Dynamic gas microfluidic balancing device for oxygen production and pressurization of a micro-pressure cabin

Abstract

The application discloses a dynamic gas micro-fluidic balancing device for oxygen production and pressure increase of a micro-pressure oxygen cabin, relates to the technical field of the micro-pressure oxygen cabin, and comprises a glass rotor flowmeter, an oxygen concentration flow sensor and a first dynamic balancing oxygen supply mechanism. The output end of the glass rotor flowmeter is connected with the input end of the oxygen concentration flow sensor. The output end of the oxygen concentration flow sensor is connected with the micro-pressure oxygen cabin. The first dynamic balancing oxygen supply mechanism is arranged at the input end of the glass rotor flowmeter, is used for comparing the pressure in the micro-pressure oxygen cabin in real time and dynamically adjusting, realizes the dynamic gas micro-fluidic balancing of the constant current and stable oxygen pressure and flow of the oxygen production and pressure increase system supplied to the micro-pressure oxygen cabin, and through the cooperation of the touch block and the touch sensor, the oxygen production and pressure increase system increases the pressure little by little each time, realizes the dynamic relative balance between the input oxygen pressure and the real-time change of the pressure in the micro-pressure oxygen cabin, and guarantees the stable oxygen delivery.

Description

Technical Field

[0001] This invention relates to the field of micro-pressure oxygen chamber technology, specifically a dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber. Background Technology

[0002] Currently, the oxygen production and pressurization control system of micro oxygen chambers generally uses traditional pressure regulating valves and throttle valves to control the pressure inside the chamber and the oxygen supply flow rate, respectively. It sets a fixed pressure and flow rate based on atmospheric pressure and cannot be dynamically adjusted during the oxygen production and pressurization process. In addition, since the oxygen production and pressurization system uses solenoid valves to control oxygen production and pressurization, fluctuations in gas pressure and flow rate will occur when the solenoid valves switch, resulting in fluctuations in the pressure and oxygen inside the chamber, and poor pressure and flow stability.

[0003] To address the aforementioned issues, an improved dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber is now designed. Summary of the Invention

[0004] The purpose of this invention is to provide a dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber, so as to solve the problems mentioned in the background art.

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

[0006] A dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber includes a glass rotor flowmeter, an oxygen concentration flow sensor, and a first dynamic balancing oxygen delivery mechanism. The input end of the glass rotor flowmeter is equipped with an inlet connection pipe for inputting oxygen, and the output end of the glass rotor flowmeter is equipped with an outlet connection pipe. The input end of the oxygen concentration flow sensor is equipped with an inlet connection pipe, and the input end of the inlet connection pipe is connected to the output end of the outlet connection pipe of the glass rotor flowmeter. The output end of the oxygen concentration flow sensor is equipped with an outlet connection pipe for delivering oxygen into the micro-pressure oxygen chamber.

[0007] The first dynamic balance oxygen delivery mechanism is installed at the input end of the inlet connecting pipe of the glass rotor flowmeter. It is used to compare the pressure with the pressure inside the micro-pressure oxygen chamber in real time and make dynamic adjustments to keep the input oxygen pressure in dynamic relative balance with the real-time changing pressure inside the micro-pressure oxygen chamber, so as to ensure stable oxygen delivery.

[0008] As a further aspect of the present invention: the first dynamic balance oxygen delivery mechanism includes a pressure regulating valve, an inlet connecting pipe for the input end of the pressure regulating valve, an oxygen input connector for the input end of the inlet connecting pipe for the pressure regulating valve, the oxygen input connector for the oxygen generator and booster unit, an outlet connecting pipe for the output end of the pressure regulating valve, an outlet connecting pipe for the pressure regulating valve, an input end of the outlet connecting pipe for the pressure regulating valve, and an inlet connecting pipe for the glass rotor flowmeter for the input end of the pressure regulating valve. A pressure regulating pipe is installed at the regulating end of the pressure regulating valve, and a micro-pressure oxygen chamber connector is installed at the end of the pressure regulating pipe furthest from the pressure regulating valve, the micro-pressure oxygen chamber connector for the micro-pressure oxygen chamber for the micro-pressure oxygen chamber.

[0009] As a further embodiment of the present invention: the first dynamic balance oxygen delivery mechanism is replaced with a second dynamic balance oxygen delivery mechanism. The second dynamic balance mechanism includes a pressure regulating pipe. An oxygen input connector is installed at the input end of the pressure regulating pipe and is connected to an integrated oxygen generator and booster. A micro-pressure oxygen chamber connector is installed at the output end of the pressure regulating pipe and is connected to a micro-pressure oxygen chamber. A pressure regulating valve outlet connector is installed on the side wall of the pressure regulating pipe, and the output end of the pressure regulating valve outlet connector is connected to the input end of the inlet connector of the glass rotor flowmeter.

[0010] A second fixing ring is horizontally installed on the inner wall of the outlet connecting pipe of the pressure regulating valve near the oxygen input connector. A touch sensor for transmitting signals to the controller of the integrated oxygen generator and booster is installed at one end of the second fixing ring near the outlet connecting pipe of the pressure regulating valve.

[0011] A first fixing ring is installed on the inner wall of the pressure regulating pipe near the micro-pressure oxygen chamber connector on the outlet connecting pipe of the pressure regulating valve. A first spring is installed at the end of the first fixing ring near the outlet connecting pipe of the pressure regulating valve. A blocking block for sealing the input end of the outlet connecting pipe of the pressure regulating valve is installed at the end of the first spring away from the first fixing ring. A touch block for use with a touch sensor is installed at the end of the blocking block away from the first fixing ring.

[0012] As a further embodiment of the present invention: a second spring is installed at the end of the second fixed ring near the oxygen input connector, and a movable ring is installed at the end of the second spring away from the second fixed ring.

[0013] As a further aspect of the present invention: a sealing sleeve is installed on the side wall of the sealing block to facilitate sealing the input end of the outlet connection pipe of the pressure regulating valve.

[0014] As a further aspect of the present invention: the side wall of the moving ring is equipped with balls that facilitate the movement of the moving ring along the inner wall of the pressure regulating pipe.

[0015] As a further aspect of the present invention: the oxygen input connector adopts a PL10-02 pneumatic quick-connect plug.

[0016] As a further aspect of the present invention: the pressure regulating valve is an AR2000 pneumatic pressure regulating valve with a pressure regulating range between 0 and 2 MPa.

[0017] As a further aspect of the present invention, the range of the glass rotor flowmeter is 0-30 L / min.

[0018] As a further aspect of the present invention: the oxygen concentration flow sensor is an ultrasonic sensor with an oxygen concentration range of 0-100% and an oxygen flow range of 0-30L / min.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention compares the pressure of the input oxygen with the pressure inside the micro-pressure oxygen chamber using a pressure regulating valve and dynamically adjusts it to achieve a constant and stable dynamic gas microfluidic balance in terms of pressure and flow rate of oxygen supplied to the micro-pressure oxygen chamber by the oxygen generation and pressurization system. This replaces a single pressure regulating valve and a single throttle valve, avoiding the problem of large gas flow fluctuations caused by decentralized fixed control.

[0021] Meanwhile, through the cooperation of the touch block and the touch sensor, the oxygen boosting system increases the pressure a little each time, so as to maintain a dynamic relative balance between the input oxygen pressure and the real-time changing pressure inside the micro-pressure oxygen chamber, thus ensuring a stable oxygen delivery. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0023] Figure 2 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0025] The components are as follows: 1. Pressure regulating pipe; 2. Pressure regulating valve; 3. Pressure regulating valve inlet connection pipe; 4. Oxygen input connector; 5. Pressure regulating valve outlet connection pipe; 6. Oxygen concentration flow sensor outlet connection pipe; 7. Glass rotor flow meter inlet connection pipe; 8. Glass rotor flow meter; 9. Glass rotor flow meter outlet connection pipe; 10. Oxygen concentration flow sensor inlet connection pipe; 11. Oxygen concentration flow sensor; 12. Micro-pressure oxygen chamber connector; 13. First fixed ring; 14. First spring; 15. Blocking block; 16. Contact block; 17. Contact sensor; 18. Second fixed ring; 19. Second spring; 20. Moving ring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figure 1 In this embodiment of the invention, a dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber includes a glass rotor flowmeter 8, an oxygen concentration flow sensor 11, and a first dynamic balancing oxygen delivery mechanism. The input end of the glass rotor flowmeter 8 is equipped with a glass rotor flowmeter inlet connecting pipe 7 for inputting oxygen, and the output end of the glass rotor flowmeter 8 is equipped with a glass rotor flowmeter outlet connecting pipe 9. The input end of the oxygen concentration flow sensor 11 is equipped with an oxygen concentration flow sensor inlet connecting pipe 10, and the input end of the oxygen concentration flow sensor inlet connecting pipe 10 is connected to the output end of the glass rotor flowmeter outlet connecting pipe 9. The output end of the oxygen concentration flow sensor 11 is equipped with an oxygen concentration flow sensor outlet connecting pipe 6 for delivering oxygen into the micro-pressure oxygen chamber.

[0029] The first dynamic balance oxygen delivery mechanism is installed at the input end of the inlet connecting pipe 7 of the glass rotor flowmeter. It is used to compare the pressure with the pressure inside the micro-pressure oxygen chamber in real time and make dynamic adjustments to keep the input oxygen pressure in dynamic relative balance with the real-time changing pressure inside the micro-pressure oxygen chamber, so as to ensure stable oxygen delivery.

[0030] The first dynamic balance oxygen delivery mechanism includes a pressure regulating valve 2. The input end of the pressure regulating valve 2 is equipped with a pressure regulating valve inlet connecting pipe 3. The input end of the pressure regulating valve inlet connecting pipe 3 is equipped with an oxygen input connector 4, which is connected to an integrated oxygen generator and booster. The output end of the pressure regulating valve 2 is equipped with a pressure regulating valve outlet connecting pipe 5, which is connected to the input end of a glass rotor flowmeter inlet connecting pipe 7. The regulating end of the pressure regulating valve 2 is equipped with a pressure regulating pipe 1. The end of the pressure regulating pipe 1 away from the pressure regulating valve 2 is equipped with a micro-pressure oxygen chamber connector 12, which is connected to a micro-pressure oxygen chamber.

[0031] In use, the micro-pressure oxygen chamber connector 12 is connected to the micro-pressure oxygen chamber. Under the pressure of the micro-pressure oxygen chamber, the pressure regulating valve 2 closes. Then, the integrated oxygen generator and booster supply oxygen to the oxygen input connector 4. The oxygen input connector 4 delivers oxygen to the inside of the pressure regulating valve inlet connector 3. The pressure regulating valve inlet connector 3 delivers oxygen to the inside of the pressure regulating valve 2, and the pressure gradually increases from low to high. When the pressure of the input oxygen is greater than the pressure of the micro-pressure oxygen chamber, the pressure regulating valve 2 opens, and the pressure regulating valve 2 delivers oxygen to the inside of the pressure regulating valve outlet connector 5. The pressure regulating valve outlet connector 5 then delivers oxygen through... The inlet connection pipe 7 of the glass rotor flow meter delivers oxygen to the interior of the glass rotor flow meter 8. The glass rotor flow meter 8 performs flow monitoring and secondary flow balancing and stabilization. The glass rotor flow meter 8 delivers oxygen to the interior of the oxygen concentration flow sensor 11 through the outlet connection pipe 9 and the inlet connection pipe 10 of the oxygen concentration flow sensor. The oxygen concentration flow sensor 11 monitors the oxygen concentration and oxygen flow in real time and uploads the data to the control system. The oxygen concentration flow sensor 11 delivers oxygen to the interior of the micro-pressure oxygen chamber and the oxygen inhalation pipeline through the outlet connection pipe 6 of the oxygen concentration flow sensor.

[0032] Example 2

[0033] Please see Figure 2 and Figure 3 The difference between this embodiment and Embodiment 1 is that the first dynamic balance oxygen delivery mechanism is replaced with a second dynamic balance oxygen delivery mechanism. The second dynamic balance mechanism includes a pressure regulating pipe 1, an oxygen input connector 4 is installed at the input end of the pressure regulating pipe 1, the oxygen input connector 4 is connected to the oxygen generator and booster, a micro-pressure oxygen chamber connector 12 is installed at the output end of the pressure regulating pipe 1, the micro-pressure oxygen chamber connector 12 is connected to the micro-pressure oxygen chamber, and a pressure regulating valve outlet connector 5 is installed on the side wall of the pressure regulating pipe 1, the output end of the pressure regulating valve outlet connector 5 is connected to the input end of the glass rotor flowmeter inlet connector 7.

[0034] A second fixing ring 18 is horizontally installed on the inner wall of the outlet connecting pipe 5 of the pressure regulating valve near the oxygen input connector 4. A touch sensor 17 for transmitting signals to the controller of the integrated oxygen generator and booster is installed at one end of the second fixing ring 18 near the outlet connecting pipe 5 of the pressure regulating valve.

[0035] A first fixing ring 13 is installed on the inner wall of the pressure regulating pipe 1 on the side of the pressure regulating valve outlet connecting pipe 5 near the micro-pressure oxygen chamber connector 12. A first spring 14 is installed at one end of the first fixing ring 13 near the pressure regulating valve outlet connecting pipe 5. A blocking block 15 for blocking the input end of the pressure regulating valve outlet connecting pipe 5 is installed at the end of the first spring 14 away from the first fixing ring 13. A touch block 16 for use with the touch sensor 17 is installed at the end of the blocking block 15 away from the first fixing ring 13.

[0036] During use, since the oxygen input connector 4 is connected to the micro-pressure oxygen chamber, under the pressure of the micro-pressure oxygen chamber, the sealing block 15 moves towards the second fixed ring 18, so that the sealing block 15 seals the input end of the pressure regulating valve outlet connecting pipe 5. Then, the oxygen generator and booster delivers oxygen at the specified pressure to the oxygen input connector 4, and the oxygen input connector 4 delivers oxygen into the interior of the pressure regulating pipeline 1.

[0037] When the pressure of the input oxygen is greater than the pressure of the micro-pressure oxygen chamber, the sealing block 15 moves upward under the action of the pressure, opening the input end of the pressure regulating valve outlet connection pipe 5, allowing oxygen to enter the interior of the pressure regulating valve outlet connection pipe 5. Then, the oxygen passes sequentially through the glass rotor flowmeter inlet connection pipe 7, the glass rotor flowmeter 8, the glass rotor flowmeter outlet connection pipe 9, the oxygen concentration flow sensor inlet connection pipe 10, the oxygen concentration flow sensor 11, and the oxygen concentration flow sensor outlet connection pipe 6. Then, the oxygen concentration flow sensor outlet connection pipe 6 delivers oxygen to the micro-pressure oxygen chamber and the oxygen inhalation pipeline.

[0038] As oxygen is input, the pressure inside the micro-pressure oxygen chamber increases. When the pressure inside the micro-pressure oxygen chamber is greater than or equal to the input oxygen pressure, under the action of pressure and spring, the sealing block 15 moves towards the second fixed ring 18, causing the sealing block 15 to block the input end of the pressure regulating valve outlet connecting pipe 5. The sealing block 15 drives the contact block 16 to contact the contact sensor 17, and the contact sensor 17 sends a signal to the oxygen generator and booster controller, causing the oxygen generator and booster to increase the rated pressure, so that the input oxygen pressure is again greater than the micro-pressure oxygen chamber pressure, and oxygen is delivered. This process is repeated to achieve a dynamic relative balance between the input oxygen pressure and the real-time changing pressure inside the micro-pressure oxygen chamber, ensuring stable oxygen delivery.

[0039] A second spring 19 is installed at the end of the second fixed ring 18 near the oxygen input connector 4, and a movable ring 20 is installed at the end of the second spring 19 away from the second fixed ring 18. The function of the movable ring 20 and the second spring 19 is that when the oxygen pressure suddenly changes, since the pressure on the upper and lower sides of the movable ring 20 cannot change in time, the movable ring 20 will move upward first and compress the second spring 19, thereby buffering the sudden pressure change until the pressure on both sides of the movable ring 20 is balanced.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber, comprising a glass rotor flowmeter (8), an oxygen concentration flow sensor (11), and a second dynamic balancing oxygen delivery mechanism, wherein the input end of the glass rotor flowmeter (8) is equipped with a glass rotor flowmeter inlet connection pipe (7) for inputting oxygen, the output end of the glass rotor flowmeter (8) is equipped with a glass rotor flowmeter outlet connection pipe (9), and the input end of the oxygen concentration flow sensor (11) is equipped with an oxygen concentration flow sensor inlet connection pipe (10), characterized in that, The input end of the oxygen concentration flow sensor inlet connection pipe (10) is connected to the output end of the glass rotor flow meter outlet connection pipe (9), and the output end of the oxygen concentration flow sensor (11) is equipped with an oxygen concentration flow sensor outlet connection pipe (6) for delivering oxygen to the micro-pressure oxygen chamber. The second dynamic balance oxygen delivery mechanism includes a pressure regulating pipe (1), an oxygen input connector (4) is installed at the input end of the pressure regulating pipe (1), the oxygen input connector (4) is connected to the oxygen generator and booster, a micro-pressure oxygen chamber connector (12) is installed at the output end of the pressure regulating pipe (1), the micro-pressure oxygen chamber connector (12) is connected to the micro-pressure oxygen chamber, a pressure regulating valve outlet connector (5) is installed on the side wall of the pressure regulating pipe (1), and the output end of the pressure regulating valve outlet connector (5) is connected to the input end of the glass rotor flowmeter inlet connector (7). A second fixing ring (18) is horizontally installed on the inner wall of the pressure regulating pipe (1) near the oxygen input connector (4). A touch sensor (17) for transmitting signals to the oxygen generator controller is installed at one end of the second fixing ring (18) near the outlet connecting pipe (5) of the pressure regulating valve. A first fixing ring (13) is installed on the inner wall of the pressure regulating pipe (1) near the micro-pressure oxygen chamber connector (12). A first spring (14) is installed at the end of the first fixing ring (13) near the outlet connecting pipe (5) of the pressure regulating valve. A blocking block (15) for blocking the input end of the outlet connecting pipe (5) of the pressure regulating valve is installed at the end of the first spring (14) away from the first fixing ring (13). A touch block (16) for use with the touch sensor (17) is installed at the end of the blocking block (15) away from the first fixing ring (13). A second spring (19) is installed at the end of the second fixed ring (18) near the oxygen input connector (4), and a movable ring (20) is installed at the end of the second spring (19) away from the second fixed ring (18).

2. The dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber according to claim 1, characterized in that, The sealing block (15) has a sealing sleeve installed on its side wall to facilitate sealing the input end of the pressure regulating valve outlet connection pipe (5).

3. The dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber according to claim 1, characterized in that, The side wall of the moving ring (20) is equipped with balls that facilitate the movement of the moving ring (20) along the inner wall of the pressure regulating pipe (1).

4. The dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber according to claim 1, characterized in that, The range of the glass rotor flowmeter (8) is 0-30 L / min.

5. The dynamic gas microfluidic balancing device for oxygen generation and pressurization in a micro-pressure oxygen chamber according to claim 1, characterized in that, The oxygen concentration flow sensor (11) is an ultrasonic sensor with an oxygen concentration range of 0-100% and an oxygen flow range of 0-30L / min.

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