新鍋爐吹管方案Commissioning manual for boiler steam blowing

1、Commissioning proposal of Mariveles Power Station CNEEC-NEPRI NEPRI編 號(hào)(NO.)： 密 級(jí)(SECURITY)： 版 本(VERSION)： 菲律賓馬利萬(wàn)斯2300MW燃煤電廠(chǎng)工程鍋爐吹管調(diào)試方案Commissioning manual for boiler steam blowing of the 2300MW coal fired power project of mariveles power station in philippines中國(guó)電力工程有限公司遼寧東科電力有限公司(東北電力科學(xué)研究院有限公司)China

2、National Electric Engineering CO.LTD (CNEEC)Northeast Electric Power Research Institute (NEPRI)2012年2月10日Feb 10, 2012Liaoning Dongke Electric Co., Ltd (Northeast Electric Power Research Institute Co., Ltd) Page 24 of 251 設(shè)備及系統(tǒng)概述1 Equipment and system菲律賓馬利萬(wàn)斯2300MW燃煤電廠(chǎng)鍋爐為哈爾濱鍋爐廠(chǎng)生產(chǎn)的亞臨界壓力一次中間再熱汽包爐，鍋爐采用“”

3、型布置，四角切向燃燒，平衡通風(fēng)、固態(tài)排渣、露天布置、全鋼構(gòu)架，懸吊結(jié)構(gòu)。制粉系統(tǒng)為正壓直吹式制粉系統(tǒng)，配置6臺(tái)沈陽(yáng)施道克電力設(shè)備有限公司生產(chǎn)的稱(chēng)重式給煤機(jī)，6臺(tái)由長(zhǎng)春發(fā)電設(shè)備總廠(chǎng)產(chǎn)的中速磨煤機(jī)，每臺(tái)磨的出口由四根煤粉管接至爐膛四角的同一層煤粉噴嘴。 The boiler of Philippine Marie Vance 2300MW coal-fired power plant is produced by Harbin Boiler Company of china. The boiler adopt once-through -type with sub-critical pressur

4、e, Tangentially Fired, balanced draft, dry slag, steel structure, complete hanging construction. The boiler equipped with direct-fired system which including 6 sets of coal feeder and coal milled. And the outlet for each mill connected with four pulverized coal transportation pipes to four burners o

5、n the same layer根據(jù)本工程鍋爐的實(shí)際情況，設(shè)計(jì)將原A層4臺(tái)煤粉燃燒器改造為兼有微油點(diǎn)火功能的微油燃燒器。Base the real situation of the boiler, the A layer of coal burner are equipped with micro-oil ignition system 鍋爐容量和主要參數(shù)The capacity and parameters of boiler鍋爐最大連續(xù)蒸發(fā)量Boiler maximum continuous evaporation1097t/h過(guò)熱器出口蒸汽壓力Superheater outlet ste

6、am pressure17.50MPa過(guò)熱器出口蒸汽溫度Superheater outlet steam temperature541再熱蒸汽流量Steam quality of reheater913.1t/h再熱器進(jìn)口蒸汽壓力Reheater inlet steam pressure3.779MPa再熱器出口蒸汽壓力Reheater outlet steam pressure3.579MPa再熱器進(jìn)口蒸汽溫度Reheater inlet steam temperature333.1再熱器出口蒸汽溫度Reheater outlet steam temperature541省煤器進(jìn)口給水溫度E

7、conomizer inlet feed water temperature279.1煤質(zhì)特性分析表Analysis of coal characteristics名稱(chēng)name符號(hào)Symbol單位Unit設(shè)計(jì)煤種Design coal type校核煤種Checked coal最小Min典型Typical最大Max最小Min典型Typical最大Max發(fā)熱量Calorific value高位發(fā)熱量 higher heat value(HHV)Qgarkcal/kg3,8004,0004,2003,9004,1004,400低位發(fā)熱量 low heat value(LHV)Qnet,arkcal/

8、kg3,4153,6153,8153,6003,7504,100哈氏可磨系數(shù)Hardgrove indexHGI556070435070 密度DensityTon/m30.800.850.900.800.850.90工業(yè)分析proximate analysis收到基水分AarMar%38.040.043.0233542空氣干燥機(jī)水分MadMad%25.027.030.0162328收到基灰分AarAar%1.52.03.02410空氣干燥機(jī)灰分AadAad%n/an/an/a34.612空氣干燥機(jī)硫SadSad%0.10.150.30.080.180.35空氣干燥基揮發(fā)份VadVad%35.0

9、37.045.03541.7545空氣干燥基固定碳FCadFCad%28.034.039.02835.7540元素分析Element analysis干燥基碳CdCd%68.071.575.061.870.272.7干燥基氫HdHd%4.05.06.044.7882 編制依據(jù)2 Compilation basis2.1 電力行業(yè)標(biāo)準(zhǔn)DL/T5437-2009火力發(fā)電廠(chǎng)建設(shè)工程啟動(dòng)試運(yùn)及驗(yàn)收規(guī)程Electric Power Industry Standard DL/T5437-2009 thermal power plant construction project started trial

10、operation and acceptance of order .2.2 電力部建設(shè)協(xié)調(diào)司建質(zhì)199640號(hào)火電工程啟動(dòng)調(diào)試工作規(guī)定Ministry of Electric Power Division of the coordinated construction of quality 1996 40 thermal power project to start commissioning rule2.3 電力部建設(shè)協(xié)調(diào)司建質(zhì)1996111號(hào)火電工程調(diào)整試運(yùn)質(zhì)量檢驗(yàn)及評(píng)定標(biāo)準(zhǔn)Ministry of Electric Power Division of the coordinated co

11、nstruction of quality 1996 No. 111 adjustment of trial operation of thermal power engineering inspection and assessment of quality standards2.4 電力行業(yè)標(biāo)準(zhǔn)DL 5009.1-2002電力建設(shè)安全工作規(guī)程(火力發(fā)電廠(chǎng)部分)2.5 Electric Power Industry Standard of the DL 5009.1-2002 power construction safe work procedures ( thermal power pl

12、ant part)2.6 國(guó)家建設(shè)部建標(biāo)2006102號(hào)中華人民共和國(guó)工程建設(shè)標(biāo)準(zhǔn)強(qiáng)制性條文(電力工程部分)Ministry of Construction to build the labeled 2006 No. 102, the mandatory provisions of the Engineering Construction Standard of the People s Republic of China ( electrical engineering section )2.7 國(guó)家電網(wǎng)生2007883號(hào)國(guó)家電網(wǎng)公司發(fā)電廠(chǎng)重大反事故措施(試行)The national gr

13、id of Health 2007 883 power plants in the State Grid Corporation of the major anti- accident measures (Trial) 2.8 國(guó)家電網(wǎng)生技2005400號(hào)國(guó)家電網(wǎng)公司十八項(xiàng)電網(wǎng)重大反事故措施(試行)State Grid students 2005 No. 400 , State Grid Corporation of 18 grid of major anti-accident measures (Trial)2.9 電力部電綜1998179號(hào)火電機(jī)組啟動(dòng)驗(yàn)收性能試驗(yàn)導(dǎo)則Ministry of

14、 Power electric Comprehensive 1998 In 179, the thermal power units start acceptance performance test guidelines . 2.10 電力部電綜1998 179號(hào)火電機(jī)組啟動(dòng)蒸汽吹管導(dǎo)則Ministry of Electric Power electrical comprehensive 1998 No. 179, start steam of thermal power units blowpipe Guide2.11 中電建協(xié)工20066號(hào)電力工程達(dá)標(biāo)投產(chǎn)管理辦法In the elect

15、rical construction co- workers 2006 on the 6th power engineering standard production management approach 2.12 國(guó)家電力公司國(guó)電電源200249號(hào)電力建設(shè)安全健康與環(huán)境管理工作規(guī)定State Power Corporation , State Power supply 2002 49 power construction safety and health and environmental management work rules2.13 東北電力科學(xué)研究院有限公司質(zhì)量管理標(biāo)準(zhǔn)Nor

16、theast Electric Power Research Institute Co., Ltd. Quality Management Standards2.14 哈爾濱鍋爐廠(chǎng)有限責(zé)任公司技術(shù)參考資料及鍋爐相關(guān)設(shè)備廠(chǎng)家資料Harbin Boiler Factory Co., Ltd. technical reference material and boiler related equipment manufacturers information3 調(diào)試目的及范圍3. the purpose and scope of commissioning鍋爐蒸汽管路吹洗的目的在于利用蒸汽產(chǎn)生的動(dòng)能

17、，清除在制造、運(yùn)輸、保管、安裝過(guò)程中清理不善殘留在鍋爐過(guò)熱器、再熱器系統(tǒng)及蒸汽管道中的各種雜物（沙粒、石塊、鐵屑、焊渣、氧化鐵皮及其它雜物等），防止機(jī)組運(yùn)行中過(guò)再熱器爆管和汽機(jī)通流部分損傷，改善機(jī)組啟動(dòng)后汽水品質(zhì)，提高機(jī)組的安全性和經(jīng)濟(jì)性。The purpose of boiler steam blowing is to clean the sand, stone, iron, welding slag and other solid particles inner the pipe of superheater and reheater that produced during manufa

18、cturing, transportation, storage and installation and to improve the steam quality which can eliminate the turbine blade damage caused by poor steam quality and improve the unit safety and economic.3.1 蒸汽吹管包括如下系統(tǒng)：過(guò)熱器及主蒸汽管道；再熱器及再熱器冷段和熱段管道。The range includes following systems: superheater, main steam

19、pipes, reheater, cold section and hot section pipes of reheater. 3.2 以下部位管道不進(jìn)行吹管，由安裝公司采用機(jī)械方法進(jìn)行清理：自動(dòng)主汽門(mén)后調(diào)速汽門(mén)前的導(dǎo)管；高排逆止門(mén)前的高缸排汽管道；高壓旁路管道；低壓旁路管道。Pipe blowing is not carried out for pipes at following parts and these pipes are cleaned by adopting mechanical methods: Steam connecting pipes after high and m

20、iddle pressure of main steam stop valve and reheater stopvalve; High cylinder steam discharge pipes at front of high pressure discharge check valve; Inlet and outlet pipes of low pressure bypass; Inlet and outlet pipes of high pressure bypass; 4 調(diào)試程序與工藝4 Commissioning procedures and processes4.1 吹管的

21、方式4.1 The blowing way采用降壓吹管方式進(jìn)行吹管。The pipe blowing is carried out by adopting the mode of pressure-reducing blowing. 4.2 吹管參數(shù)選擇Control and selection of pipe blowing parameters吹管系數(shù)計(jì)算公式如下：The blowing coefficient is calculated as following 或 式中沖管時(shí)該區(qū)段的壓降，MPathe pressure drop of blowing area during steam

22、 blowing，MPa額定工況時(shí)該區(qū)段壓降，MPathe pressure drop of blowing area at rated condition，MPa沖管參數(shù)對(duì)應(yīng)流量，kg/sthe corresponding steam flow during steam blowing，kg/s沖管參數(shù)對(duì)應(yīng)蒸汽比容，m3/kgthe corresponding steam specific volume during steam blowing，m3/kg沖管參數(shù)對(duì)應(yīng)流速，m/sthe corresponding steam velocity during steam blowing，m/s

23、額定參數(shù)對(duì)應(yīng)流量，kg/sthe corresponding steam flow at rated condition，kg/s額定參數(shù)對(duì)應(yīng)蒸汽比容，m3/kgthe corresponding steam specific volume at rated condition，m3/kg額定參數(shù)對(duì)應(yīng)流速，m/sthe corresponding steam velocity at rated condition，m/s根據(jù)計(jì)算，取過(guò)熱器出口參數(shù)為壓力4.5MPa,汽溫 400時(shí)，即可以保證蒸汽吹管系數(shù)大于 1.0,具體數(shù)據(jù)如下表1所示：Acording to the caculation，w

24、hen the outlet pressure of the superheater more than 4.5MPa，the steam temperature is about 400。 Pipe blowing coefficient will be larger than 1。The detail dates is selected as following table1：Table 1 Table of steam pipe blowling parameters表1 蒸汽吹管控制參數(shù)一覽表Steam blowing Range吹 管 范 圍 Control parameter控 制

25、 參 數(shù)Temporary control valve臨時(shí)控制門(mén)Superheater、reheatersystem過(guò)熱、再熱器系統(tǒng)The pressure of the drum when temporary control valve is opened ：6-6.5MPa開(kāi)門(mén)汽包壓力：66.5MPaThe pressure of the drum when temporary control valve is closed ：44.5MPa關(guān)門(mén)汽包壓力：44.5MPaThe superheater steam tempreture：400450過(guò)熱汽溫：400450The tempera

26、ture of reheater：450480再熱汽溫：450480Temporary control valve1、2 4.3 蒸汽吹管的流程4.3 Steam blowing process本次鍋爐吹管采用一階段吹洗，吹洗流程如下：過(guò)熱器主蒸汽管道機(jī)高壓主汽門(mén)臨時(shí)管道吹管臨時(shí)控制門(mén)臨時(shí)管道集粒器再熱冷段管道再熱器再熱熱段管道機(jī)中壓主汽門(mén)臨時(shí)管道靶板消音器排大氣；The pipe blowing process is as followingSuperheatermain steam pipemain steam stop valvetemporary pipetemporary contr

27、ol valve used to blowingtemporary pipeparticles collecterthe pipe of lower temperature reheaterhot reheater pipereheater stop valvetemporary pipetarget platesilenceratmosphere4.4 吹管前的必備條件4.4 The necessary condition before blowing4.4.1 鍋爐專(zhuān)業(yè)必備條件：The necessary conditions preparation by boiler specialty

28、4.4.1.1 廠(chǎng)區(qū)燃油系統(tǒng)、爐前燃油系統(tǒng)可正常投入；The fuel oil system of whole plant area and the fuel oil system of boiler can be putting into operation4.4.1.2 上煤系統(tǒng)具備供煤條件；The coal transportation system can supply the coal into bunker and coal feeder and coal mill can be putting into operation normally4.4.1.3 除塵、撈渣機(jī)及除灰、除渣

29、系統(tǒng)具備投入條件；Bag filter, Slag and ash, bottom ash removing system can be putting into operation4.4.1.4 鍋爐化學(xué)清洗工作結(jié)束，臨時(shí)系統(tǒng)恢復(fù)完畢；The boiler chemical cleaning is finished. And temporary blowing systems are recovered4.4.1.5 煙溫探針、汽包水位、爐膛火焰電視調(diào)試完畢，可以投入；Flue gas temperature detector、drum level、Furnace Flame TV comm

30、issioning is finished4.4.1.6 PCV閥操作試驗(yàn)完畢；PCV commissioning is finished4.4.1.7 鍋爐冷態(tài)通風(fēng)試驗(yàn)完畢；Boiler cold state ventilation test is finished4.4.1.8 汽水閥門(mén)、煙風(fēng)擋板檢查確認(rèn)完畢，開(kāi)關(guān)靈活；The confirmation of valves and damper of boiler side are finished4.4.1.9 空預(yù)器吹灰系統(tǒng)具備以輔汽方式吹掃投用的條件，轉(zhuǎn)子監(jiān)視系統(tǒng)好用，消防、沖洗水系統(tǒng)具備投入條件；Soot blowing syste

31、m of air preheater can be putting into operation using the auxiliary steam. Turbine supervision system, deluge system and water flushing system can be putting into operation.4.4.1.10 燃燒器擺動(dòng)試驗(yàn)、油槍及點(diǎn)火槍操作試驗(yàn)合格；Burner swing test, oil gun and ignition gun operation test is qualified.4.4.1.11 微油系統(tǒng)調(diào)試完畢，具備投入條件

32、；The commissioning of micro-oil ignition system if finished4.4.1.12 一次、送、引風(fēng)機(jī)及其油站的聯(lián)鎖保護(hù)試驗(yàn)完畢，試驗(yàn)合格；The interlock tests of primary air, forced draft fan and induce draft fan and related lube oil station are finished4.4.1.13 有13套制粉設(shè)備具備投入運(yùn)行條件；At least 3 sets pulverized coal system can be putting into opera

33、tion4.4.1.14 爐本體及各系統(tǒng)保溫工作完畢，各人孔、看火孔、檢查門(mén)完整；Heat insulation works of boiler and other system is finished. The checks of all manholes, observation door are completed.4.4.1.15 膨脹指示器安裝正確，所有爐本體吹灰器在退出位置；Expansion indicators are installed correctly. All the boiler sootblower are out of the blowing position4.

34、4.1.16 主、再熱汽減溫水系統(tǒng)及鍋爐疏水排放系統(tǒng)調(diào)試完畢，可隨時(shí)投入；The main steam and reheater steam desuperheater water system and boiler drainage system can be putting into operation4.4.1.17 鍋爐MFT聯(lián)鎖保護(hù)試驗(yàn)結(jié)束，試驗(yàn)合格；The interlock test of MFT is finished.4.4.1.18 吹管臨時(shí)系統(tǒng)通過(guò)聯(lián)合檢查合格，整改項(xiàng)目完成，臨控門(mén)操作試驗(yàn)完成；The temporary systems of steam blowing

35、are checked. The Rectification items are finished.4.4.1.19 脫硫系統(tǒng)已隔離且其旁路擋板已開(kāi)；The desulphurization system have been isolation and its bypass damper is opened4.4.2 汽機(jī)專(zhuān)業(yè)必備條件The necessary condition preparation by turbine specialty4.4.2.1 吹管臨時(shí)系統(tǒng)安裝完成，通過(guò)聯(lián)合檢查合格，整改項(xiàng)目完成；The temporary blowing systems are install

36、ed completely and the rectification items are finished after checked.4.4.2.2 吹管系統(tǒng)中涉及隱蔽工程項(xiàng)目檢驗(yàn)、簽證手續(xù)齊全；The inspection and visa formality of concealed works related blowing system are complete4.4.2.3 電動(dòng)給水泵（最好汽動(dòng)給水泵具備投入條件）試轉(zhuǎn)正常，最大流量試驗(yàn)結(jié)束，能滿(mǎn)足鍋爐連續(xù)供水要求；The commissioning and tests of electric motor driven feed

37、water pump are finished and the pump can be putting into operation normally.4.4.2.4 給水系統(tǒng)、凝結(jié)水系統(tǒng)、真空系統(tǒng)及設(shè)備聯(lián)鎖保護(hù)試驗(yàn)完成，具備投入條件；The interlock tests of feedwater system, condensate system, vacuum systeam and its related equipments are finished and can be putting into operation normally.4.4.2.5 汽機(jī)油質(zhì)合格，潤(rùn)滑油、EH油系統(tǒng)

38、、頂軸盤(pán)車(chē)系統(tǒng)能投入運(yùn)行，直流備用泵試驗(yàn)好用；The turbine lube oil quality is qualified with the standards and turbine lube oil system, EH oil system, jacking oil system can be putting into operation normally. The tests of DC lube oil pump of the turbine are finished and can be putting into standby positionl.4.4.2.6 機(jī)側(cè)疏水系

39、統(tǒng)形成并具備投入條件，臨時(shí)疏水管道形成并確保暢通、安全。The drainage system of turbine side id finished and can be putting into operation.4.4.2.7 除氧器加熱具備投入條件；The deaerator heater system can be put into operation4.4.2.8 低壓缸噴水具備投入條件；The spray water system of low pressure cylinder of turbine can be putting into operation 4.4.2.9

40、汽機(jī)缸溫測(cè)點(diǎn)具備投入條件，汽機(jī)轉(zhuǎn)速可以遠(yuǎn)方監(jiān)視；All the turbine temperature supervision points and turbine speed can be supervised on the DCS 4.4.2.10 各抽汽電動(dòng)截止閥關(guān)閉且嚴(yán)密；All the steam extraction electric motor valve can be closed tightness.4.4.2.11 汽機(jī)本體與主、再蒸汽系統(tǒng)相連的暖機(jī)管道要認(rèn)真檢查與吹管系統(tǒng)的隔離措施，防止竄汽進(jìn)入汽缸；In order to prevent the steam inject

41、 into the turbine cylinder. All the pipes connected the turbine cylinder and the main steam pipe and reheater pipe should be isolation 4.4.2.12 準(zhǔn)備好足夠合格的靶板；Preparation enough qualified target plate.4.4.3 熱工專(zhuān)業(yè)必備條件： The necessary conditions preparation by I&C specialty 4.4.3.1 CRT上設(shè)備運(yùn)行監(jiān)視參數(shù)如：壓力、流量和溫度等測(cè)點(diǎn)

42、正常投入，指示正確；All the pressure, flow, temperature measurement points can be supervised on the DCS and all the measurement points are showing correctly 4.4.3.2 FSSS功能調(diào)試完畢，可以投入；The commissioning of FSSS is finished and can be putting into operataion.4.4.3.3 爐膛壓力、燃油壓力、除氧器水位、凝汽器水位自動(dòng)控制等可以投入；The auto control

43、of furnace pressure, fuel oil pressure, deaerator level, condenser level can be putting into operation.4.4.3.4 DCS報(bào)警功能調(diào)試結(jié)束，可以投用；The commissioning of DCS alarms is finished and can be putting into operation.4.4.3.5 汽包水位高低MFT保護(hù)解除，其他MFT保護(hù)已投入；Disability of the drum level protection in the MFT only and o

44、thers protections of MFT are availability4.4.3.6 用于吹管排汽管上的臨時(shí)表計(jì)均經(jīng)校驗(yàn)安裝完畢，能隨時(shí)投入，指示正確；All the temporary measurement meters installed discharge of the blowing pipe is checked and can be putting into operation4.4.3.7 在控制室內(nèi)遠(yuǎn)方操作吹管臨控門(mén)開(kāi)關(guān)，且具備中停功能；The electric motor valve used to control steam blowing can be op

45、eration in the center control room and can be stopped in any position4.4.4 公用系統(tǒng)必具條件The necessary conditions preparation by common user system4.4.4.1 廠(chǎng)用電系統(tǒng)（動(dòng)力電源、事故電源、照明電源）分部試運(yùn)轉(zhuǎn)結(jié)束并已投運(yùn)；The trial operation of house power system is finished and has been putting into operation.4.4.4.2 循環(huán)水、開(kāi)、閉式水、工業(yè)水系統(tǒng)分部試運(yùn)轉(zhuǎn)

46、結(jié)束并已投運(yùn)；The trial operations of circulation cooling water system, opened cycle circulation cooling water system, closed cycle cooling water system, industrial water system are finished and have been putting into operation.4.4.4.3 化學(xué)補(bǔ)給水系統(tǒng)投運(yùn)正常，取樣（爐水、給水、凝結(jié)水）、加藥、凝結(jié)水精處理系統(tǒng)具備投運(yùn)條件；Chemical make up system has

47、 been putting into operation. Sampling, chemical dosing device and its related system, condensate polishing device can be putting into operation.4.4.4.4 壓縮空氣系統(tǒng)分部試運(yùn)轉(zhuǎn)結(jié)束并已投運(yùn)；The trial operation of air compressor system is finished and can be putting into operation4.4.4.5 輔助蒸汽系統(tǒng)分部試運(yùn)轉(zhuǎn)結(jié)束并已投運(yùn)；The trial ope

48、ration of auxiliary steam system is finished and has been putting into operation.4.4.4.6 消防系統(tǒng)分部試運(yùn)轉(zhuǎn)結(jié)束并已投運(yùn)；The trial operation of deluge system is finished and has been putting into operation.4.5 吹管臨時(shí)系統(tǒng)要求Requirements of temporary steam blowing systems4.5.1 吹管臨時(shí)控制門(mén)應(yīng)選擇2臺(tái)，公稱(chēng)壓力不小于16 MPa、承受溫度不小于450、公稱(chēng)直徑與主汽

49、管通徑相配的電動(dòng)閘閥，閥門(mén)全開(kāi)、全關(guān)時(shí)間應(yīng)在60秒以?xún)?nèi)；The temporary control valve used to blowing should normally not less 2 sets and the nominal pressure not less than 16Mpa，and temperature not less than 450 . The nominal diameter of temporary control valve should be matched with the main steam pipe. The fully closed and op

50、ened time should not be higher than 60 seconds.4.5.2 主系統(tǒng)吹管旁路門(mén)應(yīng)選擇2臺(tái)公稱(chēng)壓力不小于10 MPa、承受溫度不小于450、公稱(chēng)直徑不小于57mm的手動(dòng)閥；The nominal pressure of the bypass valve of the temporary control valve should not less than 10Mpa and the temperature should not less than 450, the diameter should not less than 57mm 4.5.3 臨時(shí)控

51、制門(mén)應(yīng)水平安裝，并搭設(shè)操作平臺(tái)，應(yīng)在主控制室內(nèi)進(jìn)行遠(yuǎn)方操作?？刂齐娫窗踩煽?，電纜與管道充分隔離，防止受熱燙損；The temporary control valve used to blowing should be installed horizontal and set up temporary operation platform.4.5.4 汽機(jī)高壓自動(dòng)主汽門(mén)前及中壓自動(dòng)主汽門(mén)前濾網(wǎng)應(yīng)摘掉，利用汽機(jī)廠(chǎng)供吹管閥套進(jìn)行閥門(mén)改裝，與臨時(shí)管道、臨控門(mén)等連接形成吹管系統(tǒng)；The filter ahead of the turbine high pressure stop valve and r

52、eheater stop valve should be removed and using the valve cover supplied by turbine manufacture and temporary pipes and control valves to form the blowing system4.5.5 吹管臨時(shí)系統(tǒng)安裝在裝設(shè)靶板位置前所有臨時(shí)管道的焊接用亞弧焊打底，所有臨時(shí)系統(tǒng)必須經(jīng)過(guò)100%探傷合格；The welding for all the temporary pipes that before the target plate should be sub-

53、arc welding base and all the temporary must pass through 100% inspection.4.5.6 臨時(shí)控制門(mén)前的臨時(shí)連接管，材質(zhì)為合金鋼管，設(shè)計(jì)壓力應(yīng)不小于10MPa,溫度應(yīng)不小于450，管徑與主蒸汽管相同。臨時(shí)排氣管的內(nèi)徑宜大于或等于被吹洗管的內(nèi)徑，在選擇與熱段管徑等徑有困難的時(shí)，可選用總截面積大于熱段管截面積2/3的臨時(shí)排氣管，材質(zhì)可選用碳鋼管20G。臨時(shí)控制門(mén)后管道可采用優(yōu)質(zhì)碳素鋼；The temporary pipes before temporary blowing control valve should be alloy

54、 steel tubes, design pressure shall be not less than 10Mpa, temperature not less than 450. The inner diameter of temporary exhaust pipe should be greater than or equal to the diameter of blowing pipe. If it is hard to choose the pipe diameter, we can choose the temporary exhaust pipe which the total

55、 cross-sectional area should be greater than 2/3 of hot section pipes with carbon steel 20G. And the pipe after the temporary control valve with quality carbon steel.4.5.7 集粒器安裝前須進(jìn)行必要的清掃，設(shè)計(jì)壓力不小于6MPa、溫度450，阻力小于0.1 MPa，強(qiáng)度滿(mǎn)足蒸汽參數(shù)要求，并且集粒器收集性能良好，濾網(wǎng)孔徑不大于12mm，且主汽流不能直吹網(wǎng)孔，并有足夠大的收集雜物的空間。Particle collector shou

56、ld be cleaning before installed and design pressure should not less than 6Mpa ,temperature not less than 450, resistance not less than 0.1Mpa , pore size of filter not greater than 12mm and meet the strength requirement and have good performance.4.5.8 集粒器宜水平安裝，安裝時(shí)應(yīng)注意汽流方向，并設(shè)置操作平臺(tái)，集粒器前后應(yīng)安裝壓力表或差壓表，以監(jiān)視其阻力,并設(shè)立排雜質(zhì)點(diǎn)。集粒器安裝前必須進(jìn)行認(rèn)真、細(xì)致的檢查，確保使用的安全。第一階段吹管結(jié)束后將集粒器拆除。The installation of parti