An electromagnetic control valve

Abstract

This application discloses an electromagnetic control valve, which includes a valve body, an electromagnet assembly, an opening and closing control assembly, a first return spring, and multiple sets of one-way control assemblies. The valve body has an air inlet and multiple air outlets communicating with the air inlet. The electromagnet assembly is mounted on the first end of the valve body. The opening and closing control assemblies slide against the valve body, and the first end of the opening and closing control assemblies engages with the electromagnet assembly. The first return spring acts between the electromagnet assembly and the opening and closing control assemblies, and is used to drive the opening and closing control assemblies to reset. Each one-way control assembly is mounted on the valve body, and each one-way control assembly corresponds to one of the air outlets. The electromagnetic control valve disclosed in this application has an air inlet and multiple air outlets communicating with it. Multiple positions of purging and gas sealing control can be achieved through a single valve body, greatly simplifying the pipeline layout during liquid rocket assembly, reducing the number of pipelines and connection points, and lowering the difficulty of pipeline installation and maintenance.

Description

Technical Field

[0001] This application belongs to the field of electromagnetic valve technology, and specifically relates to an electromagnetic control valve. Background Technology

[0002] In liquid rocket technology, to prevent propellant cross-contamination within the engine and to prevent water vapor and other foreign matter from entering the rocket interior, a purging and gas-sealing control system is typically installed. This system is used for purging and replacing internal components and sealing external interfaces. In existing technologies, the purging and gas-sealing system layout often involves a high-pressure gas cylinder connected to a pressure-reducing device, followed by a solenoid valve controlling the flow and shut-off of the medium. A check valve is then connected to the solenoid valve to control the purging flow rate, and metal pipes connect the components. This layout requires independent wiring for different purging and gas-sealing locations, resulting in a complex system piping layout, increased overall rocket system weight, and reduced payload capacity. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this application discloses an electromagnetic control valve.

[0004] This invention provides an electromagnetic control valve, comprising: The valve body is provided with an air inlet and multiple air outlets communicating with the air inlet; An electromagnet assembly is installed at the first end of the valve body; an opening and closing control assembly is slidably engaged with the valve body, and the first end of the opening and closing control assembly is engaged with the electromagnet assembly. A first reset spring acts between the electromagnet assembly and the opening / closing control assembly, and the first reset spring is used to drive the opening / closing control assembly to reset; and Multiple sets of one-way control components are provided, each of which is installed on the valve body and is configured to correspond one-to-one with each of the air outlets. When the electromagnet assembly is energized, the electromagnet assembly drives the opening and closing control assembly to move toward the first end of the valve body so that the air inlet is connected to each of the air outlets. When the electromagnet assembly is de-energized, the first reset spring drives the opening and closing control assembly to move toward the second end of the valve body to close the air inlet.

[0005] According to one embodiment of the present invention, the opening and closing control assembly includes an armature and a valve core, the valve core is connected to the armature, the armature cooperates with the electromagnet assembly, and the two ends of the first reset spring act on the electromagnet assembly and the armature respectively.

[0006] According to one embodiment of the present invention, the opening and closing control assembly further includes a push rod, the first end of which is connected to the armature, and the second end of which is connected to the valve core.

[0007] According to one embodiment of the present invention, the valve core is provided with a control cavity and a connecting hole, the first end of the connecting hole extends to the side wall of the valve core, and the second end of the connecting hole communicates with the control cavity; the second end of the push rod is provided with a first snap-fit ​​part, which snaps into the control cavity, and when the electromagnet assembly is de-energized, the connecting hole communicates with the air inlet.

[0008] According to one embodiment of the present invention, the valve core and / or the first snap-fit ​​portion are provided with a flow guide groove at a position corresponding to the connection hole.

[0009] According to one embodiment of the present invention, the height of the first snap-fit ​​portion is less than the height of the control cavity.

[0010] According to one embodiment of the present invention, the valve core is further provided with a through hole located at the second end of the valve core, the first end of the through hole communicating with the control cavity, and the second end of the through hole extending to the end face of the second end of the valve core. When the electromagnet assembly is de-energized, the through hole is blocked from the control cavity.

[0011] According to one embodiment of the present invention, the diameter of the through hole is larger than the diameter of the connecting hole.

[0012] According to one embodiment of the present invention, the valve body further includes a main cavity and an air outlet cavity, the air inlet is connected to the main cavity, the first end of the air outlet cavity is connected to the main cavity, and the second end of the air outlet cavity is connected to each of the air outlets; the valve core moves within the main cavity; the valve body has a protrusion at the bottom of the main cavity, the protrusion is annular around the air outlet cavity, the outer diameter of the protrusion is smaller than the diameter of the valve core, and the inner diameter of the protrusion is larger than the diameter of the through hole.

[0013] According to one embodiment of the present invention, the one-way control component includes an outlet nozzle, an outlet valve, and a second return spring. The outlet nozzle is installed on the valve body and is located at the air outlet. The outlet valve is slidably engaged with the outlet nozzle. The two ends of the second return spring act on the outlet nozzle and the outlet valve, respectively. The second return spring is used to drive the outlet valve to close the air outlet.

[0014] As can be seen from the above technical solution, the electromagnetic control valve disclosed in this application includes a valve body, an electromagnet assembly, an opening and closing control assembly, a first return spring, and multiple sets of one-way control assemblies. The valve body is provided with an air inlet and multiple air outlets communicating with the air inlet. The electromagnet assembly is installed at the first end of the valve body. The opening and closing control assembly slides with the valve body, and the first end of the opening and closing control assembly engages with the electromagnet assembly. The first return spring acts between the electromagnet assembly and the opening and closing control assembly, and is used to drive the opening and closing control assembly to reset. Each of the one-way control assemblies is installed on the valve body, and each one-way control assembly corresponds to each air outlet. When the electromagnet assembly is energized, the electromagnet assembly drives the opening and closing control assembly to move toward the first end of the valve body so that the air inlet communicates with each of the air outlets; when the electromagnet assembly is de-energized, the first return spring drives the opening and closing control assembly to move toward the second end of the valve body to close the air inlet.

[0015] The electromagnetic control valve disclosed in this application has an air inlet and multiple air outlets connected to it. Multiple locations can be purged and gas-sealed with a single valve body, greatly simplifying the piping layout during liquid rocket assembly, reducing the number of pipes and connection points, and lowering the difficulty of pipe installation and maintenance. This electromagnetic control valve has both electromagnetic control and reverse sealing functions, ensuring unidirectional flow of the medium in the piping system and preventing downstream media from affecting upstream pipelines. By integrating the functions of an electromagnetic control valve and a check valve, it possesses the ability to achieve media flow and cut-off via electromagnetic control, and through multiple sets of unidirectional control components corresponding one-to-one with the air outlets, it achieves control over the flow rate of the purging gas-sealing medium. Simultaneously, the reverse sealing function of the check valve prevents reverse cross-contamination of media at different locations. This integrated design reduces the number of valves in the system, making the system structure more compact and saving installation space. Attached Figure Description

[0016] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0017] Figure 1 This is a front sectional view of the electromagnetic control valve in one or more embodiments of this application; Figure 2 for Figure 1 A side sectional view of the electromagnetic control valve. Figure 3 for Figure 1 Schematic diagram of the middle valve body; Figure 4 for Figure 3 A schematic diagram of the valve body from another perspective.

[0018] Explanation of reference numerals in the attached drawings: 100, valve body; 110, air inlet; 120, air outlet; 130, air outlet chamber; 140, main chamber; 150, protrusion; 200, electromagnet assembly; 300, opening and closing control assembly; 310, armature; 320, valve core; 321, control chamber; 322, through hole; 323, connecting hole; 330, push rod; 331, first locking part; 400, first return spring; 500, one-way control assembly; 510, outlet nozzle; 520, outlet valve; 530, second return spring. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0022] This invention discloses an electromagnetic control valve that can solve the technical problem of complex pipeline layout in existing purging and gas sealing control systems, thereby improving system efficiency and reliability.

[0023] The technical solution of this application will be described in detail below through specific embodiments: See Figure 1 , Figure 2 , Figure 3 and Figure 4This application discloses an electromagnetic control valve, which includes a valve body 100, an electromagnet assembly 200, an opening / closing control assembly 300, a first return spring 400, and multiple sets of one-way control assemblies 500. The valve body 100 is provided with an air inlet 110 and multiple air outlets 120 communicating with the air inlet 110. The electromagnet assembly 200 is installed at the first end of the valve body 100. The opening / closing control assembly 300 is slidably engaged with the valve body 100, and the first end of the opening / closing control assembly 300 engages with the electromagnet assembly 200. The first return spring 400 acts between the electromagnet assembly 200 and the opening / closing control assembly 300, and is used to drive the opening / closing control assembly 300 to reset. Each one-way control assembly 500 is installed on the valve body 100, and each one-way control assembly 500 corresponds one-to-one with each air outlet 120.

[0024] When the electromagnet assembly 200 is energized, the electromagnet assembly 200 drives the opening and closing control assembly 300 to move toward the first end of the valve body 100 so that the air inlet 110 is connected to each air outlet 120; when the electromagnet assembly 200 is de-energized, the first reset spring 400 drives the opening and closing control assembly 300 to move toward the second end of the valve body 100 to close the air inlet 110.

[0025] The electromagnetic control valve body 100 disclosed in this embodiment has an air inlet 110 and multiple air outlets 120 connected to it. Multiple positions can be purged and gas-sealed with a single valve body 100, greatly simplifying the pipeline layout during liquid rocket assembly, reducing the number of pipelines and connection points, and lowering the difficulty of pipeline installation and maintenance. This electromagnetic control valve has both electromagnetic control and reverse sealing functions, ensuring that the medium flows in only one direction in the pipeline system, preventing downstream media from affecting upstream pipelines by integrating the functions of an electromagnetic control valve and a check valve. It possesses the ability of an electromagnetic control valve to achieve media flow and cut-off, and through multiple sets of one-way control components 500 corresponding one-to-one with the air outlets 120, it achieves control over the flow rate of the purging gas-sealing medium. Simultaneously, relying on the reverse sealing function of the check valve, it isolates the reverse flow of media between different positions. This integrated design reduces the number of valves in the system, making the system structure more compact and saving installation space.

[0026] It should be noted that in this embodiment, for vertically arranged components, the upper end is referred to as the first end, and the lower end as the second end.

[0027] In one embodiment, the opening / closing control assembly 300 includes an armature 310 and a valve core 320. The valve core 320 is connected to the armature 310, which cooperates with the electromagnet assembly 200. The two ends of the first return spring 400 act on the electromagnet assembly 200 and the armature 310, respectively. When the electromagnet assembly 200 is energized, the electromagnet assembly 200 and the armature 310 interact, causing the armature 310 to push the valve core 320 toward the second end of the valve body 100 to close the air inlet 110.

[0028] The armature 310 and the valve core 320 are connected to form the opening and closing control assembly 300. This simple and effective structural design makes the internal structure of the entire electromagnetic control valve more compact.

[0029] The movement of the valve core 320 is controlled by the interaction between the electromagnet assembly 200 and the armature 310. This electromagnetic drive has a clear and easy-to-understand working principle, is technically mature, and has high reliability. When the electromagnet assembly 200 is energized, it generates a magnetic field that attracts the armature 310, thereby driving the valve core 320 to move. When the power is off, the magnetic field disappears, and the armature 310 and the valve core 320 return to their original positions under the action of the first return spring 400.

[0030] The electromagnet assembly 200 is a mature technology, and this embodiment does not propose any improvements to the electromagnet assembly 200 itself. Therefore, this embodiment will not further explain the structure and working principle of the electromagnet assembly 200. The electromagnet assembly 200 can be purchased and used directly on the market.

[0031] In one embodiment, the opening / closing control assembly 300 further includes a push rod 330. A first end of the push rod 330 is connected to an armature 310, and a second end of the push rod 330 is connected to a valve core 320.

[0032] The presence of the push rod 330 allows for the relatively independent yet interconnected installation of the armature 310 and the valve core 320. During assembly, the armature 310 and valve core 320 can be installed separately first, and then connected together via the push rod 330, reducing installation difficulty and improving assembly efficiency. Furthermore, during the commissioning phase, the length or position of the push rod 330 can be adjusted to precisely control the travel and position of the valve core 320, thereby better meeting the design requirements of the solenoid control valve.

[0033] In one embodiment, the valve core 320 is provided with a control cavity 321 and a connection hole 323. The first end of the connection hole 323 extends to the side wall of the valve core 320, and the second end of the connection hole 323 communicates with the control cavity 321. The second end of the push rod 330 is provided with a first locking part 331, which is locked into the control cavity 321.

[0034] When the electromagnet assembly 200 is de-energized, the connection hole 323 connects to the air inlet 110. At this time, the lower surface of the valve core 320 has the same air pressure as the air outlet 120, and the upper surface of the valve core 320 has the same air pressure as the air inlet 110. Since the pressure at the air inlet 110 is greater than the pressure at the air outlet 120, the pressure on the upper surface of the valve core 320 is greater than the pressure on its lower surface. This medium force has a tendency to push the valve core 320 downwards, causing it to close the air inlet 110 and the air outlet 120. This medium force, combined with the elastic force of the first return spring 400, forms a dual force, greatly enhancing the valve core 320's ability to block the air inlet 110 and the air outlet 120, effectively preventing gas leakage and improving the sealing performance of the electromagnetic control valve.

[0035] During the operation of the electromagnetic control valve, it may be subject to various external interferences, such as pressure fluctuations and vibrations. Through the synergistic action of the medium force and the first return spring 400, the valve core 320 can maintain stability in the closed position and resist the influence of external interference. Even if the pressure at the inlet 110 fluctuates to a certain extent, the medium force will change accordingly, but together with the elasticity of the first return spring 400, it can still ensure that the valve core 320 tightly seals the inlet 110 and the outlet 120, ensuring the stable operation of the system.

[0036] Compared to some electromagnetic control valves that require continuous energization to maintain a closed state, this design utilizes the medium force to assist the first return spring 400 in achieving stable blocking of the valve core 320. After the electromagnet assembly 200 is de-energized, no additional electrical energy is required to maintain the valve's closed state. This not only reduces energy consumption, meeting energy conservation and emission reduction requirements, but also reduces heat accumulation that may occur due to prolonged energization, lowering the risk of electromagnetic control valve failure and improving system reliability and safety.

[0037] In one embodiment, the first end of the push rod 330 is provided with a second locking portion, which is locked to the armature 310. A mounting groove can be formed at the bottom of the armature 310, and the second locking portion can be locked into the mounting groove to form a fixed connection.

[0038] The snap-fit ​​structure between the second snap-fit ​​part and the mounting groove at the bottom of the armature 310 provides strong mechanical restraint. Compared with some simple connection methods, such as threaded connections which may loosen due to vibration or welding which may crack due to high temperature or stress, this snap-fit ​​method can more effectively prevent relative displacement or separation between the push rod 330 and the armature 310 during the operation of the electromagnetic control valve, ensuring the stability and reliability of the connection between the two.

[0039] The snap-fit ​​structure allows for a more uniform stress distribution between the push rod 330 and the armature 310. During operation, the electromagnetic force is transmitted to the push rod 330 through the armature 310. The snap-fit ​​method disperses the stress to various parts of the mounting groove, avoiding component damage caused by localized stress concentration.

[0040] A robust snap-fit ​​connection ensures the synchronization and accuracy of movement between the push rod 330 and the armature 310. When the electromagnet assembly 200 is energized or de-energized, the movement of the armature 310 can be precisely transmitted to the valve core 320 through the push rod 330, enabling the valve core 320 to move according to a predetermined stroke and speed. This achieves precise control over the opening and closing of the air inlet 110 and the air outlet 120, improving the control accuracy and response speed of the electromagnetic control valve.

[0041] In one embodiment, the valve core 320 and / or the first snap-fit ​​portion 331 are provided with a guide groove at a position corresponding to the connection hole 323. The guide groove can smoothly guide the flow of the air inlet 110 to the bottom upper surface of the valve core 320, thereby using the medium force to achieve stable blocking of the valve body 100.

[0042] The guide channel smoothly guides the gas from the inlet 110 to the upper bottom surface of the valve core 320, allowing this surface to be fully subjected to the force of the high-pressure gas from the inlet 110. Since the pressure at the inlet 110 is greater than that at the outlet 120, this design more effectively generates the medium force that pushes the valve core 320 downwards to seal the inlet 110 and outlet 120. Compared to the case without the guide channel, the magnitude and effectiveness of the medium force are significantly enhanced, thereby improving the valve core 320's ability to block the inlet 110 and outlet 120.

[0043] In this configuration, a guide groove can be provided only on the valve core 320. In this case, the guide groove is located on the side wall of the control cavity 321, with the top of the guide groove communicating with the connection hole 323 and the bottom of the guide groove extending to the bottom of the control cavity 321.

[0044] Alternatively, a guide groove can be provided only on the first snap-fit ​​portion 331, with the position of the guide groove corresponding to the connection hole 323, and the guide groove extending to the bottom surface of the first snap-fit ​​portion 331. In this way, even when the first snap-fit ​​portion 331 moves up and down, the guide groove can ensure that the connection hole 323 and the bottom of the control cavity 321 are continuously connected.

[0045] Guide grooves can also be provided on both the valve core 320 and the first snap-fit ​​part 331.

[0046] In one embodiment, the height of the first snap-fit ​​portion 331 is less than the height of the control cavity 321.

[0047] During the operation of the solenoid control valve, the first locking part 331 moves up and down within the control cavity 321 along with the movement of the push rod 330 and the armature 310. The height of the first locking part 331 is less than the height of the control cavity 321, ensuring sufficient movement space within the control cavity 321 and preventing collisions or jamming with the top or bottom of the control cavity 321 due to height limitations. This allows the valve core 320 to accurately complete opening and closing actions according to design requirements, ensuring the normal operation of the solenoid control valve.

[0048] In one embodiment, the valve core 320 is further provided with a through hole 322. The through hole 322 is located at the second end of the valve core 320, the first end of the through hole 322 communicates with the control cavity 321, and the second end of the through hole 322 extends to the end face of the second end of the valve core 320.

[0049] When the electromagnet assembly 200 is de-energized, the through hole 322 is blocked from the control cavity 321. When the electromagnet assembly 200 is energized, it first drives the push rod 330 to move upward. At this time, the volume of the lower half of the control cavity 321 connected to the through hole 322 and the air outlet 120 increases, resulting in a decrease in pressure within the control cavity 321. The pressure on the bottom upper surface of the valve core 320 is then less than the pressure on its lower surface. This medium force can push the valve core 320 upward, thereby connecting the air inlet 110 and the air outlet 120.

[0050] This rapid pressure change creates a pressure difference between the upper and lower surfaces of the valve core 320, using the force of the medium to push the valve core 320 upward, thus achieving rapid connection between the inlet 110 and the outlet 120. Compared to a design without the through hole 322, this design reduces the pressure equalization time, significantly improving the response speed of the solenoid control valve and enabling it to adapt more quickly to the system's gas flow control requirements. Due to the presence of the through hole 322, the movement of the valve core 320 is closely related to the pressure changes within the control chamber 321. The pressure change within the control chamber 321 immediately acts on the valve core 320 the instant the electromagnet assembly 200 is energized, reducing the action delay that may exist in traditional designs due to mechanical transmission or fluid inertia.

[0051] In one embodiment, the diameter of the through hole 322 is larger than the diameter of the connecting hole 323.

[0052] When the first engaging portion 331 moves upward, the volume of the lower half of the control chamber 321 connected to the through hole 322 and the air outlet 120 increases, resulting in a decrease in pressure within the control chamber 321. Since the diameter of the through hole 322 is larger than the diameter of the connecting hole 323, the gas flow rate supplied to the control chamber 321 from the connecting hole 323 is relatively small, making it impossible to balance the pressure within the control chamber 321 with the pressure at the air inlet 110 in a short time. This creates a significant and stable pressure difference between the upper and lower surfaces of the valve core 320, providing the necessary conditions for the medium force to push the valve core 320 upward.

[0053] The larger diameter of the through hole 322, combined with the smaller diameter of the connecting hole 323, allows for precise control of the pressure change rate within the control chamber 321. By adjusting the difference between the two hole diameters, the speed and extent of pressure drop during the opening of the valve core 320 can be controlled according to actual working requirements, making the movement of the valve core 320 smoother and more controllable.

[0054] In one embodiment, the valve body 100 further includes a main cavity 140 and an outlet cavity 130. An inlet 110 communicates with the main cavity 140, a first end of the outlet cavity 130 communicates with the main cavity 140, and a second end of the outlet cavity 130 communicates with each outlet 120. The valve core 320 moves within the main cavity 140. A protrusion 150 is provided at the bottom of the main cavity 140 of the valve body 100. The protrusion 150 is annular around the outlet cavity 130, with an outer diameter smaller than the diameter of the valve core 320 and an inner diameter larger than the diameter of the through hole 322.

[0055] When the electromagnet assembly 200 is de-energized, the pressure at the air inlet 110 acts on the bottom upper surface of the valve core 320, and the pressure at the air outlet 120 acts on the part between the bottom through hole 322 and the protrusion 150 of the valve core 320.

[0056] When the electromagnet assembly 200 is energized, the push rod 330 moves upward, the pressure of the air inlet 110 acts on the part of the valve core 320 outside the outer diameter of the protrusion 150 on the bottom lower surface, and the pressure at the air outlet 120 acts on the bottom upper surface of the valve core 320.

[0057] Since the pressure at the air inlet 110 is always greater than the pressure at the air outlet 120, when the electromagnet assembly 200 is de-energized, the medium force causes the valve core 320 to tend to move downwards to block the air inlet 110 from the air outlet 120; when the electromagnet assembly 200 is energized, the medium force causes the valve core 320 to tend to move upwards to connect the air inlet 110 with the air outlet 120.

[0058] In one embodiment, the one-way control assembly 500 includes an outlet nozzle 510, an outlet valve 520, and a second return spring 530. The outlet nozzle 510 is mounted on the valve body 100 and located at the air outlet 120. The outlet nozzle 510 can be connected to the valve body 100 via a threaded connection, facilitating easy assembly and disassembly. The outlet valve 520 is slidably engaged with the outlet nozzle 510; moving the outlet valve 520 opens or closes the air outlet 120. The two ends of the second return spring 530 act on the outlet nozzle 510 and the outlet valve 520 respectively, driving the outlet valve 520 to close the air outlet 120.

[0059] Under normal operating conditions, in conjunction with the control of the valve core 320 inside the valve body 100, the outlet valve 520, under the elastic force of the second return spring 530, presses against the valve body 100, thereby closing the outlet 120. When gas needs to flow from the inlet 110 to the outlet 120, opening the valve core 320 increases the pressure at the outlet 120. This pressure pushes the outlet valve 520 to open the outlet 120, allowing the gas to pass smoothly. When the gas tends to flow in the opposite direction, the outlet valve 520, under the action of the second return spring 530, will quickly close the outlet 120, effectively preventing gas backflow and achieving unidirectional gas flow control, thus meeting the strict requirements of many pneumatic systems for gas flow direction.

[0060] When the air pressure downstream of the outlet valve 520 is low, the second return spring 530 alone applies a thrust to the outlet valve, thereby closing the outlet 120. When the air pressure downstream of the outlet valve 520 is high, the air pressure can also push the outlet valve 520 towards the valve body 100. Under the combined action of the second return spring 530 and the downstream air pressure, the outlet valve 520 can stably close the outlet 120, achieving a reverse sealing function.

[0061] The ventilation pressure of the one-way control component 500 can be controlled by the second return spring 530, and the pressure of each one-way control component 500 can be set to be different.

[0062] The working principle of the electromagnetic control valve disclosed in this application is as follows: When the electromagnet assembly 200 is energized, it drives the push rod 330 to move upward. The lower half of the control chamber 321 connects with the through hole 322 and the air outlet 120, increasing its volume and decreasing its pressure. At this time, the pressure on the upper surface of the valve core 320 is less than the pressure on the lower surface. Using this medium force, the valve core 320 is pushed upward, quickly connecting the air inlet 110 and the air outlet 120, thus opening the valve body 100.

[0063] When the electromagnet assembly 200 is de-energized, the connection hole 323 connects to the air inlet 110. The upper surface of the bottom of the valve core 320 has the same air pressure as the air inlet 110, and the lower surface has the same air pressure as the air outlet 120. Since the pressure at the air inlet 110 is greater than the pressure at the air outlet 120, the pressure on the upper surface of the bottom of the valve core 320 is greater than that on the lower surface. This medium force pushes the valve core 320 downward, which, in conjunction with the elastic force of the first return spring 400, enhances the valve core 320's ability to block the air inlet 110 and the air outlet 120, effectively preventing gas leakage. At this time, the valve body 100 is in the closed state.

[0064] Through the above embodiments, this application has the following beneficial effects or advantages: The electromagnetic control valve disclosed in this application integrates the advantages of electromagnetic control valves and check valves, enabling both media flow and cut-off, as well as controlling the flow rate of the purging and sealing media. Relying on the reverse sealing function of the check valve, it isolates the reverse flow of media between different locations, ensuring the safe and reliable operation of the electromagnetic control valve and improving the stability and reliability of the system. The internal multi-channel design allows for simultaneous purging and sealing control at different locations, eliminating the need for independent wiring for different locations. This significantly reduces the difficulty of liquid rocket assembly layout, reduces the number of pipelines, thereby reducing the overall weight of the rocket system and improving the rocket's carrying capacity.

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention have been clearly and completely described above with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0066] Therefore, the above detailed description of the embodiments of the invention disclosed in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0067] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0068] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0071] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0072] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An electromagnetic control valve, characterized in that, include: The valve body is provided with an air inlet and multiple air outlets communicating with the air inlet; An electromagnet assembly is installed at the first end of the valve body; An opening and closing control component is slidably engaged with the valve body, and the first end of the opening and closing control component is engaged with the electromagnet component; A first reset spring acts between the electromagnet assembly and the opening / closing control assembly, and the first reset spring is used to drive the opening / closing control assembly to reset; and Multiple sets of one-way control components are provided, each of which is installed on the valve body and is configured to correspond one-to-one with each of the air outlets. When the electromagnet assembly is energized, the electromagnet assembly drives the opening and closing control assembly to move toward the first end of the valve body so that the air inlet is connected to each of the air outlets. When the electromagnet assembly is de-energized, the first reset spring drives the opening and closing control assembly to move toward the second end of the valve body to close the air inlet. The opening and closing control component includes an armature and a valve core. The valve core is connected to the armature, and the armature cooperates with the electromagnet assembly. The two ends of the first return spring act on the electromagnet assembly and the armature, respectively. The opening and closing control assembly also includes a push rod, the first end of which is connected to the armature, and the second end of which is connected to the valve core; The valve core is provided with a control cavity and a connection hole. The first end of the connection hole extends to the side wall of the valve core, and the second end of the connection hole communicates with the control cavity. The second end of the top rod is provided with a first snap-fit ​​part, which snaps into the control cavity. When the electromagnet assembly is de-energized, the connecting hole communicates with the air inlet. The valve core is also provided with a through hole located at the second end of the valve core. The first end of the through hole is connected to the control cavity, and the second end of the through hole extends to the end face of the second end of the valve core. When the electromagnet assembly is de-energized, the through hole is blocked from the control cavity.

2. The electromagnetic control valve according to claim 1, characterized in that, The valve core and / or the first snap-fit ​​portion are provided with a flow guide groove at a position corresponding to the connection hole.

3. The electromagnetic control valve according to claim 1, characterized in that, The height of the first snap-fit ​​portion is less than the height of the control cavity.

4. The electromagnetic control valve according to claim 1, characterized in that, The diameter of the through hole is larger than the diameter of the connecting hole.

5. The electromagnetic control valve according to claim 1, characterized in that, The valve body further includes a main cavity and an air outlet cavity. The air inlet is connected to the main cavity, the first end of the air outlet cavity is connected to the main cavity, and the second end of the air outlet cavity is connected to each of the air outlets. The valve core moves within the main cavity; The valve body has a protrusion at the bottom of the main cavity. The protrusion is annular around the air outlet cavity. The outer diameter of the protrusion is smaller than the diameter of the valve core, and the inner diameter of the protrusion is larger than the diameter of the through hole.

6. The electromagnetic control valve according to any one of claims 1 to 5, characterized in that, The one-way control component includes an outlet nozzle, an outlet valve, and a second return spring. The outlet nozzle is installed on the valve body and is located at the air outlet. The outlet valve is slidably engaged with the outlet nozzle. The two ends of the second return spring act on the outlet nozzle and the outlet valve, respectively. The second return spring is used to drive the outlet valve to close the air outlet.

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