GB/T 8564-2003 Technical specification for installation of hydro-generator sets
Some standard content:
National Standard of the People's Republic of China
GB/T8564—2003
Replaces GB8564-1988
Specification installation of hydraulic turbine generator units20
Implementation of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
GB/T85642003
Normative reference documents
-General provisions
Vertical reaction turbine installation
Tube turbine installation
Pulse turbine installation
Installation and commissioning of speed control system
Vertical turbine generator installation
Horizontal turbine generator installation
Bulb turbine generator installation
Pipeline and accessories installation
Butterfly valve and ball valve installation
Electrical test of turbine generator set
15 Commissioning of turbine generator set
Appendix A (Informative Appendix)
Transfer Data Catalog
Appendix B (Normative Appendix) Mechanical and Hydraulic Governor Installation RequirementsAppendix C (Normative Appendix) Requirements for Drying of Hydro-Turbine Generator StatorAppendix D (Normative Appendix) Pickling, Passivation and Flushing of PipelinesAppendix E (Normative Appendix)
Appendix F (Normative Appendix)
Appendix G (Normative Appendix)
Standards for Nondestructive Testing of Welding
GB111201989 Requirements for Steam Turbine Oil
Normative Wording
GB/T8564—2003
This standard is the basis for the installation, commissioning and testing of hydro-turbine generator sets and their ancillary equipment, and is also the main content of the unit acceptance and assessment. It can be applied to the installation of various types of hydro-turbine generator sets and their ancillary equipment. This standard is a revision of GB8564-1988 "Technical Specifications for Installation of Hydro-Turbine Generator Sets" (hereinafter referred to as the original standard). The original standard is a summary of the installation technology of my country's hydroelectric generator sets and their ancillary equipment before and after 1988. Based on the original standard, this standard has been supplemented, deleted and modified according to the requirements of the installation technology of a large number of large and medium-sized hydroelectric generator sets and their ancillary equipment that have been put into production since 1989, including imported large hydroelectric generator sets, and has also referred to and absorbed some contents of relevant foreign standards. Compared with GB8564-1988 edition, this standard has the following major changes: the standard is clearly defined as a recommended standard; the applicable scope of the standard is modified, and two chapters of "scope" and "normative reference documents" are listed separately; the installation of cylinder valves, installation of water diversion pipes and bearing assembly of impulse turbines, assembly of welded generator frames, on-site assembly of generator stator frames and cores, welding of disc rotor brackets, installation of excitation systems, and trial operation of reversible pumped storage units are added; the installation of speed governors, oil filling and adjustment tests of speed control systems, pipeline welding process requirements and quality inspections are supplemented; the installation of mechanical hydraulic speed governors, exciters and permanent magnet machines is deleted from the main text, and the installation of mechanical hydraulic speed governors and stator winding drying is included in the appendix; the indicators and limits of some articles are partially adjusted and improved. Although water-cooled and evaporative-cooled stator windings have been used in some units in my country, the design and construction experience of this cooling method are not mature and the possibility of promotion in the future is not great. Therefore, these two parts are not included in this standard for the time being. This standard replaces GB85641988 from the date of implementation. Appendix B, Appendix C, and Appendix G of this standard are normative appendices. Appendix A, Appendix D, Appendix E, and Appendix F of this standard are informative appendices. The standard replaced by this standard was published on April 12, 1988. This standard is proposed and managed by the Standardization Center of the China Electricity Council. The main drafting units of this standard are China Gezhouba Group Corporation, China Hydropower Construction Group Corporation, China Three Gorges Project Development Corporation, and Harbin Electric Motor Factory Co., Ltd. The main drafters of this standard are: Fu Yuanchu, Zhang Hua, Wang Quanlong, Qin Xixiang, Liu Yongdong, Zhao Shiru, Li Zhengan, Zhang Yaozhong, Du Qichen, Zhang Lianbin, Zhao Guishan, Xu Guangtao, Gong Deping, Wang Tian, Yang Xiyin, Huang Hongyong, Zhang Chengping, Liu Yanhua, Jiang Xiaobing, Yin Longsheng, Liu Can, Xue, Tang Wanbin.
This standard is interpreted by the Standardization Center of China Electricity Council. GB/T8564—2003
1 Scope
Technical specification for installation of hydro-turbine generator sets
This standard specifies the requirements for installation, commissioning and testing of hydro-turbine generator sets and their ancillary equipment. Applicable to the installation and acceptance of hydro-generator units that meet one of the following conditions: a) Unit capacity is 15MW and above;
b) Pelton turbine, nominal runner diameter is 1.5m and above; Francis turbine, nominal runner diameter is 2.0m and above; d) Axial flow, diagonal flow, and tubular turbine, nominal runner diameter is 3.0m and above. Hydro-generator units with a unit capacity of less than 15MW and units with nominal runner diameter less than that specified in items b), c), and d) can refer to this standard for implementation.
This standard also applies to the installation and acceptance of reversible pumped storage units. 2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest versions are applicable to this standard.
GB/T3323 Radiography and quality classification of steel fusion welded butt joints GB/T7409.3 Synchronous motor excitation system Technical requirements for large and medium-sized synchronous generator excitation systems GB/T10969 Technical conditions for flow-through components of hydraulic turbines GB11120L-TSA Steam turbine oil
5 Manual ultrasonic flaw detection methods for steel welds and classification of flaw detection results GB/T11345
GB/T18482 Start-up test procedures for reversible pumped storage units GB50150
GB50168
GB50171
Electrical equipment installation project Electrical equipment installation project Cable line construction and acceptance specifications Electrical equipment installation project Panel, cabinet and secondary circuit wiring construction and acceptance specifications DL/T507
Water Procedure for starting test of turbine generator sets
DL/T679
DL/T827
JB/T4709
JB/T6204
JB/T8439
JB/T8660
3 General
Procedure for technical assessment of welders
Procedure for starting test of bulb-type hydro-turbine generator sets Welding procedure for steel pressure vessels
Specification for stator insulation withstand voltage test of large high-voltage AC motors Technical requirements for anti-corona in high-altitude areas when using high-voltage motors Specification for packaging, transportation and storage of hydro-turbine generator sets 4
GB/T8564—2003
3.1 The installation of turbine generator sets shall be carried out in accordance with the requirements of this specification based on the unit installation drawings and relevant technical documents approved by the design unit and the manufacturer. If the manufacturer has special requirements, it should be carried out in accordance with the requirements of the manufacturer's relevant technical documents. Supplementary regulations should be formulated for matters not covered by this specification and the manufacturer's technical documents. When the manufacturer's technical requirements conflict with this specification, they are generally carried out in accordance with the manufacturer's requirements or resolved through consultation with the manufacturer. 3.2 In addition to implementing this standard, the installation project of generator sets and their ancillary equipment shall also comply with the relevant requirements of the current safety protection, environmental protection, fire protection and other regulations issued by the state and relevant departments. 3.3 The equipment of hydro-turbine generator sets shall comply with the current national technical standards and order contract provisions. After the equipment arrives at the acceptance site, the installation unit may, at the owner's request, participate in the unpacking and inventory of the equipment, check the equipment supply list and random packing list, and implement it in accordance with JB/T866C.
The following documents shall serve as important basis for the installation and quality acceptance of the unit and its auxiliary equipment: a) Equipment installation, operation and maintenance instructions and technical documents; b) All random drawings and materials (including equipment assembly drawings and component structure drawings); c) Equipment factory certificate, inspection and test records; d) Material performance certification of major component materials. 3.4 Before installing the unit, you should carefully read and be familiar with the manufacturer's design drawings, factory inspection records and relevant technical documents, and make a reasonable construction organization design that conforms to the actual construction. 3.5 Before installing the unit, you should read the civil engineering design drawings related to the installation and participate in the acceptance of the civil engineering parts delivered for installation. Defective parts should be treated before installation. 3.6 All materials used for the installation of hydro-generator sets shall meet the design requirements. For the main materials, there must be inspection and factory certificates.
3.7 The installation site should be planned uniformly. And it should meet the following requirements: a) The installation site should be windproof, rainproof and dustproof. The installation of the unit should be carried out after the roof of the plant building of this unit section and the adjacent unit section is closed:
b) The temperature of the installation site is generally not lower than 5C, and the relative humidity of the air is not higher than 85%; the installation of equipment and components that require temperature, humidity and other special conditions shall be carried out in accordance with the design regulations: The construction site should have sufficient lighting:
The construction site must have construction safety protection facilities that meet the requirements. Places where flammable and explosive items are placed must have corresponding safety regulations:
e) Civilized production should be carried out, installation equipment, tools and construction materials should be neatly stacked, the site should be kept clean, the passages should be unobstructed, and the site should be cleared after work.
3.8After the installation of the hydro-generator set is completed, it shall be started and tested in accordance with the requirements of this standard and DLT507 to comprehensively inspect the design, unit manufacturing and installation quality. After the test run is qualified, the unit startup phase acceptance shall be carried out, and the relevant materials shall be handed over in accordance with the requirements of Appendix A.
4 General provisions
4.1The equipment shall be fully cleaned and inspected before installation, and the main dimensions and matching tolerances of important components shall be checked according to the requirements of the drawings 5
GB/T85642003
and compared with the factory records.
Equipment inspection and defect handling shall be recorded and signed. The whole-packed equipment delivered with the manufacturer's quality assurance may not be disassembled during the warranty period. 4.2The elevation deviation of the buried equipment foundation pad shall generally not exceed -5mm~0mm, the center and distribution position deviation shall generally not exceed 10mm, and the horizontal deviation shall generally not exceed 1mm/m. 4.3The buried components shall be reinforced after installation. The foundation bolts, jacks, tensioners, wedge plates, foundation plates, etc. should all be spot welded and fixed. The interface between the embedded parts and the concrete should be free of oil stains and severe rust. 4.4 The installation of anchor bolts should meet the following requirements: a) Check that the anchor bolt holes are in the correct position and the inner wall of the hole should be roughened and cleaned. The deviation between the center line of the bolt hole and the center line of the foundation shall not exceed 10mm; the elevation and the depth of the bolt hole shall meet the design requirements; the verticality deviation of the bolt hole wall shall not exceed L/200 (L is the length of the anchor bolt in mm, the same below), and shall be less than 10mm: b) The center and elevation of the second-phase concrete embedded and sleeve-type anchor bolts shall meet the design requirements, the center deviation shall not exceed 2mm, the elevation deviation shall not exceed 0mm~+3mm, and the verticality deviation shall be less than L/450: When the anchor bolts use pre-prepared steel bars and weld screws on them, the following requirements shall be met: 1) The material of the pre-embedded steel bars shall be basically consistent with that of the anchor bolts: the cross-sectional area of the pre-embedded steel bars shall be larger than the cross-sectional area of the bolts, and the pre-embedded steel bars shall be vertical; 2) When the bolts and embedded steel bars are welded on both sides, the welding length shall not be less than 5 times the diameter of the anchor bolt; 3) When single-sided welding is used, the welding length shall not be less than 10 times the diameter of the anchor bolt. 4.5 Wedge plates should be used in pairs, with an overlap length of more than 2/3. For wedge plates that bear important components, a 0.05mm feeler gauge should be used to check the contact after installation, and the contact length on each side should be greater than 70%. 4.6 Equipment installation should be carried out after the foundation concrete strength reaches 70% of the design value. The second phase concrete of the foundation plate should be poured densely. 4.7 The combined surface of the equipment should be smooth and free of burrs. The joint gap is checked with a 0.05mm feeler gauge, and it cannot pass; local gaps are allowed, and are checked with a 0.10mm feeler gauge. The depth should not exceed 1/3 of the width of the combined surface, and the total length should not exceed 20% of the circumference; there should be no gap around the combined bolts and pins. The misalignment of the installation surface at the combined joint is generally not more than 0.10mm. 4.8 Pay attention to the matching marks when assembling components. When installing multiple units, each unit should be assembled with components marked with the same series number.
Similar parts or measuring points are numbered in the order of the installation record sheet. For fixed parts, they should start from +Y and be numbered clockwise (from the generator end, the same below): For rotating parts, they should start from the position of the rotor pole 1. Except for the turning measuring points on the shaft, which are numbered counterclockwise, the rest are numbered clockwise: It should be noted whether the manufacturer's numbering regulations are consistent with the above. 4.9 For connecting bolts with preload requirements, the preload deviation shall not exceed 10% of the specified value. When the manufacturer has no clear requirements, the preload force shall not be less than 2 times the design working pressure and shall not exceed 3/4 of the yield strength of the material. When installing fine-thread connecting bolts, the threads shall be lubricated; the connecting bolts shall be tightened evenly in batches: For bolts tightened in a hot state, the preload of about 20% of the bolts shall be checked at room temperature after tightening. After each component is installed and positioned, the pin holes shall be drilled and pins shall be installed according to the design requirements. Bolts, nuts, and pins shall be locked firmly according to the design requirements. 4.10 General measurement of the unit shall meet the following requirements: 6
All measuring tools shall be regularly inspected and calibrated by qualified metrology and inspection departments: a
GB/T85642003
The error of X, Y reference line marks and elevation points used for unit installation relative to the plant reference point shall not exceed ZImm; b)
The measurement error of the elevation difference of each part shall not exceed 20.5mm: d) The horizontal measurement error shall not exceed 0.02mm/m; The diameter of the steel wire used for center measurement is generally 0.3mm~0.4mm, and its tensile stress shall not be less than 1200MPa; e
f) Regardless of the method used to measure the center or roundness of the unit, the measurement error shall generally not be greater than 0.05mm; g) Attention should be paid to the influence of temperature changes on measurement accuracy, and the measured values should be corrected according to temperature changes during measurement. 4.11 When the pressure-bearing equipment and connectors manufactured on site undergo strength water pressure test, the test pressure is 1.5 times the rated working pressure, but the minimum pressure shall not be less than 0.4MPa, and it shall be maintained for 10 minutes, without leakage, cracks and other abnormal phenomena. When the equipment and its connectors undergo tightness pressure test, the test pressure is 1.25 times the actual working pressure, and it shall be maintained for 30 minutes: no leakage: When conducting tightness test, the test pressure is the actual working pressure, and it shall be maintained for 8 hours, without leakage. A single cooler shall be subjected to water pressure test according to the test pressure required by the design. When there is no design requirement, the test pressure is generally 2 times the working pressure, but not less than 0.4Mpa, and it shall be maintained for 30 minutes, without leakage. 4.12 When the equipment container undergoes kerosene leakage test, it shall be maintained for at least 4 hours, and there shall be no leakage. After the leakage test, the container should generally not be disassembled.
4.13 The single key shall be checked with the keyway, and its tolerance shall meet the design requirements. Paired keys should be checked in pairs, and the parallelism should meet the design requirements.
4.14 The welding of the unit and its ancillary equipment should meet the following requirements: a) Welders participating in the welding of various parts of the unit and its ancillary equipment should undergo regular special training and assessment in accordance with the requirements of DL/T679 or the manufacturer, and they can work with certificates after passing the examination: b) The length and height of all welding welds should meet the requirements of the drawings, and the welding quality should be inspected according to the requirements of the design drawings; c) For the welding of important parts, the welding process procedures formulated after the welding process assessment or the welding process regulations specified by the manufacturer should be followed.
4.15 The brand of turbine oil used in the unit and speed control system should meet the design requirements, and all indicators should meet the requirements of GB11120, see Appendix F.
4.16 All monitoring devices and automation components of the unit should be inspected and tested according to the factory technical conditions and pass the test. 4.17 The components of the hydro-turbine generator set must be kept clean during assembly and final assembly as well as after installation. After installation, the inside and outside of the unit must be carefully cleaned and inspected, and no debris or unclean areas are allowed. 4.18 The anti-corrosion paint of each component of the turbine generator set shall meet the following requirements. Each component of the unit shall be subjected to surface pretreatment and paint protection in the factory according to the requirements of the design drawings: a)
b) Components that need to be sprayed with surface topcoat on site (including on-site welds) shall be sprayed according to the design requirements. If the spray color is inconsistent with the decoration of the factory building, except for the color of the pipeline, appropriate changes can be made: When the surface coating of the component is partially damaged during the installation process, it shall be repaired according to the requirements of the original coating of the component: The coating applied on site shall be uniform, without bubbles, wrinkles, and the color shall be consistent; d)
Components that need to be painted on site according to the contract or special requirements shall comply with the regulations e)
5 Vertical reaction turbine installation
GB/T85642003
5.1 Installation of embedded components
5.1.1 The installation of the steel lining at the pier end of the tailwater pipe shall meet the following requirements: a) The distance deviation from the top of the nose steel lining to the X-axis line of the unit is 230mm; the distance deviation from the side of the nose steel lining to the Y-axis line of the unit is Z15mm; the elevation deviation of the top (or bottom) of the nose steel lining is 210mm; the verticality deviation of the nose steel lining is 10mm.
The installation of tailwater pipe lining, the allowable deviation shall comply with the requirements of Table 1 Table 1 Allowable deviation of tailwater pipe lining installation
Diameter of runner D
Elbow section sizewwW.bzxz.Net
Lower pipe opening of elbow
Upper pipe opening of elbow and cone
Center and orientation
Upper pipe opening of elbow and cone
Diameter of cone pipe opening
Difference in circumference of inner wall of adjacent pipe openings of cone
Center of lower pipe opening of cone without elbow lining
Requirements.
D<3000
3000
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