JB/T 53152-1999
Low Pressure Turbine Expander - Product Quality Grading (Internal Use)
低压透平膨胀机 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级 → 4 试验方法 → 5 抽样、评定方法 Foreword → 1 Scope → 2 Normative References → 3 Quality Grades → 4 Test Methods → 5 Sampling and Evaluation Methods
Scope
This standard specifies the quality grades, test methods, sampling and evaluation methods for low pressure turbine expanders. This standard applies to radial inflow turbine expanders (hereinafter referred to as expanders) used in air separation and liquefaction processes to obtain refrigeration through expansion work, with an inlet pressure not greater than 1.6 MPa (absolute pressure). This standard does not apply to expanders where the working medium is in vapor-liquid two-phase.
本标准规定了低压透平膨胀机的质量等级、试验方法、抽样与评定方法。本标准适用于空气分离与液化过程中膨胀作功获得冷量，进气压力不大于1.6MPa（绝压）的向心式透平膨胀机（以下简称膨胀机）。本标准不适用于工质为汽、液两相的膨胀机。
Normative References
Keywords
Application Summary AI generated
Manufacturers and users of low pressure turbine expanders apply this standard to classify product quality into qualified, first-class, and premium grades. It guides manufacturers in design and production, and helps users evaluate and select equipment. The standard ensures consistent performance and reliability in air separation and liquefaction applications.
该标准由膨胀机制造商和用户使用，用于对低压透平膨胀机进行质量等级评定。制造商依据标准划分产品为合格品、一等品和优等品，用户则以此验收设备。该标准通过统一的质量分等要求，确保了膨胀机在空气分离和液化领域的性能可靠性和市场竞争力。
AI Summary AI generated
JB/T 53152-1999 specifies quality grading requirements for low pressure turbine expanders, classifying products into qualified, first-class, and premium grades. It defines performance indicators such as isentropic efficiency, flow deviation, operating cycle, vibration, and noise. The standard also covers test methods and sampling/evaluation rules, applicable to radial inflow expanders with inlet pressure ≤1.6 MPa, excluding two-phase working media. It replaces JB/T 53152-94, with key changes including higher isentropic efficiency targets and revised compressibility factor definition.
本标准JB/T 53152-1999规定了低压透平膨胀机的产品质量分等要求，将产品分为合格品、一等品和优等品三个等级，并明确了各等级的性能指标，包括等熵效率、流量偏差、运转周期、振动和噪声等。标准还规定了试验方法和抽样评定规则，适用于进气压力不大于1.6MPa的向心式透平膨胀机，不适用于汽液两相工质。该标准替代了JB/T 53152-94，主要提高了等熵效率指标并修改了压缩性系数定义。
Key Sentences extracted from text
本标准规定了低压透平膨胀机的质量等级、试验方法、抽样与评定方法。
膨胀机产品根据其质量水平和使用价值，分为合格品、一等品和优等品三个等级。
一等品应达到国际上同类产品的较好水平，并符合图1 和表1 中一等品规定。
优等品应达到国际同类产品当代先进水平，并符合图1 和表1 中优等品规定。
判定产品质量等级，必须符合该等级全部考核项目的性能指标，按达到的最低一项指标定等级，缺项不能判定产品质量等级。
This standard specifies the quality grades, test methods, sampling and evaluation methods for low pressure turbine expanders.
Expander products are divided into three grades: qualified product, first-class product, and premium product, based on their quality level and use value.
First-class product shall reach the relatively advanced level of similar international products and comply with the provisions for first-class product in Figure 1 and Table 1.
Premium product shall reach the contemporary advanced level of similar international products and comply with the provisions for premium product in Figure 1 and Table 1.
To determine the product quality grade, all performance indicators of the grade must be met; the grade is determined by the lowest indicator achieved, and the grade cannot be determined if any item is missing.
Standard Timeline
Changes from replaced version:
- 图1中，提高了一等品、优等品的等熵效率指标
- 3.4中修改Z°为基准状态下的压缩性系数
- In Figure 1, the isentropic efficiency targets for first-class and premium products were raised.
- In clause 3.4, Z° was modified to the compressibility factor under reference conditions.