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Method for measuring airship airbag volume based on gas concentration change

A technology of gas concentration and gas volume, applied in volume measurement instruments/methods, liquid/fluid solid measurement, measurement devices, etc., can solve problems such as difficulty in measuring the volume of airship capsules, and achieve the effect of easy detection

Inactive Publication Date: 2018-12-21
63653 FORCES PLA
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  • Abstract
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Problems solved by technology

[0004] The purpose of the invention is to solve the problem of difficult volume measurement of the airship capsule

Method used

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  • Method for measuring airship airbag volume based on gas concentration change
  • Method for measuring airship airbag volume based on gas concentration change
  • Method for measuring airship airbag volume based on gas concentration change

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Embodiment Construction

[0025] A specific embodiment of the present invention is given below in conjunction with the accompanying drawings.

[0026] The test article is a low-altitude airship such as figure 1 and figure 2 As shown, it includes the main airbag and the auxiliary airbag. The main airbag is filled with helium to provide lift; the auxiliary airbag is filled with air to adjust the self-weight of the airship. Hydrogen is used as the test gas to detect the volume of the auxiliary airbag.

[0027] S1, detect the gas volume concentration A of the initial test gas in the airbag 1 (ppm), temperature T 1 (℃) and pressure p 1 (Pa);

[0028] Use a hydrogen detector to detect the hydrogen content in the air filled in the auxiliary airbag, which is A 1 =0.5ppm, at the same time, the pressure and temperature in the detection capsule are respectively p 1 =101545Pa, T 1 = 20°C.

[0029] S2, fill the auxiliary airbag with high-purity hydrogen Δm=500 mg, and wait for the hydrogen to diffuse evenl...

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Abstract

The invention belongs to the field of volume measurement of irregular inflatable envelope such as an airship envelope, and relates to a method for measuring airship airbag volume based on gas concentration change. The method for measuring the airship airbag volume based on the gas concentration change comprises the following steps of: detecting a gas volume concentration A1 (ppm), a temperature T1(DEG C), and a pressure p1 (Pa) of initial test gas in the airbag; charging the test gas into the airbag, and detecting a gas volume concentration A2 (ppm), a temperature T2 (DEG C), and a pressure p2 (Pa) of the test gas in the airbag; and a calculation formula of envelope volume as follows: V=22.4(delta)m / M{A2(273 / 273+T2)(P2 / 101325)-A1(273 / 273+T1)(P1 / 101325)}. The method for measuring the airship airbag volume based on the gas concentration change disclosed by the invention is easy to detect, can measure the airbag with any shape and any wrinkle due to free diffusion property of the gas, and even if a small amount of the test gas is added, the airship state is not affected.

Description

technical field [0001] The invention belongs to the field of volume measurement of irregular inflatable bladders such as airship bladders, and relates to a method for measuring the volume of airship airbags based on gas concentration changes. Background technique [0002] There are generally main and auxiliary airbags inside the airship. The main airbag stores buoyant gas (such as helium) to provide lift, and the auxiliary airbag stores air. Through exhaust and inflation, the self-weight of the airship is adjusted, and then the airship is controlled to rise and fall, affecting the flying height of the airship. The volume of the main and auxiliary airbags affects the flying height and flight safety of the airship. Therefore, measuring the volume of the main and auxiliary airbags has become an important task. [0003] Since there is useful gas in the airship airbag, the volume of the airbag cannot be measured by measuring the volume of the discharged gas. Moreover, the shape ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F17/00
CPCG01F17/00
Inventor 耿宝刚郭凯张永栋李云飞周江龙刘源张剑华
Owner 63653 FORCES PLA
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