CN213982980U

CN213982980U - Monitoring device for high-pressure air supply system of airplane

Info

Publication number: CN213982980U
Application number: CN202022875291.2U
Authority: CN
Inventors: 刘方兴; 刘素萍; 杨子仲; 陈晗
Original assignee: Shenyang Aircraft Design and Research Institute Aviation Industry of China AVIC
Current assignee: Shenyang Aircraft Design and Research Institute Aviation Industry of China AVIC
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-17
Anticipated expiration: 2030-12-04

Abstract

The application provides an aircraft high pressure air supply system monitoring devices, monitoring devices includes: the first sensor is arranged on the high-pressure gas cylinder and used for measuring the gas pressure and temperature in the high-pressure gas cylinder; the second sensor is arranged on a pressure reducer in the high-pressure gas supply system and used for measuring the pressure and the temperature of gas decompressed by the pressure reducer; and the controller is connected with the first sensor, the second sensor and the valve in the high-pressure gas supply system, and monitors the state of the high-pressure gas supply system according to the data information acquired by the first sensor and the second sensor and the state of the valve. The monitoring device for the high-pressure air supply system of the airplane can improve the testability of the high-pressure air supply system and the test precision of pressure, judge whether the air tightness of the system is normal or not, simultaneously avoid the influence of an operator on the measurement accuracy, and improve the system installation efficiency and the guarantee.

Description

Monitoring device for high-pressure air supply system of airplane

Technical Field

The application belongs to the technical field of aircraft air supply, and particularly relates to a monitoring device for a high-pressure air supply system of an aircraft.

Background

The aircraft is provided with a high-pressure gas supply system, high-pressure gas is stored in a high-pressure gas cylinder, the pressure of the gas is reduced to a required value through a pressure reducing valve, a valve is opened or closed through a controller to control the on-off of a gas supply pipeline, and when the valve is opened, the high-pressure gas is conveyed to a required position through the pipeline.

However, the existing aircraft high-pressure air supply system has the following disadvantages:

1) the pressure before and after the pressure reducer can be measured only by a mechanical pressure gauge, the manual measurement operation is required by ground workers, the pressure needs to be checked before and after each rack takeoff, and the workload of ground maintenance personnel is increased;

2) the gas pressure measuring device has the advantages that the gas pressure measuring device is poor in testability and low in measuring precision, automatic detection cannot be carried out, a worker can influence the measuring precision, the measuring range of the mechanical pressure gauge is small, the error precision of the high-pressure gauge is about +/-0.2 MPa, the gas pressure in the high-pressure gas cylinder cannot be accurately measured, and the reading error is larger if the pressure gauge cannot be looked at by the position of the measurer;

3) the arrangement position is limited, the mechanical pressure gauge needs manual reading measurement, the requirement on the position is extremely high during arrangement, a position with a cover cap needs to be selected, the cover cap needs to be frequently detachable, meanwhile, the observation of personnel is convenient, and the position seen by normal people in the eye is optimal;

4) the air tightness and the working state of the high-pressure air supply system cannot be monitored in the flying process of the airplane, and if the high-pressure air supply system leaks air, the flying personnel cannot know and process the air leakage.

Disclosure of Invention

It is an object of the present application to provide an aircraft high pressure air supply system monitoring device to address or mitigate at least one of the problems of the background art.

The technical scheme of the application is as follows: an aircraft high pressure air supply system monitoring device, the monitoring device comprising:

the first sensor is arranged on the high-pressure gas cylinder and used for measuring the gas pressure and temperature in the high-pressure gas cylinder;

the second sensor is arranged on a pressure reducer in the high-pressure gas supply system and used for measuring the pressure and the temperature of gas decompressed by the pressure reducer; and

and the controller is connected with the first sensor, the second sensor and the valve in the high-pressure gas supply system, and monitors the state of the high-pressure gas supply system according to the data information acquired by the first sensor and the second sensor and the state of the valve.

Furthermore, the first sensor and the second sensor are temperature and pressure integrated sensors.

Further, the accuracy of the first sensor and the second sensor is not lower than 0.01 MPa.

The monitoring device for the high-pressure air supply system of the airplane can improve the testability of the high-pressure air supply system and the test precision of pressure, judge whether the air tightness of the system is normal or not, simultaneously avoid the influence of an operator on the measurement accuracy, and improve the system installation efficiency and the guarantee.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

Fig. 1 is a schematic view of a monitoring device for a high-pressure air supply system of an aircraft according to the present application.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

As shown in fig. 1, the monitoring device for the high-pressure air supply system of the aircraft provided by the present application mainly comprises two sensors and a controller. The sensor 1 is arranged on a high-pressure gas cylinder in a high-pressure gas supply system and used for measuring the gas pressure and temperature in the high-pressure gas cylinder, and the measured gas pressure and temperature are the gas pressure and temperature of a high-pressure section of the high-pressure gas supply system; the sensor 2 is arranged on a pressure reducer in the high-pressure gas supply system and used for measuring the pressure and the temperature of gas decompressed by the pressure reducer, and the measured pressure and temperature of the gas are the pressure and the temperature of the gas at the low-pressure section of the high-pressure gas supply system. The controller is connected with the two sensors through signal lines and connected with a valve in the high-pressure gas supply system, and is used for realizing real-time monitoring and control of the pressure and the temperature of the high-pressure section and the low-pressure section of the high-pressure gas supply system.

Wherein, first sensor and second sensor are warm-pressing integral type sensor, can realize that a sensor carries out simultaneous acquisition to temperature and pressure. Preferably, the accuracy of the first sensor and the second sensor is not lower than that of the mechanical pressure gauge in the prior art, for example, the accuracy range of the sensors may be ± 0.01 MPa.

In the flying process of the airplane, when a valve in the high-pressure air supply system is opened, the high-pressure air supply system enters an air supply state, and the controller judges whether the flow of the high-pressure air supply system is normal or not by collecting the temperature and pressure data of the two sensors and combining the opening time of the valve; when the valve of the high-pressure gas supply system is closed, the controller judges whether the high-pressure gas supply system leaks gas or not by collecting the temperature and pressure data of the two sensors and combining the state equation of the high-pressure gas. During surface maintenance, gas pressure and temperature readings within the high/low pressure sections may be taken directly by surface equipment.

The monitoring device for the high-pressure air supply system of the airplane has the advantages that compared with the monitoring device for the high-pressure air supply system in the prior art, the mechanical pressure gauge is used for measuring the system pressure, and the monitoring device for the high-pressure air supply system of the airplane has the advantages that:

1) the ground maintenance work can be reduced, the maintenance opening cover does not need to be opened before and after each flight, the system pressure value can be accurately known only through ground equipment, the workload is greatly reduced, the labor force is saved, and the maintenance efficiency is improved;

2) the accuracy of 0.2MPa of the mechanical pressure gauge is increased to 0.01MPa, so that the testing accuracy is improved, the pressure value in the system can be more accurately measured, whether the system normally works or not is judged, errors possibly caused by manual measurement are avoided, and the system testability is improved;

3) the sensor only needs to be arranged together with the gas cylinder, and does not need to be arranged at a cover cap which is parallel and level to the human visual line, so that the flexibility of the system is increased, the overall arrangement scheme of the system is optimized, the overall arrangement burden of an airplane is reduced, and the requirement of the system on the installation position is lowered.

4) The controller is used for collecting and analyzing data, so that the working condition of the system can be monitored, whether the system works normally or not and whether air leakage exists or not can be judged, and the fault reporting function can be realized. So that the pilot can make corresponding judgments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An aircraft high pressure air supply system monitoring device, the monitoring device comprising:

2. An aircraft high pressure air supply system monitoring device according to claim 1, wherein the first and second sensors are temperature and pressure integrated sensors.

3. An aircraft high pressure air supply system monitoring device according to claim 1 or 2, wherein the accuracy of the first and second sensors is not less than 0.01 MPa.