Helicopter molecular sieve oxygen supply device and oxygen flow measuring equipment

Abstract

The utility model provides a helicopter molecular sieve oxygen supply device and oxygen flow measuring equipment, and the measuring equipment comprises an oxygen concentration sensor which is arranged on an oxygen supply pipeline and is used for measuring the oxygen concentration in the oxygen supply pipeline; the oxygen flow sensor is arranged on the oxygen supply pipeline, and the oxygen flow sensor is used for measuring the oxygen flow in the oxygen supply pipeline; the characteristics of the open type oxygen supply mask are fully utilized, a mode for measuring the oxygen supply flow and the oxygen supply concentration on the oxygen supply pipeline is formulated, and the real continuous oxygen supply amount at the altitude of 7000 meters is calculated by testing the oxygen content in the continuous oxygen supply amount of the molecular sieve oxygen supply device at the altitude of 7000 meters.

Description

Technical Field

[0001] This application belongs to the technical field of helicopter molecular sieve oxygen generation, and specifically relates to a helicopter molecular sieve oxygen supply device and an oxygen flow measurement device. Background Art

[0002] The molecular sieve oxygen supply device can ensure the oxygen demand of 8 crew members at a flight profile below 7000m. Its oxygen concentration needs to meet the A curve in GJB114-1986 "Physiological Requirements for Acute Hypoxia Protection". The continuous oxygen supply for each crew member should be no less than 14L / min according to HB6504 requirements.

[0003] In order to test whether the continuous oxygen supply of the molecular sieve oxygen supply device meets the requirement of 14L / min, it is necessary to test the continuous oxygen supply of the molecular sieve oxygen supply device within the altitude range of 0 - 7000 meters. For the molecular sieve oxygen supply device using a closed oxygen supply mask, the oxygen output and oxygen concentration of its oxygen generation host meet the standard requirements.

[0004] However, for the molecular sieve oxygen supply device using an open oxygen supply mask, during normal operation, the oxygen concentration output by the oxygen generation host is between 85% - 93%, exceeding the concentration standard requirement, and the output oxygen flow rate is lower than the standard requirement. Oxygen needs to be mixed with outside air in the open oxygen supply mask and then provided to the crew for breathing.

[0005] Therefore, if directly testing the oxygen flow rate in the oxygen supply pipeline, it will surely be less than the continuous flow rate requirement of 14L / min. If testing the oxygen flow rate in the oxygen supply mask, due to the direct connection of the air valve to the outside air, the measured oxygen flow rate is also inaccurate. Utility Model Content

[0006] The purpose of this application is: aiming at the above technical problem of inaccurate measurement, this application provides a helicopter molecular sieve oxygen supply device and an oxygen flow measurement device.

[0007] In the first aspect, this application provides a helicopter molecular sieve oxygen supply device, and the oxygen supply device includes:

[0008] A gas source treatment device;

[0009] An oxygen generation host, connected to the gas source treatment device;

[0010] An oxygen supply pipeline, one end of the oxygen supply pipeline is connected to the oxygen generation host;

[0011] An oxygen regulator, arranged between the oxygen generation host and the oxygen supply pipeline;

[0012] An open-type oxygen supply mask, which has an exhalation valve and an air valve, is connected to the other end of the oxygen supply pipeline. When inhaling, the exhalation valve closes and the air valve opens, and oxygen is input from the oxygen supply pipeline and mixed with the air entering from the air valve. When exhaling, the exhalation valve opens, the air valve and the oxygen supply valve of the oxygen regulator close, and the exhaled air is discharged from the exhalation valve.

[0013] Preferably, the oxygen regulator can control the intake valve according to the altitude and breathing rhythm for flow regulation, and deliver the oxygen amount matching the current altitude into the open-type oxygen supply mask.

[0014] In a second aspect, the present application also provides an oxygen flow measurement device, which is used to measure the continuous oxygen supply flow in the oxygen supply device as described above. When measuring, place the oxygen supply device in a low-pressure chamber and lower the air pressure altitude in the low-pressure chamber to the air pressure altitude at the test altitude. The measurement device includes:

[0015] An oxygen concentration sensor, which is arranged on the oxygen supply pipeline and is used to measure the oxygen concentration in the oxygen supply pipeline.

[0016] An oxygen flow sensor, which is arranged on the oxygen supply pipeline and is used to measure the oxygen flow in the oxygen supply pipeline.

[0017] An oxygen generation controller, which is respectively connected to an oxygen generation host, an air source treatment device, an oxygen regulator, the oxygen concentration sensor, and the oxygen flow sensor.

[0018] Preferably, the test equipment further includes:

[0019] A test upper computer, which is respectively connected to the oxygen generation host, the air source treatment device, the oxygen regulator, the oxygen concentration sensor, and the oxygen flow sensor.

[0020] Preferably, the oxygen generation controller calculates the true continuous oxygen supply amount at the test altitude according to the control logic.

[0021] Preferably, the measurement device further includes:

[0022] A simulated lung, which is connected to the open-type oxygen supply mask.

[0023] The beneficial technical effects of the present application:

[0024] The present application makes full use of the characteristics of the open-type oxygen supply mask, formulates a method for measuring the oxygen supply flow and oxygen supply concentration on the oxygen supply pipeline, and calculates the true continuous oxygen supply amount at an altitude of 7000 meters by testing the oxygen content in the continuous oxygen supply amount of the molecular sieve oxygen supply device at an altitude of 7000 meters.

[0025] This measuring device effectively solves the problem of continuous oxygen supply flow measurement for the open oxygen supply mask of the molecular sieve oxygen supply device, laying a foundation for the integrated application of the molecular sieve oxygen supply device and the open oxygen supply mask. This integrated application can significantly reduce the breathing resistance of crew members and improve the oxygen use comfort and safety of crew members. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the working principle of a helicopter molecular sieve oxygen supply device during inhalation provided by an embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of the working principle of a helicopter molecular sieve oxygen supply device during exhalation provided by an embodiment of the present application;

[0028] Among them, 1 - oxygen production controller; 2 - air source treatment device; 3 - oxygen production host; 4 - oxygen regulator; 5 - oxygen concentration sensor; 6 - oxygen flow sensor; 7 - exhalation valve; 8 - oxygen supply mask; 9 - air valve; 10 - simulated lung; 11 - oxygen supply pipeline; 12 - test upper computer. Detailed Embodiments

[0029] The helicopter molecular sieve oxygen supply device provided by the present application is composed of an air source treatment device, an oxygen production host, an oxygen partial pressure sensor, an oxygen supply pipeline, an oxygen regulator, an oxygen supply mask, etc.

[0030] This helicopter molecular sieve oxygen supply device adopts an open oxygen supply mask. When the crew member inhales, the exhalation valve of the mask closes and the air valve opens. Oxygen is input from the mask inlet pipe and mixed with the air entering from the air valve; when exhaling, the exhalation valve of the oxygen supply mask opens, the air valve and the oxygen supply valve of the oxygen regulator close, and the air exhaled by the crew member is discharged from the exhalation valve.

[0031] Among them, the oxygen regulator controls the intake valve according to the altitude and breathing rhythm, adjusts the flow rate, and conveys the oxygen amount matching the current altitude into the oxygen supply mask, and mixes it with the air entering from the air valve of the mask, so as to output a mixed gas that meets the oxygen concentration specified by the A curve for personnel to use.

[0032] Regarding the oxygen generation characteristics of this molecular sieve oxygen supply device, when it operates normally, the oxygen concentration output by the oxygen generation host is between 85% and 93%. However, the oxygen supply concentration requirement at an altitude of 7000 meters is 57%. To meet the concentration requirement, when the crew inhales, the exhalation valve of the mask closes and the air valve opens. The air entering through the air valve mixes with the oxygen input from the oxygen supply pipeline inside the mask, and the mixed oxygen with reduced concentration is then provided for the crew to breathe. According to the breathing characteristics of the crew, the amount of air breathed by the crew is equal to the sum of the continuous oxygen supply amount of the molecular sieve oxygen supply device and the amount of outside air. If the oxygen content in the outside air is ignored, as long as the oxygen content in the continuous oxygen supply amount of the molecular sieve oxygen supply device meets the oxygen content requirement at an altitude of 7000 meters, it can be considered that the continuous oxygen supply amount of the molecular sieve oxygen supply device meets the requirement of 14 L / min. The oxygen content at an altitude of 7000 meters is the product of the continuous oxygen supply amount of 14 L / min and the oxygen supply concentration of 57%.

[0033] Therefore, as long as the oxygen supply concentration and the oxygen supply amount during the continuous oxygen supply of the molecular sieve oxygen supply device at an altitude of 7000 meters are measured, the true continuous oxygen supply amount can be calculated as the product of the measured oxygen supply concentration and the measured oxygen supply amount divided by 57%. If the true continuous oxygen supply amount is greater than 14 L / min, it can be determined that the continuous oxygen supply amount of the molecular sieve oxygen supply device meets the standard requirements; otherwise, it does not meet the standard requirements. This method calculates the continuous oxygen supply amount of the molecular sieve oxygen supply device through experiments and calculations, laying a foundation for the in-aircraft application of the continuous oxygen supply of the molecular sieve oxygen supply device.

[0034] In the embodiment of the present application, taking advantage of the characteristics of the open-type oxygen supply mask, when the crew inhales, the exhalation valve of the mask closes and the air valve opens. It is impossible to measure the oxygen supply flow rate and oxygen concentration inside the oxygen supply mask, so a method of measuring the oxygen supply flow rate and oxygen supply concentration on the oxygen supply pipeline is developed.

[0035] Among them, according to the breathing characteristics of the crew, the volume flow rate of the air breathed by the crew is equal to the sum of the continuous oxygen supply volume flow rate of the molecular sieve oxygen supply device and the volume flow rate of the outside air. Ignoring the oxygen content in the outside air, a method of measuring the oxygen content in the continuous oxygen supply amount of the molecular sieve oxygen supply device is developed.

[0036] Among them, by measuring the oxygen content in the continuous oxygen supply amount of the molecular sieve oxygen supply device, and knowing that the oxygen supply concentration requirement at an altitude of 7000 meters is 57%, the true continuous oxygen supply amount is calculated by dividing the product of the measured oxygen supply concentration and the measured oxygen supply amount by 57%.

[0037] Among them, the oxygen generation controller formulates its control logic according to the calculation method of the true continuous oxygen supply amount. If the true continuous oxygen supply amount is greater than 14 L / min, it can be determined that the continuous oxygen supply amount of the molecular sieve oxygen supply device meets the standard requirements; otherwise, it does not meet the standard requirements.

[0038] Among them, the oxygen regulator controls the intake valve according to the altitude and breathing rhythm, adjusts the flow rate, conveys the oxygen volume matching the current altitude into the oxygen supply mask, and mixes it with the air entering through the air valve of the mask, so as to output a mixed gas meeting the oxygen concentration specified by Curve A for personnel to use.

[0039] Among them, the oxygen regulator controls the intake valve according to the altitude and breathing rhythm, adjusts the flow rate, conveys the oxygen volume matching the current altitude into the oxygen supply mask, and this oxygen regulator can sense the breathing rhythm of the crew.

[0040] Among them, the oxygen regulator controls the intake valve according to the altitude and breathing rhythm, adjusts the flow rate, conveys the oxygen volume matching the current altitude into the oxygen supply mask, and this method can greatly reduce the breathing resistance of the crew and improve the oxygen use comfort of the crew.

[0041] Among them, for the oxygen supply mask, when the crew inhales, the exhalation valve of the mask closes, and the air valve opens. Oxygen is input from the mask inlet pipe and mixed with the air entering through the air valve; when exhaling, the exhalation valve of the oxygen supply mask opens, and the air valve and the oxygen supply valve of the oxygen regulator close, and the air exhaled by the crew is discharged from the exhalation valve.

[0042] This application makes full use of the characteristics of the open-type oxygen supply mask, formulates a method for measuring the oxygen supply flow rate and oxygen supply concentration on the oxygen supply pipeline, and calculates the true continuous oxygen supply volume at an altitude of 7000 meters by testing the oxygen content in the continuous oxygen supply volume of the molecular sieve oxygen supply device at an altitude of 7000 meters. This method effectively solves the problem of continuous oxygen supply flow rate testing for the open-type oxygen supply mask of the molecular sieve oxygen supply device, and lays a foundation for the integrated application of the molecular sieve oxygen supply device and the open-type oxygen supply mask. This integrated application can greatly reduce the breathing resistance of the crew and improve the oxygen use comfort and oxygen use safety of the crew.

[0043] In other embodiments of this application, please refer to Figure 1 and Figure 2 , the measuring equipment provided by this application includes an oxygen production controller 1, an air source treatment device 2, an oxygen production host 3, an oxygen regulator 4, an oxygen concentration sensor 5, an oxygen flow sensor 6, an exhalation valve 7, an oxygen supply mask 8, an air valve 9, a simulated lung 10, an oxygen supply pipeline 11, and a test upper computer 12.

[0044] The working principle is as follows:

[0045] This measuring equipment makes use of the characteristics of the open-type oxygen supply mask 8. When the crew inhales, the exhalation valve 7 of the oxygen supply mask 8 closes, and the air valve 9 opens. Oxygen is input from the inlet pipe of the oxygen supply mask 8 and mixed with the air entering through the air valve 9; when exhaling, the exhalation valve 7 of the oxygen supply mask 8 opens, and the air valve 9 and the oxygen supply valve of the oxygen regulator 4 close, and the air exhaled by the crew is discharged from the exhalation valve 7.

[0046] During measurement, place the molecular sieve oxygen supply device in the low-pressure chamber, and lower the air pressure altitude in the low-pressure chamber to the air pressure altitude at 7000 meters above sea level. Turn on the molecular sieve oxygen supply device and the test host computer 12, and the air source treatment device 2 and the oxygen generation host 3 start to work. The oxygen regulator 4, the exhalation valve 7 and the air valve 9 open and close according to the changes in the breathing rhythm of the crew members. The simulated lung 10 is in a closed state. The oxygen concentration sensor 5 and the oxygen flow sensor 6 test the continuous oxygen supply concentration and the oxygen supply flow rate in the oxygen supply pipeline 11. The oxygen generation controller 1 calculates the true continuous oxygen supply amount at 7000 meters above sea level according to the control logic.

Claims

1. A molecular sieve oxygen supply device for a helicopter, characterized in that, The oxygen supply device includes: A gas source treatment device; An oxygen generation main unit, connected to the gas source treatment device; An oxygen supply pipeline, one end of the oxygen supply pipeline is connected to the oxygen generation main unit; An oxygen regulator, arranged between the oxygen generation main unit and the oxygen supply pipeline; An open-type oxygen supply mask, having an exhalation valve and an air valve, the open-type oxygen supply mask is connected to the other end of the oxygen supply pipeline; wherein, during inhalation, the exhalation valve is closed, the air valve is opened, and oxygen is input from the oxygen supply pipeline and mixed with the air entering from the air valve; during exhalation, the exhalation valve is opened, the air valve and the oxygen supply valve of the oxygen regulator are closed, and the exhaled air is discharged from the exhalation valve.

2. The oxygen supply device according to claim 1, wherein, The oxygen regulator can control the intake valve according to the altitude and breathing rhythm, perform flow regulation, and deliver an oxygen amount matching the current altitude into the open-type oxygen supply mask.

3. An oxygen flow measurement device, characterized in that, The measuring device is used to measure the continuous oxygen supply flow rate in the oxygen supply device as described in any one of claims 1-2. During measurement, place the oxygen supply device in a low-pressure chamber and lower the air pressure height in the low-pressure chamber to the air pressure height at the test altitude; The measuring device includes: An oxygen concentration sensor, arranged on the oxygen supply pipeline, the oxygen concentration sensor is used to measure the oxygen concentration in the oxygen supply pipeline; An oxygen flow sensor, arranged on the oxygen supply pipeline, the oxygen flow sensor is used to measure the oxygen flow rate in the oxygen supply pipeline; An oxygen generation controller, respectively connected to the oxygen generation main unit, the gas source treatment device, the oxygen regulator, the oxygen concentration sensor, and the oxygen flow sensor.

4. The measuring device according to claim 3, characterized in that, The measuring device further includes: A test host computer, respectively connected to the oxygen generation main unit, the gas source treatment device, the oxygen regulator, the oxygen concentration sensor, and the oxygen flow sensor.

5. The measuring device according to claim 3, characterized in that, The oxygen generation controller calculates the true continuous oxygen supply amount at the test altitude according to the control logic.

6. The measuring device according to claim 3, characterized in that, The measuring device further includes: An artificial lung, connected to the open-type oxygen supply mask.

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