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 relates to a device for testing ecological slope protection of ecologic rock and soil mechanics under simulated rainfall condition, which is mainly used for studying scouring (or erosion) characteristics test of rock and soil slope by artificial rainfall and belongs to the field of geotechnical engineering and environmental engineering. The test device comprises an automatic variable slope test rack, a test soil bin and a rainfall simulator with adjustable rain intensity, wherein a rotary support is composed of a guide rail, a crank, a crank brake, an upper shaft and a device for preventing backward sliding; a fixed bearing support is composed of a lower shaft, a bearing seat, a bending guide groove, a capstan and a lower shaft caging device; the rainfall simulator with adjustable rain intensity is disposed on the variable slope test race through a support and includes a rainfall simulator, a pressure sensor, a vibrator, a barometer, a relief valve, etc. The inventive test device has the advantages of simple structure, adjustable rain intensity, uniform rainfall, automatic online collection of air pressure, water pressure and rainfall amount of the rainfall simulatorand reduced time and labor force for loading the test soil bin.

A multi-operating mode frame type portable landslide testing device for a geomechanical model belongs to the field of geological hazard model test. The testing device comprises a frame-beam-type testing bed, a rainfall simulator, a water level regulator and a self-weight horizontal loading mechanism, wherein the frame-beam-type testing bed mainly comprises a cuboid framework, a front panel, a rear panel and a base plate; the rainfall simulator is arranged at the top of the frame-beam-type testing bed and comprises a plurality of spraying pipes and nozzles on the spraying pipes and is used for simulating rainfall in the frame-beam-type testing bed; the water level regulator comprises a left-side trough and a right-side trough respectively formed on the left and the right sides of the frame-beam-type testing bed, and a plurality of drainage holes are respectively formed on the right panel of the left-side trough and the left panel of the right-side trough and used for changing the water levels of water level simulation libraries in the left-side trough and the right-side trough; and the self-weight horizontal loading mechanism is arranged above the right-side trough and used for bearing weights, so as to exert horizontal load to the landslide model in the frame-beam-type testing bed.

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.