Thermosetting Coupling Analysis and Parameter Optimization of the Plastic Lining Pump Structure

Abstract

In order to obtain the optimum structure of the lining pump under the condition of fluid thermosetting coupling, according to the given design parameters, the structural parameters of the pump were calculated, the three-dimensional geometric model was established, and the flow field analysis was carried out by CFD; the inlet angle β b1 , outlet angle β b2 , wrap angle φ, inlet diameter D 1 , and outlet diameter D 2 of the impeller were selected as the five factors to design orthogonal experiment, and the results were analyzed by range analysis; then, the efficiency and cavitation allowance were obtained as combined parameters under the evaluation index. e displacement deformation and stress distribution under the condition of the coupling field were obtained by the fluid-solid coupling analysis, and the orthogonal experimental table of the impeller structure of the lining plastic pump was established, and then the orthogonal experimental results are analyzed to obtain the influence of each structural parameter under the condition of each evaluation index and the optimum combination parameters. e influence situation and the best combination parameters under the condition of evaluation index, taking the minimum displacement deformation and minimum stress of impeller as the reference index, and the optimum combination parameters under the condition of minimum displacement and stress were as follows: the inlet diameter D 1 was 76 mm, the outlet diameter D 2 was 252 mm, the inlet angle was 26°, the outlet angle was 24°, and the wrap angle was 115°. Finally, the 3D printing technology was used to print out the physical model to the hydraulic performance experiment verification.

The Influence of Blade Angle on the Performance of Plastic Centrifugal Pump

“…Tang et al [8] carried on the thermo-solid coupling analysis to the plastic pump. Wang and Huo [9] have carried out multiobjective optimization design and experiment on the centrifugal pump.…”

Optimization of Parameters of Plastic Lined Pump Structural Based on Fluidsolid Coupling Analysis

“…The basic parameters of the lining plastic pump are as follows: flow rate Q=100 m 3 /h, head H=80 m, rotate speed n=2900 rpm, inlet diameter of impeller =90 mm, outlet diameter =80 mm, width of impeller inlet b 1 =18 mm, outlet width b 2 =10 mm, impeller inlet angle 1 =20°, outlet angle 2 =30°, and the wrap angle =110°. According to the above parameters, the physical model of impeller and the volute-type discharge passage was established [4] , as shown in Figure 1.…”

“…Figure 3 shows the convergence of the iterative residual curve. 4 is a speed distribution diagram of the lining plastic pump [4] . It shows that the velocity inside the impeller of the plastic lined pump was generally symmetrical.…”

“…Figure 5 shows the pressure distribution of the lining plastic pump. The pressure was increasing gradually from the inlet of the impeller to its outlet [4] . The pressure field inside the impeller was axisymmetric.…”

“…The inlet diameter , outlet width 2 , vane outlet angle 2 and vane number were selected as the four factors of the orthogonal test, which were respectively represented by A, B, C and D. Each factor was set with five levels, as shown in Table 1. For the orthogonal experiment with five levels of four factors, the orthogonal table that could selected is ) 5 ( 425 L [4] . 25 groups of experimental data obtained from orthogonal test were simulated to obtain the gas volume fraction under each group of parameters.…”