A test device for hydraulic characteristics of a spiral water delivery coil with adjustable reel diameter

Abstract

The invention discloses a hydraulic characteristic test device of a spiral water delivery coiled pipe with adjustable coil diameters. The hydraulic characteristic test device of the spiral water delivery coiled pipe with the adjustable coil diameters comprises a reservoir (100), a water pump (101), a flow meter (102), a pipeline (107), an inlet pressure gauge (103), an outlet pressure gauge (105), a coil diameter adjustable supporting frame (104), a side blocking plate (10), a large tooth dish (20), a rotation shaft (30), precision lead screws (50), precision lead screw adjusting handles (51), a precision lead screw scale gauge (52), fan-shaped folded blocking plates (40), fan-shaped folded blocking plate folded portions (41), a pressing lever (60), discharge pipe guide rails (70) and chains (80). The hydraulic characteristic test device of the spiral water delivery coiled pipe with the adjustable coil diameters can test hydraulic characteristics of the water delivery coiled pipe with the adjustable coil diameters by utilizing sixteen precision lead screws and sixteen fan-shaped folded blocking plates to simulate a coil and adjusting the precision lead screws. The hydraulic characteristic test device of the spiral water delivery coiled pipe with the adjustable coil diameters provides experimental verification means for determine the optimum winding diameter and reducing the hydraulic loss of the spiral water delivery coiled pipe.

Description

technical field [0001] The invention belongs to the field of fluid mechanics testing, and relates to a hydraulic characteristic test device for a spiral water delivery coil, in particular to a hydraulic characteristic test device for water delivery hoses with different reel diameters for a reel-type sprinkler irrigation machine. Background technique [0002] The spiral water delivery coil of the reel sprinkler irrigation machine is automatically recovered during the spraying process, and is wound on the reel in a spiral form. When the water flow passes through the curved water delivery hose, the pressure loss is greater than that of the straight pipe. In the reel sprinkler irrigation The energy consumption of the spiral water delivery coil in the machine accounts for about 20% of the energy consumption of the whole machine, and the hydraulic characteristics of the spiral water delivery coil wound on different coil diameters are also very different. In order to reduce the ene...

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Problems solved by technology

[0003] In 2005, Zhang Min and others published a paper titled "Experimental Research on Optimum Bending Parameters of Reel Type Mobile Water-saving Sprinkler Hose". It is composed of water inlet and outlet valves, flow control valves, flowmeters, pressure gauges, and water delivery hoses wound around one circle. During the test, the water delivery hoses are wound around the plane for one circle, and the flow is controlled by adjusting the valves. Experiments with different curvature radii For the water hose, read the difference between the two pressure gauges to get the internal loss of the water hose, but this test can only be tested on a circle of the water hose in the plane. It is time-consuming and labor-intensive, and it is not suitable for the test of the spiral coil, let alone the test of the multi-turn multi-layer helically wound coil.

[0005] In addition, the national standard GB / T21400.1-2008 "Winch Sprinkler Part 1: Operating Characteristics and Laboratory and Field Test Methods" does not provide a test method for the hydraulic characteristics of the spiral coil

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