Overtemperature protection device of air bag deicing system

Abstract

The invention belongs to the field of aircraft air bag deicing systems, and relates to an air bag deicing system overtemperature protection device which comprises a deicing controller, a temperature sensor, a high-temperature shutoff valve, a deicing pipeline, an air source and an upper computer. And if the air bag deicing system breaks down, the deicing controller cannot control the high-temperature shutoff valve to be closed, the deicing controller sends a deicing system overtemperature alarm signal to the upper computer, and a pilot is reminded to take a measure of manually cutting off overtemperature air entraining.

Description

Technical Field

[0001] The invention relates to the field of aircraft airbag deicing systems, and in particular to an over-temperature protection device for an airbag deicing system. Background Art

[0002] Civil aircraft face various severe weather conditions on the route. The airbag deicing system ensures that the aircraft will not cause safety accidents due to icing when passing through icing cloud areas. However, when the deicing air is over-temperature, it will damage the downstream deicing pipelines and equipment, and even damage the aircraft skin, causing catastrophic accidents. Summary of the invention

[0003] The purpose of the present invention is to provide an over-temperature protection design method for an air bag de-icing system, which can automatically cut off the over-temperature side bleed air when the engine bleed air is over-temperature.

[0004] The technical solution of the present invention is:

[0005] Provided is an over-temperature protection device for an airbag deicing system, comprising a deicing controller 1, a temperature sensor 2, a high-temperature shutoff valve 3, a deicing pipeline 4, an air source 5 and a host computer 6;

[0006] The air source provides engine bleed air to the airbag deicing system through the deicing pipeline 4. The high-temperature shut-off valve 3 is arranged in the deicing pipeline 4 and is located upstream of the airbag deicing system. A temperature sensor 2 is arranged at the position of the high-temperature shut-off valve 3 to monitor the temperature in the deicing pipeline 4 and send a check signal to the deicing controller 1 and the host computer.

[0007] After being powered on, the de-icing controller 1 automatically provides power to the temperature sensor 2 and the high-temperature shut-off valve 3; the high-temperature shut-off valve 3 is in a normally open state, and the temperature sensor 3 monitors the temperature in the de-icing pipeline 4 in real time. When the bleed air temperature of the air source 5 exceeds the alarm threshold point and lasts for a first preset time, the de-icing controller 1 sends a closing signal to the high-temperature shut-off valve 3; and sends a de-icing system over-temperature alarm signal to the upper computer 6.

[0008] Furthermore, the temperature sensor 2 is located upstream of the high temperature shut-off valve 3 .

[0009] Furthermore, the threshold point is 230°C.

[0010] Furthermore, the first preset time is 5 seconds.

[0011] Furthermore, if after the high temperature shut-off valve 3 is closed, the temperature sensor 3 monitors in real time that the temperature in the deicing pipeline 4 is lower than the preset value and lasts for a second preset time, the deicing controller 1 sends an over-temperature protection completion signal to the upper computer 6 .

[0012] Further, the preset value is 180°C.

[0013] Furthermore, the second preset time is 10s.

[0014] The advantages of the present invention are as follows: when an emergency situation of over-temperature of the bleed air occurs in the airbag de-icing system, the de-icing controller can respond quickly, control the high-temperature shut-off valve to close, and complete the over-temperature protection function; if a failure occurs in the airbag de-icing system so that the de-icing controller cannot control the high-temperature shut-off valve to close, the de-icing controller sends a "de-icing system over-temperature alarm" signal to the upper computer, reminding the pilot to take measures to manually cut off the over-temperature bleed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the over-temperature protection control device for the airbag de-icing system;

[0016] Among them: 1: de-icing controller 1; 2: temperature sensor; 3: high temperature shut-off valve; 4: de-icing pipeline; 5: air source; 6: host computer. DETAILED DESCRIPTION

[0017] The disclosed examples will be more fully described with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described and these examples should not be construed as limited to the examples set forth herein. Instead, these examples are described so that this disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

[0018] Provided is an over-temperature protection device for an airbag deicing system, comprising a deicing controller 1, a temperature sensor 2, a high-temperature shutoff valve 3, a deicing pipeline 4, an air source 5 and a host computer 6;

[0019] The air source provides engine bleed air to the airbag deicing system through the deicing pipeline 4. The high-temperature shut-off valve 3 is arranged in the deicing pipeline 4 and is located upstream of the airbag deicing system. A temperature sensor 2 is arranged at the position of the high-temperature shut-off valve 3 to monitor the temperature in the deicing pipeline 4 and send a check signal to the deicing controller 1 and the host computer.

[0020] After being powered on, the de-icing controller 1 automatically provides power to the temperature sensor 2 and the high-temperature shut-off valve 3. The air source 5 is turned on to simulate the engine bleed air on the aircraft. The upper computer 6 displays: the high-temperature shut-off valve 3 is in a normally open state. The temperature sensor 3 monitors the temperature in the de-icing pipeline 4 in real time. When the bleed air temperature of the air source 5 exceeds the alarm threshold point and lasts for a first preset time, the de-icing controller 1 sends a closing signal to the high-temperature shut-off valve 3; and sends a de-icing system over-temperature alarm signal to the upper computer 6.

[0021] The threshold point is 230°C.

[0022] The first preset time is 5 seconds.

[0023] If after the high temperature shut-off valve 3 is closed, the temperature sensor 3 monitors in real time that the temperature in the deicing pipeline 4 is lower than the preset value and lasts for the second preset time, the deicing controller 1 sends an over-temperature protection completion signal to the upper computer 6 .

[0024] The default value is 180°C.

[0025] The second preset time is 10s.

[0026] The description of different advantageous arrangements has been presented for purposes of illustration and description, but the description is not intended to be exclusive or limited to examples of the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, different advantageous examples may describe different advantages over other advantageous examples. The selected example or examples are chosen and described in order to best illustrate the principles of the examples, the practical application, and to enable those of ordinary skill in the art to understand the disclosure with various examples with various modifications suitable for the particular use contemplated.

Claims

1. An over-temperature protection device for an airbag deicing system, characterized in that: It includes a de-icing controller, a temperature sensor, a high temperature shut-off valve, a de-icing pipeline, an air source and a host computer; The air source provides engine bleed air to the airbag deicing system through the deicing pipeline, and the high-temperature shut-off valve is arranged in the deicing pipeline and is located upstream of the airbag deicing system; a temperature sensor is arranged at the position of the high-temperature shut-off valve for monitoring the temperature in the deicing pipeline and sending a check signal to the deicing controller and the host computer; The de-icing controller automatically provides power to the temperature sensor and high-temperature shut-off valve after power-on; the high-temperature shut-off valve is normally open, and the temperature sensor monitors the temperature in the de-icing pipeline in real time. When the air temperature of the air source exceeds the alarm threshold point and lasts for the first preset time, the de-icing controller sends a closing signal to the high-temperature shut-off valve; and sends a de-icing system over-temperature alarm signal to the host computer.

2. An airbag deicing system over-temperature protection device according to claim 1, characterized in that: The temperature sensor is located upstream of the high temperature shutoff valve.

3. The over-temperature protection device for airbag deicing system according to claim 1, characterized in that: The threshold point is 230°C.

4. The over-temperature protection device for airbag deicing system according to claim 1, characterized in that: The first preset time is 5 seconds.

5. The over-temperature protection device for airbag deicing system according to claim 1, characterized in that: If after the high temperature shut-off valve is closed, the temperature sensor monitors in real time that the temperature in the deicing pipeline is lower than the preset value and lasts for a second preset time, the deicing controller sends an over-temperature protection completion signal to the upper computer.

6. The over-temperature protection device for airbag deicing system according to claim 1, characterized in that: The default value is 180°C.

7. An airbag deicing system over-temperature protection device according to claim 1, characterized in that: The second preset time is 10s.

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