Portable oxygen cylinder device

Abstract

The application discloses a portable oxygen cylinder device, which comprises an oxygen cylinder, a joint is arranged at the upper end of the oxygen cylinder, a transverse air channel and a longitudinal air channel which are communicated with each other are arranged in the joint, the front end and the rear end of the transverse air channel are respectively used for mounting an air inlet device and an air outlet device, the upper end of the longitudinal air channel is connected with the transverse air channel, and the lower end of the longitudinal air channel is connected with a high-pressure air cavity in the oxygen cylinder through a pipe joint. The oxygen cylinder device provides spare oxygen for an airplane oxygen system, has the functions of collecting pressure, low pressure and super-low pressure alarm, and is safe and reliable in use.

Description

Technical Field

[0001] This invention pertains to aviation oxygen supply technology, specifically relating to a portable oxygen cylinder device. Background Technology

[0002] The oxygen cylinder unit is directly connected to an oxygen switch at the rear, and the oxygen switch is connected to a pressure gauge at the rear. When the aircraft cabin altitude is between 8km and 12km, the system switches to a backup oxygen source to supply pure oxygen to the pilot, preventing hypoxia and enabling the pilot to complete the flight mission during this period.

[0003] Existing oxygen cylinder devices are not portable and have limited functionality, lacking pressure acquisition and abnormal pressure alarm functions, and can no longer adequately meet the design requirements of current aviation oxygen supply systems. Summary of the Invention

[0004] The purpose of this invention is to provide a convenient oxygen cylinder device that enables unidirectional flow and can collect pressure, low pressure, and ultra-low pressure alarm functions to meet oxygen supply needs within a preset gas pressure range.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] A portable oxygen cylinder device includes an oxygen cylinder; a connector is installed at the upper end of the oxygen cylinder, and the connector has interconnected transverse and longitudinal air passages inside. The front and rear ends of the transverse air passages are used to install an air inlet device and an air outlet device, respectively. The upper end of the longitudinal air passage connects to the transverse air passage, and the lower end of the longitudinal air passage connects to the high-pressure air chamber inside the oxygen cylinder via a nozzle.

[0007] The air intake device includes an air intake nozzle, a first valve gasket, a valve sleeve, a first spring, a bushing, a retaining ring, and a filter screen. The air intake nozzle has externally threaded ends at both its front and rear ends. Its front end is used to connect to an oxygenation device, and its rear end is installed in an internally threaded interface on a connector. An installation cavity is formed at the rear end of the air intake nozzle, and an air intake passage is formed from the front end of the air intake nozzle towards the installation cavity. A bushing is fitted in the installation cavity, with its front end positioned by a step at the front end of the installation cavity. A filter screen and a retaining ring are fitted at the rear end of the bushing. A valve sleeve is fitted inside the bushing, allowing it to slide axially within the bushing; the two are in a clearance fit. A first valve gasket is fitted at the front end of the valve sleeve, and a first spring is installed between the outer rear wall of the valve sleeve and a positioning boss on the inner rear wall of the bushing.

[0008] The air outlet device includes a second valve gasket, a valve sleeve, a second washer, an air outlet nozzle, and a second spring. The rear end of the air outlet nozzle is an internally threaded cap, and the front end is an externally threaded end. The front end is used to connect to the oxygen supply mechanism, and the rear end is installed on the externally threaded interface of the connector. An axially oriented valve cavity is formed inside the externally threaded interface. The second valve gasket is fitted inside the valve cavity with a clearance fit. A second spring is provided between the second valve gasket and the rear end of the valve cavity. An air outlet passage communicating with the valve cavity is formed from the rear end face of the air outlet nozzle inward.

[0009] Furthermore, a pressure sensor is connected to the connector and is connected to the transverse airway to detect the oxygen pressure in the oxygen cylinder.

[0010] Furthermore, the pressure sensor features low / ultra-low pressure alarms, its own BIT function, and communicates via the 429 bus protocol.

[0011] Furthermore, during onboard oxygen filling, the outlet nozzle is connected to an oxygen switch with a pressure gauge, allowing monitoring of the oxygen pressure inside the cylinder by observing the pressure reading on the gauge.

[0012] Furthermore, a first washer is provided in the internal threaded interface for sealing; a second washer is provided in the external threaded interface for sealing.

[0013] Furthermore, the front end of the first door pad is designed as a trapezoidal surface.

[0014] Furthermore, the rear end of the bushing is connected to and coaxially arranged with the front end of the transverse air passage.

[0015] Furthermore, during oxygenation, the oxygen switch connected to the outlet nozzle is in the closed state. High-pressure oxygen from the onboard oxygenation nozzle or the ground oxygenation device flows through the inlet nozzle, overcomes the elastic force of the first spring, opens the first valve pad, and after the oxygen enters the transverse air passage, it enters the oxygen cylinder through the pipe connector. When oxygenation ends, the first valve pad closes under the combined action of the first spring and the internal pressure.

[0016] Oxygen from the oxygen cylinder flows through the orifice of the nozzle into the transverse air passage within the connector. One flow goes to the first valve pad, where the inlet passage is closed by the combined action of the first spring and internal pressure. Another flow overcomes the force of the second spring installed in the valve sleeve, opening the second valve pad and allowing the oxygen to exit through the outlet nozzle. The remaining flow goes to the pressure sensor. By connecting a 15V DC voltage to the pressure sensor, the pressure value inside the oxygen cylinder can be collected in real time, and low-pressure and ultra-low-pressure alarms can be triggered.

[0017] Compared with the prior art, the present invention has the following technical features:

[0018] This invention provides backup oxygen for aircraft oxygen systems and has the functions of collecting pressure, low pressure and ultra-low pressure alarms, and is safe and reliable to use. Attached Figure Description

[0019] Figure 1 This is a structural cross-sectional view of the oxygen cylinder device of the present invention;

[0020] Figure 2 yes Figure 1 Enlarged view of the upper structure of a medium oxygen cylinder;

[0021] Figure 3 This is a top view of the oxygen cylinder device of the present invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Inlet nozzle; 2. First valve gasket; 3. Valve sleeve; 4. First spring; 5. Bushing; 6. Connector; 7. Second valve gasket; 8. Valve sleeve; 9. Second washer; 10. Outlet nozzle; 11. Second spring; 12. Washer; 13. Pipe nozzle; 14. Oxygen cylinder; 15. First washer; 16. Snap ring; 17. Filter screen; 18. Pressure sensor; 19. Longitudinal air passage; 20. Valve cavity; 21. Outlet air passage; 22. External threaded interface; 23. Transverse air passage; 24. Positioning boss; 25. Internal threaded interface; 26. Inlet air passage. Detailed Implementation

[0023] See appendix Figure 1 and Figure 2 This invention provides a portable oxygen cylinder device, including an oxygen cylinder 14; a connector 6 is installed at the upper end of the oxygen cylinder, and a gasket 12 is provided at the installation point for sealing; the connector 6 has a T-shaped transverse air passage 23 and a longitudinal air passage 19 inside, wherein the front end and rear end of the transverse air passage 23 are used to install an air inlet device and an air outlet device, respectively, the upper end of the longitudinal air passage 19 is connected to the transverse air passage 23, and the lower end of the longitudinal air passage 19 is connected to the high-pressure air chamber inside the oxygen cylinder 13 through a pipe connector 13, wherein:

[0024] The air intake device includes an air intake nozzle 1, a first valve gasket 2, a valve sleeve 3, a first spring 4, a bushing 5, a retaining ring 16, and a filter screen 17. The front and rear ends of the air intake nozzle 1 are both externally threaded. The front end is used to connect to an oxygenation device, and the rear end is installed in an internally threaded interface 25 on the connector 6, with a first washer 15 providing a seal in the internally threaded interface 25. An installation cavity is formed at the rear end of the air intake nozzle 1, and an air intake passage 26 is formed at the front end of the air intake nozzle 1 facing the installation cavity. A bushing 5 is installed in the installation cavity, with its front end positioned by a step at the front end of the installation cavity, and a filter screen installed at the rear end of the bushing 5. The mesh 17 and the retaining ring serve to filter polluted gas. The retaining ring is located between the end of the bushing 5 and the end face of the threaded interface. A valve sleeve 3 is installed inside the bushing 5, which can slide axially within the bushing 5 with a clearance fit. A first valve pad 2 is installed at the front end of the valve sleeve 3, and a first spring 4 is installed between the outer wall of the rear end of the valve sleeve 3 and the positioning boss 24 on the inner wall of the rear end of the bushing 5. Under the action of the first spring 4, the first valve pad 2 blocks the rear end of the air inlet 26. The front end of the first valve pad 2 is designed as a trapezoidal surface. The rear end of the bushing 5 is connected to the front end of the transverse air passage 23 and is arranged coaxially. During oxygen filling, after the high-pressure oxygen enters the air inlet 26 in the air inlet nozzle 1, it overcomes the elastic force of the first spring 4 and pushes the first valve pad 2 open from the rear end of the air inlet 26. The gas reaches the rear end of the bushing 5 through the gap between the valve sleeve 3 and the bushing 5, and enters the gas cylinder from the transverse air passage 23 and the longitudinal air passage 19. In the unfilled state, the high-pressure gas in the oxygen cylinder 14 and the first spring 4 work together to push the valve sleeve 4, causing the first valve pad 2 to block the rear end of the air intake duct 26.

[0025] The air outlet device includes a second valve gasket 7, a valve sleeve 8, a second washer 9, an air outlet nozzle 10, and a second spring 11. The rear end of the air outlet nozzle 10 is an internally threaded cap, and the front end is an externally threaded end. Its front end is used to connect to the oxygen supply mechanism (oxygen mask), and its rear end is installed on the externally threaded interface 22 on the connector 6. A second washer 9 is provided on the externally threaded interface 22 for sealing. An axially oriented valve cavity 20 is formed inside the externally threaded interface 22. The second valve gasket 7 is assembled inside the valve cavity 20. The second valve gasket 7 and the valve cavity 20 are clearance-fitted. A second spring 11 is provided between the second valve gasket 7 and the rear end of the valve cavity 20. Under the action of the spring force, the front end of the second valve gasket 7 blocks the rear end of the transverse air passage 23. An air outlet passage 21 communicating with the valve cavity 20 is formed from the rear end face of the air outlet nozzle 10 into it. When oxygen is used, the gas in the oxygen cylinder 14 flows into the transverse air passage 23 of the connector 6 through the pipe nozzle 13, overcoming the elastic force of the second spring 11 to push open the second valve pad 7, and the oxygen flows through the gap between the second valve pad 7 and the valve cavity 20, and is finally supplied to the oxygen-using mechanism from the outlet passage 21.

[0026] To better monitor the pressure inside the oxygen cylinder and promptly detect when the oxygen in the cylinder is depleted, this invention also connects a pressure sensor 18 to connector 6. The pressure sensor 18 is connected to the transverse air passage 23 and is used to detect the oxygen pressure in the oxygen cylinder 14. The pressure is converted accordingly based on the temperature value. At the same time, the pressure sensor 18 has functions such as low pressure / ultra-low pressure alarm and its own BIT, and communicates with the onboard system through the 429 bus protocol.

[0027] In addition, when oxygen is being filled on the machine, the outlet nozzle 10 is connected to an oxygen switch with a pressure gauge. The pressure value of the pressure gauge can be observed to determine whether the oxygen cylinder 18 is filled with 20.6 MPa of oxygen.

[0028] The working principle of this invention is:

[0029] exist Figure 1 In the state shown, during oxygenation, the oxygen switch connected to the outlet nozzle 10 is closed. High-pressure oxygen from the onboard oxygenation nozzle or the ground oxygenation device flows through the inlet nozzle 1, overcoming the elastic force of the first spring 4, and opens the first valve pad 2. After the oxygen enters the transverse air passage 23, it passes through the pipe connector 13 and enters the oxygen cylinder 14. When oxygenation ends, the first valve pad 2 closes under the combined action of the first spring 4 and the internal pressure.

[0030] Oxygen from the oxygen cylinder 14 flows through the orifice of the nozzle 13 into the transverse air passage 23 within the connector 6. One flow leads to the first valve pad 2, where the inlet passage 26 is closed by the combined action of the spring force of the first spring 4 and the internal pressure. Another flow overcomes the spring force of the second spring 11 installed in the valve sleeve 3, opening the second valve pad 7 and allowing the oxygen to flow out through the outlet nozzle 10. The remaining flow leads to the pressure sensor 18. A 15V DC voltage is supplied to the pressure sensor 18, which can collect the pressure value inside the oxygen cylinder in real time and provide low-pressure and ultra-low-pressure alarms.

[0031] Tests have shown that when oxygen is supplied from the oxygen cylinder, the pressure sensor can promptly monitor the oxygen supply, eliminating potential safety hazards, ensuring flight safety, and meeting oxygen supply needs within a gas pressure of 20.6 MPa.

[0032] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A portable oxygen cylinder device, characterized in that, Includes an oxygen cylinder (14); the upper end of the oxygen cylinder (14) is equipped with a connector (6), and the connector (6) has interconnected transverse air passages (23) and longitudinal air passages (19) inside. The front end and rear end of the transverse air passage (23) are used to install an air inlet device and an air outlet device, respectively. The upper end of the longitudinal air passage (19) is connected to the transverse air passage (23), and the lower end of the longitudinal air passage (19) is connected to the high-pressure air chamber inside the oxygen cylinder (14) through a pipe connector (13). The air inlet device includes an air inlet connector (1), a first valve pad (2), a first valve sleeve (3), a first spring (4), a bushing (5), a retaining ring (16), and a filter screen (17). The front end and rear end of the air inlet connector (1) are both externally threaded ends, and its front end is used to connect to the oxygen filling device. The device is installed in the internal threaded interface (25) on the connector (6) at the rear end. The air inlet nozzle (1) has an installation cavity at the rear end. An air inlet passage (26) is opened from the front end of the air inlet nozzle (1) towards the installation cavity. A bushing (5) is installed in the installation cavity. The front end of the bushing (5) is positioned by a step at the front end of the installation cavity. A filter screen (17) and a retaining ring are installed at the rear end of the bushing (5). A first valve sleeve (3) is installed inside the bushing (5). The first valve sleeve (3) can slide axially inside the bushing (5). The two are in clearance fit. A first valve pad (2) is installed at the front end of the first valve sleeve (3). A first spring (4) is installed between the outer wall of the rear end of the first valve sleeve (3) and the positioning boss (24) on the inner wall of the rear end of the bushing (5). The air outlet device includes a second valve pad (7), a second valve sleeve (8), a second washer (9), an air outlet nozzle (10), and a second spring (11); the rear end of the air outlet nozzle (10) is an internal thread cap, and the front end is an external thread end. Its front end is used to connect to the oxygen supply mechanism, and its rear end is installed on the external thread interface (22) on the connector (6); the external thread interface (22) has an axially formed valve cavity (20), and the valve cavity (20) is equipped with a second valve pad (7). The second valve pad (7) is clearance-fitted with the valve cavity (20), and a second spring (11) is provided between the second valve pad (7) and the rear end of the valve cavity (20); an air outlet channel (21) communicating with the valve cavity (20) is formed from the rear end face of the air outlet nozzle (10) towards its interior; A pressure sensor (18) is connected to the connector (6). The pressure sensor (18) is connected to the transverse airway (23) to detect the oxygen pressure in the oxygen cylinder (14). A DC voltage of 15V is connected to the pressure sensor (18) to collect the pressure value in the oxygen cylinder in real time and to realize low pressure and ultra-low pressure alarm.

2. The portable oxygen cylinder device according to claim 1, characterized in that, The pressure sensor (18) has a low pressure / ultra-low pressure alarm, its own BIT function, and communicates via the 429 bus protocol.

3. The portable oxygen cylinder device according to claim 1, characterized in that, When oxygen is being filled on the machine, the outlet nozzle (10) is connected to an oxygen switch with a pressure gauge. The pressure of the oxygen being filled into the oxygen cylinder (14) can be monitored by observing the pressure value of the pressure gauge.

4. The portable oxygen cylinder device according to claim 1, characterized in that, A first washer (15) is provided in the internal threaded interface (25) for sealing, and a second washer (9) is provided in the external threaded interface (22) for sealing.

5. The portable oxygen cylinder device according to claim 1, characterized in that, The front end of the first doormat (2) is designed as a trapezoidal surface.

6. The portable oxygen cylinder device according to claim 1, characterized in that, The rear end of the bushing (5) is connected to the front end of the transverse air passage (23) and arranged coaxially.

7. The portable oxygen cylinder device according to claim 1, characterized in that, During oxygenation, the oxygen switch connected to the outlet nozzle (10) is closed. High-pressure oxygen from the onboard oxygenation nozzle or the ground oxygenation device flows through the inlet nozzle (1) and overcomes the elastic force of the first spring (4), opening the first valve pad (2). After the oxygen enters the transverse air passage (23), it enters the oxygen cylinder (14) through the pipe connector (13). When oxygenation ends, the first valve pad (2) closes under the combined action of the first spring (4) and the internal pressure. Oxygen from the oxygen cylinder (14) flows through the orifice of the pipe connector (13) into the transverse air passage (23) in the connector (6). One flow goes to the first valve pad (2), where the air inlet (26) is closed by the combined action of the elastic force of the first spring (4) and the internal pressure. Another flow overcomes the elastic force of the second spring (11) installed in the first valve sleeve (3), opening the second valve pad (7) and allowing the oxygen to flow out of the outlet connector (10). The other flow goes to the pressure sensor (18), which is connected to a 15V DC voltage to collect the pressure value inside the oxygen cylinder in real time and can realize low pressure and ultra-low pressure alarms.

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