CN108506057A - A kind of co-generation unit and adjusting method for cutting off low pressure (LP) cylinder into vapour - Google Patents
A kind of co-generation unit and adjusting method for cutting off low pressure (LP) cylinder into vapour Download PDFInfo
- Publication number
- CN108506057A CN108506057A CN201810171002.5A CN201810171002A CN108506057A CN 108506057 A CN108506057 A CN 108506057A CN 201810171002 A CN201810171002 A CN 201810171002A CN 108506057 A CN108506057 A CN 108506057A
- Authority
- CN
- China
- Prior art keywords
- steam
- low
- cylinder
- turbine
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a kind of co-generation units and adjusting method for cutting off low pressure (LP) cylinder into vapour.It when cutting off low pressure (LP) cylinder into vapour, not only needs to implement effectively cooling to low pressure (LP) cylinder, also needs to consider the danger that excision low pressure (LP) cylinder is likely to cause the bored cylinder of intermediate pressure cylinder into vapour.In the present invention：Steam Turbine Through IP Admission is connect by communicating pipe and cooling steam pipe with turbine low pressure cylinder；Back pressure butterfly valve is installed on communicating pipe and is taken out and coagulates butterfly valve；Reducing-and-cooling plant and water separator are installed on cooling steam pipe；Low plus the hydrophobic of heater is sequentially connected；The feed-water inlet pipe and hydrophobic outlet of the hydrophobic plus heater low with No. three of heat supply network are connect.The present invention is while realizing that turbine low pressure cylinder is effectively cooling, the cascade utilization for realizing middle Low Temperature Thermal recycles and convinces by patient analysis soon vapour bypass by the way that water supply is arranged, realizes the discharge of Steam Turbine Through IP Admission steam discharge, it prevents Steam Turbine Through IP Admission bored cylinder phenomenon occur, improves the safety of system operation.
Description
Technical field
The invention belongs to cogeneration of heat and power technical fields, and in particular to a kind of cogeneration of heat and power system for cutting off low pressure (LP) cylinder into vapour
System and adjusting method.
Background technology
Currently, China's policy gradually payes attention to the popularization of new energy, the ratio of fired power generating unit is reduced.For thermal power plant,
The steam exhaust of steam turbine is typically to be fallen by air-cooled or water-cooling pattern direct emission, this has resulted in huge cold end loss.
Such as the capacity usage ratio of the subcritical pure condensate units of 300MW is about 38%, wherein cold end loss accounts for about 45%, after extraction for heat supply
The capacity usage ratio of unit is promoted to 60%, but still has 20% condensation low temperature exhaust heat to be discharged, this partial heat is due to product
Position is low and is difficult to directly utilize.Simultaneously as power grid is consumption new energy electric power, the requirement to coal motor group thermoelectricity flexibility is not
Disconnected to reinforce, coal motor group need to realize Ultra-low load operation, could meet the peak regulation demand of power grid, this brings to coal-fired thermal power unit
Great challenge.
Currently, application No. is 201710193938.3 Chinese patent " steam turbine extraction condensing back pressure system and its adjusting method ",
Nothing needs to change rotor, you can realize that low pressure (LP) cylinder does not put into operation, which can not only increase external heating load to the greatest extent, but also
It can be generated electricity with the realization unit underload of high benefit.When cutting off low pressure (LP) cylinder into vapour, not only there is practical cooling technology with after
Cylinder water spray Best available control technology is implemented low pressure (LP) cylinder effectively cooling；It also needs to consider that excision low pressure (LP) cylinder is likely to cause middle pressure into vapour
The danger of the bored cylinder of cylinder.In addition, when excision low pressure (LP) cylinder is into vapour, the heat regenerative system of low pressure (LP) cylinder ensures that low pressure (LP) cylinder returns at this time no longer into vapour
The economy of hot systems operation and safety, and realize turbine low pressure cylinder not into one of the key technology of automotive row.
Invention content
Based on the above situation, the present invention overcomes above-mentioned deficiency existing in the prior art, it is proposed that a kind of reasonable design, property
Can be reliable, co-generation unit and adjusting method for cutting off low pressure (LP) cylinder into vapour.
Technical solution is used by the present invention solves the above problems：It is a kind of to be used to cut off cogeneration of heat and power of the low pressure (LP) cylinder into vapour
System, it is characterised in that：Including Steam Turbine Through IP Admission, turbine low pressure cylinder, condenser, condensate pump, gland heater, No.1
Low plus heater, No. two low plus heater, No. three low plus heater, drainage pump, reducing-and-cooling plant, water separator, streams
Measuring device, heat exchangers for district heating and rear cylinder water injector；The steam drain of the Steam Turbine Through IP Admission passes through communicating pipe and steamer
The air intake of machine low pressure (LP) cylinder connects, and moves direction along steam stream on communicating pipe and be sequentially installed with back pressure butterfly valve and take out and coagulate butterfly
Valve；The steam drain of the Steam Turbine Through IP Admission is also connected by the air intake of cooling steam pipe and turbine low pressure cylinder, and cold
But direction is moved along steam stream be sequentially installed with the first shut-off valve, reducing-and-cooling plant, water separator, flow on steam pipe
Measuring device, the first regulating valve and the second shut-off valve；The reducing-and-cooling plant is connected with desuperheat water pipe；The steam-water separation dress
The separation water out set is connect by detaching water pipe with condenser；The steam drain of the turbine low pressure cylinder is connect with condenser；
The condenser is connect with boiler feed pipe, and condensate pump, axis are sequentially installed in boiler feed pipe upper edge dampening flow direction
Seal low heater, No.1 plus heater, No. two low plus heaters and No. three low plus heaters；The No.1 is low plus heater into
Steam ports by the way that No.1 is low plus the No.1 extraction opening of extraction steam pipe and turbine low pressure cylinder connects, No.1 is low plus extraction steam pipe on be equipped with
The steam (vapor) outlet of second gate valve, second gate valve is also associated with gland packing leakage pipe；Described No. two low plus heater air intakes
By the way that No. two low plus No. two extraction openings of extraction steam pipes and turbine low pressure cylinder connect, and No. two low plus extraction steam pipe on be equipped with the
One gate valve；Described No. three low plus heater air intakes are connected by the steam drain of No. three low plus extraction steam pipes and Steam Turbine Through IP Admission
It connects；The air intake of the heat exchangers for district heating is connected by heating extraction steam pipe and the steam drain of Steam Turbine Through IP Admission；Described No. three low
The hydrophobic outlet of heater is added to be connect by the hydrophobic import for adding heater low with No. two of No. three backheat drain pipes；Described No. two low
Add the hydrophobic outlet of heater to be connect by the hydrophobic import for adding heater low with No.1 of No. two backheat drain pipes, and is returned at No. two
4th regulating valve is installed on thermal drain pipe；The No.1 is low to be added the hydrophobic outlet of heater by No.1 backheat drain pipe and coagulates
Vapour device connects.
Preferably, the hydrophobic outlet of the heat exchangers for district heating passes through the low water supply for adding heater of heating drain pipe and No. three
Import connects.
Preferably, the hydrophobic outlet of the heat exchangers for district heating also adds the three of heater by the way that heating drain pipe and No. three are low
The connection of number backheat drain pipe.
Preferably, described No. two low plus heater hydrophobic outlets also add by the way that the hydrophobic branch pipe of No. two backheats and No. two are low
The feedwater outlet of heater connects, and No. two hydrophobic branch pipes of backheat along water flowing direction be sequentially installed with third regulating valve and
Drainage pump.
Preferably, described No. two low plus heater feed-water inlets are equipped with the second regulating valve, second regulating valve
Feed-water inlet also connect with condenser by water supply recirculation pipe, and the 5th regulating valve is installed on water supply recirculation pipe.
Preferably, valve of the back pressure butterfly valve for no mechanical position limitation, the fluid No leakage when valve is fully closed；The back of the body
Pressure butterfly valve has the function of to open soon；It is the valve for having mechanical position limitation that the pumping, which coagulates butterfly valve, and when valve is fully closed, fluid is still negotiable.
Preferably, the back pressure butterfly valve is provided with convinces vapour bypass by patient analysis soon, it is equipped on convincing vapour bypass by patient analysis soon and opens butterfly soon
Valve, the fast opening butterfly valve have the function of to open soon.
Preferably, the turbine low pressure cylinder is additionally provided with rear cylinder water injector, after the rear cylinder water injector passes through
The water outlet of cylinder sparge pipe and condensate pump connects, and is sequentially installed with third in rear cylinder sparge pipe upper edge dampening flow direction and cuts
Only valve and the 6th regulating valve.
A kind of adjusting method as described above for cutting off co-generation unit of the low pressure (LP) cylinder into vapour, it is characterised in that：
The adjusting method is as follows：When unit is that extraction for heat supply operating mode is run, the first shut-off valve and the second shut-off valve are closed, it is cooling to steam
Steam pipe is in off state, and cooling steam system does not put into operation；At this point, back pressure butterfly valve is full-gear, adjusts to smoke and coagulate butterfly valve
Aperture, to adjust the Steam Turbine Through IP Admission displacement into turbine low pressure cylinder；The steam turbine of turbine low pressure cylinder is not entered
Intermediate pressure cylinder steam discharge respectively enters heat exchangers for district heating and No. three low plus heaters, the steam drainage of heat exchangers for district heating be delivered to No. three it is low
Add the feed-water inlet or No. three backheat drain pipes of heater；It closes the 4th regulating valve and the 5th regulating valve, opens the first gate valve, the
Two gate valves, the second regulating valve and third regulating valve, water supply recirculation pipe are closed, the low plus steam extraction of turbine low pressure cylinder
Respectively enter that No.1 is low plus heater and No. two low plus heaters, gland packing leakage is delivered to that No.1 is low plus heating by gland packing leakage pipe
Device, No. three low plus heater steam drainages are delivered to No. two low plus heater hydrophobic imports, No. two low plus heater steamings
Vapour is hydrophobic to be delivered to that No. three low plus the feed-water inlets of heater by drainage pump, No.1 is low plus the steam drainage of heater be delivered to it is solidifying
Vapour device；Third shut-off valve is opened, the aperture of the 6th regulating valve is adjusted according to the exhaust temperature of turbine low pressure cylinder, to control
The spray flow of cylinder water injector afterwards；When the exhaust temperature T of turbine low pressure cylinder is T≤45 DEG C, the 6th regulating valve, which is in, closes
Closed state；When the exhaust temperature T of turbine low pressure cylinder is T >=80 DEG C, the 6th regulating valve is shown in a fully open operation；When steam turbine is low
When the exhaust temperature T of cylinder pressure is 80 DEG C of 45 DEG C of ＜ T ＜, the aperture f of the 6th regulating valve and the exhaust temperature T of turbine low pressure cylinder it
Between function be：f=（T-45）÷35×100%；
When unit is that back pressure supplying thermal condition is run, the first shut-off valve and the second shut-off valve are opened, cooling steam pipe is opening state
State, cooling steam system put into operation；At this point, it is full closing state, the row of Steam Turbine Through IP Admission that back pressure butterfly valve and pumping, which coagulate butterfly valve,
Vapour does not enter back into turbine low pressure cylinder acting, whole steam discharges of Steam Turbine Through IP Admission respectively enter heat exchangers for district heating and No. three it is low plus
The steam drainage of heater, heat exchangers for district heating is delivered to No. three low plus heater feed-water inlets or No. three backheat drain pipes；Together
When, the steam discharge of a small gangs of Steam Turbine Through IP Admission enters cooling steam pipe, first passes through reducing-and-cooling plant and carries out desuperheat and decompression, so
Afterwards by the moisture in steam after water separator removing desuperheat, the moisture isolated is delivered to condenser by separation water pipe,
Steam after separation is directly entered turbine low pressure cylinder, is cooled down to turbine low pressure cylinder, according to the survey of flow measurement device
Magnitude adjusts the aperture of the first regulating valve, ensures that the cooling steam flow that flow measurement device is shown meets turbine low pressure cylinder
Cooling requirement；Close the first gate valve and the second gate valve, only gland packing leakage is delivered to that No.1 is low plus heating by gland packing leakage pipe
Device, No. three low plus heater steam drainages are delivered to No. two low plus heater hydrophobic imports, close third regulating valve, open
4th regulating valve, No. two low plus heater steam drainages are delivered to the low hydrophobic import for adding heater of No.1, and No.1 is low plus adds
The steam drainage of hot device is delivered to condenser；The aperture of the second regulating valve and the 5th regulating valve is opened and adjusts, No.1 is low plus adds
The part water supply of hot device output is delivered to condenser by water supply recirculation pipe；Back pressure butterfly valve has the function of to open soon, when in steam turbine
When the steam discharge of cylinder pressure can not be discharged in time, using back pressure butterfly valve open soon function realize Steam Turbine Through IP Admission steam discharge discharge,
Prevent Steam Turbine Through IP Admission from bored cylinder occur.Third shut-off valve is opened, the 6th is adjusted according to the exhaust temperature of turbine low pressure cylinder
The aperture of regulating valve, to the spray flow of cylinder water injector after control；When the exhaust temperature T of turbine low pressure cylinder is T≤45
DEG C when, the 6th regulating valve is closed；When the exhaust temperature T of turbine low pressure cylinder is T >=80 DEG C, at the 6th regulating valve
In full-gear；When the exhaust temperature T of turbine low pressure cylinder is 80 DEG C of 45 DEG C of ＜ T ＜, the aperture f and steamer of the 6th regulating valve
Function between machine low pressure (LP) cylinder exhaust temperature T is：f=（T-45）÷35×100%.Wherein：The desuperheating water of reducing-and-cooling plant comes
Source can be demineralized water, condensed water or boiler replenishing water.
Preferably, when unit switches between extraction for heat supply operating mode and back pressure supplying thermal condition, cooling steam is first opened
Pipe, reducing-and-cooling plant first do not throw desuperheating water, gradually close and take out when coagulating butterfly valve to unit extraction for heat supply at minimum valve position；Again gradually
Back pressure butterfly valve is closed, and reducing-and-cooling plant puts into desuperheating water, the temperature and pressure of cooling steam are controlled by reducing-and-cooling plant
Power, so that the temperature of cooling steam meets the cooling requirement of turbine low pressure cylinder；When the steam discharge of Steam Turbine Through IP Admission can not
In time when discharge, it can also utilize and convince the discharge that Steam Turbine Through IP Admission steam discharge is realized in vapour bypass by patient analysis soon, prevent Steam Turbine Through IP Admission
There is bored cylinder.
Compared with prior art, the present invention has the advantages that：（1）Reasonable design of the present invention, structure letter
Single, dependable performance can be effectively advanced to cooling steam according to the pressure and temperature of cooling steam needed for turbine low pressure cylinder
Row cools down again；Cooling steam after cooling again, temperature is lower, can low pressure (LP) cylinder preferably be cooled down；（2）By changing
Become the hydrophobic connection type with heat regenerative system of heat supply network, the cascade utilization of thermal energy had both been realized, when in turn ensuring low pressure (LP) cylinder not into vapour
The condensing capacity of low pressure heat regenerative system improves the safety of low pressure (LP) cylinder heat regenerative system operation；（3）Pass through low pressure heat regenerative system
Water supply recycles, and improves the safety of low pressure (LP) cylinder heat regenerative system operation；（4）By using with the back pressure butterfly valve for opening function soon
Or vapour bypass is convinced in setting by patient analysis soon, realizes the discharge of Steam Turbine Through IP Admission steam discharge, it is therefore prevented that bored cylinder phenomenon occurs in Steam Turbine Through IP Admission.
Description of the drawings
Fig. 1 is the overall structure diagram of the embodiment of the present invention.
Fig. 2 is that the embodiment of the present invention convinces vapour bypass structure schematic diagram by patient analysis soon.
Fig. 3 is the hydrophobic connection type structural schematic diagram of heat supply network of the embodiment of the present invention.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited in following embodiments.
Referring to Fig. 1, a kind of co-generation unit for cutting off low pressure (LP) cylinder into vapour, including Steam Turbine Through IP Admission 1, steam turbine
Low pressure (LP) cylinder 2, condenser 3, condensate pump 4, gland heater 5, No.1 are low plus heater 6, two is low plus heater 7, three is low
Add heater 8, drainage pump 9, reducing-and-cooling plant 10, water separator 11, flow measurement device 12,13 and of heat exchangers for district heating
Cylinder water injector 14 afterwards；The steam drain of Steam Turbine Through IP Admission 1 is connect by communicating pipe 41 with the air intake of turbine low pressure cylinder 2,
And it moves direction along steam stream on communicating pipe 41 and is sequentially installed with back pressure butterfly valve 21 and takes out and coagulate butterfly valve 22；Back pressure butterfly valve 21 is nothing
The valve of mechanical position limitation, the fluid No leakage when valve is fully closed；Back pressure butterfly valve 21 has the function of to open soon；It is organic to take out solidifying butterfly valve 22
The valve of tool limit, when valve is fully closed, fluid is still negotiable；The steam drain of Steam Turbine Through IP Admission 1 also passes through cooling steam pipe 43
It is connect with the air intake of turbine low pressure cylinder 2, and moves direction along steam stream on cooling steam pipe 43 and be sequentially installed with first
Shut-off valve 24, reducing-and-cooling plant 10, water separator 11, flow measurement device 12, the cut-off of the first regulating valve 25 and second
Valve 26；Reducing-and-cooling plant 10 is connected with desuperheat water pipe 44；The separation water out of water separator 11 is by detaching water pipe 45
It is connect with condenser 3；The steam drain of turbine low pressure cylinder 2 is connect with condenser 3；Condenser 3 is connect with boiler feed pipe 52,
52 upper edge dampening flow direction of boiler feed pipe is sequentially installed with that condensate pump 4, gland heater 5, No.1 be low plus heater 6,
No. two low plus heaters 7 and No. three low plus heaters 8；The low air intake for adding heater 6 of No.1 adds extraction steam pipe 47 by the way that No.1 is low
Connect with the No.1 extraction opening of turbine low pressure cylinder 2, No.1 is low plus extraction steam pipe 47 on the second gate valve 28, the second gate valve are installed
28 steam (vapor) outlet is also associated with gland packing leakage pipe 48；No. two low plus heater 7 air intakes pass through No. two low plus extraction steam pipes 46
Connect with No. two extraction openings of turbine low pressure cylinder 2, and No. two low plus extraction steam pipe 46 on the first gate valve 27 is installed；No. three low
Add the air intake of heater 8 low plus extraction steam pipe 49 is connect with the steam drain of Steam Turbine Through IP Admission 1 by No. three；Heat exchangers for district heating 13
Air intake connect with the steam drain of Steam Turbine Through IP Admission 1 by heating extraction steam pipe 50, the hydrophobic outlet of heat exchangers for district heating 13 is logical
The feed-water inlet for adding heater 8 low with No. three of heating drain pipe 51 is crossed to connect；No. three low plus heater 8 hydrophobic outlets pass through three
Number backheat drain pipe 53 is low with No. two plus the hydrophobic import of heater 7 is connect；No. two low plus heater 7 hydrophobic outlets pass through two
Number backheat drain pipe 55 is low with No.1 plus the hydrophobic import of heater 6 is connect, and is equipped on No. two backheat drain pipes 55 the
Four regulating valves 31；No. two low plus heater 7 hydrophobic outlets also add heater 7 by the way that the hydrophobic branch pipe 54 of No. two backheats and No. two are low
Feedwater outlet connection, and the hydrophobic branch pipe 54 of No. two backheats along water flowing direction be sequentially installed with third regulating valve 30 and dredge
Water pump 9；The low hydrophobic outlet for adding heater 6 of No.1 is connect by No.1 backheat drain pipe 56 with condenser 3；No. two low plus heating
The feed-water inlet of device 7 is equipped with the second regulating valve 29, and the feed-water inlet of the second regulating valve 29 by water supply recirculation pipe 57 and coagulates
Vapour device 3 connects, and the 5th regulating valve 32 is equipped on water supply recirculation pipe 57；Turbine low pressure cylinder 2 is additionally provided with rear cylinder spray
Water installations 14, rear cylinder water injector 14 are connect by rear cylinder sparge pipe 58 with the water outlet of condensate pump 4, and in rear cylinder sparge pipe
58 upper edge dampening flow directions are sequentially installed with third shut-off valve 33 and the 6th regulating valve 34.
Referring to Fig. 2, back pressure butterfly valve 21 is provided with convinces vapour bypass 42 by patient analysis soon, is equipped on convincing vapour bypass 42 by patient analysis soon and opens butterfly soon
Valve 23；Fast opening butterfly valve 23 has the function of to open soon.
Referring to Fig. 3, the hydrophobic outlet of heat exchangers for district heating 13 also adds the three of heater 8 by the way that heating drain pipe 51 and No. three are low
Number backheat drain pipe 53 connects.
A kind of adjusting method as described above for cutting off co-generation unit of the low pressure (LP) cylinder into vapour, adjusting method is such as
Under：
When unit is that extraction for heat supply operating mode is run, closes the first shut-off valve 24 and the second shut-off valve 26, cooling steam pipe 43 are
Closed state, cooling steam system do not put into operation；
At this point, back pressure butterfly valve 21 is full-gear, the aperture taken out and coagulate butterfly valve 22 is adjusted, to adjust into turbine low pressure cylinder 2
1 displacement of Steam Turbine Through IP Admission；1 steam discharge of Steam Turbine Through IP Admission for not entering turbine low pressure cylinder 2 respectively enters heat supply network heating
Device 13 and No. three low plus heaters 8, the steam drainage of heat exchangers for district heating 13 be delivered to No. three low plus heater 8 feed-water inlets or
No. three backheat drain pipes 53；
It closes the 4th regulating valve 31 and the 5th regulating valve 32, opens the first gate valve 27, the second gate valve 28, the second regulating valve 29 and the
Three regulating valves 30, water supply recirculation pipe 57 are closed, turbine low pressure cylinder 2 low plus steam extraction respectively enter No.1 it is low plus
Heater 6 and No. two low plus heaters 7, gland packing leakage are delivered to that No.1 is low plus heater 6 by gland packing leakage pipe 48, No. three it is low plus
The steam drainage of heater 8 is delivered to that No. two low plus the hydrophobic imports of heater 7, No. two low plus heater 7 steam drainages by
Drainage pump 9 is delivered to No. three low plus heater 8 feed-water inlets, and the low steam drainage for adding heater 6 of No.1 is delivered to condenser
3；
Third shut-off valve 33 is opened, the aperture of the 6th regulating valve 34 is adjusted according to the exhaust temperature of turbine low pressure cylinder 2, to
The spray flow of cylinder water injector 14 after control；When the exhaust temperature T of turbine low pressure cylinder 2 is T≤45 DEG C, the 6th regulating valve
34 are closed；When the exhaust temperature T of turbine low pressure cylinder 2 is T >=80 DEG C, the 6th regulating valve 34 is in standard-sized sheet shape
State；When the exhaust temperature T of turbine low pressure cylinder 2 is 80 DEG C of 45 DEG C of ＜ T ＜, the aperture f of the 6th regulating valve 34 is low with steam turbine
Function between the exhaust temperature T of cylinder pressure 2 is：f=（T-45）÷35×100%.
When unit is that back pressure supplying thermal condition is run, the first shut-off valve 24 and the second shut-off valve 26, cooling steam pipe are opened
For open state, cooling steam system puts into operation；
At this point, it is full closing state that back pressure butterfly valve 21 and pumping, which coagulate butterfly valve 22, the steam discharge of Steam Turbine Through IP Admission 1 does not enter back into steam turbine
Low pressure (LP) cylinder 2 does work, and whole steam discharges of Steam Turbine Through IP Admission 1 respectively enter heat exchangers for district heating 13 and No. three low plus heaters 8, heat supply network
The steam drainage of heater 13 is delivered to No. three low plus heater 8 feed-water inlets or No. three backheat drain pipes 53；
Meanwhile the steam discharge of a small gangs of Steam Turbine Through IP Admission 1 enters cooling steam pipe 43, first passes through reducing-and-cooling plant 10 and is subtracted
Mild decompression, the desuperheating water source of reducing-and-cooling plant 10 can be demineralized water, condensed water or boiler replenishing water, then pass through carbonated drink
Moisture after the removing desuperheat of separator 11 in steam, the moisture isolated is delivered to condenser 3 by separation water pipe 45, after separation
Steam be directly entered turbine low pressure cylinder 2, turbine low pressure cylinder 2 is cooled down, according to the measurement of flow measurement device 12
Value adjusts the aperture of the first regulating valve 25, ensures that the cooling steam flow that flow measurement device 12 is shown meets steam turbine low-pressure
The cooling requirement of cylinder 2；
Close the first gate valve 27 and the second gate valve 28, only gland packing leakage is delivered to that No.1 is low plus heater by gland packing leakage pipe 48
6, No. three low plus heater 8 steam drainages are delivered to No. two low plus heater 7 hydrophobic imports, close third regulating valve 30,
Open the 4th regulating valve 31, No. two low plus heater 7 steam drainages are delivered to that No.1 is low plus the hydrophobic import of heater 6, and one
Number low plus heater 6 steam drainage is delivered to condenser 3；Open and adjust the second regulating valve 29, the 5th regulating valve 32 is opened
Degree, the low part water supply for adding heater 6 to export of No.1 are delivered to condenser 3 by water supply recirculation pipe 57；
Back pressure butterfly valve 21 has the function of to open soon, when the steam discharge of Steam Turbine Through IP Admission 1 can not be discharged in time, using back pressure butterfly valve
21 discharge opened function soon and realize 1 steam discharge of Steam Turbine Through IP Admission, prevents Steam Turbine Through IP Admission 1 from bored cylinder occur；
Third shut-off valve 33 is opened, the aperture of the 6th regulating valve 34 is adjusted according to the exhaust temperature of turbine low pressure cylinder 2, to
The spray flow of cylinder water injector 14 after control；When the exhaust temperature T of turbine low pressure cylinder 2 is T≤45 DEG C, the 6th regulating valve
34 are closed；When the exhaust temperature T of turbine low pressure cylinder 2 is T >=80 DEG C, the 6th regulating valve 34 is in standard-sized sheet shape
State；When the exhaust temperature T of turbine low pressure cylinder 2 is 80 DEG C of 45 DEG C of ＜ T ＜, the aperture f of the 6th regulating valve 34 is low with steam turbine
Function between 2 exhaust temperature T of cylinder pressure is：f=（T-45）÷35×100%.
In the present embodiment, when carrying out adjusting between different operating modes, especially unit is supplied in extraction for heat supply operating mode and back pressure
When switching between thermal condition, cooling steam pipe 43 is first opened, reducing-and-cooling plant 10 does not first throw desuperheating water, gradually closes to take out and coagulates butterfly
When valve 22 to unit extraction for heat supply at minimum valve position；Back pressure butterfly valve 21 is gradually closed again, and reducing-and-cooling plant 10 puts into desuperheat
Water controls the temperature and pressure of cooling steam by reducing-and-cooling plant 10, so that the temperature of cooling steam meets steamer
The cooling requirement of machine low pressure (LP) cylinder 2.
In addition, when the steam discharge of Steam Turbine Through IP Admission 1 can not be discharged in time, it can also utilize and convince 42 realization of vapour bypass by patient analysis soon
The discharge of 1 steam discharge of Steam Turbine Through IP Admission, prevents Steam Turbine Through IP Admission 1 from bored cylinder occur.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Claiming etc. can be different, described in this specification above content is only to structure of the invention example explanation.It is all according to
The equivalence changes or simple change done according to the structure, feature and principle of inventional idea of the present invention are included in of the invention special
In the protection domain of profit.Those skilled in the art can do described specific embodiment various
Modify or supplement or adopt similar mode substitute, without departing from the present invention structure or surmount the claims institute
The range of definition, is within the scope of protection of the invention.
Claims (10)
1. a kind of co-generation unit for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：Including Steam Turbine Through IP Admission（1）, vapour
Turbine low pressure (LP) cylinder（2）, condenser（3）, condensate pump（4）, gland heater（5）, No.1 is low plus heater（6）, No. two it is low plus
Heater（7）, No. three low plus heaters（8）, drainage pump（9）, reducing-and-cooling plant（10）, water separator（11）, flow
Measuring device（12）, heat exchangers for district heating（13）With rear cylinder water injector（14）；The Steam Turbine Through IP Admission（1）Steam drain pass through
Communicating pipe（41）With turbine low pressure cylinder（2）Air intake connection, and in communicating pipe（41）On along steam stream move direction successively
Back pressure butterfly valve is installed（21）Butterfly valve is coagulated with taking out（22）；The Steam Turbine Through IP Admission（1）Steam drain also pass through cooling steam pipe
（43）With turbine low pressure cylinder（2）Air intake connection, and in cooling steam pipe（43）On move direction along steam stream and pacify successively
Equipped with the first shut-off valve（24）, reducing-and-cooling plant（10）, water separator（11）, flow measurement device（12）, first adjust
Save valve（25）With the second shut-off valve（26）；The reducing-and-cooling plant（10）It is connected with desuperheat water pipe（44）；The steam-water separation
Device（11）Separation water out pass through detach water pipe（45）With condenser（3）Connection；The turbine low pressure cylinder（2）Steam discharge
Mouth and condenser（3）Connection；The condenser（3）With boiler feed pipe（52）Connection, in boiler feed pipe（52）Upper edge dampening
Flow direction is sequentially installed with condensate pump（4）, gland heater（5）, No.1 is low plus heater（6）, No. two low plus heaters
（7）Plus heater low with No. three（8）；The No.1 is low to add heater（6）Air intake by the way that No.1 is low plus extraction steam pipe（47）With
Turbine low pressure cylinder（2）The connection of No.1 extraction opening, No.1 is low plus extraction steam pipe（47）On the second gate valve is installed（28）, described
Second gate valve（28）Steam (vapor) outlet be also associated with gland packing leakage pipe（48）；Described No. two low plus heaters（7）Air intake it is logical
Cross No. two low plus extraction steam pipes（46）With turbine low pressure cylinder（2）The connection of No. two extraction openings, and No. two low plus extraction steam pipes（46）
On the first gate valve is installed（27）；Described No. three low plus heaters（8）Air intake pass through that No. three low plus extraction steam pipes（49）With vapour
Turbine intermediate pressure cylinder（1）Steam drain connection；The heat exchangers for district heating（13）Air intake pass through heating extraction steam pipe（50）With steamer
Machine intermediate pressure cylinder（1）Steam drain connection；Described No. three low plus heaters（8）Hydrophobic outlet pass through No. three backheat drain pipes（53）
Plus heater low with No. two（7）Hydrophobic import connection；Described No. two low plus heaters（7）Hydrophobic outlet pass through No. two backheats
Drain pipe（55）Plus heater low with No.1（6）Hydrophobic import connection, and in No. two backheat drain pipes（55）On be equipped with
Four regulating valves（31）；The No.1 is low to add heater（6）Hydrophobic outlet pass through No.1 backheat drain pipe（56）With condenser（3）
Connection.
2. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：The heat supply network
Heater（13）Hydrophobic outlet pass through heating drain pipe（51）Plus heater low with No. three（8）Feed-water inlet connection.
3. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：The heat supply network
Heater（13）Hydrophobic outlet also pass through heating drain pipe（51）Plus heater low with No. three（8）No. three backheat drain pipes
（53）Connection.
4. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：Described No. two
Low plus heater（7）Hydrophobic outlet also pass through No. two hydrophobic branch pipes of backheat（54）Plus heater low with No. two（7）Water supply go out
Mouth connection, and in No. two hydrophobic branch pipes of backheat（54）It is sequentially installed with third regulating valve along water flowing direction（30）And drainage pump
（9）.
5. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：Described No. two
Low plus heater（7）Feed-water inlet the second regulating valve is installed（29）, second regulating valve（29）Feed-water inlet it is also logical
Cross water supply recirculation pipe（57）With condenser（3）Connection, and in water supply recirculation pipe（57）On the 5th regulating valve is installed（32）.
6. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：The back pressure
Butterfly valve（21）For the valve of no mechanical position limitation, the fluid No leakage when valve is fully closed；The back pressure butterfly valve（21）With opening work(soon
Energy；Described take out coagulates butterfly valve（22）To there is the valve of mechanical position limitation, when valve is fully closed, fluid is still negotiable.
7. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：The back pressure
Butterfly valve（21）It is provided with and convinces vapour bypass by patient analysis soon（42）, convincing vapour bypass by patient analysis soon（42）On fast opening butterfly valve is installed（23）, described fast
Opening butterfly valve（23）Have the function of to open soon.
8. the co-generation unit according to claim 1 for cutting off low pressure (LP) cylinder into vapour, it is characterised in that：The steamer
Machine low pressure (LP) cylinder（2）It is additionally provided with rear cylinder water injector（14）, the rear cylinder water injector（14）Pass through rear cylinder sparge pipe（58）With
Condensate pump（4）Water outlet connection, and in rear cylinder sparge pipe（58）Upper edge dampening flow direction is sequentially installed with third cut-off
Valve（33）With the 6th regulating valve（34）.
9. it is a kind of as described in any one of claim 1-8 claims for cutting off low pressure (LP) cylinder into the co-generation unit of vapour
Adjusting method, it is characterised in that：The adjusting method is as follows：
When unit is that extraction for heat supply operating mode is run, the first shut-off valve is closed（24）With the second shut-off valve（26）, cooling steam pipe
（43）It is in off state, cooling steam system does not put into operation；At this point, back pressure butterfly valve（21）For full-gear, adjusts to take out and coagulate butterfly
Valve（22）Aperture, to adjust into turbine low pressure cylinder（2）Steam Turbine Through IP Admission（1）Displacement；Steam turbine is not entered
Low pressure (LP) cylinder（2）Steam Turbine Through IP Admission（1）Steam discharge respectively enters heat exchangers for district heating（13）Plus heater low with No. three（8）, heat supply network
Heater（13）Steam drainage be delivered to that No. three low plus heaters（8）Feed-water inlet or No. three backheat drain pipes（53）；It closes
Close the 4th regulating valve（31）With the 5th regulating valve（32）, open the first gate valve（27）, the second gate valve（28）, the second regulating valve（29）
With third regulating valve（30）, water supply recirculation pipe（57）It is closed, turbine low pressure cylinder（2）Low plus steam extraction respectively into
Enter that No.1 is low plus heater（6）Plus heater low with No. two（7）, gland packing leakage is by gland packing leakage pipe（48）Be delivered to No.1 it is low plus
Heater（6）, No. three low plus heaters（8）Steam drainage be delivered to that No. two low plus heaters（7）Hydrophobic import, No. two are low
Add heater（7）Steam drainage by drainage pump（9）It is delivered to No. three low plus heaters（8）Feed-water inlet, No.1 it is low plus plus
Hot device（6）Steam drainage be delivered to condenser（3）；Open third shut-off valve（33）, according to turbine low pressure cylinder（2）Steam discharge
Temperature adjusts the 6th regulating valve（34）Aperture, to control after cylinder water injector（14）Spray flow；When steam turbine is low
Cylinder pressure（2）Exhaust temperature T be T≤45 DEG C when, the 6th regulating valve（34）It is closed；Work as turbine low pressure cylinder（2）'s
When exhaust temperature T is T >=80 DEG C, the 6th regulating valve（34）It is shown in a fully open operation；Work as turbine low pressure cylinder（2）Exhaust temperature T
For 80 DEG C of 45 DEG C of ＜ T ＜ when, the 6th regulating valve（34）Aperture f and turbine low pressure cylinder（2）Exhaust temperature T between function
For：f=（T-45）÷35×100%；
When unit is that back pressure supplying thermal condition is run, the first shut-off valve is opened（24）With the second shut-off valve（26）, cooling steam pipe
For open state, cooling steam system puts into operation；At this point, back pressure butterfly valve（21）Butterfly valve is coagulated with taking out（22）For full closing state,
Steam Turbine Through IP Admission（1）Steam discharge do not enter back into turbine low pressure cylinder（2）Acting, Steam Turbine Through IP Admission（1）Whole steam discharges point
It Jin Ru not heat exchangers for district heating（13）Plus heater low with No. three（8）, heat exchangers for district heating（13）Steam drainage be delivered to No. three it is low
Add heater（8）Feed-water inlet or No. three backheat drain pipes（53）；Meanwhile a small gangs of Steam Turbine Through IP Admission（1）Steam discharge into
Enter cooling steam pipe（43）, first pass through reducing-and-cooling plant（10）Carry out desuperheat and decompression, reducing-and-cooling plant（10）Desuperheat
Water source can be demineralized water, condensed water or boiler replenishing water, then pass through water separator（11）After removing desuperheat in steam
Moisture, the moisture isolated is by separation water pipe（45）It is delivered to condenser（3）, it is low that the steam after separation is directly entered steam turbine
Cylinder pressure（2）, to turbine low pressure cylinder（2）It is cooled down, according to flow measurement device（12）Measured value adjust the first adjusting
Valve（25）Aperture, ensure flow measurement device（12）The cooling steam flow of display meets turbine low pressure cylinder（2）Cooling
Demand；Close the first gate valve（27）With the second gate valve（28）, gland packing leakage is by gland packing leakage pipe（48）Be delivered to No.1 it is low plus plus
Hot device（6）, No. three low plus heaters（8）Steam drainage be delivered to that No. two low plus heaters（7）Hydrophobic import, close third
Regulating valve（30）, open the 4th regulating valve（31）, No. two low plus heaters（7）Steam drainage be delivered to that No.1 is low plus heater
（6）Hydrophobic import, No.1 is low plus heater（6）Steam drainage be delivered to condenser（3）；It opens and adjusts the second regulating valve
（29）With the 5th regulating valve（32）Aperture, No.1 is low plus heater（6）The part water supply of output is by water supply recirculation pipe（57）
It is delivered to condenser（3）；Back pressure butterfly valve（21）Have the function of to open soon, works as Steam Turbine Through IP Admission（1）Steam discharge can not be discharged in time
When, utilize back pressure butterfly valve（21）Open soon function realize Steam Turbine Through IP Admission（1）The discharge of steam discharge, prevents Steam Turbine Through IP Admission
（1）There is bored cylinder；Open third shut-off valve（33）, according to turbine low pressure cylinder（2）Exhaust temperature adjust the 6th regulating valve
（34）Aperture, to control after cylinder water injector（14）Spray flow；Work as turbine low pressure cylinder（2）Exhaust temperature T be T
At≤45 DEG C, the 6th regulating valve（34）It is closed；Work as turbine low pressure cylinder（2）Exhaust temperature T be T >=80 DEG C when,
6th regulating valve（34）It is shown in a fully open operation；Work as turbine low pressure cylinder（2）Exhaust temperature when to be T be 80 DEG C of 45 DEG C of ＜ T ＜,
Six regulating valves（34）Aperture f and turbine low pressure cylinder（2）Function between exhaust temperature T is：f=（T-45）÷35×100%.
10. the adjusting method according to claim 9 for cutting off co-generation unit of the low pressure (LP) cylinder into vapour, feature exists
In：When unit switches between extraction for heat supply operating mode and back pressure supplying thermal condition, cooling steam pipe is first opened（43）, pressure and temperature reducing dress
It sets（10）Desuperheating water is not first thrown, gradually closes to take out and coagulates butterfly valve（22）To minimum valve position when unit extraction for heat supply；It gradually closes again
Back pressure butterfly valve（21）, and reducing-and-cooling plant（10）Desuperheating water is put into, reducing-and-cooling plant is passed through（10）Control cooling steam
Temperature and pressure, so that the temperature of cooling steam meets turbine low pressure cylinder（2）Cooling requirement；Work as Steam Turbine Through IP Admission
（1）Steam discharge when can not be discharged in time, bypassed using vapour is convinced by patient analysis soon（42）Realize Steam Turbine Through IP Admission（1）The discharge of steam discharge is prevented
Only Steam Turbine Through IP Admission（1）There is bored cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171002.5A CN108506057B (en) | 2018-03-01 | 2018-03-01 | Cogeneration system for cutting off steam inlet of low-pressure cylinder and adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171002.5A CN108506057B (en) | 2018-03-01 | 2018-03-01 | Cogeneration system for cutting off steam inlet of low-pressure cylinder and adjusting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506057A true CN108506057A (en) | 2018-09-07 |
| CN108506057B CN108506057B (en) | 2023-07-14 |
Family
ID=63376962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810171002.5A Active CN108506057B (en) | 2018-03-01 | 2018-03-01 | Cogeneration system for cutting off steam inlet of low-pressure cylinder and adjusting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506057B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441570A (en) * | 2018-11-05 | 2019-03-08 | 华电电力科学研究院有限公司 | One kind is coagulated in combination for two units takes out back heating system and operation method |
| CN109611166A (en) * | 2018-11-20 | 2019-04-12 | 华电电力科学研究院有限公司 | A kind of solidifying pumping back heating system and operation method for more low pressure (LP) cylinder Variable Conditions of Steam Turbine |
| CN109854315A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction |
| CN109869199A (en) * | 2019-01-31 | 2019-06-11 | 山西河坡发电有限责任公司 | A kind of steam turbine structure and low pressure (LP) cylinder cut cylinder control method |
| CN110230521A (en) * | 2019-03-12 | 2019-09-13 | 华电电力科学研究院有限公司 | A kind of thermoelectricity unit cuts off low pressure (LP) cylinder into vapour coupling heat pump step heating system and adjusting method |
| CN110295957A (en) * | 2019-07-09 | 2019-10-01 | 北京龙威发电技术有限公司 | A kind of feed pump turbine system |
| CN110332026A (en) * | 2019-06-20 | 2019-10-15 | 华电电力科学研究院有限公司 | A kind of solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling |
| CN110388239A (en) * | 2019-07-23 | 2019-10-29 | 岭澳核电有限公司 | Nuclear power station separator system |
| CN110566296A (en) * | 2019-08-26 | 2019-12-13 | 国网天津市电力公司电力科学研究院 | Low-pressure cylinder zero-output thermoelectric decoupling system and operation method |
| CN111677569A (en) * | 2020-05-30 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Cooling system for low-pressure cylinder after steam inlet of low-pressure cylinder of steam turbine is cut completely |
| CN111720183A (en) * | 2020-05-15 | 2020-09-29 | 华电电力科学研究院有限公司 | Optimized scheduling method for parallel heat supply operation of extraction condensing unit and high back pressure heat supply unit |
| CN111779964A (en) * | 2020-05-18 | 2020-10-16 | 华电电力科学研究院有限公司 | Subcritical unit improved heat supply network drainage system and working method thereof |
| CN112856379A (en) * | 2021-03-26 | 2021-05-28 | 浙江浙能技术研究院有限公司 | High-pressure steam extraction heat regeneration system for preventing third-number high pressure leakage |
| CN113404556A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Steam turbine low pressure bearing seal cooling system |
| CN113404563A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
| CN114483235A (en) * | 2021-12-28 | 2022-05-13 | 杭州华电能源工程有限公司 | Heating system for switching pumping condensation into low-pressure cylinder with zero output and working method thereof |
| CN114635766A (en) * | 2022-01-06 | 2022-06-17 | 国核电力规划设计研究院有限公司 | Valve setting and control system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114704340A (en) * | 2022-05-06 | 2022-07-05 | 中国船舶重工集团公司第七0三研究所 | Double-low-pressure-cylinder zero-output steam turbine set regenerative system and operation method |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220193A (en) * | 1961-01-06 | 1965-11-30 | Gilbert Associates | Devices for improving operating flexibility of steam-electric generating plants |
| US4561255A (en) * | 1983-06-24 | 1985-12-31 | Westinghouse Electric Corp. | Power plant feedwater system |
| US5377489A (en) * | 1991-05-09 | 1995-01-03 | Westinghouse Electric Corporation | Internal moisture separation cycle for a low pressure turbine |
| US5490386A (en) * | 1991-09-06 | 1996-02-13 | Siemens Aktiengesellschaft | Method for cooling a low pressure steam turbine operating in the ventilation mode |
| US20030037534A1 (en) * | 2000-08-08 | 2003-02-27 | Hideaki Sugishita | Steam cooled gas turbine system with regenerative heat exchange |
| WO2006121335A1 (en) * | 2005-05-13 | 2006-11-16 | Kanfa-Tec As | A method and a system for generating steam |
| US20100083661A1 (en) * | 2008-10-03 | 2010-04-08 | General Electric Company | Apparatus for steam attemperation using fuel gas heater water discharge to reduce feedwater pump size |
| US20120312019A1 (en) * | 2010-02-01 | 2012-12-13 | Nooter/Eriksen, Inc. | Process and apparatus for heating feedwater in a heat recovery steam generator |
| CN203476412U (en) * | 2013-09-14 | 2014-03-12 | 内蒙古电力勘测设计院 | Novel efficient heating supply system based on NCB unit |
| CN105863759A (en) * | 2016-04-19 | 2016-08-17 | 刘子旺 | Dead steam cooling and recycling system for steam-driven water feed pump in high-back-pressure modification system of wet-cold thermal power unit |
| CN106640237A (en) * | 2016-08-29 | 2017-05-10 | 华电电力科学研究院 | System for improving thermal power straight condensing unit flexibility and running method of system |
| CN107023337A (en) * | 2017-03-28 | 2017-08-08 | 华电电力科学研究院 | Steam turbine extraction condensing back pressure system and its adjusting method |
| CN107062351A (en) * | 2017-05-08 | 2017-08-18 | 华电电力科学研究院 | A kind of heat supply network progressive solution system and its adjusting method using small steam turbine |
| CN107101248A (en) * | 2017-05-08 | 2017-08-29 | 华电电力科学研究院 | Steam turbine heat supply hot net water progressive solution and step heating system and operation method |
| CN107191233A (en) * | 2017-05-08 | 2017-09-22 | 华电电力科学研究院 | A kind of coal fired power generation peak regulation system and its operation method for low-load combustion-stabilizing |
| CN107420139A (en) * | 2017-07-26 | 2017-12-01 | 华电电力科学研究院 | A kind of low pressure (LP) cylinder cooling steam device and operation method |
| CN206801628U (en) * | 2017-05-10 | 2017-12-26 | 程琛 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
| CN107524478A (en) * | 2017-07-18 | 2017-12-29 | 华电电力科学研究院 | For the low pressure (LP) cylinder cooling device of extraction condensing back pressure system and its application |
| CN107542506A (en) * | 2017-08-23 | 2018-01-05 | 华电电力科学研究院 | Steam turbine extraction condensing back pressure gradient utilization system and its application |
| CN107605553A (en) * | 2017-09-12 | 2018-01-19 | 华电电力科学研究院 | Energy conserving system and its intelligent control method for steam power plant's multi-heat source industrial heating |
| CN208138012U (en) * | 2018-03-01 | 2018-11-23 | 华电电力科学研究院有限公司 | A kind of co-generation unit for cutting off low pressure (LP) cylinder into vapour |
-
2018
- 2018-03-01 CN CN201810171002.5A patent/CN108506057B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220193A (en) * | 1961-01-06 | 1965-11-30 | Gilbert Associates | Devices for improving operating flexibility of steam-electric generating plants |
| US4561255A (en) * | 1983-06-24 | 1985-12-31 | Westinghouse Electric Corp. | Power plant feedwater system |
| US5377489A (en) * | 1991-05-09 | 1995-01-03 | Westinghouse Electric Corporation | Internal moisture separation cycle for a low pressure turbine |
| US5490386A (en) * | 1991-09-06 | 1996-02-13 | Siemens Aktiengesellschaft | Method for cooling a low pressure steam turbine operating in the ventilation mode |
| US20030037534A1 (en) * | 2000-08-08 | 2003-02-27 | Hideaki Sugishita | Steam cooled gas turbine system with regenerative heat exchange |
| WO2006121335A1 (en) * | 2005-05-13 | 2006-11-16 | Kanfa-Tec As | A method and a system for generating steam |
| US20100083661A1 (en) * | 2008-10-03 | 2010-04-08 | General Electric Company | Apparatus for steam attemperation using fuel gas heater water discharge to reduce feedwater pump size |
| US20120312019A1 (en) * | 2010-02-01 | 2012-12-13 | Nooter/Eriksen, Inc. | Process and apparatus for heating feedwater in a heat recovery steam generator |
| CN203476412U (en) * | 2013-09-14 | 2014-03-12 | 内蒙古电力勘测设计院 | Novel efficient heating supply system based on NCB unit |
| CN105863759A (en) * | 2016-04-19 | 2016-08-17 | 刘子旺 | Dead steam cooling and recycling system for steam-driven water feed pump in high-back-pressure modification system of wet-cold thermal power unit |
| CN106640237A (en) * | 2016-08-29 | 2017-05-10 | 华电电力科学研究院 | System for improving thermal power straight condensing unit flexibility and running method of system |
| CN107023337A (en) * | 2017-03-28 | 2017-08-08 | 华电电力科学研究院 | Steam turbine extraction condensing back pressure system and its adjusting method |
| CN107062351A (en) * | 2017-05-08 | 2017-08-18 | 华电电力科学研究院 | A kind of heat supply network progressive solution system and its adjusting method using small steam turbine |
| CN107101248A (en) * | 2017-05-08 | 2017-08-29 | 华电电力科学研究院 | Steam turbine heat supply hot net water progressive solution and step heating system and operation method |
| CN107191233A (en) * | 2017-05-08 | 2017-09-22 | 华电电力科学研究院 | A kind of coal fired power generation peak regulation system and its operation method for low-load combustion-stabilizing |
| CN206801628U (en) * | 2017-05-10 | 2017-12-26 | 程琛 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
| CN107524478A (en) * | 2017-07-18 | 2017-12-29 | 华电电力科学研究院 | For the low pressure (LP) cylinder cooling device of extraction condensing back pressure system and its application |
| CN107420139A (en) * | 2017-07-26 | 2017-12-01 | 华电电力科学研究院 | A kind of low pressure (LP) cylinder cooling steam device and operation method |
| CN107542506A (en) * | 2017-08-23 | 2018-01-05 | 华电电力科学研究院 | Steam turbine extraction condensing back pressure gradient utilization system and its application |
| CN107605553A (en) * | 2017-09-12 | 2018-01-19 | 华电电力科学研究院 | Energy conserving system and its intelligent control method for steam power plant's multi-heat source industrial heating |
| CN208138012U (en) * | 2018-03-01 | 2018-11-23 | 华电电力科学研究院有限公司 | A kind of co-generation unit for cutting off low pressure (LP) cylinder into vapour |
Non-Patent Citations (2)
| Title |
|---|
| 梅玉占;张其显;张彦;: "军粮城发电厂200MW机组连通管抽汽供热改造的可行性研究", no. 09 * |
| 陈慧丽;刘鑫;杨杰;董晓鹏;王崴;: "燃气―蒸汽联合循环供热机组抽凝与背压运行方式切换过程分析与优化", no. 2 * |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441570B (en) * | 2018-11-05 | 2023-09-05 | 华电电力科学研究院有限公司 | Condensation back-pumping heat supply system for combination of two units and operation method |
| CN109441570A (en) * | 2018-11-05 | 2019-03-08 | 华电电力科学研究院有限公司 | One kind is coagulated in combination for two units takes out back heating system and operation method |
| CN109611166A (en) * | 2018-11-20 | 2019-04-12 | 华电电力科学研究院有限公司 | A kind of solidifying pumping back heating system and operation method for more low pressure (LP) cylinder Variable Conditions of Steam Turbine |
| CN109611166B (en) * | 2018-11-20 | 2023-09-05 | 华电电力科学研究院有限公司 | Condensing back-pumping heat supply system for variable working conditions of multi-low pressure cylinder steam turbine and operation method |
| CN109869199A (en) * | 2019-01-31 | 2019-06-11 | 山西河坡发电有限责任公司 | A kind of steam turbine structure and low pressure (LP) cylinder cut cylinder control method |
| CN109854315A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction |
| CN109854315B (en) * | 2019-02-02 | 2023-09-08 | 华电电力科学研究院有限公司 | Heating system for gas-steam combined cycle unit steam extraction integration and operation method thereof |
| CN110230521A (en) * | 2019-03-12 | 2019-09-13 | 华电电力科学研究院有限公司 | A kind of thermoelectricity unit cuts off low pressure (LP) cylinder into vapour coupling heat pump step heating system and adjusting method |
| CN110230521B (en) * | 2019-03-12 | 2023-09-19 | 华电电力科学研究院有限公司 | Cascade heating system for heat pump by cutting off steam inlet coupling of low-pressure cylinder of thermoelectric unit and adjusting method |
| CN110332026A (en) * | 2019-06-20 | 2019-10-15 | 华电电力科学研究院有限公司 | A kind of solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling |
| CN110332026B (en) * | 2019-06-20 | 2024-03-08 | 华电电力科学研究院有限公司 | Steam extraction power generation heat supply system for coupling condensation back extraction heat supply and operation method |
| CN110295957A (en) * | 2019-07-09 | 2019-10-01 | 北京龙威发电技术有限公司 | A kind of feed pump turbine system |
| CN110388239A (en) * | 2019-07-23 | 2019-10-29 | 岭澳核电有限公司 | Nuclear power station separator system |
| CN110388239B (en) * | 2019-07-23 | 2022-01-04 | 岭澳核电有限公司 | Nuclear power station moisture separator reheater system |
| CN110566296A (en) * | 2019-08-26 | 2019-12-13 | 国网天津市电力公司电力科学研究院 | Low-pressure cylinder zero-output thermoelectric decoupling system and operation method |
| CN111720183A (en) * | 2020-05-15 | 2020-09-29 | 华电电力科学研究院有限公司 | Optimized scheduling method for parallel heat supply operation of extraction condensing unit and high back pressure heat supply unit |
| CN111779964B (en) * | 2020-05-18 | 2023-03-21 | 华电电力科学研究院有限公司 | Subcritical unit improved heat supply network drainage system and working method thereof |
| CN111779964A (en) * | 2020-05-18 | 2020-10-16 | 华电电力科学研究院有限公司 | Subcritical unit improved heat supply network drainage system and working method thereof |
| CN111677569A (en) * | 2020-05-30 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Cooling system for low-pressure cylinder after steam inlet of low-pressure cylinder of steam turbine is cut completely |
| CN112856379B (en) * | 2021-03-26 | 2024-06-25 | 浙江浙能技术研究院有限公司 | High-pressure steam extraction and heat regeneration system capable of preventing third high pressure and leakage |
| CN112856379A (en) * | 2021-03-26 | 2021-05-28 | 浙江浙能技术研究院有限公司 | High-pressure steam extraction heat regeneration system for preventing third-number high pressure leakage |
| CN113404563A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system |
| CN113404556A (en) * | 2021-06-18 | 2021-09-17 | 东方电气集团东方汽轮机有限公司 | Steam turbine low pressure bearing seal cooling system |
| CN114483235A (en) * | 2021-12-28 | 2022-05-13 | 杭州华电能源工程有限公司 | Heating system for switching pumping condensation into low-pressure cylinder with zero output and working method thereof |
| CN114483235B (en) * | 2021-12-28 | 2023-09-15 | 杭州华电能源工程有限公司 | Heat supply system switched from extraction and condensation to zero output of low-pressure cylinder and working method thereof |
| CN114635766A (en) * | 2022-01-06 | 2022-06-17 | 国核电力规划设计研究院有限公司 | Valve setting and control system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114635766B (en) * | 2022-01-06 | 2024-02-09 | 国核电力规划设计研究院有限公司 | Valve setting and controlling system and method for heat supply steam extraction pipeline of pressurized water reactor nuclear power unit |
| CN114704340B (en) * | 2022-05-06 | 2023-12-08 | 中国船舶重工集团公司第七0三研究所 | Double-low-pressure cylinder zero-output steam turbine unit regenerative system and operation method |
| CN114704340A (en) * | 2022-05-06 | 2022-07-05 | 中国船舶重工集团公司第七0三研究所 | Double-low-pressure-cylinder zero-output steam turbine set regenerative system and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108506057B (en) | 2023-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108506057A (en) | A kind of co-generation unit and adjusting method for cutting off low pressure (LP) cylinder into vapour | |
| CN107956517B (en) | Thermodynamic system and method for deep thermal decoupling | |
| US8505309B2 (en) | Systems and methods for improving the efficiency of a combined cycle power plant | |
| CN111577410B (en) | Gas turbine inlet air temperature control device and gas turbine inlet air temperature control method | |
| CN206035552U (en) | Cogeneration vapour turbine system | |
| CN108343479A (en) | A kind of solidifying pumping back of the body heating system and adjusting method based on two units | |
| CN207813667U (en) | Low pressure cylinder cooling system based on different steam ports | |
| CN105697075A (en) | Extraction condensing heat supply system additionally provided with non-reheat medium-pressure steam turbine | |
| CN108035777A (en) | A kind of fired power generating unit mesolow cylinder combines zero output heating system and method | |
| CN106194297A (en) | The double branch road heating system of a kind of cogeneration turbine | |
| CN104975887B (en) | Compound feed pump turbine for thermal power plant and thermodynamic system | |
| CN210239765U (en) | Safe energy-saving steam extraction and heat supply system capable of flexibly adjusting steam inlet of low-pressure cylinder | |
| CN208138012U (en) | A kind of co-generation unit for cutting off low pressure (LP) cylinder into vapour | |
| CN209688957U (en) | The high back pressure heating system of thermoelectricity decoupling | |
| CN111365748B (en) | Heat supply method and heat supply system of cogeneration unit | |
| CN109441570A (en) | One kind is coagulated in combination for two units takes out back heating system and operation method | |
| CN109854315A (en) | A kind of heating system and its operation method integrated for Combined cycle gas-steam turbine unit steam extraction | |
| CN207813675U (en) | A kind of co-generation unit for carrying on the back heat supply for solidifying pumping | |
| CN110793011A (en) | Two-stage steam extraction type medium-temperature and medium-pressure waste incineration power generation system and use method thereof | |
| CN108104887A (en) | The therrmodynamic system of double reheat | |
| CN206190339U (en) | Two branch road heating system of cogeneration steam turbine | |
| CN110553301B (en) | Heat supply method and system for air cooling unit | |
| CN207674551U (en) | A kind of cooling tower antifreezing system for the solidifying pumping back of the body heat supply of steam turbine | |
| CN1034964C (en) | Cold, heat electric shaft producting device | |
| CN217082504U (en) | Wide-load denitration system with stable combustion performance of boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |