水汽系統(tǒng)概況翻譯-中英對照
一．水汽取樣系統(tǒng)的組成：
為保證機組安全運行，本工程為每臺機組分別設(shè)置了一套水汽集中取樣分析裝置以監(jiān)測熱力系統(tǒng)水汽品質(zhì)。
水汽集中取樣分析裝置由高溫高壓架、儀表盤和恒溫裝置組成，采用兩屏式，其中高溫高壓架為一個屏架，儀表盤和恒溫裝置組合在一個屏架上。
二．水汽系統(tǒng)各取樣點及儀表分布：
凝結(jié)水泵出口：      電導(dǎo)率表、溶氧表、鈉表、人工取樣
除氧器出口：        溶氧表、人工取樣
省煤器入口：        pH表、電導(dǎo)率表、硅表、人工取樣
爐水(左側(cè)、右側(cè))：  pH表、比電導(dǎo)率儀、人工取樣
飽和蒸汽(左側(cè)、中、右側(cè))： 電導(dǎo)率表、硅表、人工取樣
過熱蒸汽(左側(cè)、右側(cè))： 電導(dǎo)率表、硅表、人工取樣
再熱蒸汽入口(左側(cè)、右側(cè))： 人工取樣
閉式循環(huán)冷卻水：  人工取樣
高壓加熱器疏水：  人工取樣
低壓加熱器疏水：  人工取樣
凝結(jié)水精處理出口：  pH表、電導(dǎo)率表、人工取樣
三．各取樣點的參數(shù)：

序號 取樣點 溫度(℃) 壓力(MPa)
1 凝結(jié)水泵出口 45 3.5
2 除氧器出口 181 0.925
3 省煤器入口 257 20.4
4 爐水（左側(cè)、右側(cè)） 365 20
5 飽和蒸汽(左側(cè)、中、右側(cè)) 365 20
6 過熱蒸汽 548 18.4
7 再熱蒸汽入口（左側(cè)、右側(cè)） 336 4.32
8 閉式循環(huán)冷卻水 20 0.35
9 高壓加熱器疏水 218 3.35
10 低壓加熱器疏水 192 1.08
一．水汽質(zhì)量標(biāo)準(zhǔn)：
●  爐水水質(zhì)控制項目和標(biāo)準(zhǔn)：（PO43盡量控制在1.0―1.5ppm）
PH：9～10   PO43 ：0.5～3.0ppm   SiO2≤250  PPb  DD≤20us/cm
●  給水水質(zhì)標(biāo)準(zhǔn)：
硬度:0umol/l   溶解氧≤7ppb  PH :9.0～9.3   DD≤0.3us/cm
N2H4 ： 10～30ppb   Fe3+ ≤20ppb  Cu2+≤5ppb
●  蒸汽控制項目、標(biāo)準(zhǔn)：
SiO2≤20ppb     Na+≤10ppb    DD≤0.2us/cm
●  凝結(jié)水控制標(biāo)準(zhǔn)：
硬度<1umol/l    氫電導(dǎo)率≤0.3us/cm    溶解氧≤30ug/l
●  經(jīng)精處理混床處理后水質(zhì)標(biāo)準(zhǔn)：
硬度0 umol/l   電導(dǎo)率≤0.2us/cm  二氧化硅≤15ug/l   鈉  5ug/l
鐵≤8ug/l  銅≤3ug/l
第二節(jié) 水汽系統(tǒng)的加藥系統(tǒng)
一．加藥系統(tǒng)概況：
1．系統(tǒng)的功能：
化學(xué)加藥系統(tǒng)包括給水及凝結(jié)水加氨系統(tǒng)，給水加聯(lián)氨系統(tǒng)，爐水加磷酸鹽系統(tǒng)，以控制水汽系統(tǒng)化學(xué)工況，防止系統(tǒng)結(jié)垢和腐蝕。氨加入凝結(jié)水處理的出口及除氧器下降管中維持給水PH值在合適的范圍內(nèi)以防止系統(tǒng)腐蝕；聯(lián)氨加入除氧器下降管中以去除殘余氧；磷酸鹽直接加入鍋爐汽包，提高爐水PH值和防止殘余硬度在鍋內(nèi)沉積，以防止結(jié)垢和腐蝕。
2．系統(tǒng)的組成和作用：
●  給水、凝結(jié)水加氨系統(tǒng)：
氨鋼瓶中液氨經(jīng)蒸發(fā)定量注入到氨攪拌溶液箱，稀釋到1－5%濃度后，再由氨加藥泵送至凝結(jié)水處理的出口和除氧器出口下降管，氨的加入量以控制給水PH值在9.09.5范圍內(nèi)。
●  給水加聯(lián)氨系統(tǒng)：
桶裝聯(lián)氨定量注入到聯(lián)氨攪拌溶液箱中，稀釋到0.1-0.3％濃度后，再用聯(lián)氨加藥泵加至除氧器下降管中，加入聯(lián)氨以控制給水殘余氧在一定范圍內(nèi)。
●  爐水加磷酸鹽系統(tǒng)
固體粉末狀磷酸鹽在溶液箱內(nèi)加水配制成5－8％濃度的磷酸鹽，再由磷酸鹽加藥泵送至鍋爐汽包，磷酸鹽的加藥量以控制爐水磷酸根含量0.5－3mg/l范圍內(nèi)。
3．系統(tǒng)的設(shè)備組成：
●  給水及凝結(jié)水加氨系統(tǒng)
兩臺機組共用一套加氨裝置。加氨為兩點加氨，即除氧器下降管和凝結(jié)水精處理出口。每套加氨裝置由2臺攪拌溶液箱、5臺加藥泵(4臺運行，1臺備用)以及系統(tǒng)管路、閥門、管件、表計等組成，每套加氨裝置內(nèi)所有設(shè)備、管道等全部固定在一個碳鋼底盤上，并配備平臺扶梯。系統(tǒng)內(nèi)凡與溶液接觸部分均應(yīng)無銅件。
●  給水加聯(lián)氨系統(tǒng)
兩臺機組共用一套加藥裝置。聯(lián)氨的加入點為：除氧器下降管。每套加藥裝置由2臺攪拌溶液箱、3臺加藥泵(2臺運行，1臺公共備用)以及輔助設(shè)備、管路、閥門、管件、表計等組成，每套加藥裝置內(nèi)所有設(shè)備、管道等全部固定在一個碳鋼底盤上，并配備平臺扶梯。

II. Operation flow of desalinization system:
     Filtration sea water -> Tubular mixer -> Multi- medium filter -> Activated charcoal filter -> Sea water hyperfiltration system -> First class fresh

water tank -> Second class hyperfiltration system -> Second class fresh water tank -> Mixes ion-exchange reactor -> Desalinization water tank ->

Desalinization water pump -> thermodynamic system of main building.
Section two Operation mode of system
This desalinization system equipment: Filtering processing includes more than 8 medium filter and 5 activated charcoal filters. Under the normal condition,

there are more than 8 medium filters and 5 activated charcoal filters may be operated at the same time; while a failure occurred in 1 unit or in a process

of back flushing, the output power the other equipment shall comply with the requirements of normal operation of the system. Under the normal condition, 2

sets of sea water hyperfiltration system and 2 sets of two sets of second hyperfiltration system may be operated at the same time; the output power of sea

water hyperfiltration system is about 128m3/h; the output power of second hyperfiltration system shall be 85 m3/h. Under the normal condition, two mixing

bed shall be arranged and one mixing shall be treated as backup unit in case of failure.
Section three Preparation before the operation of system
I. Inspection before the startup of system:
1. Inspection before the startup of desalinization system:
●Check whether the desalinization equipment system is switched on and whether the voltage is complied with the requirements.
●Check whether the water pump is complete and in a readiness condition; the water pump inlet gate shall be opened.
●Check whether the current meter and pressure gauge are complete; instruments cock shall be opened;
●Check whether the water levels of water tanks are above 2/3; the outlet passage shall be opened; the water quality shall be clean and comply with the

relevant requirements;
●Check whether the air supplies in air compressor are sufficient; the pressure of gas tank shall be 0.4MPa above.
●Drugs, measuring appliances and instruments of chemical examination shall be prepared and in a good condition;
●The opening and closing of the valves of desalinization system shall be flexible and reliable;
2. Inspection of dosing system:
1. Inspection of sodium hypochlorite dosing system:
●Inspection of the flow level of sodium hypochlorite storing tank;
●Inspect whether the sodium hypochlorite dosing pump is in a normal operation.
●Inspect whether the inlet and outlet channel of sodium hypochlorite dosing pump is opened;
2. Inspection of the flocculating agent system:
●Inspect whether the motor and dosing pump is in a normal operation.
●The watering feeding vent and discharging vent of solution tank shall be tightness; the inlet and outlet vent of dosing pump shall be open before

operation.
●Dissolve the dosing materials:
A. Open the watering supply vent of solution tank, add water to 4/5 and slowly pour proper amount coagulant into the unit.
Start the mixer for stirring.
B. Open the watering supply vent and add the water to a required height.
C. Stop stirring after 20 minutes; open the outlet vent to discharge the solution to the gauge tank.

武漢翻譯公司
2013.7.25