Single-loop sand and dust material circulation and sand and dust concentration control system and method for sand and dust blowing environment simulation system
A technology for environmental simulation and control system, which is applied in chemical instruments and methods, mixing methods, and devices in which the axial direction of the swirl can be reversed. Simplification, simple control, energy saving effect
Inactive Publication Date: 2011-04-20
BEIHANG UNIV
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Problems solved by technology
In this case, it brings difficulties in space layout and wastes construction cost
[0010] -Because the pneumatic transmission system driven by compressed air is used in the feeding system, a large amount of compressed air enters the circulating air duct 1 during the feeding process. In order to keep the internal pressure of the circulating air duct 1 stable, a pressure regulating fan 6 is required control, which consumes additional energy
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[0047] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0048] Sand blowing and dust blowing environment simulation equipment generally includes circulating air ducts, sand and dust material systems, temperature control systems, and humidity control systems. Among them, the circulating air duct is used to provide the place where the test piece is in the sand blowing and dust blowing environment; the sand and dust material system is used to realize the sand and dust concentration of the test environment, and the centrifugal force in the sand and dust material system is controlled by the signal of the wind speed and concentration in the test section. The closed-loop control of the fan and the screw feeder can effectively control the dust concentration in the circulating air duct; the temperature control system, the humidity control system, and the air duct pressure control system form an air conditioni...
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The invention discloses a single-loop sand and dust material circulation and concentration control system, which comprises an enforced sand and dust suction wind passage, an array cyclone separator, a centrifugal fan, a charging bin, a spiral feeding device and a mixer. The devices are connected into a single-loop sand and dust material circulation system through a pipeline; and an electric rotating motor of the centrifugal fan and an electric rotating motor of the spiral feeding device are subjected to enclosed loop feedback control through wind speed and sand and dust concentration signals from a test section so as to realize a sand and dust concentration control system. In the system, the returning process and the feeding process are realized synchronously, the returning process and the feeding process are realized in a single loop, and the system is compact in structure, small in occupied space and low in energy consumption, and is particularly suitable for occasions with small spatial layout and low system energy consumption.
Description
technical field [0001] The invention relates to a single-loop sand and dust material circulation and sand and dust concentration control system and method for a sand blowing and dust blowing environment simulation system. Background technique [0002] Sand and dust environment is an important environmental factor that causes many engineering and / or weapon equipment to fail, and its main damage types are: erosion, abrasion, corrosion and penetration, etc. Dust blowing and sand blowing tests are important means to test the environmental adaptability and environmental reliability of vehicles, aircraft, electrical equipment, and military equipment in deserts, arid areas, and sandy weather conditions. [0003] The existing sand and dust material circulation and sand and dust concentration control system includes three parts: the feeding system, the feeding and feeding system, and the sand and dust concentration measurement and adjustment system. figure 1 Shown is a system announ...
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IPC IPC(8): B01F3/06B04C5/24B01F23/30
Inventor 王浚李运泽明章鹏张华巩萌萌
Owner BEIHANG UNIV