Detector gas film protection push-out device

Abstract

The invention relates to a detector air film protection push-out device in the technical field of flyer detection, which comprises a pneumatic push-out assembly, the pneumatic push-out assembly comprises an inner cylinder and an outer cylinder, an annular cover is fixed at the rear end of a clamping cavity between the outer cylinder and the inner cylinder, an outer piston cylinder is inserted in the front part of the clamping cavity, and an inner piston cylinder is inserted in the inner wall of the inner cylinder; the front end of the inner piston cylinder is fixed with the front end of the outer piston cylinder, the outer wall of the rear end of the outer piston cylinder is provided with a slot, the outer wall of the rear end of the outer cylinder is provided with an insertion hole, and the clamping cavity is provided with a throttling hole; an air film nozzle and a pressure reducing valve assembly are respectively mounted at two ends of the inner barrel; a gas cylinder assembly is installed outside the pneumatic push-out assembly and provided with a control valve, and the control valve is correspondingly communicated with the throttling hole. A pneumatic unlocking one-way valve is installed on the air pipe, a valve element of the pneumatic unlocking one-way valve is connected with an exposed pin shaft, and the outer end of the pin shaft is inserted into the inserting hole and the inserting groove in a matched mode. The gas film protection push-out device can be safely and stably pushed out for gas film protection only when a detector is needed for detection.

Description

Technical Field

[0001] The invention relates to the technical field of flying object detection, and in particular to a detector air film protection ejection device. Background Art

[0002] When guiding a flying object to fly at supersonic speed, the detector on the flying object cannot achieve effective detection due to air friction. However, this technology is still in an opaque blank state at home and abroad. In order to solve this problem, a device that uses high-speed gas output to form an air film to protect the detector has been designed, and the protection device is required to meet the safety, stability and high-speed requirements of the flying object. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the present invention discloses a detector air film protection ejection device, which can safely and stably eject the detector for air film protection only when the detector is needed for detection.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A detector air film protection ejection device comprises a pneumatic ejection component, the pneumatic ejection component comprises an inner cylinder and an outer cylinder, the outer cylinder is coaxially sleeved outside the inner cylinder and forms a clamping cavity between the inner cylinder, the rear end of the clamping cavity is sealed and fixed with a ring cover, the front part of the clamping cavity is slidingly and sealingly inserted with an outer piston cylinder, the outer piston cylinder is provided with a first limiting structure for preventing sliding away from the outer cylinder, the inner wall of the inner cylinder is slidingly and sealingly inserted with an inner piston cylinder, the front end outer wall of the inner piston cylinder is sealed and fixed with the front end inner wall of the outer piston cylinder, the rear end outer wall of the outer piston cylinder is provided with a slot, the rear end outer wall of the outer cylinder is provided with a socket corresponding to the slot, and the socket and A throttling hole is provided on the wall of the clamping cavity in the corresponding state of the slot; an air film nozzle and a pressure reducing valve assembly are installed respectively on the front port and the rear port of the inner cylinder; a gas cylinder assembly is installed on the outside of one side of the pneumatic ejection assembly, and the gas cylinder assembly includes a bottle body, and a control valve is installed at the air outlet of the bottle body, and the outlet of the control valve is connected with the throttling hole through an air pipe; a pneumatic unlocking one-way valve is installed on the air pipe, which can drive the valve core to move to guide the air pipe in one direction by the air outlet of the bottle body, and the valve core of the pneumatic unlocking one-way valve is connected with an exposed pin shaft, and the outer end of the pin shaft is adapted to be inserted into the jack and the slot, and can be pulled out and plugged in following the movement of the valve core during the air pipe guiding process.

[0006] Furthermore, the pneumatic unlocking one-way valve includes a one-way valve body for conducting the axial movement of the valve core to control the gas inlet and outlet of the side wall. A reset spring and a card limit mechanism for preventing the valve core from resetting are installed at one end of the valve core. The pin shaft is installed at the other end of the valve core and slides and seals through the one-way valve body.

[0007] Furthermore, the front end outer wall of the inner piston cylinder is provided with a second limiting structure for contacting the front end surface of the inner cylinder body, and when the second limiting structure contacts, the insertion hole and the slot correspond to each other.

[0008] Furthermore, the front end inner wall of the outer cylinder body and the rear end outer wall of the outer piston cylinder are integrally provided with ring platforms that can hook each other to form a first limiting structure, and the wall surface of the ring platform is provided with a first sealing ring groove for accommodating a sealing ring, and a buffer gasket is provided between the two ring platforms.

[0009] Furthermore, a second sealing ring groove for accommodating a sealing ring is provided on the inner wall at the rear end of the outer piston cylinder, and a weight-reducing ring groove is provided on the inner wall of the outer piston cylinder between the second sealing ring groove and the inner piston cylinder.

[0010] Furthermore, a third sealing ring groove for accommodating a sealing ring is provided on the outer wall of the rear end of the inner piston cylinder.

[0011] Furthermore, the inner wall of the ring cover is sealed and fixed to the outer wall of the inner cylinder, and the outer wall of the ring cover is correspondingly threadedly connected to the inner wall of the outer cylinder.

[0012] Furthermore, the pressure reducing valve assembly includes a pressure reducing valve body, which has an air inlet and an air outlet connected to the inner cylinder at both ends, and an input safety valve and an output safety valve corresponding to the air inlet and the air outlet respectively, as well as a pilot pressure reducer and a main pressure reducer for controlling the pressure reduction are installed in the middle of the pressure reducing valve body.

[0013] Furthermore, one end of the bottle body is set as an inflation end, and the control valve is set as an electric explosion valve.

[0014] Furthermore, the gas cylinder assembly and the pneumatic unlocking one-way valve are respectively installed on both sides of the pneumatic ejection assembly.

[0015] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects:

[0016] The detector air film protection ejection device disclosed in the present invention can utilize a pressure reducing valve assembly, an inner cylinder, an inner piston cylinder and an air film nozzle to sequentially regulate the pressure, guide and eject high-speed gas introduced from the outside, thereby forming a protective air film corresponding to the detector, thereby ensuring the effectiveness of the detector detection when the flying object is flying at high speed; more importantly, by arranging a pneumatic ejection assembly, the air film nozzle is pushed out for use only when the detector is needed for detection, thereby ensuring the concealment before use, and the ejection moving structure is also very flexible and stable, and the gas cylinder assembly and the pneumatic unlocking one-way valve ensure the safety of the pneumatic unlocking control ejection; in summary, the present invention has a compact structure and a reasonable layout, and while achieving the air film ejection protection effect, it fully meets the safety, stability and high-speed requirements of the flying object. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the implementation structure of the present invention;

[0018] Figure 2 is a schematic cross-sectional structural diagram of the pneumatic ejection assembly;

[0019] Figure 3 is a schematic structural diagram of the gas cylinder assembly;

[0020] Figure 4 is a structural schematic diagram of the pneumatic unlocking one-way valve;

[0021] Figure 5 Schematic diagram of the structure of the pressure reducing valve assembly.

[0022] In the figure: 1. pressure reducing valve assembly; 101. pilot pressure reducer; 102. main pressure reducer; 103. pressure reducing valve body; 104. output safety valve; 105. input safety valve; 2. air pipe; 3. gas cylinder assembly; 301. charging end; 302. control valve; 303. cylinder body; 4. pneumatic ejection assembly; 401. outer cylinder body; 402. outer piston cylinder; 403. inner cylinder body; 404. inner piston cylinder; 405. first sealing ring groove; 406. second sealing ring groove; 407. throttle hole; 408. ring cover; 409. clamping chamber; 410. third sealing ring groove; 411. slot; 412. jack; 413. buffer gasket; 414. air film nozzle; 5. pneumatic unlocking one-way valve; 501. one-way valve body; 502. pin shaft; 503. card plate limiting mechanism. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction:

[0024] Combined with Figure 1-5 The detector air film protection ejection device comprises a pneumatic ejection assembly 4, which comprises an inner cylinder 403 and an outer cylinder 401. The outer cylinder 401 is coaxially sleeved outside the inner cylinder 403 and forms a clamping cavity 409 between the inner cylinder 403. The clamping cavity 409 corresponds to an annular cavity. A ring cover 408 is fixed to the rear end of the clamping cavity 409. The ring cover 408 has a sealing function and can also support the distance between the inner cylinder 403 and the outer cylinder 401. According to needs, the inner wall of the ring cover 408 is sealed and fixed to the outer wall of the inner cylinder 403, or it can be integrally connected. The outer wall of the ring cover 408 is correspondingly threadedly connected to the inner wall of the outer cylinder 401, which ensures sealing and is easy to disassemble and assemble.

[0025] The outer piston cylinder 402 is inserted into the front part of the clamping cavity 409 in a sliding seal, that is, the outer piston cylinder 402 is slidably sealed with the outer wall of the inner cylinder 403 and the inner wall of the outer cylinder 401, and the outer piston cylinder 402 is provided with a first limiting structure for preventing it from sliding toward the front end and detaching from the outer cylinder 401; according to needs, the front end inner wall of the outer cylinder 401 and the rear end outer wall of the outer piston cylinder 402 are both integrally provided with ring platforms that can hook each other to form a first limiting structure, and the wall surface of the ring platform is provided with a first sealing ring groove 405 for accommodating a sealing ring, and a double-layer sealing effect is achieved by the sealing ring in the first sealing ring groove 405, and the two ring platforms A buffer gasket 413 is provided between the outer piston cylinder 402 and the inner piston cylinder 404. The buffer gasket 413 can not only increase the sealing effect, but also play a buffering effect when the outer piston cylinder 402 slides toward the front end and is about to collide with the front end ring of the outer cylinder body 401; in addition, the inner wall at the rear end of the outer piston cylinder 402 is provided with a second sealing ring groove 406 for accommodating a sealing ring, and the sealing ring in the second sealing ring groove 406 is used to achieve a sliding sealing effect, and a weight-reducing ring groove is provided on the inner wall of the outer piston cylinder 402 connected to the inner piston cylinder 404, mainly by digging a groove to reduce the weight of the outer piston cylinder 402; the inner wall of the inner cylinder body 403 is provided with a second sealing ring groove 406 for accommodating a sealing ring, and the sealing ring in the second sealing ring groove 406 is used to achieve a sliding sealing effect, and a weight-reducing ring groove is provided on the inner wall of the outer piston cylinder 402 connected to the inner piston cylinder 404, mainly by digging a groove to reduce the weight of the outer piston cylinder 402; The sliding seal is inserted with an inner piston cylinder 404, and the rear end outer wall of the inner piston cylinder 404 is provided with a third sealing ring groove 410 for accommodating a sealing ring, and the sliding sealing effect is achieved by the sealing ring in the third sealing ring groove 410, and the front end outer wall of the inner piston cylinder 404 is sealed and fixed with the front end inner wall of the outer piston cylinder 402, and can also be set as a threaded connection, which ensures the sealing effect and is convenient for disassembly and assembly; the rear end outer wall of the outer piston cylinder 402 is provided with a slot 411, and the rear end outer wall of the outer cylinder body 401 is provided with a socket 412 that can correspond to the slot 411, and the wall of the clamping cavity 409 in the corresponding state of the socket 412 and the slot 411 is set There is a throttling hole 407, which is convenient for air to enter the clamping chamber 409 through the throttling hole 407, and then it can push the outer piston cylinder 402 and the inner piston cylinder 404 to move together; as needed, the front end outer wall of the inner piston cylinder 404 is provided with a second limiting structure for abutting against the front end face of the inner cylinder body 403, and when the second limiting structure abuts, the plug hole 412 and the slot 411 correspond to each other, and the second limiting structure is generally a ring convexity formed by the convexity of the front end outer wall of the inner piston cylinder 404. The second limiting structure abuts to ensure that there is always space in the clamping chamber 409, and the plug hole 412 and the slot 411 can have a corresponding reference.

[0026] The front port and the rear port of the inner cylinder 403 are respectively installed with an air film nozzle 414 and a pressure reducing valve assembly 1. The pressure reducing valve assembly 1, the inner cylinder 403, the inner piston cylinder 404 and the air film nozzle 414 are used to sequentially regulate the pressure, guide and eject the high-speed gas introduced from the outside, thereby forming a protective air film for the corresponding detector to ensure the effectiveness of the detector detection when the flying object is flying at high speed. The air outlet of the air film nozzle 414 can be set to a flat shape according to the needs of use; according to the needs, the pressure reducing valve assembly 1 includes a pressure reducing valve body 103, and the pressure reducing valve body 103 has two An air inlet and an air outlet connected to the inner cylinder 403 are provided at the end of the pressure reducing valve body 103. An input safety valve 105 and an output safety valve 104 corresponding to the air inlet and the air outlet are installed in the middle of the pressure reducing valve body 103, as well as a pilot pressure reducer 101 and a main pressure reducer 102 for controlling the pressure reduction. The external high-speed gas needs to be reduced in pressure by controlling the main pressure reducer 102 through the pilot pressure reducer 101, and the input safety valve 105 is opened when the input pressure of the air inlet of the pressure reducing valve body 103 is too high, and the output safety valve 104 is opened when the output pressure of the air outlet is too high, thereby ensuring safety.

[0027] A gas cylinder assembly 3 is installed on the outside of one side of the pneumatic ejection assembly 4. The gas cylinder assembly 3 includes a bottle body 303. A control valve 302 is installed at the gas outlet of the bottle body 303. One end of the bottle body 303 is set as an inflation end 301, which is convenient for inflating gas into the bottle body 303. The control valve 302 is set as an electric explosion valve. The outlet of the control valve 302 is connected to the throttle hole 407 through the air pipe 2. After the control valve 302 is opened by electric control, the gas in the bottle body 303 can enter the clamping cavity 409 through the air pipe 2 and the throttle hole 407.

[0028] The air pipe 2 is provided with a pneumatic unlocking one-way valve 5 which can be driven by the valve core to move to guide the air pipe 2 in a one-way manner by the gas discharged from the bottle body 303. The gas cylinder assembly 3 and the pneumatic unlocking one-way valve 5 are respectively installed on both sides of the pneumatic pushing assembly 4, making the structure more compact and balanced; the valve core of the pneumatic unlocking one-way valve 5 is connected with an exposed pin shaft 502, and the outer end of the pin shaft 502 is adapted to be inserted in the plug hole 412 and the slot 411, and can be pulled out and inserted along with the movement of the valve core during the guiding of the air pipe 2, ensuring that before the control valve 302 is opened to release the pushing gas, the pin shaft 502 is inserted in the plug hole 412 and the slot 411 to position and fix the outer piston cylinder 402 and the inner piston cylinder 404 to prevent movement and slippage, and only when the air pipe 2 is inhaled and the pin shaft 502 is pulled out and inserted, the pneumatic unlocking one-way valve 5 can be guided in a one-way manner, and then the outer piston cylinder 402 and the inner piston cylinder 404 can be pushed out by the gas. The plug cylinder 402 and the inner piston cylinder 404 meet the safety requirements of the push-out control; as needed, the pneumatic unlocking one-way valve 5 includes a one-way valve body 501 for axial movement and connection of the side wall inlet and outlet gas control valve 302 core, one end of the valve core is equipped with a reset spring and a card plate limiting mechanism 503 for preventing the valve core from resetting, and the pin shaft 502 is installed at the other end of the valve core and slides and seals through the one-way valve body 501. When the valve core moves, the pin shaft 502 is pulled out and the side wall inlet and outlet of the one-way valve body 501 are connected, the card plate limiting mechanism 503 can automatically clamp the valve core to prevent the valve core from resetting and cutting off the flow when the air pressure of the conducted air flow is unstable. The more specific structure and working principle of the pneumatic unlocking one-way valve 5 have been disclosed by the applicant separately in the invention patent with announcement number CN117553044A, which will not be repeated here.

[0029] When implementing the detector air film protection ejection device described in the present invention, when it is necessary to use the detector of the flying object, first control to open the control valve 302, and the high-pressure gas in the bottle body 303 enters the side wall air inlet of the pneumatic unlocking one-way valve 5 through the air pipe 2, and then pushes the valve core to move axially upward. During the movement, the pin shaft 502 moves and is pulled out synchronously, so that the outer piston cylinder 402 and the outer cylinder body 401 are disengaged from the position. After the valve core moves axially into place, not only the side wall air inlet and outlet of the one-way valve body 501 are connected, but the valve core itself is also stuck by the clamping plate limit mechanism 503 and cannot be reset. The high-pressure gas can thus stably and smoothly pass through the throttle hole 407 into the clamping cavity 409, and then push the outer piston cylinder 402 and the inner piston cylinder 404 to move toward the front end to push out the air film nozzle 414. At this time, the high-speed gas introduced from the outside passes through the pressure reducing valve assembly 1, the inner cylinder body 403, the inner piston cylinder 404 and the air film nozzle 414 in turn to adjust the pressure, guide the flow and eject, thereby forming a protective air film for the corresponding detector.

[0030] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A detector air film protection ejection device, characterized by: The pneumatic ejection assembly (4) comprises an inner cylinder (403) and an outer cylinder (401), wherein the outer cylinder (401) is coaxially sleeved outside the inner cylinder (403) and forms a clamping chamber (409) with the inner cylinder (403), a ring cover (408) is fixedly sealed at the rear end of the clamping chamber (409), an outer piston cylinder (402) is inserted in a sliding seal at the front of the clamping chamber (409), and the outer piston cylinder (402) is provided with a The first limiting structure is used to prevent the outer cylinder (401) from sliding off, the inner cylinder (403) is slidably and sealably inserted with an inner piston cylinder (404), the front end outer wall of the inner piston cylinder (404) is sealed and fixed with the front end inner wall of the outer piston cylinder (402), the rear end outer wall of the outer piston cylinder (402) is provided with a slot (411), the rear end outer wall of the outer cylinder (401) is provided with a plug hole (412) that can correspond to the slot (411), and the plug hole (412) and the plug hole (412) are connected to each other. A throttling hole (407) is provided on the wall of the clamping cavity (409) in a state corresponding to the groove (411); a front port and a rear port of the inner cylinder (403) are respectively installed with an air film nozzle (414) and a pressure reducing valve assembly (1); a gas cylinder assembly (3) is installed on the outside of one side of the pneumatic ejection assembly (4), and the gas cylinder assembly (3) includes a bottle body (303), and a control valve (302) is installed at the gas outlet of the bottle body (303), and the outlet of the control valve (302) is connected to the outlet of the control valve (302). The air pipe (2) is correspondingly connected to the throttle hole (407); the air pipe (2) is provided with a pneumatic unlocking one-way valve (5) capable of being driven by the gas discharged from the bottle body (303) to move the valve core to guide the air pipe (2) in a one-way manner; the valve core of the pneumatic unlocking one-way valve (5) is connected to an exposed pin shaft (502); the outer end of the pin shaft (502) is adapted to be inserted into the plug hole (412) and the slot (411), and can be inserted and removed following the movement of the valve core during the process of guiding the air pipe (2).

2. The detector air film protection ejection device according to claim 1 is characterized in that: The pneumatic unlocking one-way valve (5) comprises a one-way valve body (501) for axially moving and conducting the core of the side wall inlet and outlet gas control valve (302), a return spring and a clamping plate limit mechanism (503) for preventing the valve core from returning to its original position are installed at one end of the valve core, and the pin shaft (502) is installed at the other end of the valve core and slides and seals through the one-way valve body (501).

3. The detector air film protection ejection device according to claim 1 is characterized in that: The front end outer wall of the inner piston cylinder (404) is provided with a second limiting structure for contacting the front end surface of the inner cylinder body (403), and when the second limiting structure contacts, the insertion hole (412) and the insertion slot (411) correspond to each other.

4. The detector air film protection ejection device according to claim 1 is characterized in that: The front end inner wall of the outer cylinder (401) and the rear end outer wall of the outer piston cylinder (402) are both integrally provided with ring platforms that can be hooked with each other to form a first limiting structure, and the wall surface of the ring platform is provided with a first sealing ring groove (405) for accommodating a sealing ring, and a buffer gasket (413) is provided between the two ring platforms.

5. The detector air film protection ejection device according to claim 1 is characterized in that: The rear end inner wall of the outer piston cylinder (402) is provided with a second sealing ring groove (406) for accommodating a sealing ring, and a weight-reducing ring groove is provided on the inner wall of the outer piston cylinder (402) between the second sealing ring groove (406) and the inner piston cylinder (404).

6. The detector air film protection ejection device according to claim 1 is characterized in that: A third sealing ring groove (410) for accommodating a sealing ring is provided on the rear end outer wall of the inner piston cylinder (404).

7. The detector air film protection ejection device according to claim 1 is characterized in that: The inner wall of the ring cover (408) is sealed and fixed to the outer wall of the inner cylinder (403), and the outer wall of the ring cover (408) is correspondingly threadedly connected to the inner wall of the outer cylinder (401).

8. The detector air film protection ejection device according to claim 1 is characterized in that: The pressure reducing valve assembly (1) comprises a pressure reducing valve body (103), wherein two ends of the pressure reducing valve body (103) are provided with an air inlet and an air outlet connected to an inner cylinder (403), and an input safety valve (105) and an output safety valve (104) corresponding to the air inlet and the air outlet, respectively, are installed in the middle of the pressure reducing valve body (103), as well as a pilot pressure reducer (101) and a main pressure reducer (102) for controlling pressure reduction.

9. The detector air film protection ejection device according to claim 1 is characterized in that: One end of the bottle body (303) is configured as an inflation end (301), and the control valve (302) is configured as an electric explosion valve.

10. The detector air film protection ejection device according to claim 1 is characterized in that: The gas cylinder assembly (3) and the pneumatic unlocking one-way valve (5) are respectively installed on both sides of the pneumatic ejection assembly (4).

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