GOST 27528-87 PDF

Full title and description

ГОСТ 27528-87 — Турбины гидравлические поворотно-лопастные, радиально-осевые. Типы. Основные параметры. (English title often rendered: "Kaplan, Francis axial-flow vertical-shaft hydraulic turbines. Types. Basic parameters"). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Abstract

Standard specifying type classification and basic geometric and hydraulic parameters for two families of vertical hydraulic reaction turbines — adjustable-blade axial (Kaplan / propeller) and mixed radial-axial (Francis-type) machines. It defines application ranges by head, nomenclature of runner (working wheel) types, main relative dimensions of the flow part referred to nominal runner diameter, and principal hydraulic parameters used for specification and design references. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

General information

• Status: Listed as active in several standards databases; originally issued as a USSR state standard. Note: official original validity period began 01 July 1988 (see notes below) — verify current legal status with the national standards body if required for compliance. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Publication date: Adopted as ГОСТ 27528-87 and published in official edition 1988; effective date commonly cited as 01.07.1988 (introduced from 1988, designation year 1987). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Publisher: State Committee for Standards of the USSR (Gosstandart); official printing by the Publisher of Standards (Izdatel'stvo Standartov), 1988 edition. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• ICS / categories: Energy and heat engineering — Hydraulic energy engineering (ICS / OKS classification in practice: 27.140 — hydro energy / hydraulic turbines).
• Edition / version: Original Soviet standard, designation 27528-87 (СТ СЭВ 2444-80 referenced). Official reprint/edition dated 1988. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Number of pages: Approximately 10 pages (official short-format standard). (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Scope

The standard applies to vertical hydraulic reaction turbines of two systems: adjustable-blade axial turbines (ПЛ — Kaplan/propeller family) and radial-axial turbines (РО — Francis/mixed-flow family). It establishes head ranges for turbine types, types/designations of working wheels, principal relative dimensions of the flow part (normalized to nominal runner diameter), and principal hydraulic parameters used for typical specification and classification. Intended use is for design, specification, documentation and supply descriptions of vertical hydraulic turbines. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Key topics and requirements

• Definition of turbine type codes and runner (working-wheel) type names tied to maximum allowable head (e.g., ПЛ15, ПЛ20 … for adjustable-blade axial; Р045, Р075, Р0170 … for radial-axial) and examples of conditional designations. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Tabulated values of maximum heads and recommended ranges for each runner type. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Principal relative geometric dimensions of the flow part expressed relative to nominal runner diameter (nominal Dn) — inlet/outlet diameters, hub ratios, guide-vane and runner geometry parameters. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Hydraulic performance parameters: optimal reduced speed ranges, reduced flow coefficients, maximum cavitation-safe flow coefficients and typical numbers of blades for various runner types. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)
• Examples of conditional turbine designation format and guidance for matching turbine type to site head and runner diameter. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Typical use and users

Engineers and designers of hydroturbines and hydroelectric equipment, technical specification authors, procurement and QA teams in hydroelectric power projects, standards and regulatory bodies, test labs and educational institutions involved in hydraulic machinery. The standard is used when classifying turbine equipment, preparing technical requirements and checking geometric/hydraulic parameter ranges in tender/specification documents. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Related standards

Commonly referenced alongside other hydro-energy standards such as ГОСТ 27807-88 (vertical hydraulic turbines — technical requirements and acceptance), ГОСТ 23956-80 (hydraulic turbines — terms and definitions) and standards on cavitation assessment, test methods and performance acceptance. Project specifications and national/regional standards for hydro units may also reference or incorporate these provisions.

Keywords

hydraulic turbines; Kaplan; adjustable-blade axial turbines; Francis / radial-axial turbines; runner types; nominal runner diameter; head ranges; geometric parameters; hydraulic parameters; turbine classification; ГОСТ 27528-87. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

FAQ

Q: What is this standard?

A: ГОСТ 27528-87 is a Soviet-era state standard that defines types and basic parameters for vertical hydraulic reaction turbines of the adjustable-blade axial (Kaplan/propeller family) and radial-axial (Francis/mixed-flow) systems. It provides type codes, head ranges, main relative dimensions and key hydraulic parameters. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Q: What does it cover?

A: It covers classification of working-wheel (runner) types by maximum allowable head, tabulated geometric and hydraulic parameter ranges (normalized to nominal runner diameter), guidance on dimensions of the flow part, numbers of blades, reduced speeds/flows and conditional designation formats for turbines. It is a short technical standard (≈10 pages) intended for specification and classification use. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Q: Who typically uses it?

A: Turbine designers, hydroelectric plant engineers, procurement/specification authors, testing and acceptance teams, and standards organizations — anyone preparing or checking technical requirements and equipment classification for vertical Kaplan/Francis-type hydraulic turbines. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Q: Is it current or superseded?

A: The document was adopted under the designation 27528-87 and entered into effect in 1988. Many Russian and standards databases list ГОСТ 27528-87 as an active/reference standard for turbine types, but the original official text notes a validity period starting 01.07.1988 (and an initial review date). Because standard status and legal applicability can change over time, verify current legal/mandatory status or any formal replacements with the national standards body (Rosstandart) or the relevant regulatory authority before relying on it for compliance-sensitive activities. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Q: Is it part of a series?

A: Yes — it is used together with related hydro-energy standards addressing technical requirements, acceptance testing and terminology (examples: ГОСТ 27807-88, ГОСТ 23956-80 and other standards in the OKS/ICS 27.140 hydro-energy group). The standard itself references СТ СЭВ 2444-80 and is part of the broader body of turbine and hydro-equipment standards. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)

Q: What are the key keywords?

A: Kaplan; Kaplan turbine; Francis; radial-axial; axial-flow; hydraulic turbines; runner types; nominal diameter; head range; turbine classification; ГОСТ 27528-87. (xn-----6kcbaeeywflm3c1andac1au8v.xn--p1ai)