feedwaterpumpturbineequipmentcontract(编辑修改稿)

feedwaterpumpturbineequipmentcontract(编辑修改稿)内容摘要：

r each unit adopt the same 3 February 2020 XXXX Power Plant 4 1000MW Ultrasupercritical Unit Feed Water Pump Turbine Contract Document Volume 3 Technical Specification direction arrangement. Condenser backpressure Double backpressure under VWO condition: (a) Double backpressure under Summer condition: (a) Steam of BFPT is discharged to: down into main turbine condenser Cooling water: Cooling water quality: demineralized water Cooling water temperature: design temperature: 25 , maximum temperature: 38℃ Cooling water pressure: ~ MPa(g) Quality of steam entering turbine: Index Unit Value 1 Sodium ppb ＜ 5 2 3 4 5 Silicon dioxide conductivity（ 25℃ ） Iron copper ppb 181。 s/cm ppb ppb ＜ 15 ＜ ≤10 ＜ 5 Unit operation condition Unit operation load mode After trial operation for a half year, annual utilization time should not be less than 6,500 hours and annual available time should not be less than 7,800 hours. Forced outage rate 2%, and forced outage rate is calculated by the following equation: Forced outage hours Forced outage rate＝ Unit operation mode: Operation hours＋ forced outage hours 100％ Load (TMCR1) 100％ 75％ 50％ 40％ Hours/year 4200 2120 1180 300 Overhaul interval of feedwater pump turbine is not less than 6 years. Load property The unit mainly carries basic load and has certain cycling load operation capability. It can meet the requirement of prolonged safe and stable operation under the condition that all automatic equipment is put into operation, oil is not put into operation and unit pletely burns coal when boiler load is equal to or greater than 35%BMCR. 4 Technical specification Parameter, capacity/capability BFPT body 4 February 2020 XXXX Power Plant 4 1000MW Ultrasupercritical Unit Feed Water Pump Turbine Contract Document Volume 3 Technical Specification (1) Model: Single Flow, Condensing Type: single cylinder, single flow, shaft driven, pure condensation, dual steam source, automatic switchover Operation mode: variable parameter, variable power, variable speed Design power: MW, speed:_6300 r/min Power at rated condition: , speed: 5855r/min Rated internal efficiency: not less than 81% Maximum continuous power: 22MW Rated admission pressure: MPa(a), temperature: ℃ Rated exhaust pressure: (a)(high backpressure side), temperature: ℃ (high backpressure side) (a)(low backpressure side),temperature: ℃ (low backpressure side) Rated speed : 5855r/min Speed governing range: 2850 ~ 6300 r/min Action speed of emergency trip: Not Applicable r/min (mechanic) 6440rpm (electric) Rotating direction: Counter Clockwise (viewing from turbine to boiler feedwater pump) Method of connection to turbine driven feedwater pump: Flexible Coupling Booster pump will be connected to BFP with reduction gear (scope of BFP). Maximum noise value: 85 dB(A) (1m from BFPT housing) Installation method: Spring foundation (2) Steam parameter • HP steam admission (before HP main stop valve, TMCR condition) Cold reheat section: pressure (a) (variation range: see appendix: heat balance diagram) temperature: ℃ (variation range: see appendix: heat balance diagram) flow: 0t/h(high backpressure side) 0t/h(low backpressure) • LP steam admission (four stage extraction, under main turbine TMCR condition) Pressure : (a) Temperature: ℃ Flow: (high backpressure side) (low backpressure side) LP steam source changeover point: % (main turbine TMCR load) At the time of LP, HP steam changeover, LP steam parameter: pressure: later MPa, temperature: later℃ Commissioning /startup steam supply : auxiliary steam, Pressure , temperature: 300380℃ , flow : t/h. (3) Steam exhaust port Pressure (rated condition of main turbine) (high backpressure), (low backpressure) Maximum steam exhaust pressure: kPa, maximum steam exhaust temperature: 120℃ (high backpressure) Maximum steam exhaust pressure: kPa, maximum steam exhaust temperature: 120℃ (low backpressure) Distance from centerline of turbine rotor to steam exhaust port: mm Number of exhaust ports: one, dimension: Φ2590 mm 5 February 2020 XXXX Power Plant 4 1000MW Ultrasupercritical Unit Feed Water Pump Turbine Contract Document Volume 3 Technical Specification Direction of exhaust port: down direction, connection type: flange type (4) Structure dimension of BFPT Length 4740Width 4660Height 3560mm Height from casing flange joint to upper casing top surface 1500mm Height from cylinder flange joint to lower casing bottom surface 1450mm Height from turbine rotor center distance to operating floor 1500mm (5) Weight Rotor weight: Upper casing weight: 11t Lower casing weight: 10t Total weight: Heaviest part for transportation: 36t Technical parameter Power under rated condition: refers to the power of feedwater pump operating at the guaranteed efficiency point (. water pump under designed condition) under the rated condition of feedwater pump, where the internal efficiency of feedwater pump turbine is the highest. At this time the unit corresponds to TMCR condition. Power under maximum condition: refers to the maximum continuous power of feedwater pump turbine obtained by adding the power under maximum condition of feedwater pump (. nameplate condition of feedwater pump) to 5% power allowance. The following table provides technical parameters under various conditions of feedwater pump turbine. a. High backpressure feedwater pump turbine: Main unit condition Name unit Pressure Maximum condition point Mpa(a) Summer condition 100% TMCR loa。