海上平台上市公司题库

上市公司题库1、MARS100燃气轮机启动系统由哪两大部分组成的？答:The variable speed starter motor is a 0-190 horsepower,0-380V AC,3 phase squirrel-cage induction motor.(B330)Motor speed is 0-7000rmp ,and maximum power level is 75KW for 3.5 minutes.The variable frequency drive controller(VFD930),the controller is capable of opertation on 380-460V AC 3-phase power, at line frequencies of 48-62Hz and maximum input current 250A. The controller is rated at 231 Amps(continuous) output.2、MARS100透平机组的停机方式有哪几种？答:Cooldown Nonlockout .Cooldown lockout. Fast Stop Nonlockout Fast Stop Nonlockout3、寒冷的雾，雪天气，发电工应特别注意哪些检查？答:Check engine inlet air filtration system for clogging or contamination4、并车的条件是什么？答:matching of the generator and load bus voltage ,frequency, and phase5、MARS100透平机组压气机的形式，叶片级数，压比各是多少？答:Type Axial Number of Stages 15 Compression Ratio 17.3:1 Speed(design) 10780rmp Flow 90.6 lb/sec(41 kg/sec)COMBUSTION CHAMBERType Annular Ignition Torch Number of Fuel NozzlesGAS PRODUCER TURBINEType ReactionNumber of Stages 2 Speed 11168rmpPOWER TURBINEType reaction Number of Stages 2 Speed(Designed Optimum at 59F(15℃) 9100rmp maximum speed 9500rmpBEARINGSJournal Tilt-Pad Thrust Gas-producer:Tilt-pad Power Turbine:Tilt-pad 6、MARS100机组防喘措施有哪些？答:BLEED V ALVES AND GUIDE VANES7、MARS100的T1指的是哪个地方的温度？答:Compressor inlet temperature (T1) affects the compressor’s performance; colder air will improve the compressor’ performance and hotter air will degrade the compressor’s performance. 8、MARS100的T5指的是哪个地方的温度？答:Third stage turbine nozzle temperature is called T5, and is measured by seventeen thermocouples installed in bosses in the combustor housing.9、当透平发生滑油高温报警时，如何检查?答:Check lube oil pressure; check oil cooler fans; check for contamination on oil cooler air side, check oil cooler louvers10、当透平发生滑油低液位报警时，如何检查？答:Check oil level in tank ; check operation of oil level switch; check for ruptured lines or severe leaks.11、当透平发生低油压报警时，如何检查：答:Check oil filter and regulator ; check for ruptured lines and low oil level; check pump suction strainer.13：当透平发生油箱高压报警时，如何检查？答:check for high back pressure in tank; check operation oil tank pressure switches/transmitter. 14：当透平发生滑油滤器高压差报警时，如何检查？答:check condition of lube oil; check oil temperature and pressure; check operation of filter Δp switch/transmitter; shift to reserve filter and change filter element.15：当透平发生T5高温报警时，如何检查？答:check voltmeter reading; confirm location of faulty thermocouple; test T5 system at next shutdown; consider combustor borescope inspection at first opportunity.16：当透平发生24VDC高压报警时，如何检查？答:check voltmeter reading on 24 V battery charger, check analog input module calibration; adjust charging rate if necessary; repair/replace charger/batteries if unable to adjust.17：当透平发生24V充电器故障报警时，如何检查？答:check voltmeter & ammeter readings on charger; ensure AC power to charger is ON ; repair/replace charger/batteries if necessary.18：当透平发生T5热电偶故障报警时，如何检查？答:check display screens to determine faulty thermocouple reading; check T5 system calibration at next opportunity (include Fast mV input module).19：当透平发生滑油系统故障报警时，如何检查？答:should find what kind of alarm, high /low temperature , high/low pressure,20：当透平发生GP止推轴承高温报警时，如何检查？答:verify temperature on Meters screen; Reduce engine load; check RTD input module calibration and RTD accuracy21：当透平发生冷却风扇高振动报警时，如何检查？答:inspect cooler fan/s/ for loose/ bent blades; check vibration switch on cooler; check fan belts for tightness and condition; check pillow block and fan motor bearings.22：当透平发生齿轮箱高温报警时，如何检查答: check gearbox oil temperature; ensure adequate oil supply to gearbox; check bearing drains to ensure clear drains and flow; check gearbox alignment.23：当透平发生天然气泄漏报警时，如何检查？答:confirm reading on Meters screen; shut unit down and check for leaks as soon as possible. 24：当透平发生进气滤器高压差报警时，如何检查？答:check Δp reading on gage; check inlet screens and ducting for obstructions/contamination; replace filter elements as soon as practicable.25：当透平发生天然气低压报警时，如何检查？答: check gas fuel pressure gage reading ; check pressure switch calibration; check manual shutoff valve; check supply pressure from scrubber/ conditioning system.26：当透平发生发电机绕组高温报警时，如何检查？答:reduce generator load ; check generator cooling air inlet and exhaust ducts for restrictions; compare with other phase winding temperatures (if significant fifferences are noted, check phase current readings for corresponding differentials).27：当透平发生火灾发生报警时，如何检查？答:ensure package is in shutdown process; shut down related ancillary equipment (fuel gascompressors, waste heat equipment, ect.); ensure that extinguishing agent has been released; ENSURE THAT ALL PERSONNEL ARE CLEAR OF ENCLOSURE AND AREA AROUND UNIT.28：当透平发生快速停机锁定报警时，如何检查？答:backup fast stop relays have been activated; backup reset will be restore unit operation29：当透平发生伺服油油压低报警时，如何检查？答:check servo pump and controls for proper operation; notify maintenance personnel for further investigation.30：当透平发生盘车失败报警时，如何检查？答:monitor ngp display during start; should reach 15% prior to timeout of crank fail timer (nominally 35 seconds); if speed appears normal, notify controls maintenance personnel for calibration and functional tests of speed monitor system。