allow synonym expansion selected. CN201024062Y was discovered. This patent describes a dedicated balancing jack for a shielded hydraulic support. The jack comprises a cylinder body, a piston rod disposed within the cylinder body, and a guide sleeve sleeved within the cylinder port. The guide sleeve and piston rod are fluid-tightly sealed, and the cylinder body and guide sleeve are integrally connected via rectangular threads. The piston rod end and the cylinder body bottom are both arc-shaped. Safety valve interfaces are provided at the cylinder bottom and port, respectively. This patent has a completely different basic structure from that of the present invention.

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

[0007] Zhao Xinli published "Research on the Formation Mechanism and Influencing Factors of Micro-clean Space in 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, and MK Mohanty published "Development of a new fine particle dry separator";

[0010] "Panasonic Launches New Full Heat Exchanger with Dual Filtration Mechanism" published in Home Appliance Technology;

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

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

[0013] Wang Ziye published "Numerical Simulation and Experimental Study on Winter Humidification Performance of Heat Pump Driven Solution Dehumidification Air Conditioning System";

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

[0015] Engineered Systems Magazine published "Fancoi ls" on June 29, 2011;

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

[0017] On October 13, 2024, a search for "Safety valve with resistance with arc" was conducted on the website of the United States Patent and Trademark Office, 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 Intellectual Property Office for "Safety valve and resistance and arc" at the search URL http: / / eng.kipris.or.kr / enghome / main.jsp. The following non-related documents were found: Application Number (Date): 1020090053967 (June 17, 2009) Fluid transport method and dynamic fluid valve; Application Number (Date): 1020220137860 (October 25, 2022) Cleaning, disinfection, and sterification method; Application Number (Date): 1020167029004 (March 17, 2015) Valve body and valve

[0019] Application number (date): 1020230004854 (January 12, 2023) method using pack, coffee, waste, by-product, waste material; Application number (date): 1020207036831 (July 11, 2019) sensitive dissolved component; Application number (date): 1020177012322 (October 7, 2015) face soaking device; On October 13, 2024, the search was conducted on WIPO's https: / / patentscope2.wipo.int / for "safety valve and resistance and arc";

[0020] The above technology is completely different from the concept of this patent. Utility Model Content

[0021] Purpose of the utility model: To provide a better safety valve for 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 spherical contact type safety valve for a track attitude control power system includes a valve body 6 in which a valve core 5 is arranged. The valve core 5 can be squeezed by a spring 4 against a valve seat 7. 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. The feature is 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 intake duct can be airtight.

[0029] The utility model adopting the above technical solution has the following beneficial effects compared with the existing technology: the utility model 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 the 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 position 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 a further description with reference to 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 This is an enlarged view of the local structure of spherical contact;

[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 terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on 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 a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

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

[0039] This patent provides multiple parallel solutions. The differences in descriptions are improvements 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 utility model described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described in this article can be any fixing method such as threaded fixing, bolt fixing, or gluing.

[0040] Example 1: Combination Figure 1 and Figure 2 A safety valve for a spherical contact rail attitude control power system comprises a valve body 6 in which a valve core 5 is arranged. The valve core 5 can be squeezed by a spring 4 against a valve seat 7. 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. The feature of the invention is 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.

[0041] The substantial technical effects of the technical solution herein and its implementation process, i.e., the basic functions, are as follows: The utility model 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 the side close to the valve port position; the contact surface of the spring base is changed from a plane to a spherical surface.

[0042] After the improvement, the exhaust hole position 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 airflow direction is changed, and the contact surface is changed to a spherical shape. The force-bearing area remains unchanged, and the safety valve can be closed normally.

[0045] Example 2: As a further improved solution, a parallel solution, or an 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 this technical solution, i.e., the basic function, are as follows: Therefore, there is no situation where the airflow is impacted and returned, causing 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 outflow of gas.

[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 herein, 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 herein, i.e., the basic function, are as follows: uniform air outlet.

[0049] Example 6: As a further improved solution, a parallel solution, or an optional independent solution, a rubber layer is disposed within the arcuate contact hole 10, ensuring airtightness at the point where the rubber layer contacts the air intake duct. The substantial technical effect and implementation process of this technical solution, i.e., its basic function, are as follows: improved 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 solutions themselves, 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 above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the claimed invention.

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 (5) 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 being arranged in the middle of the valve seat (7), and 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 on the periphery of the valve body (6).

2. The safety valve for a spherical contact rail 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 a spherical contact rail 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 a spherical contact rail 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 a spherical contact rail 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 rail 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 can be airtight.

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