在自来水供水过程中, 存在着一些依靠水位差进行自流供水的环节。随着常规水能资源逐渐被开发殆尽, 利 用这部分微水头进行发电受到了关注。由于水厂工况基本不变、装置场地复杂多样等原因, 常规水轮机并不适用, 因此, 开发新型水轮机就势在必行。结合某自来水厂安装灯泡贯流式水轮机进行发电的案例, 通过传统水轮机设计 理论对其进行设计, 并运用计算流体动力学软件, 选择SIMPLEC 算法, 采用基于雷诺平均N2S 方程的Spalart2All2 mar as 湍流模型对该水轮机进行数值模拟和优化, 得出在不影响水厂原有水处理工艺的前提下, 在水厂安装水轮发 电机组利用微水头进行发电从而达到节能减排目的的较优方案。

During the w ater supply process, there are some certain conduit s in w hich w ater ar e dr iven by nat ur al w ater head differ ence. With the g radual depletion o f convent ional hy dr opow er resour ces, mo re and mo re attention has been paid to the pre2 v iously neg lected micro2water head hydro pow er g eneratio n. Given t he fact that the wo rking conditio n is r elatively stable and the situat ion of the installatio n sit e is complicat ed, the conventio nal hydraulic turbines may no t be applicable, thus dev elopment of new types o f tur bines that suit the r equir ements of power g ener atio n in water plants is needed. In this paper, a bulb tubular tur2 bine w as develo ped fo r the hydro power g ener ation in a water plant. The conventio nal theor y of turbine design w as used to desig n the new t ur bine. The numerica l simulation and optimizatio n of the bulb tubula r turbine w ere per formed using t he comput at ional fluid dy namics softw ar e, the SIMPLEC a lg orithm, and the Spalart2Allmar as turbulence mo del based o n the Reynolds time2aver2 ag ed N2S equations. A better design of micro2water head hy dr opow er generation in w ater plant s w as pro po sed in or der to achiev e the g oal of energ y conservat ion and emissio n r eduction w ithout posing any t hr eat to the safety and r eliability of previous w ater treatment process.

国家自然科学基金资助项目/ 大型混流式水轮机尾水管水力振动研究0 ( 51076041)