JB/T 51218-1999
Water Turbine Pump - Product Quality Grading (Internal Use)
水轮泵 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级指标 → 4 试验方法 → 5 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Quality Grade Indicators → 4 Test Methods → 5 Inspection Rules
Scope
This standard specifies the quality grade indicators, inspection and test methods, and inspection rules for water turbine pump products. This standard applies to water turbine pumps manufactured according to GB/T 6490.3.
本标准规定了水轮泵产品的质量等级指标、检验与试验方法、检验规则。本标准适用于按GB/T 6490.3 规定生产的水轮泵。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies use this standard to grade water turbine pumps into qualified, first-class, or premium levels. It ensures consistent quality assessment and helps users select pumps that meet their performance needs. This standard is important for promoting technical improvement and reliability in the water turbine pump industry.
水轮泵制造商和质检机构使用本标准来评定产品的质量等级，确保产品符合合格品、一等品或优等品的要求。它通过统一的分等指标和检验规则，帮助用户选择合适质量的水轮泵，并推动行业技术水平的提升。
AI Summary AI generated
This standard establishes a quality grading system for water turbine pump products, classifying them into qualified, first-class, and premium grades. Key technical requirements include performance indicators (efficiency, flow rate, head), reliability (mean time between failures), assembly and appearance specifications, balance tests, and hydrostatic tests. Inspection rules follow the GB/T 2828 sampling plan, with nonconformities categorized into Class A, B, and C for grading. The standard applies to water turbine pumps manufactured per GB/T 6490.3, providing a unified basis for quality control and grade assessment.
本标准规定了水轮泵产品的质量分等体系，将产品分为合格品、一等品和优等品三个等级。主要技术内容包括性能指标（效率、流量、扬程）、可靠性（平均无故障工作时间）、装配与外观要求、平衡试验、水压试验等。检验规则采用GB/T 2828的抽样方案，按A、B、C三类不合格进行判定。本标准适用于按GB/T 6490.3生产的水轮泵，为产品质量控制和等级评定提供了统一依据。
Key Sentences extracted from text
本标准规定了水轮泵产品的质量等级指标、检验与试验方法、检验规则。
按水轮泵产品的技术水平和质量水平，分为合格品、一等品和优等品。
水轮泵产品的性能应符合表1 的规定。
在规定的使用条件下，水轮泵产品的可靠性指标应符合表2 的规定。
采用逐项考核，以各类不合格达到的最低等级为产品等级。
This standard specifies the quality grade indicators, inspection and test methods, and inspection rules for water turbine pump products.
According to the technical level and quality level of water turbine pump products, they are divided into qualified products, first-class products, and premium products.
The performance of water turbine pump products shall comply with the provisions of Table 1.
Under specified operating conditions, the reliability indicators of water turbine pump products shall comply with the provisions of Table 2.
Adopt item-by-item assessment, with the lowest grade reached by any type of nonconformity as the product grade.
Standard Timeline
Changes from replaced version:
- 将原三项标准合并为一项
- 去掉了一些在使用条件下无法考核的项目，如振动、噪声
- 调整了可靠性指标和不合格分类项目
- 去掉了部分零部件加工精度考核的要求
- Merged the original three standards into one
- Removed items that cannot be assessed under usage conditions, such as vibration and noise
- Adjusted reliability indicators and nonconformity classification items
- Removed requirements for machining accuracy assessment of some parts