標準編號:	GB/T 8564-2023
中文名稱:	水輪發(fā)電機組安裝技術(shù)規(guī)范
英文名稱:	Technical specification for installation of hydraulic turbine-generator unit
中標分類:	F22    電力系統(tǒng)設(shè)備安裝測試
行業(yè)分類:	GB    國家標準
ICS分類:	27.140 27.140    水力工程 27.140
發(fā)布機構(gòu):	國家市場監(jiān)督管理總局 國家標準化管理委員會
發(fā)布日期:	2023-11-27
實施日期:	2023-11-27
標準狀態(tài):	valid
替代舊標準:	GB/T 8564-2003 水輪發(fā)電機組安裝技術(shù)規(guī)范
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	109000 字
翻譯價格(元):	7630.0
交付時間:	付款后 1 個工作日

Technical specification for installation of hydraulic turbine-generator units 1 Scope This document specifies requirements for the installation and commissioning of vertical mixed-flow turbine, axial-flow turbine, horizontal mixed-flow turbine, bucket turbine, speed regulating system, main valve and accessories of turbine, vertical hydraulic generator, horizontal hydraulic generator, excitation system and static frequency conversion (SFC) starting device, bulb tubular hydraulic turbine-generator unit and auxiliary equipment of hydropower station, the electrical test for installation of stator and rotor of hydraulic generator, and the start-up and trial run of hydraulic turbine-generator unit. This document applies to installation and acceptance of mixed-flow, axial-flow, bucket-type, bulb tubular hydraulic turbine-generator units and mixed-flow reversible pumped storage units. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2900.25 Electrotechnical terminology - Rotating electrical machines GB/T 2900.45 Electrotechnical terminology - Hydroelectric power plant machinery GB/T 7409.3 Excitation system for synchronous electrical machines - Technical requirements of excitation system for large and medium synchronous generators GB/T 7596 In-service quality criteria of mineral turbine oils used in power plants GB/T 9239.1 Mechanical vibration - Balance quality requirements for rotors in a constant (rigid) state - Part 1: Specification and verification of balance tolerances GB/T 9652.1 Specification of hydraulic turbine governing systems GB/T 9652.2 Testing specification of hydraulic turbine governing systems GB/T 10969 Specification for water passage components of hydraulic turbines storage pumps and pump-turbines GB 11120 Lubricating oils for turbines GB/T 11345 Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment GB/T 11805 General specifications of automatic control components (devices) and their related system for hydro turbine-generating sets GB/T 14039 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles GB/T 14478 Fundamental technical requirements for large and medium inlet valves of hydraulic turbine GB/T 17116.1 Pipe supports and hangers - Part 1: Technical specification GB/T 17116.2 Pipe supports and hangers - Part 2: Pipe attachments GB/T 17116.3 Pipe supports and hangers - Part 3: Middle connection attachments and building structure attachments GB/T 18482 Specification for start-up test of reversible pumped-storage units GB/T 20835 Guide for magnetization test of generator stator core GB/T 28546 Specification for package, transportation and storage of large and medium hydraulic units GB/T 28566 Security specification and its evaluation for generating unit interconnection GB/T 28570 Technical guide of on-line condition monitoring system for hydraulic turbine and generator units GB/T 29529 Methods of measuring and evaluating noise of pumps GB/T 29531 Methods of measuring and evaluating vibration of pumps GB/T 29711 Non-destructive testing of welds - Ultrasonic testing - Characterization of discontinuities in welds GB/T 29712 Non-destructive testing of welds - Ultrasonic testing - Acceptance levels GB/T 32899 Test code of SFC starting device for pumped storage power unit GB/T 40734 Non-destructive testing of welds - Phased array ultrasonic testing (PAUT) - Acceptance levels GB 50147 Code for construction and acceptance of high-voltage electric equipment installation engineering GB 50148 Code for construction and acceptance of power transformers oil reactor and mutual inductor GB 50150 Electric equipment installation engineering - Standard for hand-over test of electric equipment GB 50168 Standard for construction and acceptance of cable line electric equipment installation engineering GB 50171 Erection works of electrical installations - Code for construction and acceptance of switchboard outfit, complete cubicle and secondary circuit DL/T 474.1 Guide for insulation test on site - Insulation resistance, dielectric absorption ratio and polarization index test DL/T 489 Test code for static rectifier excitation system of large and medium-sized hydro-generator DL/T 490 Rule for installation and accepting test regulation of the generator excitation system DL/T 496 Guide of regulating and testing for electro-hydraulic regulating system and devices of hydraulic turbines DL/T 507 Start-up test code for hydro-generating units DL/T 563 Technical code for electro-hydraulic regulating system and unit used in hydraulic turbines DL/T 583 Specification for static rectified excitation systems for large and medium hydro generators DL/T 827 Start-up test code for bulb hydro-generating units DL/T 862 Code of installation and acceptance for automation components (devices) for hydropower plants DL/T 1013 Test guide for microprocessor excitation regulator for large and medium hydro generators DL/T 1245 Technical guide for hydraulic turbine regulating system in grid DL/T 1770 Code for filling and emptying procedures of water conveyance system for pumped storage power station DL/T 1800 Technical guide for modeling and testing of hydraulic turbine governing system DL/T 1818 Specification of reversible pump-turbine governing system test DL/T 2194 Guide for technical requirements and test on primary frequency control of hydroelectric generating units DL/T 5070 Technological guide for manufacturing, assembling and welding of metal spiral case of turbine in site DL/T 5420 Technological guide for stator assembly in site of hydraulic generators NB/T 35089 Technical specification for the ring gate of hydraulic turbines NB/T 47013.4 Nondestructive testing of pressure equipments - Part 4: Magnetic particle testing NB/T 47013.5 Nondestructive testing of pressure equipments- Part 5: Penetrant testing NB/T 47013.10 Nondestructive testing of pressure equipments - Part 10: Ultrasonic time of flight diffraction technique 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 2900.25 and GB/T 2900.45, and the following apply. 3.1 assembly process of combining parts into a complete component, following a given operating sequence, 3.2 installation operating process in which components are combined into a complete set according to the intended purpose and the equipment is secured in the specified position as required, so as to enable the intended function 3.3 reference for installation measurement and positioning reference for spatial positions based on which equipment or components are assembled and installed 3.4 deviation difference between a value and the reference value Note: For dimensional deviations, the reference value is represented by the nominal dimension and “a value” is represented by the actual size. 3.5 verticality distance of the centerline of equipment or component deviating from the plumb line, and distance of the orientation or the characteristic surface of the equipment or component deviating from the plumb line, expressed in relative values or in absolute values based on the selected position 3.6 orientation and center Orientation refers to the X and Y marker lines on a part or component; center refers to the intersection of the X-X and Y-Y marker lines on a part or component 3.7 vibration reciprocal displacement of the specified points of components in a unit relative to the equilibrium position, varying over time 3.8 run-out radial vibration of a part of the rotating spindle of a unit relative to the neighboring fixed components 3.9 barring operation of slowly rotating the shaft system of a unit by manual, mechanical or electrical means, and measuring the run-out of each characteristic part of the shaft system in order to obtain the spatial position status of the shaft system 3.10 run-out during unit turning run-out value (peak-to-peak) measured during turning of the unit 3.11 run-out during unit operation run-out value (peak-to-peak value at passband frequency) measured during normal or transient operation of the unit Note: Run-out during unit operation is also known as shaft vibration. 3.12 relative shaft vibration measurement shaft vibration measurement of a rotating shaft using a fixed part of the unit (e.g., bearing housing) as a reference 3.13 vibration in wide band frequencies algebraic difference between the peak and trough envelopes of the full waveform signal of the absolute vibration of the fixed components or the relative vibration (run-out) of the rotating components of a hydraulic turbine-generator unit in a measurement period (at confidence level of 0.97 ) 3.14 rotational frequency f0 frequency of rotation of the spindle of a hydraulic turbine-generator unit Note: f0=n/60, where n is the synchronous speed of the generator. Rotational frequency is also known as the base frequency or one-octave frequency. 3.15 polar frequency fp important parameter characterizing the fundamental vibration frequency of hydraulic generator, which is the product of the number of poles, 2P, and the rotational frequency of the hydraulic generator Note: fp=2P·f0, where P is the number of pole pairs. 3.16 idle running simply mechanical rotation behavior of hydraulic turbine-generator unit without excitation 3.17 speed no-load operation mode in which the hydraulic turbine-generator unit is put into excitation at rated speed, with the generator terminal voltage at the rated voltage and the generator output apparent power at zero 3.18 rotor roundness difference between the maximum and minimum radius of any cross section at the outer edge of the rotor pole core of hydraulic generator Note: That is, the distance between the inner and outer envelopes of the outer edge contour line of the rotor pole core, and is measured at the bump of the pole core. 3.19 stator roundness difference between the maximum and minimum radius of any cross section at the inner edge of the stator core of hydraulic generator Note: That is, the distance between the inner and outer envelopes of the inner edge contour line of the stator core. 3.20 air gap minimum radial distance between the outer edge of rotor pole and the inner edge of stator core in a generator 3.21 partial discharge (PD) electrical discharge where the insulation between conductors is only partially bridged Note 1: Partial discharge may or may not occur near the conductor. Note 2: For the purposes of this document, partial discharge (PD) refers to the phenomenon of electrical discharge in or on the partially bridged insulation of stator winding of hydraulic generator. Note 3: Partial discharge includes discharge inside insulation, slot discharge, discharge between bar layers, winding end discharge and single bar discharge along the surface. 3.22 corona partial discharge, in the main form of glow, generated by the gas medium around the insulation surface of stator bar or winding end due to ionization under a certain potential gradient Note 1: Corona is usually accompanied by luminescence and noise, and is a form of partial discharge. Note 2: For the purposes of this document, it refers to the discharge glow phenomenon that is observable in a dark environment on the insulation surface of the stator bar or on the insulation surface at the winding end, e.g., at slot end pad and bevel pad, between a bar and end hoop, bar and stator core, where the stator bar or winding is charged. 3.23 building information modeling (BIM) modeling the real information contained in a building by digital information simulation based on a building model established based on the relevant information data of the construction project 4 General requirements 4.1 Before installation of the unit equipment, the following relevant technical data shall be available: a) construction drawings and technical documents, including design reports and design modification notices; b) drawings and technical requirements of the equipment, including installation instructions, operation and maintenance instructions and technical reports; c) end-of-manufacturing quality documents of the equipment, including end-of-manufacturing inspection records, test records, acceptance certificates and material performance reports of main parts and components; and d) construction organization design or construction scheme.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General requirements 5 Installation of the vertical mixed-flow and axial-flow turbines 5.1 Installation of embedded components 5.2 Assembly of the runner 5.3 Pre-installation of water distributor 5.4 Installation of rotating components 5.5 Installation of the guide vanes and servomotors 5.6 Installation of the turbine guide bearings and spindle seals 5.7 Installation of the cylindrical valve 5.8 Installation of the hydraulic turbine accessories 6 Installation of horizontal mixed-flow turbines 6.1 Installation of embedded components 6.2 Installation of the volute and the water distributor 6.3 Installation of the bearing housing 6.4 Installation and adjustment of bearing bush 6.5 Installation of spindle 6.6 Installation of the runner and accessories 7 Installation of bucket turbines 7.1 Installation of embedded components in foundation and tailwater lining 7.2 Installation of the flow steadying grid 7.3 Installation of casing 7.4 Installation of the looped distributing pipe 7.5 Installation of the hydraulic turbine spindle 7.6 Installation of the nozzle and the deflector 7.7 Installation of the runner 7.8 Installation of the bearing of vertical bucket turbine 7.9 Installation of the horizontal bucket turbine 8 Installation and commissioning of speed regulating systems 8.1 Installation and commissioning of the oil pressure supply unit 8.2 Installation and commissioning of the regulator 8.3 Installation of the pipeline for the speed regulating system 8.4 Oil filling and field test of the speed regulating system 9 Installation of the main valves and accessories of hydraulic turbine 9.1 Installation of the embedded components in the foundation 9.2 Installation of the butterfly valve 9.3 Installation of the ball valve 9.4 Installation of the expansion joint 9.5 Installation of the bypass valve and the pipeline system equipment 9.6 Installation of the main valve operating mechanism 9.7 Field test of the main valve 10 Installation of vertical hydraulic generators 10.1 Assembly of the stator 10.2 Assembly of the rotor 10.3 Frame assembly 10.4 Bearing bush scraping and bearing pre-assembly 10.5 General installation of generator 10.6 Installation of generator accessory 11 Installation of horizontal hydraulic generator 11.1 Installation of embedded components in the foundation 11.2 Installation of bearing housing 11.3 Installation and adjustment of bearing bush 11.4 Bearing inspection and clearance adjustment 11.5 Stator installation 11.6 Rotor installation and final assembly of generator 12 Installation and commissioning of excitation system and static frequency conversion (SFC) starting device 12.1 Excitation system equipment installation 12.2 Commissioning of excitation system equipment 12.3 Installation of static frequency conversion (SFC) starting device 12.4 Commissioning test of static frequency conversion (SFC) starting device 13 Installation of bulb hydraulic turbine-generator unit 13.1 Installation of embedded components 13.2 Assembly of water distributor 13.3 Spindle and bearing assembly 13.4 Runner assembly and test 13.5 Installation of water distributor and servomotor 13.6 Spindle installation and adjustment 13.7 Installation of runner and runner chamber 13.8 Assembly of rotor 13.9 Assembly of stator 13.10 Assembly of bulb head elements 13.11 General assembly of unit 13.12 Accessory installation 14 Installation and commissioning of auxiliary equipment 14.1 Production of fittings and pipe accessories 14.2 Pipe welding 14.3 Installation of pipelines 14.4 Tests of pipes and fittings 14.5 Purge and cleaning of pipelines 14.6 Installation and commissioning of oil system equipment 14.7 Installation and commissioning of water system equipment 14.8 Installation and commissioning of gas system equipment 15 Electrical test of stator and rotor installation of hydraulic generators 15.1 Inspection of stator windings before building-in 15.2 AC withstand voltage test during stator winding installation 15.3 Electrical test of stators 15.4 Electrical test of rotor poles and accessories 15.5 Test of rotor winding 16 Startup and trial run of hydraulic turbine-generator unit 16.1 General provisions 16.2 Water filling test of units 16.3 Speed no-load test of units 16.4 Unit grid connection and load test 16.5 Startup and trial run of reversible pumped storage unit Annex A (Informative) Application of laser tracking measurement technology Annex B (Informative) List of handover materials Annex C (Informative) Hydraulic test of looped distributing pipe Annex D (Normative) Stator winding drying requirements for hydraulic generator Annex E (Informative) Sensor installation requirements for on-line monitoring device of hydraulic turbine-generator unit Annex F (Informative) Pickling, passivating and flushing of pipelines Annex G (Informative) List of typical test items for static (waterless) commissioning of hydraulic turbine-generator unit and its ancillary equipment Bibliography

水輪發(fā)電機組安裝技術(shù)規(guī)范 1 范圍 本文件規(guī)定了立式混流式、軸流式水輪機、臥式混流式水輪機、水斗式水輪機、調(diào)速系統(tǒng)、水輪機主閥及附件、立式水輪發(fā)電機、臥式水輪發(fā)電機、勵磁系統(tǒng)及靜止變頻啟動裝置(SFC)、燈泡貫流式水輪發(fā)電機組及水電站輔助設(shè)備安裝調(diào)試、水輪發(fā)電機定轉(zhuǎn)子安裝電氣試驗、水輪發(fā)電機組啟動試運行等要求。 本文件適用于混流式、軸流式、水斗式、燈泡貫流式水輪發(fā)電機組和混流可逆式抽水蓄能機組的安裝及驗收。 2 規(guī)范性引用文件 下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB/T 2900.25 電工術(shù)語 旋轉(zhuǎn)電機 GB/T 2900.45 電工術(shù)語 水電站水力機械設(shè)備 GB/T 7409.3 同步電機勵磁系統(tǒng) 大、中型同步發(fā)電機勵磁系統(tǒng)技術(shù)要求 GB/T 7596 電廠運行中礦物渦輪機油質(zhì)量 GB/T 9239.1 機械振動 恒態(tài)(剛性)轉(zhuǎn)子平衡品質(zhì)要求 第1部分：規(guī)范與平衡允差的檢驗 GB/T 9652.1 水輪機調(diào)速系統(tǒng)技術(shù)條件 GB/T 9652.2 水輪機調(diào)速系統(tǒng)試驗 GB/T 10969 水輪機、蓄能泵和水泵水輪機通流部件技術(shù)條件 GB 11120 渦輪機油 GB/T 11345 焊縫無損檢測 超聲檢測 技術(shù)、檢測等級和評定 GB/T 11805 水輪發(fā)電機組自動化元件(裝置)及其系統(tǒng)基本技術(shù)條件 GB/T 14039 液壓傳動油液固體顆粒污染等級代號 GB/T 14478 大中型水輪機進水閥門基本技術(shù)條件 GB/T 17116.1 管道支吊架 第1部分：技術(shù)規(guī)范 GB/T 17116.2 管道支吊架 第2部分：管道連接部件 GB/T 17116.3 管道支吊架 第3部分：中間連接件和建筑結(jié)構(gòu)連接件 GB/T 18482 可逆式抽水蓄能機組啟動試運行規(guī)程 GB/T 20835 發(fā)電機定子鐵心磁化試驗導(dǎo)則 GB/T 28546 大中型水電機組包裝、運輸和保管規(guī)范 GB/T 28566 發(fā)電機組并網(wǎng)安全條件及評價 GB/T 28570 水輪發(fā)電機組狀態(tài)在線監(jiān)測系統(tǒng)技術(shù)導(dǎo)則 GB/T 29529 泵的噪聲測量與評價方法 GB/T 29531泵的振動測量與評價方法 GB/T 29711 焊縫無損檢測 超聲檢測 焊縫中的顯示特征 GB/T 29712 焊縫無損檢測 超聲檢測 驗收等級 GB/T 32899 抽水蓄能機組靜止變頻啟動裝置試驗規(guī)程 GB/T 40734 焊縫無損檢測 相控陣超聲檢測 驗收等級 GB 50147 電氣裝置安裝工程 高壓電器施工及驗收規(guī)范 GB 50148 電氣裝置安裝工程 電力變壓器、油浸電抗器、互感器施工及驗收規(guī)范 GB 50150 電氣裝置安裝工程 電氣設(shè)備交接試驗標準 GB 50168 電氣裝置安裝工程 電纜線路施工及驗收標準 GB 50171 電氣裝置安裝工程 盤、柜及二次回路接線施工及驗收規(guī)范 DL/T 474.1 現(xiàn)場絕緣試驗實施導(dǎo)則 絕緣電阻、吸收比和極化指數(shù)試驗 DL/T 489 大中型水輪發(fā)電機靜止整流勵磁系統(tǒng)試驗規(guī)程 DL/T 490 發(fā)電機勵磁系統(tǒng)及裝置安裝、驗收規(guī)程 DL/T 496 水輪機電液調(diào)節(jié)系統(tǒng)及裝置調(diào)整試驗導(dǎo)則 DL/T 507 水輪發(fā)電機組啟動試驗規(guī)程 DL/T 563 水輪機電液調(diào)節(jié)系統(tǒng)及裝置技術(shù)規(guī)程 DL/T 583 大中型水輪發(fā)電機靜止整流勵磁系統(tǒng)技術(shù)條件 DL/T 827 燈泡貫流式水輪發(fā)電機組啟動試驗規(guī)程 DL/T 862 水電廠自動化元件(裝置)安裝和驗收規(guī)程 DL/T 1013 大中型水輪發(fā)電機微機勵磁調(diào)節(jié)器試驗導(dǎo)則 DL/T 1245 水輪機調(diào)節(jié)系統(tǒng)并網(wǎng)運行技術(shù)導(dǎo)則 DL/T 1770 抽水蓄能電站輸水系統(tǒng)充排水技術(shù)規(guī)程 DL/T 1800 水輪機調(diào)節(jié)系統(tǒng)建模及參數(shù)實測技術(shù)導(dǎo)則 DL/T 1818 可逆式水泵水輪機調(diào)節(jié)系統(tǒng)試驗規(guī)程 DL/T 2194 水力發(fā)電機組一次調(diào)頻技術(shù)要求及試驗導(dǎo)則 DL/T 5070 水輪機金屬蝸殼現(xiàn)場制造安裝及焊接工藝導(dǎo)則 DL/T 5420 水輪發(fā)電機定子現(xiàn)場裝配工藝導(dǎo)則 NB/T 35089 水輪機筒形閥技術(shù)規(guī)范 NB/T 47013.4 承壓設(shè)備無損檢測 第4部分：磁粉檢測 NB/T 47013.5 承壓設(shè)備無損檢測 第5部分：滲透檢測 NB/T 47013.10 承壓設(shè)備無損檢測 第10部分：衍射時差法超聲檢測 3 術(shù)語和定義 GB/T 2900.25、GB/T 2900.45界定的以及下列術(shù)語和定義適用于本文件。 3.1 組裝 assembly 將零部件按照一定的工序組合成一個完整部件的工藝過程。 3.2 安裝 installation 將部件按照設(shè)計意圖組合成套，并按要求將設(shè)備固定在規(guī)定位置，使其具有設(shè)定功能的工藝作業(yè)過程。 3.3 安裝基準 reference for installation 設(shè)備或部件組裝、安裝工藝過程中所依據(jù)的空間位置的測量和定位基準。 3.4 偏差 deviation 某值與參考值之差。 注：對于尺寸偏差，參考值是公稱尺寸，某值是實際尺寸。 3.5 垂直度 verticality 設(shè)備或部件中心線偏離鉛垂線的距離及其方位或設(shè)備部件特征面偏離鉛錘面的距離。用相對值表示或按所取位置用絕對值表示。 3.6 方位和中心 orientation and center 方位指零部件上的X、Y標記線；中心指零部件上X-X、Y-Y標記線的交叉點。 3.7 振動 vibration 機組各部件指定點相對于平衡位置隨時間的往復(fù)位移變化。 3.8 擺度 run-out 機組主軸旋轉(zhuǎn)時某部位相對于該部位鄰近固定部件的徑向振動。 3.9 盤車 barring 采用人力、機械或電氣的方式使機組軸系緩慢旋轉(zhuǎn)，測量軸系各特征部位的擺度以求得軸系空間位置狀態(tài)的作業(yè)。 3.10 盤車擺度 run-out during unit turning 機組盤車過程中測量獲得的擺度值(峰-峰值)。 3.11 運行擺度 run-out during unit operation 機組正常或暫態(tài)運行過程中測量獲得的擺度值(通頻峰-峰值)。 注：運行擺度又稱軸振動。 3.12 相對軸振動測量 relative shaft vibration measurement 以機組某固定部件(如軸承座)作為參照物對轉(zhuǎn)動軸進行的軸振動測量。 3.13 通頻振動值 vibration in wide band frequencies 水輪發(fā)電機組固定部件的絕對振動或轉(zhuǎn)動部件的相對振動(擺度)全波形信號在一個測量時段內(nèi)波峰與波谷包絡(luò)線的代數(shù)差(取0.97置信度)。 3.14 轉(zhuǎn)頻 rotational frequency f0 水輪發(fā)電機組主軸轉(zhuǎn)動的頻率。 注：f0＝n/60，n為發(fā)電機同步轉(zhuǎn)速；轉(zhuǎn)頻又稱基頻或一倍頻。 3.15 極頻 polar frequency fp 表征水輪發(fā)電機基本振動頻率的重要參數(shù)，為水輪發(fā)電機磁極數(shù)2P與轉(zhuǎn)頻的乘積。 注：fp＝2P·f0，P為磁極對數(shù)。 3.16 機組空轉(zhuǎn) idle running 水輪發(fā)電機組無勵磁下的純機械轉(zhuǎn)動行為。 3.17 機組空載 speed no-load 水輪發(fā)電機組在額定轉(zhuǎn)速下投入勵磁，發(fā)電機機端電壓為額定電壓并且發(fā)電機輸出視在功率為零的運行方式。 3.18 轉(zhuǎn)子圓度 rotor roundness 水輪發(fā)電機轉(zhuǎn)子磁極鐵心外緣任一橫截面半徑最大值與最小值之差。 注：即轉(zhuǎn)子磁極鐵心外緣輪廓線的內(nèi)外包絡(luò)線之距離；在磁極鐵心凸點測量。 3.19 定子圓度 stator roundness 水輪發(fā)電機定子鐵心內(nèi)緣任一橫截面半徑最大值與最小值之差。 注：即定子鐵心內(nèi)緣輪廓線的內(nèi)外包絡(luò)線之距離。 3.20 空氣間隙 air gap 發(fā)電機轉(zhuǎn)子磁極外緣與定子鐵心內(nèi)緣之間的最小徑向距離。 3.21 局部放電 partial discharge； PD 導(dǎo)體間絕緣僅被部分橋接的電氣放電。 注1：局部放電可在導(dǎo)體附近發(fā)生也可不在導(dǎo)體附近發(fā)生。 注2：本文件指水輪發(fā)電機定子繞組絕緣層內(nèi)部或表面發(fā)生的、其絕緣僅被部分橋接的電氣放電現(xiàn)象，簡稱局放。 注3：局放包括，絕緣內(nèi)部放電、槽放電、線棒層間放電、繞組端部放電和單根線棒沿表面放電。 3.22 電暈 corona 定子線棒絕緣表面或繞組端部絕緣表面的周圍氣體介質(zhì)，在一定電位梯度下發(fā)生電離而產(chǎn)生的以發(fā)出輝光為主要形態(tài)的局部放電。 注1：電暈通常伴隨有發(fā)光和噪音，是局部放電的一種形式。 注2：本文件指在定子線棒或繞組帶電時，在線棒絕緣表面，或在繞組端部絕緣表面(包括槽口墊塊、斜邊墊塊處，線棒與端箍間，線棒與定子鐵心間)，在黑暗環(huán)境中可見的放電輝光現(xiàn)象。 3.23 建筑信息模型 building information modeling； BIM 以建筑工程項目的各項相關(guān)信息數(shù)據(jù)作為模型的基礎(chǔ)，進行建筑模型的建立，通過數(shù)字信息仿真模擬建筑物所具有的真實信息。 4 總體要求 4.1 機組設(shè)備安裝前應(yīng)具有以下有關(guān)技術(shù)資料： a)施工圖紙及技術(shù)文件，包括設(shè)計報告、設(shè)計修改通知等； b)設(shè)備圖紙及設(shè)備技術(shù)要求，包括安裝說明書、運行維護說明書及技術(shù)報告； c)設(shè)備出廠質(zhì)量文件，包括出廠檢驗記錄、試驗記錄、驗收合格證、主要零部件的材質(zhì)性能報告； d)施工組織設(shè)計或施工方案。 4.2 機組設(shè)備安裝滿足下列基本條件： a)安裝人員應(yīng)進行安全生產(chǎn)和職業(yè)健康培訓(xùn)，從事特種作業(yè)或特種設(shè)備作業(yè)的人員應(yīng)經(jīng)考核合格取得相應(yīng)資格，安裝前應(yīng)進行技術(shù)交底和安全交底； b)安裝使用的特種設(shè)備.計量器具、試驗設(shè)備、儀器儀表、安全工器具等應(yīng)經(jīng)檢驗、檢定或校準合格，其精度等級應(yīng)滿足被檢測項目要求，并在有效期內(nèi)使用； c)安裝過程中使用的耗材和輔材應(yīng)采用對人員和環(huán)境無害的環(huán)保材料，污油、污水、廢清洗劑和垃圾雜物等廢棄物應(yīng)進行分類回收、集中或無害化處理。 4.3 安裝場地應(yīng)統(tǒng)一規(guī)劃，實施定置管理，安裝現(xiàn)場符合下列基本要求。 a)安裝環(huán)境溫度不宜低于5℃，空氣相對濕度不宜高于85％，安裝現(xiàn)場應(yīng)能防風(fēng)、防雨、防塵，并應(yīng)有足夠的照明和通風(fēng)，場內(nèi)粉塵、噪聲、高溫、光輻射等危害因素應(yīng)不超過限值，對有其他特殊環(huán)境條件要求的設(shè)備部件安裝應(yīng)按設(shè)備技術(shù)要求執(zhí)行。 b)安裝現(xiàn)場應(yīng)配置充足的滅火器材和安全防護設(shè)施，設(shè)置明顯的安全警示標志；放置危險化學(xué)品和易燃易爆物品的場所，應(yīng)做到專人使用、保管；場所周圍應(yīng)采取防火、防毒、防爆等防護措施；安裝與生產(chǎn)在同一場所并對生產(chǎn)安全有影響時，應(yīng)采取安全隔離措施。 c)施工用水源、電源、氣源和通信系統(tǒng)應(yīng)配備齊備，起重運輸機械應(yīng)具備使用條件，機組本體安裝應(yīng)在安裝間、本機組段和相鄰的機組段廠房屋頂封閉完成后進行，機組金屬結(jié)構(gòu)埋設(shè)部件組裝、安裝可根據(jù)現(xiàn)場條件確定。 d)機組設(shè)備、工器具和施工材料堆放整齊，場地應(yīng)保持清潔有序、通道暢通、工完場清。 4.4 機組設(shè)備安裝前，應(yīng)對交付安裝的土建部位進行檢查驗收，對有缺陷的部位應(yīng)處理合格，檢查驗收應(yīng)形成記錄并簽字確認。 4.5 機組設(shè)備到現(xiàn)場后應(yīng)按發(fā)貨裝箱清單進行開箱清點和檢查，檢查驗收應(yīng)形成記錄并簽字確認。機組設(shè)備開箱后其保管應(yīng)符合設(shè)備技術(shù)要求和GB/T 28546中的規(guī)定。 4.6 機組設(shè)備在安裝前應(yīng)進行全面清掃、檢查，對重要部件的主要尺寸及配合公差，應(yīng)對照出廠記錄和設(shè)備技術(shù)要求進行復(fù)核。設(shè)備檢查和缺陷處理應(yīng)有記錄和簽證。 4.7 設(shè)備基礎(chǔ)墊板埋設(shè)后應(yīng)加固牢靠，其高程允許偏差不宜超過－5mm～0mm，中心和分布位置允許偏差應(yīng)小于5mm，水平度允許偏差應(yīng)小于0.5mm/m；用于埋設(shè)部件加固調(diào)整的基礎(chǔ)螺栓、千斤頂、拉緊器、楔子板、基礎(chǔ)板等均應(yīng)點焊固定；埋設(shè)部件與混凝土結(jié)合面應(yīng)無油污、銹蝕或油漆等。 4.8 地腳螺栓的安裝，除設(shè)備技術(shù)要求另有說明外，滿足下列要求。 a)預(yù)埋地腳螺栓孔位置應(yīng)正確，孔內(nèi)壁應(yīng)清掃干凈，預(yù)埋地腳螺栓孔的中心線位置允許偏差小于5mm，孔口截面各向尺寸或深度允許偏差0mm～＋20mm，孔壁垂直度偏差應(yīng)小于預(yù)埋地腳螺栓孔孔深的0.5％，且小于10mm。