CN204299629U - A kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device - Google Patents
A kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device Download PDFInfo
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- CN204299629U CN204299629U CN201420781212.3U CN201420781212U CN204299629U CN 204299629 U CN204299629 U CN 204299629U CN 201420781212 U CN201420781212 U CN 201420781212U CN 204299629 U CN204299629 U CN 204299629U
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Abstract
The utility model discloses a kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device, comprise the machine and adjacent machine, the machine is provided with the auxiliary vapour header of the machine, the auxiliary vapour header of the machine connects boiler reheater, boiler reheater connects Steam Turbine Through IP Admission, adjacent machine is provided with the auxiliary vapour header of adjacent machine, and adjacent machine auxiliary vapour header is connected by the auxiliary vapour header of pipeline and the machine.Adjacent machine source of the gas is delivered to the auxiliary vapour header of the machine from adjacent machine auxiliary vapour header by pipeline by the utility model, carry out the machine intermediate pressure cylinder start-up, the machine boiler, startup blower fan and electrically driven feed pump are without the need to work, station service and fuel oil can be saved, complete the quality examination after overhaul of steam turbine, rotor turns is driven to do work on the spot, and can red switch be shifted to an earlier date, inspection installation quality and carry out the no-load test of electric part before set grid-connection, operation during reducing this, maintenance workload, boiler can also be alleviated, steam turbine maintenance duration is inharmonious, thus realize energy-conservation, consumption reduction, unit economy and reliability high, utilization rate is high.
Description
Technical field
The utility model relates to and a kind ofly has energy-conservation, that consumption reduction, economy, reliability, utilization rate are high unit style unit and utilize adjacent vapour to start intermediate pressure cylinder device.
Background technology
For a long time during large unit unit maintenance, often occur that the maintenance duration of boiler and steam turbine can not be well harmonious, overhaul of steam turbine complete urgent need inspection maintenance effect or need at the scene drives rotor turns to make work on the spot (as dynamic balancing etc.) and boiler because certain reason can not be lighted a fire often.And light a fire again after boiler maintenance, find that overhaul of steam turbine poor effect needs to do over again when starting steam turbine, delay the duration.The maintenance duration extending unit, the reliability reducing equipment, utilization rate and economy.Just exist during large thermal power plant unit style unit design between adjacent cells and can not switch mutually, when the capital equipment fault in a unit can not be run, whole unit all can only be stopped transport.Operational flexibility is poor is cause the main cause that the steam turbine boiler maintenance duration can not be harmonious very well.
From the situation of units, terminate to electrical test from ignition of the boiler, about 60 hours used times, consume fuel oil about 300t, consume expense 2,400,000 yuan/platform; Boiler startup blower fan simultaneously, steam turbine starts electrically driven feed pump, and unit starting expends station service: (6300+3000+1700) * 60=660000kw.h/ platform, consumes expense 330,000 yuan/platform, amounts to consumption expense 2,730,000 yuan/platform, expensive.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of unit style unit to utilize adjacent vapour to start intermediate pressure cylinder device, boiler fan can be realized do not start, misfire, steam turbine side need not start electrically driven feed pump, the intermediate pressure cylinder start-up of steam turbine can be realized, complete the quality examination after overhaul of steam turbine, drive rotor turns to do work on the spot (as dynamic balancing etc.) and the no-load test of electric part before carrying out set grid-connection, to overcome prior art Problems existing.
The technical scheme that the utility model is taked is: a kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device, comprise the machine and adjacent machine, described the machine is provided with the auxiliary vapour header of the machine, the auxiliary vapour header of described the machine connects boiler reheater, described boiler reheater connects Steam Turbine Through IP Admission, described adjacent machine is provided with the auxiliary vapour header of adjacent machine, be connected on adjacent machine reheating cold section of pipe, adjacent machine auxiliary vapour header is connected by the auxiliary vapour header of pipeline and the machine.
Described pipeline arranges valve, source of the gas connected sum can be cut off, and the pressure size that energy steam regulation flows through, and play the effect of safeguard protection.
Described valve adopts motor regulated valve, is convenient to automatic control, reduces labour intensity, controls accurately.
Described pipeline employing external diameter is 377mm, wall thickness is the pressure pipeline of 16mm, can meet the red switch pressure requirements of intermediate pressure cylinder in the machine, and is convenient to welding and installs.
The beneficial effects of the utility model: compared with prior art, the utility model adopts pipeline to be connected by auxiliary to auxiliary for the machine vapour header and adjacent machine vapour header, adjacent machine vapour source is transported to the machine start intermediate pressure cylinder, the machine boiler need not start blower fan and igniting, steam turbine then need not start electrically driven feed pump, station service and fuel oil can be saved, complete the quality examination after overhaul of steam turbine, rotor turns is driven to do work on the spot (as dynamic balancing etc.), and can red switch be shifted to an earlier date, inspection installation quality and carry out the no-load test of electric part before set grid-connection, simultaneously, operation during also can reducing this, maintenance workload, boiler can also be alleviated in addition, the inharmonic contradiction of steam turbine maintenance duration, have energy-conservation simultaneously, consumption reduction, unit economy and reliability high, the advantage that energy utilization rate is high, adopt consumption expense 30,000/platform that pipeline connects, compare and adopt the machine directly to start the 2730000/platform expended, there is very high economic utility.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, the auxiliary vapour header of the adjacent machine of 1-, 2-pipeline, 3-valve, the auxiliary vapour header of 4-the machine, 5-boiler reheater, 6-the machine intermediate pressure cylinder, 7-condenser, the adjacent machine reheating of 8-cold section of pipe, cold section of 9-the machine reheating pipe.
Detailed description of the invention
As shown in Figure 1, a kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device, comprise the machine and adjacent machine, described the machine is provided with the auxiliary vapour header 4 of the machine, the auxiliary vapour header 4 of described the machine connects boiler reheater 5, described boiler reheater 5 connects Steam Turbine Through IP Admission 6, described adjacent machine is provided with the auxiliary vapour header 1 of adjacent machine, be connected on adjacent machine reheating cold section of pipe 8, adjacent machine auxiliary vapour header 1 is connected by the auxiliary vapour header 4 of pipeline 2 and the machine, pipeline is adopted to be connected by auxiliary to auxiliary for the machine vapour header and adjacent machine vapour header, close the valve in corresponding host computer system, successively from cold section of adjacent machine reheating, the auxiliary vapour header of adjacent machine, the auxiliary vapour header of main frame, cold section of main frame reheating, main frame stove reheater and main frame intermediate pressure cylinder form airtight vapour source channels, adjacent machine vapour source is transported to the machine start intermediate pressure cylinder, finally discharge from the condenser 7 be connected with intermediate pressure cylinder, realize punching cylinder red switch, the machine boiler need not start blower fan and igniting, steam turbine then need not start electrically driven feed pump, station service and fuel oil can be saved, complete the quality examination after overhaul of steam turbine, rotor turns is driven to do work on the spot (as dynamic balancing etc.), and can red switch be shifted to an earlier date, inspection installation quality and carry out the no-load test of electric part before set grid-connection, simultaneously, operation during also can reducing this, maintenance workload, boiler can also be alleviated in addition, the inharmonic contradiction of steam turbine maintenance duration, have energy-conservation simultaneously, consumption reduction, unit economy and reliability high, the advantage that energy utilization rate is high, adopt consumption expense 30,000/platform that pipeline connects, compare and adopt the machine directly to start the 2730000/platform expended, there is very high economic utility.
Described pipeline 2 arranges valve 3, source of the gas connected sum can be cut off, and the pressure size that energy steam regulation flows through, and play the effect of safeguard protection.
Described valve 3 adopts motor regulated valve, the hydraulic operated valve of to be a kind of with magnetic valve be pilot valve, controls reaction accurately fast, opens and closes pipe roadnet according to signal of telecommunication remote control, realize operated from a distance, and gate valve and butterfly valve can be replaced for Large Electric operating system.Valve closing speed is adjustable, and steadily close and do not produce pressure oscillation, this valve volume is little, lightweight, easy to maintenance, esy to use, safe and reliable, is convenient to automatic control, reduces labour intensity, controls accurately.
Described pipeline 2 adopts that external diameter is 377mm, wall thickness is the pressure pipeline of 16mm, and size is identical with the pipe external diameter of existing equipment, can meet the red switch pressure requirements of intermediate pressure cylinder in the machine, and is convenient to welding and installs.
As shown in Figure 1, provide the adjacent machine in vapour source to be No. 2 machines for ease of describing existing supposition, the machine preparing to utilize adjacent machine vapour source to start is No. 1 machine.
A kind of unit style unit utilizes adjacent vapour startup intermediate pressure cylinder device to comprise pipe-line system transformation process and field conduct process two parts.
Embodiment 1: a kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device pipe-line system transformation implementation process:
(1) No. 1 machine reheating cold section to No. 1 machine auxiliary vapour header non-return flap spool is removed;
(2) remove No. 1 machine reheating cold section to No. 1 machine auxiliary vapour header electric adjustable section door, carry out short circuit with short tube;
(3) remove No. 2 machine reheating cold section to No. 2 machine auxiliary vapour header electric adjustable section door, carry out short circuit with short tube;
(4) No. 2 machine reheating cold section to No. 2 machine auxiliary vapour header Electrically operated gate switch is set to 5 pulse per second (PPS)s electronic;
(5) all the other whole original pipe-line systems are constant, adopt pipeline to be connected No. 1 machine auxiliary vapour header, and arrange valve with No. 2 auxiliary vapour headers of machine on this pipeline;
(6) caliber of the pipeline selected in above steps, wall thickness and material, should be consistent with former pipeline, undertaken during welding by material requirement.
Embodiment 2: a kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device field conduct process:
(1) No. 1 machine circulation carries out water filling, 1, No. 2 unit is followed pump discharge communicating door to be opened to 50%, No. 2 machines are utilized to follow pump to No. 1 machine for recirculated water, open open type water pump bypass door to No. 1 hydrogen-cooled device of unit, closed water cooler, stator cooling water cooler water filling air-discharging, No. 1 machine can be made simultaneously and follow pump interlock test and recover for subsequent use;
(2) No. 1 generator unit cooling water system water fillings, start a cooling water pump and run;
(3) condenser water replenishing is to ordinary water level 800 ~ 1000mm;
(4) condensate system water filling air-discharging;
(5) shielding system forms intermediate pressure cylinder start-up passage: (a) closes that No. 1 machine is crossed, reheater desuperheating water manually operated door, close high other desuperheating water Electrically operated gate; B () closes by No. 1 machine height, the stifled valve of superheater test, high row's non-return flap; C () is closed No. 1 auxiliary vapour header of machine and is heated manually operated door to oxygen-eliminating device, close No. 1 machine auxiliary vapour header to the total door of little machine vapour, close the total door of vapour such as heating at the bottom of No. 1 auxiliary vapour header to Boiler Furnace of machine, close No. 1 machine auxiliary vapour header to the total door of coal pulverizer steam for fire xtinguishing, close No. 1 machine auxiliary vapour header to the total door of HVAC vapour, close starting trouble to 1 machine auxiliary vapour header admission manually operated door; C () closes little machine steam discharge dish valve and little machine steam discharge desuperheat water valve;
(6) start a condensate pump and play recirculation, supply water to solidifying assorted jellyfish pipe simultaneously;
(7) start vavuum pump to vacuumize condenser, observe vavuum pump cooling water and should put into operation normally;
(8) condenser vacuum utilizes No. 2 machine auxiliary vapour vapour sources to carry out heating coil to No. 1 auxiliary vapour header of machine, shaft seal vapour system, No. 1 machine cold segment pipe after reaching 0.03 ~ 0.05MPa;
(9) drop into No. 1 arbor envelope vapour after shaft seal steam heating duct ligation bundle, little arbor envelope vapour is not thrown;
(10) main frame unit red switch: (a) No. 1 machine starts vapour source to be provided by No. 2 machine auxiliary steam sources, and vapour source and course specifically flows to as follows through equipment: No. 2 machine reheating cold section-No. 2 machine auxiliary vapour header-No. 1 machine auxiliary vapour header-No. 1 machine reheating cold section-No. 1 stove reheater-No. 1 machine intermediate pressure cylinder; Steam parameter during (b) red switch: pressure 0.6 ~ 0.8MPa, temperature 240 ~ 260 DEG C before reheat stop interceptor valve, the load >=450MW of No. 2 units; C the front No. 1 low side of machine of () No. 1 machine unit red switch is opened to 10%, before utilizing cold section of No. 2 machine reheating to auxiliary vapour header Electrically operated gate to regulate No. 1 machine reheat stop interceptor valve, pressure is at 0.8 ~ 0.9MPa, and 1, No. 2 machine auxiliary vapour header safety door does not answer action; Setting rotating speed of target d () No. 1 machine unit hangs lock after is 200r/min, and raising speed rate 100r/min/min, carries out red switch, notes jiggering dropout situation after the red switch of No. 1 machine unit, utilizes low other regulable control reheat steam pressure; E () is tended towards stability depending on No. 1 machine reheat steam pressure, after No. 2 machine steam water-levels are stable, setting rotating speed of target is 1500r/min, raising speed rate 100r/min/min, continue raising speed, turn down No. 1 low side of machine in boosting velocity procedure gradually until closed, utilize that No. 2 machines are cold controls No. 1 machine reheat pressure at 0.8 ~ 0.9MPa to auxiliary vapour header Electrically operated gate again; F () No. 1 machine generating unit speed to rise to after 1500r/min warming-up 60 minutes, measure each bear vibration, depending on the swollen difference of unit, after cylinder is swollen, the casing wall temperature difference reaches equipment operating prescribed limit, continues raising speed; G () No. 1 machine generating unit speed rises to 3000r/min, measure each bear vibration.
Claims (4)
1. a unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device, comprise the machine and adjacent machine, described the machine is provided with the auxiliary vapour header (4) of the machine, the auxiliary vapour header (4) of described the machine connects boiler reheater (5), described boiler reheater (5) connects Steam Turbine Through IP Admission (6), described adjacent machine is provided with the auxiliary vapour header (1) of adjacent machine, be connected in cold section of adjacent machine reheating pipe (8), it is characterized in that: adjacent machine auxiliary vapour header (1) is connected by the auxiliary vapour header (4) of pipeline (2) and the machine.
2. a kind of unit style unit according to claim 1 utilizes adjacent vapour to start intermediate pressure cylinder device, it is characterized in that: described pipeline (2) is arranged valve (3).
3. a kind of unit style unit according to claim 2 utilizes adjacent vapour to start intermediate pressure cylinder device, it is characterized in that: described valve (3) adopts motor regulated valve.
4. a kind of unit style unit according to claim 1 utilizes adjacent vapour to start intermediate pressure cylinder device, it is characterized in that: described pipeline (2) employing external diameter is 377mm, wall thickness is the pressure pipeline of 16mm.
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| CN201420781212.3U CN204299629U (en) | 2014-12-12 | 2014-12-12 | A kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device |
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| CN201420781212.3U CN204299629U (en) | 2014-12-12 | 2014-12-12 | A kind of unit style unit utilizes adjacent vapour to start intermediate pressure cylinder device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612763A (en) * | 2014-12-12 | 2015-05-13 | 贵州电力试验研究院 | Device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit and starting method thereof |
| CN105781702A (en) * | 2016-04-28 | 2016-07-20 | 浙江大唐国际绍兴江滨热电有限责任公司 | Cooling system of generating unit |
| CN111911252A (en) * | 2020-08-04 | 2020-11-10 | 福建省鸿山热电有限责任公司 | Supercritical heat supply unit and cold-state starting method thereof |
-
2014
- 2014-12-12 CN CN201420781212.3U patent/CN204299629U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612763A (en) * | 2014-12-12 | 2015-05-13 | 贵州电力试验研究院 | Device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit and starting method thereof |
| CN104612763B (en) * | 2014-12-12 | 2017-01-25 | 贵州电力试验研究院 | Starting method of device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit |
| CN105781702A (en) * | 2016-04-28 | 2016-07-20 | 浙江大唐国际绍兴江滨热电有限责任公司 | Cooling system of generating unit |
| CN111911252A (en) * | 2020-08-04 | 2020-11-10 | 福建省鸿山热电有限责任公司 | Supercritical heat supply unit and cold-state starting method thereof |
| CN111911252B (en) * | 2020-08-04 | 2024-04-02 | 福建省鸿山热电有限责任公司 | Supercritical heat supply unit and cold starting method thereof |
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