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Method for quickly adjusting vapor pressure in mist control system

A control system, cloud and fog technology, applied in the direction of control/regulation system, fluid pressure control, non-electric variable control, etc., to achieve the effect of improving the stabilization time of water and gas pressure

Active Publication Date: 2016-06-15
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it brings another bad phenomenon. During the spraying process, there will be clouds and mist sprayed out for a while, and there will be no clouds and mist sprayed out for a while.

Method used

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  • Method for quickly adjusting vapor pressure in mist control system
  • Method for quickly adjusting vapor pressure in mist control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) First turn on the air compressor and adjust the main air valve so that the pressure at the front end of the air valve is greater than the outlet pressure on the rake, preferably much higher than the outlet pressure on the rake, that is, the pressure returned by the air pressure sensor at the outlet, for example, the initial air pressure is the air valve The front end pressure is 800kpa.

[0041] 2) Adjust the opening of the total air valve so that the pressure value of the air valve is 80% of the target air pressure, that is, 200kpa.

[0042] It should be noted that the air pressure value at this time does not make it directly reach 250kpa, because the waterway has not yet been opened, and the pressure of the water will cause the pressure of the air to rise.

[0043] 3) Turn on the 120kpa waterway and start the automatic control.

[0044] 4) if figure 2 As shown, the cloud spray tower generally has 6 water pipes and 7-8 air pressure pipes. When the water pressure ...

Embodiment 2

[0048]Similar to Example 1, the steps are as follows:

[0049] 1) First turn on the air compressor and adjust the main air valve so that the pressure at the front end of the air valve is much greater than the outlet pressure on the rake, that is, the pressure transmitted by the air pressure sensor at the outlet. For example, the initial air pressure is 800kpa at the front end of the air valve.

[0050] 2) Adjust the opening of the total air valve so that the pressure value of the air valve is 70% of the target air pressure, that is, 175kpa.

[0051] It should be noted that, as in the above-mentioned embodiment, the air pressure is not directly adjusted to 250kpa because the water path has not been opened yet, and the pressure of the water will cause the pressure of the air to rise.

[0052] 3) Turn on the 120kpa waterway and start the automatic control.

[0053] 4) if figure 2 As shown, the cloud spray tower generally has 6 water pipes and 7-8 air pressure pipes. When the w...

Embodiment 3

[0057] Similar to Example 1, it mainly includes the following steps:

[0058] 1) First turn on the air compressor and adjust the main air valve so that the pressure at the front end of the air valve is much greater than the outlet pressure on the rake, that is, the pressure transmitted by the air pressure sensor at the outlet. For example, the initial air pressure is 800kpa at the front end of the air valve.

[0059] 2) Adjust the opening of the total air valve so that the pressure value of the air valve is 90% of the target air pressure, that is, 225kpa.

[0060] It should be noted that, similar to the above-mentioned embodiment, the air pressure does not directly reach 250kpa at this time, because the water channel has not been opened yet, and the pressure of the water will cause the pressure of the air to rise.

[0061] 3) Turn on the 120kpa waterway and start the automatic control.

[0062] 4) if figure 2 As shown, the cloud spray tower generally has 6 water pipes and 7...

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Abstract

The invention provides a method for quickly adjusting vapor pressure in a mist control system, and belongs to the technical field of ground comprehensive examination automatic control. The method comprises the following steps: an air compressor is started, open degree of a main air valve is adjusted, so that an output port air pressure value reaches 70%-90% of a target air pressure value; a water pump is started, and a water pressure value of the water pump is set as a target water pressure value; a water pump frequency value is acquired in real time, when the water pump frequency value decreases from a peak value, open degree of a back-water valve arranged on a spray pipe is set as a first open degree value, when the water pump frequency value decreases continuously, the first open degree value increases gradually until the water pump frequency value is stable or the open degree value of the back-water valve reaches 100%, and at last, when the water pump frequency value is stable, the open degree of the main air valve is adjusted, so that the output port air pressure value reaches the target air pressure value. According to the invention, the method solves a problem of quickly exhausting water and problems that the water pump stops working caused by underfrequency, and sometimes contains water and sometimes not.

Description

technical field [0001] The invention belongs to the technical field of automatic control of ground comprehensive tests, and in particular relates to a method for quickly adjusting water vapor pressure in a cloud and mist control system. Background technique [0002] As a ground icing cloud simulation equipment, the cloud spray tower is a relatively complex system engineering. It is mainly to provide the cloud and fog spraying environment for the helicopter. Its main function is to conduct anti-icing / de-icing tests of the rotor system in the hovering / tethering state of the helicopter, and part of it can be used to conduct anti-icing tests on the engine on the ground. The system is mainly composed of spray equipment, water treatment system, gas treatment system, measurement and control system, fan array and bench and other systems. The water source treatment system provides high-pressure, high-temperature pure water to enter the water chamber of the spray rake through the pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/20
CPCG05D16/2093
Inventor 张弹琴梁建海林炜清彭苏雁马子生姚良
Owner CHINA HELICOPTER RES & DEV INST