An integrated pilot gas source device

Abstract

The application relates to an integrated pilot gas source device in the technical field of pneumatic ejection, which comprises a gas cylinder and a valve body with a gas path interface, both ends of the valve body are sealingly connected with the gas cylinder, one side of the valve body is provided with a gas charging valve in communication with the gas cylinder, one end of the valve body is provided with a mounting cavity, a launching electromagnetic valve is fixedly installed in the mounting cavity, the launching electromagnetic valve is located in the inner cavity of the gas cylinder on the same side, the valve body is further provided with an electric connector in electric connection with the launching electromagnetic valve, the other end of the valve body is provided with a main valve cavity with a middle part in communication with the gas path interface, the main valve cavity is provided with a main valve core structure capable of blocking the communication between the gas path interface and the main valve cavity, the launching electromagnetic valve embedded in the gas cylinder is used to control the high-pressure gas to push the actuating piston in the limited space, the timing control of first unlocking and then ejection is completed, and the purpose of controlling the large-bore flow by the small-bore through the pilot structure of the main valve core and the auxiliary valve core is achieved.

Description

Technical Field

[0001] This invention relates to the field of pneumatic catapult technology, and in particular to an integrated pilot air source device. Background Technology

[0002] Currently, the launch method for medium and larger launchers mounted in launch bays, both domestically and internationally, is typically pneumatic ejection. During launch, the pylon stores approximately 30 MPa of compressed air or nitrogen. After unlocking the suspension hooks on the pylon, the actuation device is activated to eject the launcher from the launch pad.

[0003] Pneumatic ejection systems are widely used both domestically and internationally due to their advantages such as fast response speed, lightweight pneumatic components, and no energy consumption from the main unit. However, the storage of high-pressure gas within the launcher and the actions of unlocking before ejection require a pneumatic power source. Achieving timing control for unlocking before ejection and controlling the high-flow-rate air path required for launch significantly increases the complexity of the pneumatic power source. Limited by load capacity, space, and load requirements, achieving these functions within a confined space necessitates a high degree of integration in the pneumatic power source.

[0004] To address this, we designed an integrated pilot gas source device. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention discloses an integrated pilot gas source device.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] An integrated pilot gas source device includes a gas cylinder and a valve body with a gas passage interface. Both ends of the valve body are sealed and connected to the gas cylinder. One side of the valve body has an inflation valve corresponding to and communicating with the gas cylinder to facilitate inflation into the cylinder's inner cavity. One end of the valve body has a mounting cavity, in which a solenoid valve is fixedly mounted. The solenoid valve is located in the gas cylinder's inner cavity on the same side. The valve body also has an electrical connector electrically connected to the solenoid valve. The other end of the valve body has a main valve cavity, the middle of which corresponds to and communicates with the gas passage interface. The main valve cavity has a main valve core structure capable of blocking communication between the gas passage interface and the main valve cavity. A secondary valve cavity, corresponding to and communicating with the inner end of the main valve cavity, is located on the side of the valve body. The secondary valve cavity has a secondary valve core structure. The side of the valve body also has an actuation cavity, perpendicular to and communicating with the secondary valve cavity. The inner end of the actuation cavity is corresponding to and communicates with the mounting cavity. The actuation cavity has an actuating piston capable of moving along its axial direction. The actuating piston has a conical portion that presses against the secondary valve core structure to facilitate opening the secondary valve core structure.

[0008] Preferably, the main valve core structure includes a main valve core that is axially sealed and slidably fitted in the main valve cavity, a main valve core spring that elastically compresses the main valve core is provided at the inner end of the main valve cavity, and a sealing joint that can seal with the main valve core at the outer end of the main valve cavity to block the connection between the main valve cavity and the air passage interface; wherein, the main valve core is provided with a vent hole that connects the outer end and the inner end of the main valve cavity.

[0009] Preferably, the outer end of the actuation chamber is provided with an actuation piston plug to prevent the actuation piston from dislodging.

[0010] Preferably, the secondary valve core structure includes a sealing seat, a secondary valve core, and a secondary valve core spring disposed within the secondary valve cavity; the secondary valve cavity is located on the side of the sealing seat opposite to the actuation cavity and is correspondingly connected to the inner end of the main valve cavity; the inner end of the secondary valve core passes through the sealing seat and extends into the actuation cavity; the secondary valve cavity is provided with a secondary valve core spring at the position corresponding to the outer end of the secondary valve core for elastically squeezing the secondary valve core to facilitate the sealing cooperation between the secondary valve core and the sealing seat.

[0011] Preferably, the secondary valve core is axially slidably fitted into the secondary valve cavity, and a sealing structure is provided at the outer end of the secondary valve cavity, with the secondary valve core spring provided between the sealing structure and the secondary valve core.

[0012] Preferably, the secondary valve core is located at the sealing seat in a conical shape, with the inner end of the conical shape being a small end.

[0013] Preferably, the inner end of the secondary valve core is provided with a transmission component that can move along the axial clearance of the secondary valve cavity, and the inner end of the transmission component extends into the actuation cavity.

[0014] Preferably, the inner end of the transmission component has a rounded top.

[0015] Preferably, the cone angle of the tapered portion is 20 to 30 degrees.

[0016] By employing the technical solution described above, the present invention has the following beneficial effects:

[0017] 1. The solenoid valve is opened via the electrical connector. The gas in the cylinder enters the actuation chamber through the solenoid valve and the mounting chamber. The gas pressure in the actuation chamber increases, pushing the actuation piston outward to complete the unlocking. During or after this process, the conical part of the actuation piston presses against the secondary valve core structure, opening the secondary valve core structure. At this time, the gas pressure in the secondary valve chamber decreases, and the gas in the main valve chamber enters the secondary valve chamber and is also discharged. The main valve core structure opens, and the gas in the cylinder enters the gas circuit interface through the main valve chamber to complete the ejection operation. This realizes the timing control of unlocking before ejection and the function of controlling the flow rate of a large flow rate with a small flow rate.

[0018] 2. This invention can control the high-pressure gas to push the actuating piston by using the solenoid valve embedded in the gas cylinder to control the release in a limited space, thereby achieving the timing control of unlocking and ejection, and using the pilot structure of the main and auxiliary valve cores to achieve the purpose of controlling the flow rate of a large flow through a small flow.

[0019] 3. The valve control system and gas storage device are highly integrated through the valve body, saving mounting space;

[0020] 4. The opening and closing action between the actuating piston and the secondary valve core is transmitted through a transmission component, which enhances safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 AA section view in the middle;

[0023] Figure 3 for Figure 1 BB section view in the middle;

[0024] Figure 4 for Figure 1 CC section view in the middle;

[0025] Figure 5 for Figure 1 DD section view in the middle;

[0026] Figure 6 This is a partial structural diagram of the present invention without using the orientation.

[0027] Figure 7 This is another partial structural diagram of the present invention without using the posture;

[0028] Figure 8 for Figure 7 Enlarged view of part I in the middle;

[0029] Figure 9 This is a partial structural diagram of the present invention in its usage posture;

[0030] Figure 10 This is another partial structural diagram of the present invention in its usage posture;

[0031] Figure 11 for Figure 10 Enlarged view of part II.

[0032] In the diagram: 1. Gas cylinder; 2. Solenoid valve for dispensing; 3. Main valve core spring; 4. Main valve core; 5. Sealing joint; 6. Valve body; 7. Transmission component; 8. Sealing seat; 9. Secondary valve core; 10. Secondary valve core spring; 11. Actuating piston; 12. Actuating piston plug; 13. Electrical connector; 14. Inflation valve. Detailed Implementation

[0033] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0034] Example 1, in conjunction with Appendix Figure 1-11 An integrated pilot gas source device includes a gas cylinder 1 and a valve body 6 with a gas passage interface. Both ends of the valve body 6 are sealed and connected to the gas cylinder 1. One side of the valve body 6 has an inflation valve 14 corresponding to and communicating with the gas cylinder 1, facilitating inflation into the gas cylinder 1. One end of the valve body 6 has a mounting cavity, in which a dispensing solenoid valve 2 is fixedly mounted. The dispensing solenoid valve 2 is located within the gas cylinder 1 on the same side. The valve body 6 also has an electrical connector 13 electrically connected to the dispensing solenoid valve 2. The other end of the valve body 6 has a main valve whose central portion is connected to the gas passage interface. The valve body 6 has a main valve chamber, which is equipped with a main valve core structure that can block the air passage interface from communicating with the main valve chamber; the valve body 6 has a secondary valve chamber on its side that is connected to the inner end of the main valve chamber, and the secondary valve chamber is equipped with a secondary valve core structure; the valve body 6 also has an actuation chamber that is perpendicular to and connected to the secondary valve chamber, and the inner end of the actuation chamber is connected to the mounting chamber. The actuation chamber is equipped with an actuation piston 11 that can move along its axial direction, and the actuation piston 11 has a tapered part that presses against the secondary valve core structure so that the secondary valve core structure can be opened; as needed, the cone angle of the tapered part is 20 to 30 degrees.

[0035] Furthermore, an actuation piston plug 12 is provided at the outer end of the actuation chamber to prevent the actuation piston 11 from dislodging.

[0036] As required, electrical connector 13 is a glass sintered electrical connector.

[0037] Before use, connect the air supply interface to the air source system of the catapult and connect the electrical connector 13 to the electrical control system of the catapult.

[0038] Specifically, the valve body 6 has a gas passage that connects the two gas cylinders 1.

[0039] When inflating, such as Figure 3 As shown, the inflation valve 14 is connected to the inflation equipment. When the inflation valve 14 is opened, the compressed air or nitrogen supplied by the inflation equipment enters the gas cylinder 1 through the inflation valve 14.

[0040] In idle state, that is, in the state of not using, such as Figure 6-8As shown, since the main valve core structure and the auxiliary valve core structure are in a closed position, the pressurized gas in cylinder 1 will not enter the gas circuit interface from the main valve chamber.

[0041] When using, such as Figure 9-11 As shown, the solenoid valve 2 is opened via the electrical connector 13. The gas in the gas cylinder 1 enters the actuation chamber through the solenoid valve 2 and the mounting chamber. The gas pressure at the end of the actuation chamber increases, pushing the actuation piston 11 to move outward, completing the unlocking process. During or after this process, the conical part of the actuation piston 11 presses against the secondary valve core structure, opening the secondary valve core structure. At this time, the gas pressure in the secondary valve chamber decreases, and the gas in the main valve chamber enters the secondary valve chamber and is also discharged. The main valve core structure opens, and the gas in the gas cylinder 1 enters the gas circuit interface through the main valve chamber to complete the ejection operation. This realizes the timing control of unlocking before ejection and the function of controlling the flow rate of a large flow rate with a small flow rate.

[0042] In one embodiment, the main valve core structure includes a main valve core 4 that is axially and slidably fitted in the main valve cavity. The inner end of the main valve cavity is provided with a main valve core spring 3 that elastically compresses the main valve core 4. The outer end of the main valve cavity is provided with a sealing connector 5 that can seal with the main valve core 4 to block the connection between the main valve cavity and the air passage interface. The main valve core 4 is provided with a vent hole that connects the outer end and the inner end of the main valve cavity.

[0043] Specifically, sealing joint 5 is an annular component fixed to the main valve cavity;

[0044] This setting, such as Figure 9-11 As shown, the main valve core spring 3 can pre-tighten the main valve core 4, ensuring that the main valve core 4 and the sealing joint 5 are in a sealed state before inflation. After inflation, the gas in the gas cylinder 1 enters the inner end of the main valve cavity through the vent hole. At this time, the gas pressure on both ends of the main valve core 4 is the same, but the inner end face of the main valve core 4 has a larger contact area with the gas compared to the outer end face. Therefore, the main valve core 4 and the sealing joint 5 are in a sealed state. During use, the solenoid valve 2 is opened via the electrical connector 13, and the gas in the gas cylinder 1 passes through the solenoid valve 2. Valve 2 and the mounting chamber enter the actuation chamber. The air pressure at the end of the actuation chamber increases, pushing the actuation piston 11 to move outward, completing the unlocking result. During this process or subsequently, the conical part of the actuation piston 11 presses against the secondary valve core structure, opening the secondary valve core structure. At this time, the air pressure in the secondary valve chamber decreases, and the gas at the end of the main valve chamber enters the secondary valve chamber and is also discharged. At this time, the air pressure on the outer end face of the main valve core 4 is greater, and the main valve core 4 moves against the main valve core spring 3. At this time, the main valve chamber is connected to the air circuit interface, and the gas cylinder 1 is connected to the air circuit interface, completing the ejection operation.

[0045] In one embodiment, the secondary valve core structure includes a sealing seat 8, a secondary valve core 9, and a secondary valve core spring 10 disposed in the secondary valve cavity; the secondary valve cavity is located on the side of the sealing seat 8 opposite to the actuation cavity and is connected to the inner end of the main valve cavity; the inner end of the secondary valve core 9 passes through the sealing seat 8 and extends into the actuation cavity; the secondary valve cavity is provided with a secondary valve core spring 10 at the position corresponding to the outer end of the secondary valve core 9 for elastically squeezing the secondary valve core 9 so as to facilitate the sealing cooperation between the secondary valve core 9 and the sealing seat 8.

[0046] Specifically, the auxiliary valve core 9 is located at the sealing seat 8 and is a tapered part, with the inner end of the tapered part being the small end.

[0047] Furthermore, the secondary valve core 9 is axially slidingly fitted into the secondary valve cavity, and a sealing structure is provided at the outer end of the secondary valve cavity. A secondary valve core spring 10 is provided between the sealing structure and the secondary valve core 9.

[0048] Furthermore, the inner end of the secondary valve core 9 is provided with a transmission component 7 that can move along the axial clearance of the secondary valve cavity, and the inner end of the transmission component 7 extends into the actuation cavity.

[0049] As required, the inner end of the transmission component 7 is rounded.

[0050] This setting, such as Figure 9-11 As shown, when the actuating piston 11 moves outward, its conical part presses against the transmission component 7. The transmission component 7 drives the secondary valve core 9 to move, so that the secondary valve core 9 and the sealing seat 8 are no longer sealed. At this time, the gas in the secondary valve chamber enters the actuating chamber through the sealing seat 8 and then is discharged. Subsequently, the gas in the main valve chamber enters the secondary valve chamber and is also discharged. At this time, the main valve core 4 opens, so that the main valve chamber is connected to the gas line interface, and the gas cylinder 1 is connected to the gas line interface to complete the ejection operation.

[0051] As needed, the above-mentioned sealing fit can be achieved by setting a sealing ring.

[0052] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents within this invention.

Claims

1. An integrated pilot gas source device, characterized in that, The system includes a gas cylinder (1) and a valve body (6) with a gas passage interface. Both ends of the valve body (6) are sealed and connected to the gas cylinder (1). One side of the valve body (6) has an inflation valve (14) corresponding to and communicating with the gas cylinder (1) to facilitate inflation into the gas cylinder (1). One end of the valve body (6) has an installation cavity, in which a solenoid valve (2) is fixedly installed. The solenoid valve (2) is located in the gas cylinder (1) cavity on the same side. The valve body (6) also has an electrical connector (13) electrically connected to the solenoid valve (2). The other end of the valve body (6) has a main valve cavity whose middle part is connected to the gas passage interface. The main valve cavity has a main valve core structure capable of blocking the communication between the gas passage interface and the main valve cavity. The side of the valve body (6) has a secondary valve cavity corresponding to and communicating with the inner end of the main valve cavity. The secondary valve cavity has a secondary valve core structure. The side of the valve body (6) also has a valve core structure perpendicular to and communicating with the secondary valve cavity. The actuating chamber is connected to the mounting chamber. The actuating chamber is provided with an actuating piston (11) that can move along its axial direction. The actuating piston (11) has a top-pressing sub-valve core structure to facilitate the opening of the sub-valve core structure. The sub-valve core structure includes a sealing seat (8), a sub-valve core (9), and a sub-valve core spring (10) located in the sub-valve chamber. The sub-valve chamber is connected to the inner end of the main valve chamber on the side of the sealing seat (8) away from the actuating chamber. The inner end of the sub-valve core (9) passes through the sealing seat (8) and extends into the actuating chamber. The inner end of the sub-valve core (9) is provided with a transmission member (7) that can move along the axial clearance of the sub-valve chamber. The inner end of the transmission member (7) extends into the actuating chamber. The sub-valve chamber is provided with a sub-valve core spring (10) at the position corresponding to the outer end of the sub-valve core (9) for elastically squeezing the sub-valve core (9) to facilitate the sealing cooperation between the sub-valve core (9) and the sealing seat (8).

2. The integrated pilot gas source device according to claim 1, characterized in that: The main valve core structure includes a main valve core (4) that is axially sealed and slidably fitted in the main valve cavity. The inner end of the main valve cavity is provided with a main valve core spring (3) that elastically compresses the main valve core (4). The outer end of the main valve cavity is provided with a sealing joint (5) that can seal with the main valve core (4) to block the connection between the main valve cavity and the air passage interface. The main valve core (4) is provided with a small vent hole that connects the outer end and the inner end of the main valve cavity.

3. The integrated pilot gas source device according to claim 1, characterized in that: The outer end of the actuation chamber is provided with an actuation piston plug (12) to prevent the actuation piston (11) from falling out.

4. The integrated pilot gas source device according to claim 1, characterized in that: The secondary valve core (9) is axially slidably fitted into the secondary valve cavity, and a sealing structure is provided at the outer end of the secondary valve cavity. The secondary valve core spring (10) is provided between the sealing structure and the secondary valve core (9).

5. An integrated pilot gas source device according to claim 1, characterized in that: The secondary valve core (9) is located at the sealing seat (8) in a conical shape, with the inner end of the conical part being the small end.

6. An integrated pilot gas source device according to claim 1, characterized in that: The inner end of the transmission component (7) is rounded.

7. An integrated pilot gas source device according to claim 1, characterized in that: The cone angle of the tapered part is 20 to 30 degrees.

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