熱控檢修規(guī)程（2018修訂版）

Q/SCFD

華電聯(lián)合貴州分公司興義項目部企業(yè)標準

Q/SCFD-102.04-2018

350MW機組熱控專業(yè)檢修工藝規(guī)程

2018-XX-XX發(fā)布2018-XX-XX實施

華電聯(lián)合貴州分公司興義項目部發(fā)布

目錄

前言......................................................................................12

1.適用范圍..............................................................................14

2.規(guī)范性引用文件........................................................................14

3.術語、定義和縮略語.....................................................................14

3.1.分散控制系統(tǒng)（DCS）..............................................................14

3.2.數據采集系統(tǒng)（DAS）..............................................................14

3.3.模擬量控制系統(tǒng)（MCS）............................................................14

3.4.協(xié)調控制系統(tǒng)（CCS）..............................................................14

3.5.自動發(fā)電控制（AGC）..............................................................15

3.6.順序控制系統(tǒng)（SCS）..............................................................15

3.7.爐膛安全監(jiān)控系統(tǒng)（FSSS）..........................................................15

3.8.總燃料跳閘（MFT）................................................................15

3.9.汽輪機數字電液控制系統(tǒng)（DEH）.....................................................15

3.10.汽輪機自啟停系統(tǒng)（ATC）..........................................................15

3.11.超速保護控制（OPC）.............................................................15

3.12.汽輪機監(jiān)視儀表（TSI）...........................................................15

3.13.現場總線控制系統(tǒng)（FCS）..........................................................16

3.14.給水泵汽輪機電液控制系統(tǒng)（MEH）..................................................16

3.15.汽機振動監(jiān)測和故障診斷系統(tǒng)（TDM）..................................................16

4.分散控制系統(tǒng)（DCS）.....................................................................16

4.1.概述..............................................................................16

4.2.DCS系統(tǒng)結構和配置................................................................16

4.2.1.DCS網絡配置................................................................16

4.2.2.單元機組網絡配置...........................................................16

4.2.3.網絡參數...................................................................17

4.2.4.DCS通訊接口................................................................17

4.2.5.GPS時鐘同步系統(tǒng)............................................................17

4.3.單元機組及公用DCS控制器配置......................................................17

4.4.分散控制系統(tǒng)基本檢修項目及質量要求..............................................18

4.4.1.停運前檢查................................................................18

4.4.2.停運后檢修.................................................................18

4.4.3.網絡及接口設備檢修........................................................20

4.4.4.電源設備檢修..............................................................21

4.4.5.主時鐘和全球定位系統(tǒng)（GPS）標準時鐘裝置檢修...............................21

4.4.6.軟件檢查..................................................................22

4.4.7.試驗項目與技術標準........................................................22

4.4.8.運行維護..................................................................29

4.4.9.計算機控制系統(tǒng)維護........................................................31

4.4.10.計算機控制系統(tǒng)停用.......................................................33

4.5安全措施..........................................................................33

4.5.1風險分析....................................................................33

4.5.2工作票安全措施............................................................34

5.FSSS系統(tǒng)..............................................................................34

5.1.概述..............................................................................34

5.2.FSSS主要功能.....................................................................35

5.3.FSSS系統(tǒng)構成及主要設備...........................................................35

5.4.就地設備..........................................................................35

5.4.1.點火控制柜。................................................................35

5.4.2.油槍。......................................................................35

543.點火裝置（高能點火器、點火桿、點火電纜等）。....................................35

5.4.4.油角閥、霧化閥、吹掃閥。....................................................36

5.4.5.火焰檢測器。................................................................36

5.4.6燃油速斷閥、回油速斷閥。....................................................36

5.4.7爐膛壓力開關。..............................................................36

5.4.8一次風門。...................................................................36

5.5主要邏輯程序.....................................................................36

5.5.1MFT邏輯。..................................................................36

5.5.2爐膛吹掃邏輯。...............................................................36

5.5.3OFT邏輯。..................................................................36

5.5.4自動投油邏輯。...............................................................36

5.5.6點火邏輯。...................................................................36

5.6主要保護.........................................................................36

5.6.1爐膛壓力低低MFT。..........................................................36

562爐膛壓力高高MFT。...........................................................36

5.6.3送風機全停MFT。............................................................36

5.6.4引風機全停MFT。............................................................36

5.6.5火檢冷卻風母管壓力低保護MFT。..............................................36

5.6.6脫硫要求鍋爐MFTo....................................................................................................................36

5.6.7手動MFT。..................................................................36

5.6.8鍋爐總風量低MFT。..........................................................36

5.6.9空預器全停MFT。............................................................36

5.6.10給水流量低MFT。...........................................................36

5.6.11失去全部火焰。..............................................................36

5.6.12給水泵全停MFT。...........................................................36

5.6.13燃料喪失。..................................................................36

5.6.14一次風機全停MFT。.........................................................36

5.6.15再熱器保護。................................................................36

5.6.16濕態(tài)下，鍋爐貯水箱液位高。..................................................36

5.6.17分離器出口溫度高高。........................................................37

5.6.18末級過熱器蒸汽溫度高高。....................................................37

5.6.19末級再熱器蒸汽溫度高高。....................................................37

5.7吹掃允許條件.....................................................................37

5.7.1MFT已動作。.................................................................37

5.7.2任一空預器運行。.............................................................37

III

5.7.3無MFT跳閘條件。..........................................................37

5.7.4進油速關閥己關。...........................................................37

5.7.5回油速關閥已關。...........................................................37

5.7.6有送風機運行。.............................................................37

5.7.7有引風機運行。.............................................................37

5.7.8所有一次風機全停。.........................................................37

5.7.9給煤機全停。...............................................................37

5.7.10所有油角閥關閉。..........................................................37

5.7.11煤、油火檢均無火。........................................................37

5.7.12油泄漏試驗完成。..........................................................37

5.7.13磨煤機全停且出口門全關。..................................................37

5.7.14無火檢冷卻風母管壓力低報警。..............................................37

5.8煤層點火允許條件..................................................................37

5.8.1無MFT。....................................................................37

5.8.2任--次風機運行。............................................................37

5.8.3任一密封風機運行。...........................................................37

5.8.4總風量滿足油燃燒器點火條件或任一燃燒器運行。................................37

5.8.5二次風溫不低。...............................................................37

5.8.9火檢冷卻風母管壓力不低。.....................................................37

5.9油層點火允許條件..................................................................37

5.9.1進油母管壓力合適。...........................................................37

5.9.2無MFT。....................................................................37

5.9.3無OFT。....................................................................38

5.9.4進油速關閥已開。............................................................38

5.9.5回油速關閥已開。.............................................................38

5.9.6進油溫度不低。...............................................................38

5.9.7總風量大于30%。.............................................................38

5.9.8火檢冷卻風母管壓力不低。....................................................38

5.10設備檢修.........................................................................38

5.10.1油槍檢修....................................................................38

5.10.2高能點火裝置的檢修.........................................................39

5.10.3油角閥檢修..................................................................39

5.10.4燃回油速斷閥檢修...........................................................40

5.10.5火焰檢測器檢修..............................................................40

5.10.6火焰視頻監(jiān)測................................................................41

5.10.7爐膛測溫....................................................................42

5.10.8FSSS硬保護柜及其他設備的檢修..............................................42

5.10.9FSSS常見故障及處理方法....................................................43

5.10.10系統(tǒng)調試.................................................................44

5.11安全措施........................................................................48

6.模擬量控制系統(tǒng)（MCS）...................................................................48

6.1概述.............................................................................49

1.1.2系統(tǒng)軟件結構：...............................................................49

6.2設備檢修..........................................................................49

6.2.1變送器校驗（詳見變送器檢修規(guī)程）...............................................49

6.2.2氣動執(zhí)行機構檢修（詳見氣動執(zhí)行機構檢修規(guī)程）...................................49

6.2.3電動執(zhí)行機構檢修（詳見電動執(zhí)行機構檢修規(guī)程）...................................49

6.2.4測溫元件檢修（詳見測溫元件檢修規(guī)程）........................................49

6.2.5故障處理.....................................................................49

6.3系統(tǒng)調試..........................................................................51

6.3.1送風機控制系統(tǒng)...............................................................51

6.3.2引風機控制系統(tǒng)...............................................................51

6.3.3除氧器水位控制系統(tǒng)...........................................................52

6.3.4過、再熱汽溫控制系統(tǒng)........................................................53

6.3.5單回路控制系統(tǒng)...............................................................54

6.3.6協(xié)調控制系統(tǒng).................................................................54

6.3.7其它設備檢查調校。...........................................................55

6.4安全措施..........................................................................55

6.4.1風險分析.....................................................................55

6.4.2工作票安全措施...............................................................56

7.DEH系統(tǒng).................................................................................56

7.1設備系統(tǒng)概述......................................................................56

7.1.1設備簡介.....................................................................56

7.1.2系統(tǒng)功能.....................................................................56

7.2基本檢修項目與質量要求............................................................56

7.2.1系統(tǒng)停運前的檢查............................................................56

7.2.2系統(tǒng)停運后檢修............................................................56

7.2.3校準項目與技術標準..........................................................57

7.2.4系統(tǒng)投運前的試驗項目及質量要求..............................................58

7.2.5.系統(tǒng)各功能投運過程及質量要求.............................................59

7.2.6負荷控制功能投運............................................................60

7.2.7.閥門管理和在線試驗.......................................................61

7.2.8機組跳閘保護試驗...........................................................61

7.2.9汽閥嚴密性試驗..............................................................62

7.2.10系統(tǒng)的動態(tài)特性試驗與質量指標...........................................63

7.3ETS系統(tǒng)調試......................................................................64

7.3.1ETS檢查及受電：.............................................................64

7.3.2靜態(tài)調試：...................................................................64

7.3.3動態(tài)調試：...................................................................64

7.3.4ETS動態(tài)試驗：...............................................................65

7.3.5保護動作聯(lián)動設備：..........................................................65

7.3.6系統(tǒng)聯(lián)調：...................................................................65

7.3.7動態(tài)投入：...................................................................65

7.3.8ETS常見故障及處理方法：.....................................................65

7.4運行維護..........................................................................66

7.4.1投運與驗收要求............................................................66

V

7.5維護.............................................................................66

7.5.1日常維護....................................................................66

7.5.2,定期維護....................................................................67

7.6安全措施：........................................................................67

7.6.1風險分析：.................................................................67

8.檢測儀表及裝置檢修工藝規(guī)程...........................................................67

8.1.溫度元件檢修工藝規(guī)程............................................................67

8.1.1.概述......................................................................67

8.1.2.技術規(guī)范..................................................................67

8.1.3檢修.......................................................................69

8.1.4檢定：.....................................................................70

8.1.5安全措施..................................................................74

8.2彈簧管儀表檢修工藝規(guī)程...........................................................乃

8.2.1概述：.....................................................................75

8.2.2技術規(guī)范：..................................................................75

8.2.3檢修.......................................................................76

8.2.4壓力表的檢定...............................................................78

8.2.5安全措施...................................................................80

8.3.壓力、差壓變送器檢修工藝規(guī)程....................................................80

8.3.1概述：......................................................................81

8.3.2技術規(guī)范：..................................................................81

8.3.3檢修.......................................................................82

8.3.4變送器的檢定...............................................................85

8.3.5安全措施...................................................................85

8.4壓力開關檢修規(guī)程..................................................................86

8.4.1概述.......................................................................86

8.4.2技術規(guī)范：.................................................................86

8.4.3壓力開關的檢修：...........................................................87

8.4.4壓力開關的檢定：...........................................................88

8.4.5安全措施...................................................................90

8.5溫度開關檢修工藝規(guī)程..............................................................90

8.5.1概述......................................................................90

8.5.2溫度開關的檢修.............................................................91

8.5.3溫度開關的調整............................................................91

8.5.4安全措施..................................................................91

8.6液位開關檢修工藝規(guī)程.............................................................92

8.6.1概述.......................................................................92

8.6.2技術規(guī)范：.................................................................93

8.6.3檢修：.....................................................................93

8.6.4設備調校：.................................................................94

8.6.5安全措施...................................................................95

8.7氧量測量裝置檢修工藝規(guī)程...........................................................95

8.7.1概述.......................................................................95

8.7.2.技術規(guī)范..................................................................95

8.7.3.氧化錯的校驗..............................................................96

8.7.4.測量裝置的故障處理........................................................96

8.7.5.安全措施..................................................................98

9.電動執(zhí)行機構........................................................................98

9.1概述：............................................................................98

9.1.1閥門電動裝置功能與種類。...................................................98

9.1.2閥門電動裝置的組成.........................................................99

9.1.3閥門電動裝置的工作原理.....................................................99

9.2技術規(guī)范：.......................................................................100

9.3檢修：...........................................................................102

9.3.1設備檢修..................................................................102

9.3.2設備常見故障的原因分析及處理：............................................103

9.4設備調試：.......................................................................105

9.5不同系列電動閥門的控制原理圖：..................................................107

9.5.2典型DZ系列電動閥門控制原理圖...............................................107

9.6安全措施.........................................................................108

9.6.1風險分析....................................................................108

9.6.2工作票安全措施..............................................................109

9.7氣動執(zhí)行器檢修...................................................................109

9.7.1技術規(guī)范：................................................................109

971.1.氣動行程執(zhí)行機構：.........................................................109

9.7.2檢修......................................................................110

9.7.3設備調校：................................................................111

9.7.3安全措施..................................................................111

9.8PCV閥檢修工藝規(guī)程................................................................112

9.8.1概述：....................................................................112

9.8.2技術規(guī)范：................................................................112

9.8.3設備的檢修：..............................................................112

9.8.4常見故障的原因分析及處理..................................................112

9.8.5設備調試..................................................................113

9.8.6安全措施..................................................................113

9.9EMG系列電動執(zhí)行器檢修工藝規(guī)程....................................................114

9.9.1技術參數..................................................................114

9.9.2力矩開關及調整.............................................................115

9.9.3限位開關及調整...........................................................116

9.9.4MaticC全智能系列調試.......................................................117

9.10儀表導管檢修工藝規(guī)程.............................................................120

9.10.1概述：...................................................................120

9.10.2技術規(guī)范：................................................................120

9.10.3儀表管檢修要求...........................................................120

9.10.4儀表管檢修................................................................122

9.10.5安全措施.................................................................123

VII

9.11SIEMENS電氣定位器檢修工藝規(guī)程...................................................123

9.11.1概述......................................................................123

9.11.2技術規(guī)范：................................................................124

9.11.3檢修......................................................................124

9.11.4設備調校：................................................................124

9.11.5安全措施..................................................................127

9.12ABB電氣定位器檢修工藝規(guī)程......................................................127

9.12.1概述......................................................................127

9.12.2技術規(guī)范：................................................................127

9.12.3檢修......................................................................128

9.12.4設備調校：................................................................128

9.12.5安全措施..................................................................135

9.13ROTORK電動執(zhí)行器檢修工藝規(guī)程...................................................136

9.13.1概述......................................................................136

9.13.2保護功能：................................................................136

9.13.3檢修......................................................................137

9.13.4設備調試：................................................................138

9.13.5安全措施..................................................................141

10.ERPO公司MMS6000系列汽輪機監(jiān)控系統(tǒng)（TSI）.......................................142

10.1主設備概述.......................................................................142

a.軸向位移監(jiān)控功能：...................................................