CN207111182U - Dry coke quenching generating heat reclamation device - Google Patents

Abstract

Provided by the utility model is dry coke quenching generating heat reclamation device.Exhaust opening is provided with coking furnace upper end, flue recovery tubes are connected with exhaust opening, coke outlet is provided with the side of coke oven, coke outlet communicates with quenching stove, inert gas blower is housed in the side on quenching stove top, heat-exchange tube is provided with quenching stove inner disc, put-focus valve is provided with quenching stove bottom, exchanged in hot glue and be connected with vapours collector on pipe, vapours collector is connected by pipeline with Balance Air pressure chamber, regulating valve is housed on pipeline, Balance Air pressure chamber side is connected with steam turbine, condensate return pipe is provided with Balance Air pressure chamber bottom, Low Temperature Steam return duct is connected with the side of steam turbine, flue recovery tubes, condensate return pipe and Low Temperature Steam return duct pool together, as heat energy efferent duct, jet carbonated drink converter is housed on heat energy efferent duct, one section of jet carbonated drink converter is provided with hot water outlet.Suitably used as the device that heat is generated electricity and reclaimed using dry coke quenching cooling heat.

Description

Dry coke quenching generating heat reclamation device

Technical field

Provided by the utility model is that thermal technology field is used for the dry coke quenching generating recuperation of heat that cogeneration utilizes with recuperation of heat Device.

Background technology

The utility model proposes former, the device of useful dry coke quenching cogeneration is used, but generating waste-heat can not Make full use of, still cause the waste of the energy.

The dry coke quenching, refer to use inert gas by a kind of quenching of red burnt cooling down.In dry coke quenching process In, red burnt loading, cryogenic inert gas at the top of coke dry quenching furnace are blasted in the red focus layer of coke dry quenching furnace cooling section by circulating fan, are absorbed red Burnt heat, the coke after cooling are discharged from coke dry quenching furnace bottom, and the high temperature inert gas come out from coke dry quenching furnace ring-shaped flue flows through dry Quenching boiler carries out heat exchange, and boiler produces steam, steam-electric power caused by the coke dry quenching boiler of power station.

The characteristics of dry coke quenching heat supply：Because coke oven production is by stove coke pushing, so coke oven heat supply has pulsating nature.But The flow rate of coke regulation and the continuous coke discharging of rotary seal valve for the buffering of section, vibra feeder of being prestored by coke dry quenching furnace, make dry put out Burnt heat supply tends towards stability, and meets the heating demand of steam turbine generator.Because dry-quenching automatic degree is higher, device it is chain More with protecting, a problem of very little this may result in dry coke quenching auxiliary stopping production sometimes.Therefore, there is shakiness for dry coke quenching steam Determine factor.In order to eliminate these destabilizing factors, level and regular maintenance safeguard level except ensureing dry coke quenching auxiliary construction Outside, the methods of a set of TRT of more set dry-quenchings can also be used or outside hot standby steam source is provided.

The content of the invention

In order to realize steam-electric power caused by dry coke quenching cooling procedure, the utility model provides dry coke quenching generating recuperation of heat Device.The device by dry coke quenching cool down caused by steam converge in equilibrium air pressure room, be passed through steam turbine and realize steam-electric power With that will reclaim, solves the technical problem of dry coke quenching heat energy utilization.

The utility model solves technical problem and says that the scheme used is：

Exhaust opening is provided with coking furnace upper end, flue recovery tubes is connected with exhaust opening, is provided with the side of coke oven Coke outlet, coke outlet communicate with quenching stove, and inert gas blower is housed in the side on quenching stove top, is provided with quenching stove inner disc Heat-exchange tube, inert gas blower communicate with heat-exchange tube, are provided with put-focus valve in quenching stove bottom, are connected with heat-exchange tube Vapours collector, vapours collector are connected by pipeline with Balance Air pressure chamber, and regulating valve, equilibrium air pressure are housed on pipeline Room side is connected with steam turbine, is provided with condensate return pipe in Balance Air pressure chamber bottom, low temperature is connected with the side of steam turbine Opposing steam flow pipe, flue recovery tubes, condensate return pipe and Low Temperature Steam return duct pool together, as heat energy efferent duct, Jet carbonated drink converter is housed on heat energy efferent duct, jet carbonated drink converter one end is provided with hot water outlet.

Good effect, using the utility model device can be cooled down using dry coke quenching caused by waste heat be generated electricity and heat The advantages of reclaiming, therefore there is energy-conservation and environmental protection and make full use of the disposable energy.Suitably as hot using dry coke quenching cooling Amount generates electricity and the device of recovery heat uses.

Brief description of the drawings

Fig. 1 is the utility model structure configuration diagram.

In figure, 1. coke ovens, 2. exhaust openings, 2.1. flue recovery tubes, 3. coke outlets, 4. quenching stoves, 5. inert gases Blower fan, 6. heat-exchange tubes, 7. put-focus valves, 8. vapours collectors, 9. regulating valves, 10. Balance Air pressure chambers, 11. condensate returns Pipe, 12. steam turbines, 13. Low Temperature Steam return ducts, 14. jet carbonated drink converters, 15. hot water outlets. Embodiment

According to the figure, exhaust opening 2 is provided with the upper end of coke oven 1, is connected with flue recovery tubes 2.1 in exhaust opening, is refining The side of coke oven is provided with coke outlet 3, and coke outlet communicates with quenching stove 4, and inert gas blower is housed in the side on quenching stove top 5, heat-exchange tube 6 is provided with quenching stove inner disc, inert gas blower is communicated with heat-exchange tube, and put-focus valve is provided with quenching stove bottom 7, vapours collector 8 is connected with heat-exchange tube, vapours collector is connected by pipeline with Balance Air pressure chamber 10, in pipe Regulating valve 9 is housed, Balance Air pressure chamber side is connected with steam turbine 12, and condensate return pipe is provided with Balance Air pressure chamber bottom on road 11, Low Temperature Steam return duct 13 is connected with the side of steam turbine, flue recovery tubes, condensate return pipe and Low Temperature Steam return Flow tube pools together, and as heat energy efferent duct, jet carbonated drink converter 14, jet carbonated drink converter are housed on heat energy efferent duct One end is provided with hot water outlet 15.

The course of work of the present utility model：

Coking coal is added in coke oven, lights coking, flue gas caused by coking is discharged by exhaust opening, is being arranged While cigarette, heat exchange is carried out, the vapours or hot water of collection are reclaimed by flue recovery tubes and connected with heat energy efferent duct, Red Jiao that coke oven is produced is drained into quenching stove from coke outlet, and in the presence of inert gas blower, inert gas is filled Enter in quenching stove, red Jiao is cooled down, while the heat-exchange tube being arranged in quenching stove exchanges circulating water heating, produces heat and steams Vapour, cooled quenching are discharged from put-focus valve, and vapours caused by heat-exchange tube is input in vapours collector, is then passed through Regulating valve pipeline is input in equilibrium air pressure room, carries out steam constant pressure, the steam of constant pressure is by pipeline and steam turbine UNICOM, in height In the presence of warm high steam, driving steam turbine rotation, electrical power generators are driven, exhaust steam caused by the steam turbine course of work leads to Cross low temperature opposing steam flow pipe to be connected with heat energy efferent duct, while Balance Air pressure chamber partial condensation water also converges in heat energy efferent duct It is interior, by jet carbonated drink converter after collecting with the vapours or hot water for coming from flue recovery tubes, steam or hot water are penetrated Circulation is changed to hot water, and gained hot water is recycled for steam-electric power, or used surplus hot water as other thermals source.Steam condensible vapor System process：

High-pressure steam pressure caused by quenching steam generator system is 5.2MPa, temperature is 450 DEG C, and electricity is reached through main steam line Stand, can there is two passages after main steam electrically operated gate, one is to enter steam turbine generator by high pitch, another be through Cross temperature-decreased pressure reducer import electrically operated gate and enter temperature-decreased pressure reducer.

Main inlet throttle-stop valve is located on the main steam line before pitch.The main steam come from boiler it may first have to by main inlet throttle-stop valve, Steam turbine could be entered.For steam turbine, main inlet throttle-stop valve is the master valve of main steam.Main inlet throttle-stop valve is opened, and steam turbine just has Vapour source, there is driving force；Main inlet throttle-stop valve is closed, and steam turbine shuts off vapour source, loses driving force.The main function of main inlet throttle-stop valve is The second pipe protection system is provided for steam turbine, stand-by protection, is prevented a large amount of in the case where pitch or normal control device fail Main steam enters steam turbine.In orderly closedown or manual emergency stop valve trip, main inlet throttle-stop valve can also close.

During steam turbine normal operation, main inlet throttle-stop valve standard-sized sheet；During halt turbines, main inlet throttle-stop valve is closed.The major function of main inlet throttle-stop valve It is that, when steam turbine needs emergency shutdown, by the control of emergency stop valve trip system, executing agency enables main inlet throttle-stop valve quick closedown, and more The fast safety that more can guarantee that unit.

It is normally the temperature-decreased pressure reducer that do not come into operation in production process, all steam are mainly used in generating electricity.When steamer is sent out When motor is faulty, in order to come into operation temperature-decreased pressure reducer just not wasting main steam.Or the low-pressure steam in low-pressure steam pipe network is not Come into operation temperature-decreased pressure reducer when enough.

Main steam electrification technique：

The main steam of HTHP enters the high pressure engineer room of steam turbine by high pitch after main steam electrically operated gate, Here pushing turbine blade does work, and the vapor (steam) temperature and pressure after acting reduce, and enter low pressure engineer room by low-key door, low Effect in pinch roller room largely by water-jet pump is condensed into condensate into condenser, into hot well.In the feelings of pumping that come into operation Under condition, the low-pressure steam in low pressure engineer room, which can be directly entered in low-pressure steam pipe network, to be used.Condensate in condenser passes through Condensate pump enters sweet-water tank and continues boiler of feeding use.

The effect of high pitch is to control the throttle flow in steam turbine, so as to the generated output of regulator generator.

The effect of low-key door is to control the capacity of turbine high-pressure engineer room.

The effect of water-jet pump is that the pressure in hot well is pumped into negative pressure by penetrating the circulation of Water in Water Tanks.Build vacuum ring Border.Water-jet pump one shares two, the using and the reserved.

The effect of solidifying pump is to take the condensate in hot well away, is extracted into sweet-water tank.If hot well liquid level increases, coagulate Low-pressure steam in vapour device can not be converted to liquid well, cause malleation.Destroy vacuum.Solidifying pump one shares three, wherein one Individual operation, one hot standby, a cold standby.I.e. in normal productive process, an only pump operation.In the solidifying pump of two stoppings, one Platform pump is stand-by state.When the pump of operation stops, the stand-by pump automatic start.Last pump is not stand-by state, can be with Power-off.Convenient maintenance.

Water in hot well can not evacuate, it is necessary to assure have water.It is necessary for because low pressure engineer room exports with pressure in condenser Negative pressure.If evacuated, hot well, the outlet of condenser low pressure engineer room are malleation, destroy vacuum environment.So there are two herein Condensate tank Liquid level adjusting valve, control the liquid in hot well by adjusting the amount for returning to hot well and sending back in sweet-water tank respectively Position.The effect of the two valves be it is opposite, one when open another be to close.

Temperature reducing and pressure reducing system：

Reducing-and-cooling plant is a kind of steam thermal energy parameter, pressure, temperature, transition device and the energy-conservation dress using waste heat Put, by the present apparatus, the steam parameter that user provides, which is dropped to user, needs suitable temperature and pressure, to meet wanting for user Ask, and can abundant saving heat energy, reasonable employment heat energy.

The composition of temperature-decreased pressure reducer：

Reducing-and-cooling plant is made up of temperature reducing system, depressurized system, main steam body, thermal control system etc..

Temperature reducing system：By high-differential-pressure regulating valve, cooling water is sentenced into vaporific penetrating Venturi tube from various forms of nozzles Or in the steam of jet chimney, reduce vapor (steam) temperature.

Depressurized system：It is made up of pressure-reducing valve and restricting orifice, pressure-reducing valve reaches regulation pressure by changing circulation area Purpose.

Temperature reducing and pressure reducing system：Temperature reducing system and depressurized system are combined into one.

Live steam pipe body：It is made up of mixing tube and steam pipe etc..It is the main equipment of reducing-and-cooling plant, it is therefore an objective to by desuperheat Steam after decompression is sent on the pipeline that user needs.

Reducing-and-cooling plant main feature：

Depressurized system uses double-valve seat pressure-reducing valve structure, and out-of-balance force is small, and adjustable range is big, stable action, and no jam shows As.

Temperature reducing system is by the way of Wen Qiulishi adds flute pipe nozzle, and no transmission parts, desuperheating water atomizing effect is good, nozzle Convenient disassembly, it is easy to repair.

3. the technique application of temperature-decreased pressure reducer：

It is that 0.85MPa temperature is 180 DEG C low by pressure and temperature reducing after the main steam of HTHP enters temperature-decreased pressure reducer Steam is pressed, is sent into low-pressure steam pipe network, is used for chemical industry or other equipment.

Circulation：

Circulation is mainly by circulating water pool, other filtration filter, cooling tower, blower fan of cooling tower, dosing pump and circulation Waterpipe etc. is formed.The main function of recirculated water is to equipment or steam cooling, steam or equipment is reached normal operation Temperature.

Circulating pump is the circulation power of recirculated water.Circulating pump one shares three, and one of operation, one hot standby, one Cold standby.I.e. in normal productive process, an only pump operation.In the circulating pump of two stoppings, a pump is stand-by state.Work as fortune When capable pump stops, the stand-by pump automatic start.Last pump is not stand-by state, can be powered off.Convenient maintenance.

The effect of side filtration filter is the impurity in filtering, decontamination cycle water.The system can only be manually operated, it is impossible to automatic Backwash, production station need periodically to carry out backwash to it.

Wherein, recirculated water user is condenser, air cooler of generators and oil cooler.

In condenser, the effect of recirculated water is to the low-pressure steam cooling in condenser, is cooled to as aqueous water.

In air cooler of generators, recirculated water is cooled to generator.

In oil cooler, lubricating oil cooling of the recirculated water to heat, prevent that lubricating oil temperature is too high.

Water circulating pump is one with a hot standby cold standby.

Steam turbine generator：

Steam turbine is most widely used prime mover in modern steam power plant.It is the dry dynamic power machine for putting out generating, steam turbine Drive electrical power generators.

Steam turbine is by the rotary power machinery that the energy conversion of steam is mechanical work, is the main of Steam Power Equipment One of equipment.It is converted into rotating mechanical energy using steam as working medium, by the heat energy of steam, drives electrical power generators.In addition, steamer The exhaust and intermediate extraction of machine can be used for the heat supply that produces and live.Steam turbine have power is big, rotating speed is high, smooth running, use The advantages that long lifespan and variable-ratio are run, using quite varied in modern industry.

Steam turbine generator is mainly made up of regulating system, servo valve, impeller, cylinder, main shaft, generator, exciter etc.. Wherein regulating system adjusts high pitch by 505E, the aperture of low-key door also controls the power of steam turbine generator, rotating speed etc..Impeller It is the capital equipment of steam turbine generator acting, impeller drives main axis to be rotated so as to the rotor of generator, then passes through exciter Magnetic field is produced to stator coil excitation, stator rotation cutting magnetic induction line generates electricity.

The protection of steam turbine：

In order to ensure the safe operation of steam turbine, steam turbine is provided with necessary protection device.The conventional protection of steam turbine Device has：Overspeed protection, low oil pressure protection, rotor position protection, differential expansion protection, low vacuum protection, bearing temperature and vibration are protected Shield etc..When protection device acts, generally control automatic main throttle valve, quick-closing valve etc. rapidly, directly to cut off main steam and return The executive component on road, realizes quick shutdown.

Only when Protection parameters are more than set-point, executing agency can just act protection device.The regulation of protection device is moved Make there was only two ways, i.e. standard-sized sheet and fully closed, therefore also referred to as dibit is adjusted.

Overspeed protection：

Centrifugal force suffered by turbine rotor part and rotating speed it is square directly proportional.Rotating speed increase, the structure of rotor part Stress by by square relation increase sharply.Therefore, Steam Turbine Over-speed Accident operation is extremely dangerous.Steam turbine is equipped with hypervelocity and protected Protection unit, control turbine speed are no more than the 8%~12% of rated speed.

Embodiment：

One shares 5 speed probes, one of them three connection ZT2000-3 electronics intelligence in the steam turbine generator in 2# power stations Energy overspeed protective device, one is connected with live speed digital display meter, and one provides signal with 505E, and one is connected with PLC module. Really participate in overspeed protection control is ZT2000-3 electronic intelligence overspeed protective devices.The stable electric generation speed of steam turbine generator For 3000 revs/min（Frequency is 50 hertz）.

ZT2000-3 electronic intelligence overspeed protective devices are the capital equipments of high-speed rotating machine overspeed trip protection system, It receives three independent rotational speed probe signals respectively, carries out each independent monitor speed and calculate to detect, then according to three The voting result of two principles is selected, excites its relay contact to export.

ZT2000-3 electronic intelligence overspeed protective devices are to use micro-processor controlled Artificial Intelligence Instrument.It by three power supplys and The velocity measuring module composition of three units, each velocity measuring module is a Microprocessor Automatic Control System.Each There are independent input button, data output display, status indicator lamp and the rotary speed signal generator for the self-test that exceeds the speed limit.

During operation, each unit monitors respective hypervelocity condition and preserves maximum speed record and have the device The automatic function of refreshing and remove maximum speed manually.If hypervelocity occurs, this unit will send alarm and trip signal, Corresponding hypervelocity and tripping operation indicator lamp are bright simultaneously.If there is more than two units to send trip signal in three units, device is most Excite the contact of relay to export at last, make steam turbine generator tripping grinder.

The device also hypervelocity test, parameter setting and checks work(in addition to the function with the actual hypervelocity condition of monitoring Energy.Hypervelocity test is what is carried out with the 50KHz rotary speed signal generators inside each unit.When pressing feeler switch and correctly enter close After code, the signal input of this unit is switched to the rotary speed signal generator of inside from actual speed signal.

Rotor position protection：

Axial displacement limiting device is an important safety of Steam Turbine, for preventing that rotor is excessive because occurring Move axially and rubbed with cylinder stator part, led to a disaster.The general principle of axial displacement device is, by experiencing member Part, main shaft displacement signal is passed into governor motion control element and warning device.When axial displacement reaches certain numerical value, then Send alarm signal.When axial displacement exceedes given shutdown value, then oil pressure is made by spool control valve or magnetic force open circuit throttle Main inlet throttle-stop valve is closed, and realizes that automatic protection is shut down.

Low oil pressure protection：

Low oil pressure protection device is used to prevent that lubrication pressure is too low and causes steam turbine bearing to damage, and leads to a disaster.Low oil Pressure protection device action process be：When oil pressure is down to alarming value, alarm signal is sent, reminds operating personnel to pay attention to and take Requisite measure；When oil pressure is down to below safe operation value, automatic start auxiliary oil pump, recover oil pressure；When oil pressure is in auxiliary oil Continue to decline after pump startup, then the autostop when it is down to dangerous shutdown value；When oil pressure is less than jiggering oil pressure, then stop Jiggering.

The acquisition of low oil pressure signal is easier to realize.The primary element such as controlled oil pipe line and pressure switch is connected, Deform or move with pressure change by said elements, make corresponding microswitch, contact or disconnection, control report The generations such as alarm device, auxiliary oil pump and automatic main throttle valve act accordingly, reach the purpose of protection unit.Conventional receptor has Electro connecting pressure gauge, bellows pressure switch and piston spring device etc..

Differential expansion is protected：

Because cylinder is different with rotor shapes, material and quality, they expand and shunk when temperature changes Speed and of different sizes.The expansion of usual rotor, contraction speed are more than cylinder.Rotor and the difference of cylinder axial direction swell increment are referred to as " differential expansion ".We provide that when rotor expansion amount is more than cylinder differential expansion is on the occasion of on the contrary is negative value.Obviously start in steam turbine When, differential expansion be on the occasion of.And when halt turbines or removal of load, vapor (steam) temperature declines rapidly, and because rotor contraction is very fast, having can The situation that differential expansion is negative value can occur.Due to the presence of differential expansion, in the design of steam turbine impeller and dividing plate, packing broach with Axle convex platform etc. has reserved certain safety clearance with rotor part and between stator part, is installing with being answered especially in maintenance Pay attention to, it is ensured that these installation dimensions, to avoid danger.

Temperature change is excessive, too fast, is the main reason for causing differential expansion excessive.In operation, it should be noted that prevented Fast temperature change or the temperature difference, the strict requirement operation equipment by equipment operating manual.Especially pay attention to startup-shutdown, removal of load and The operation in particular cases such as steam initial parameter suddenly change.For example, when starting unit, cylinder comes into operation with flange heater Improper, heating vapour amount is excessive or too small；During hot starting, hot start, the temperature of initial steam is too low；Warming-up heating rate is too fast or during warming-up Between it is too short；Raising speed or increasing load are too fast；Unit airport logistic park or low load time are long after removal of load；Water slug occurs for unit；Newly Steam parameter change is too fast；Vapor (steam) temperature, which declines too fast grade, during shutdown may all cause excessive differential expansion, cause rotor and stator The axial grazing of generation, leads to a disaster.Each portion gap adjusts incorrect, sliding key system or axle in unit insulation failure, installation and repairing Bearing sheet makes cylinder swollen not smooth etc. because bite occurs for corrosion, and equipment installation and repairing maintenance reasons may also trigger the thing caused by differential expansion Therefore.

Differential expansion is protected for preventing that steam turbine is dynamic and static partially due to differential expansion is excessive and axial grazing occurs.Large-sized unit is general Differential expansion protection is designed with, i.e., when differential expansion is excessive, realizes urgent autostop.

Lubricating oil system：

The task of lubricating oil is mainly by two, and one is to provide power to regulating system, and one is carried to steam turbine generator For lubrication.

Regulating system：

The machine uses digital electro-hydraulic formula regulating system（Vehicle economy H）, hydraulic part by servo actuator, security system, And oil supply system composition.The each executing agency of electro-hydraulic control system is made up of electro-control converter and servomotor, completes controller Instruction control respective valves aperture；Security system completes manual shut-down, mechanical overspeed protection control and receives ETS protection magnetic valve shutdown；For Oil system includes low pressure main oil pump oil supply system and the special oil supply system of servo valve：Low-pressure oil supply system provides lubrication, security department Set and servomotor action fuel feeding；The special oil supply system of servo valve is to servo valve fuel feeding.

DEH_NK steam turbine digital formula electrohydraulic control systems, by computer control section（Also it is numerical control system）And EH Hydraulic actuating mechanism forms.System control accuracy, automatization level are high, while thermoelectricity load also greatly improves from whole property, its energy Realize raising speed（Manually or automatically）, coordinate electrically grid-connected, spatial load forecasting（Control of valve position or power and frequency control）, thermic load of drawing gas control And other auxiliary controls, and communicated with 505, control parameter on-line tuning and over-speed protection function etc..It can adapt to steam turbine each Kind operating mode and long-term safety operation.

505E controllers based on 32-bit microprocessor be applied to have once it is adjustable it is pure draw gas, take out/mend combination or The control of pure filling pattern turbine.505E control can field programming configuration so that the design of standard can be suitably used for various differences Control occasion, reduce and manufacturing cost and shorten the delivery cycle.Controller uses menu-driven software to guide live work According to specific hair, electrically or mechanically dragging application requirement is programmed configuration to controller to Cheng Shi.

Lubricating system：

The main task of lubricating oil system is except qualified to each bearing support of Turbo-generator Set, thrust bearing offer Lubrication, outside cooling oil, also provides oil bath for each clutch, main oil pump, provide and test and again for eccentric winged ring emergency governor Return with oil.In addition, lubricating oil also provides reliable and stable oil sources for jacking oil system；In case of emergency, generator Seal Oil Also can be provided by lubricating oil system, to ensure unit safety, reliability service.In addition, lubricating oil has enters barring gear collection all the way Oily weir, oil bath, lubrication are provided for jiggering gear；Another way is after magnetic valve, by nozzle continuously oil spout, lubricating transmission gear.

The effect for controlling oily oil filter and lubricating oil oil filter is filtering lubricant oil caused impurity in cyclic process, is made Lubricating oil keeps clean.The lubricating oil influential point of viscera cause axle shake increase, axle temperature rise the problems such as.

In lubricating system, lubricating oil also cools while being lubricated to steam turbo generator to axle and bearing.It is same with this When, the temperature of lubricating oil will raise, so there is an oil cooler in this circulation, cool to lubricating oil.

Fuel tank heater is to be heated before steam turbine generator start to lubricating oil, and lubricating oil use needs arrival must Temperature.In running usually, fuel tank heater be without using.

During steam turbine generator normal operation, only main oil pump is operation.Main oil pump is located inside steam turbine head.Work as control When liquefaction pressure is low, auxiliary oil pump can automatic start.

When the low alarm of lubricating oil pressure, grease pump starts, while steam turbine generator stops.

Turning motor starts before steam turbine generator starts and after shutting down, and does not start when usually running, jiggering The condition of electric motor starting is that lubricating oil pressure is more than 0.05MPa, and rotating speed is less than 100rpm/min.The linkage relationship in power station

The chain halt condition of steam turbine generator：

（1）Axle temperature

Steam turbine pair thrust bearing temperature（TE441Ab）HH 100℃ PIW512

Steam turbine pair thrust bearing temperature（TE441Bb）HH 100℃ PIW528

Steam turbine positive thrust bearing temperature（TE443Ab）HH 100℃ PIW544

Steam turbine positive thrust bearing temperature（TE443Bb）HH 100℃ PIW560

Journal bearing temperature before steam turbine（TE445b） HH 100℃ PIW514

Journal bearing temperature after steam turbine（TE447b） HH 100℃ PIW530

Journal bearing temperature before generator（TE449b） HH 100℃ PIW519

Journal bearing temperature after generator（TE451b） HH 90℃ PIW532

（2）Oil temperature：

Dynamo bearing returning-oil temperature（TE467b）HH 70℃ PIW566

（3）Oil pressure：

Fast-cut oil pressure（PT069）L -0.3 PIW692；

（4）Pressure switch：

Exhaust steam pressure（PS043b）HH I0.0；

Suction pressure（PS029b）LL I0.1；

Lubricating oil pressure（PS003b）LL I0.2；

（5）TSI：

Turbine shaft displacement（ZSH769b）HH alarms H：0.6mm, shut down HH：0.8mm I1.0；

Shaft vibration before steam turbine（VSH735Ab）HH alarms H：90um, shut down HH：120um I1.1；

Shaft vibration before steam turbine（VSH735Bb）HH alarms H：90um, shut down HH：120um I1.2；

Shaft vibration after steam turbine（VSH737Ab）HH alarms H：90um, shut down HH：120um I1.3；

Shaft vibration after steam turbine（VSH737Bb）HH alarms H：90um, shut down HH：120um I1.4；

Steam turbine differential expansion（ZDSH775b）HH alarms H：4.5mm, shut down HH：4.8mm I1.5；

Shaft vibration after generator（VSH741Ab）HH alarms H：90um, shut down HH：120um I1.6；

Shaft vibration after generator（VSH741Bb）HH alarms H：90um, shut down HH：120um I1.7；

（6）Other：

2003 electric overspeed trips（XS026B） I0.3；

505E is shut down（XS012b） I0.4；

Central Control Room promptly stops steam turbine（HS009b） I2.2；

Generator protection is shut down（GX901b） I2.3；

Auxiliary oil pump chain promoter condition：

Control-oil pressure is low；

Emergency bearing oil pump chain promoter condition：

Lubricating oil pressure is low；

The chain condition of turning motor：

Turning motor entry condition：

Lubricating oil pressure is more than 0.05MPa；

Steam turbine generator rotating speed is less than 100rpm/min.

The chain stop condition of turning motor；

Lubricating oil pressure is less than 0.05MPa；

The chain promoter condition of other each pumps：

The chain promoter condition of spare circulating pump is：The operation feedback point for running pump is lost；

The chain promoter condition of standby solidifying pump is：The trouble point for running pump is come；

The chain promoter condition of standby water-jet pump is：The operation feedback point of operation pump is lost；

The startup-shutdown of steam turbine generator：

Steam turbine starts：

The startup method of steam turbine can be divided into by the difference of steam parameter：Nominal parameter starts and sliding parameter starts；By punching Valve used in dynamic control rotating speed can be divided into：Timing steam gate starts, automatic main throttle valve and electronic main shutter start, and by total steam valve Road door starts.Starting mode can be divided into cold start and hot starting, hot start.

Nominal parameter starts remains rated value in the stylish steam parameter of starting, and body is controlled by limiting flow Temperature rise.Cold start is carried out in this way, can form the larger temperature difference, and too small flow can cause heating uneven.Cause This warm-up period is grown, and unfavorable to the safety of unit.But its operation is relatively simple, in the occasion that steam parameter can not change such as Piping-main scheme steam supply or small unit are applicable.

Sliding parameter startup be main steam condition random groups rotating speed, the rising of load and it is sliding.Can accomplish low parameter start, Warming-up, steam flow is big, homogeneous heating, is advantageous to energy-conservation and extension device life-span.But operation and control are complicated.

1. the preparation before starting：

Preparation before startup includes：

Systems inspection：Check that each valve is intact, flexible and valve position is correct, check that the intact display of each instrument is normal, check and slide Pin, expand each position gaps such as instruction and display normally and note down, check that subsidiary engine equipment is normal.

Heating coil：During cold start, palpus steam drainage heating coil before main steam line to servo valve, steam leakage, pipe are checked Road expands and pipe-hanger support situation.

Oil system circulates：Start oil system after heating coil, it is oil-filled to drive air.Lifting oil temperature, inspection oil system leakage situation, Fuel level in tank and bearing oil return situation etc..Appropriate oil temperature is advantageous to establish oil film, ensures the bearing capacity and stability of bearing shell.

Adjust protection device experiment：By operating standard carry out the protection device such as overspeed protection, low oil pressure and axial displacement and Adjusting means static test.

Jiggering：Jiggering is opened by code, bending shaft is eliminated, checks whether there is grazing phenomenon.Usual cold start-up jiggering 2h, Hot starting jiggering should not be less than 4h.

Start subsidiary engine：It should be supplied before red switch to axle envelope, air ejector should be put into for extraction condensing type unit, it is true to establish condenser Sky, back pressure type then open air-out tube valve, close grid-connected steam valve.

Red switch and raising speed warming-up：

To be checked before steam turbine red switch and confirm whether initial steam parameter meets the requirements, condenser vacuum value is it is ensured that to idle discharge Steam valve is opened, and back pressure type, lubricating oil pressure, oil return and temperature are in prescribed limit；And high, intermediate cylinder upper and lower temperature difference is not more than 50 DEG C, jiggering is without exception., can be according to the speed of regulation after red switch, usually 100-300rpm, lifts rotating speed, in rotating speed During 400-600rpm, generating set operation conditions is comprehensively checked.The generally use 300- when passing through critical speed 600rpm relatively promotion speed, while the vibration state of unit should be paid close attention to, after critical speed, when should stablize one section Between, to ensure that body heating is uniform, rotating speed is finally risen into rated speed by defined raising speed rate.In whole raising speed warming-up process In, body and exhaust temperature should be monitored at any time.Hydrophobic, the record swollen instruction reading of cylinder of cylinder body and pipeline is paid attention to, to ensure up and down Temperature difference of the cylinder within the limits prescribed, prevents from causing block distortion because expansion is inconsistent, while ensures body by correct heating Speed tides over the brittle transition temperature of material.For hot starting, hot start, according to organism temperature situation and the regulation of equipment code, Warm-up period can shorten even without warming-up.

Grid-connected on-load：

After unit reaches rated speed, confirm that operation conditions is normal, you can carry out grid-connected on-load.Taken after grid-connected initial Load, provided by unit code.Now throttle flow increases, unit temperature meeting rapid increase, palpus stable a period of time, equivalent to band Load warming-up, about 1h or so.Either run, all should be supplied by the requirement of equipment code or equipment by electric load or by thermic load The start up curve that business provides, steps up load, to ensure that unit temperature uniformly raises.

The shutdown of steam turbine：

Normal operating condition off-the-line generator, is cut off into vapour, the process to stationary rotor is referred to as steamer hair to unloading The stopping process of motor.Shutdown is divided into two kinds of situations of orderly closedown and disorderly closedown.Orderly closedown is pressed to shutdown steam parameter It is required that it is different, it is divided into shutdown at rating parameters and shutdown at sliding parameters two ways.

Shutdown at rating parameters since specified operation conditions, keeps the original state of steam, by normal shutdown curve, The shutdown operation of unit load is reduced by reducing throttle flow.Unit keeps higher temperature levels after shutdown, for of short duration Shut down and be applicable.

Shutdown at sliding parameters reduces steam parameter to the lower limit allowed i.e. before shutdown.The aperture of timing steam gate is improved, simultaneously Come into operation cylinder flange heater, is minimized organism temperature.By shutdown curve at sliding parameter, joined by gradually reducing main steam Count to reduce unit load to zero.When main steam condition is down to certain numerical value, off-the-line generator beats gate stop-start.Shutdown at sliding parameters It is to be gradually completing by the cyclic order of cooling-decompression-load down, is advantageous to the cooling of unit, suitable for maintenance down Situation.Shutdown at sliding parameters should be noted that the degree of superheat for ensureing steam is not less than 50 DEG C.Due to the degree of superheat of steam during shutdown at sliding parameters It is not high, it should forbid doing overspeed test during shutdown at sliding parameters.

1. the preparation before shutting down：

The fine status of palpus starting device when nuclear test is shut down, such as high-pressure oil pump, auxiliary lube oil should be checked before shutdown Pump, barring gear and main inlet throttle-stop valve etc..

2. load shedding：

By the requirement of shutdown curve, progressively load shedding is to zero, off-the-line generator.It should be noted that unit is hydrophobic during load shedding.

3. rotor coasting operation：

I.e. steam turbine is made lock and stopped into after vapour, and rotor continues to be rotated up static process by inertia.In new unit or Rotor coasting operation rotating speed and the relation curve of time should be drawn after major overhaul.Other time should measure and record rotor it is lazy stop when Between compared with rotor idling curve.Idling time length is probably that the valve on initial steam pipe, timing steam gate and extraction line is not tight, There is steam to enter cylinder；Idling time shortening is probably then the frictional resistance increase of the dynamic and static part of steam turbine, all should be found out Reason is handled.

4. jiggering：

Barring gear should be put into after stationary rotor immediately and carries out continuous jiggering, until cylinder temperature is less than certain numerical value, Thermal flexure occurs to prevent rotation stop.

Claims (1)

1. dry coke quenching generating heat reclamation device, in coke oven（1）Upper end is provided with exhaust opening（2）, flue heat is connected with exhaust opening Recovery tube（2.1）, coke outlet is provided with the side of coke oven（3）, coke outlet and quenching stove（4）Communicate, on quenching stove top Side is equipped with inert gas blower（5）, heat-exchange tube is provided with quenching stove inner disc（6）, inert gas blower and heat-exchange tube phase It is logical, it is provided with put-focus valve in quenching stove bottom（7）, it is characterized in that：

Vapours collector is connected with heat-exchange tube（8）, vapours collector passes through pipeline and Balance Air pressure chamber（10）Even Connect, regulating valve is housed on pipeline（9）, Balance Air pressure chamber side is connected with steam turbine（12）, it is provided with Balance Air pressure chamber bottom Condensate return pipe（11）, Low Temperature Steam return duct is connected with the side of steam turbine（13）, flue recovery tubes, condensed water return Flow tube and Low Temperature Steam return duct pool together, and as heat energy efferent duct, jet carbonated drink converter is housed on heat energy efferent duct （14）, jet carbonated drink converter one end is provided with hot water outlet（15）.