一种高效闭式小流量模型级制造技术

本实用新型专利技术涉及气体压缩设备，具体地说是一种应用于离心压缩机中的高效闭式小流量模型级，位于压缩机内，包含叶轮、无叶扩压器、弯道及回流器，叶轮位于模型级的入口位置，在叶轮出口设有无叶扩压器，回流器位于模型级的出口位置，无叶扩压器与回流器之间通过弯道相连通；所述叶轮为二元叶轮。本实用新型专利技术的叶轮便于加工，叶片几何型线精度高，有利于保证级性能；模型级的径向及轴向尺寸均小于同类模型级，有利于缩小机组的径向及轴向尺寸，减少了产品的制造成本；使得机组结构紧凑，便于布置；增大了转子稳定性，进而提高机组的运行稳定性；模型级可用于单、多级离心式压缩机，可有效提高机组的性能，减少机组的运行成本。（*该技术在2021年保护过期，可自由使用*）

An efficient closed small flow model level

The utility model relates to a gas compression equipment, in particular, closed model stage with small flow for a centrifugal compressor, in the compressor, comprising an impeller, vaneless diffuser, bend and return device, entrance position impeller is positioned at the model level, with vaneless diffuser at the impeller outlet. Is located in the reflux model stage exit location, vaneless diffuser and return channel are communicated through the curve; the impeller impeller for the two yuan. The utility model of the impeller blade geometry line type easy machining, high precision, to ensure the performance of radial and axial size; the level of the model were less than similar models, reduce the radial and axial dimensions of the unit, reducing the manufacturing cost of the product; the unit has the advantages of compact structure, convenient arrangement; increase the stability of the rotor. In order to improve the operation stability of the unit; the model can be used in single stage and multistage centrifugal compressor, which can effectively improve the performance of the unit, to reduce the operation cost of the unit.

【技术实现步骤摘要】

【技术保护点】
１．一种高效闭式小流量模型级，位于压缩机内，其特征在于：包含叶轮（１）、无叶扩压器（２）、回流器（３）及弯道（４），叶轮（１）位于模型级的入口位置（５），在叶轮（１）的出口设有无叶扩压器（２），回流器（３）位于模型级的出口位置（６），所述无叶扩压器（２）与回流器（３）之间通过弯道（４）相连通；所述叶轮（１）为二元叶轮。

【技术特征摘要】

【专利技术属性】
技术研发人员：么立新，杨树华，刘长胜，孙玉莹，裴威，刘鹏，赵强，
申请(专利权)人：沈阳鼓风机集团股份有限公司，沈阳透平机械股份有限公司，
类型：实用新型
国别省市：89