35 results about "Rainfall simulator" patented technology

The invention belongs to the technical field of research devices for water and soil conservation, and discloses a device for establishing a water-collecting effect test for urban water permeable surfaces. The device is characterized by mainly comprising a radial flow measuring device, a rainfall infiltration test surface and a rainfall simulator. The radial flow measuring device comprises a collecting groove, a collecting tank, a synchronous micro diving pump, a radial flow tank, an adjustable water control valve and a stop watch part, and adopts a transfer type measuring method to measure radial flow. The rainfall infiltration test surface uses a combined steel plate pile as a side wall to separate out an observation surface; the rainfall simulator comprises a rainfall spray head, an adjustable flat base and a water supply system; and a base bracket can keep horizontal through adjusting three lead screws respectively, so that the device is suitable for various sloping surfaces. The water supply system mainly comprises a water control valve, a water supply tank with primary and secondary structures, a first diving pump and a second diving pump. The secondary tank is positioned in the primary tank. The device has the effects and advantages of little influence on surrounding environment, accuracy and flexibility, little water usage, and low cost.

The invention discloses a device and a method for measuring rainfall infiltration parameters in situ, including a water supply system and an infiltration area. The water supply bottle includes a water tank and a closed water tank arranged above the water tank. Water pipes, inlet pipes and outlet pipes all extend into the water tank. The raindrop simulation device includes barbed wire and a number of drip outlets installed on the wire mesh. The bottom of the water tank is connected to the drip outlets through connecting water pipes; it constitutes a water supply system that can simulate different rainfall intensities , compared with the existing rainfall simulator, it is very economical and easy to operate; the effective infiltration area adopts the method of grouting curtain to isolate the soil in the test area from the surrounding soil, avoiding the side flow of water during infiltration, It also avoids the interference of the external environment such as evapotranspiration, and can also obtain the time required for the wet soil in the research area to drain water under natural conditions.

The invention discloses an intelligent artificial rainfall simulator which comprises a circulating water supply system, an intelligent controller, a computer and software system, a distributed spraying rainfall device, a movable telescopic test frame and a wind-proof structure. An upper spray pipe, a lower spray pipe and sprayers are combined to form the distributed spraying rainfall device, the diameter of the upper spray pipe is different from that of the lower spray pipe, the diameters of the sprayers correspond to those of spray nozzles, the wind-proof structure is arranged below the rainfall device, can be fixed on the inner side of the test frame and prepared from polymer in a formula I, Mw of the high-molecular polymer is 5.115*104, and a molecular weight distribution index is 1.761.