CN105840251A - Wide-adaptability air cooling system based on exhaust steam diversion - Google Patents
Wide-adaptability air cooling system based on exhaust steam diversion Download PDFInfo
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- CN105840251A CN105840251A CN201610265040.8A CN201610265040A CN105840251A CN 105840251 A CN105840251 A CN 105840251A CN 201610265040 A CN201610265040 A CN 201610265040A CN 105840251 A CN105840251 A CN 105840251A
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- condenser
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- supply network
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B7/00—Combinations of two or more condensers, e.g. provision of reserve condenser
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a wide-adaptability air cooling system, in particular to a wide-adaptability air cooling system based on exhaust steam diversion. According to the wide-adaptability air cooling system based on exhaust steam diversion, the problem that the heat net heat loads are not matched with the unit heat supply quantity due to the fact that the backpressure of an existing air cooling system unit is not prone to being controlled and exceeds the limit easily, and the heat loads fluctuate frequently during heat supply period is solved. A main condenser is connected with an exhaust steam outlet of a low-pressure cylinder through a first pipeline. A circulating cooling water inlet of the main condenser is connected with a circulating cooling water outlet of an air cooling tower. A circulating cooling water outlet of the main condenser is connected with a circulating cooling water inlet of an additional condenser through a second pipeline. A circulating cooling water outlet of the additional condenser is connected with a circulating cooling water inlet of the air cooling tower through a circulating water pump. The first pipeline is connected with the additional condenser through a steam extraction device. The main condenser and the additional condenser are connected with a third pipeline through condensate pumps. The third pipeline is connected with a low-pressure heater. The wide-adaptability air cooling system based on exhaust steam diversion belongs to the field of power generation systems.
Description
Technical field
The present invention relates to a kind of wide apaptability air cooling system, be specifically related to a kind of wide apaptability of based on steam discharge shunting air cooling system
System, belongs to electricity generation system field.
Background technology
Air cooling technique is a kind of thermal power plant's cooling technology for the purpose of water saving, is a kind of with air replacement water as cooling medium
The type of cooling, what it was direct or indirect cools down, with air, the exhaust steam that steam turbine is got rid of.China is vast in territory, water, coal etc.
Resource distribution is the most unbalanced, and in China North China, Deng Fumei water-deficient area, northwest, the air cooling technique in power plant has most as one
The water-saving thermal power generating technology of effect, has obtained extremely wide application.According to statistics, after using air cooling technique, thermal power plant can
With using water wisely 75%～80%, the water consumption of 600MW unit can be reduced to 360m3About/h.The exploitation of air cooling technique
Research is classified as emphasis key scientific and technological projects by the National Development and Reform Commission, and State Grid Corporation of China is in " vigor power plant " ten
First Five-Year Plan " water saving plan " clearly propose, to actively study air cooling technique, in water-deficient area popularization and application.
Up to now, the air cooling system being applied to power plant mainly has 3 kinds, i.e. direct air cooling system, belt surface formula condensing
The indirect air cooling system of device is referred to as Harmon system and the indirect air cooling system of band direct-contact type condenser not only but also be referred to as sea Le system
System.Direct air cooling system is that exhaust steam in steam turbine directly carries out heat exchange with surrounding air；Indirect air cooling system is exhaust steam in steam turbine
Indirect heat exchange is carried out by recirculated cooling water and surrounding air.Direct air cooling system all uses mechanical type draft type, and two
Plant indirect air cooling system and mainly utilize natural ventilation system.Indirect air cooling system is the suction force effect utilizing double-curve cooling column
Carry out gravity-flow ventilation, exhaust steam in steam turbine is carried out indirect heat exchange by recirculated cooling water and surrounding air.The back of the body in condenser
Pressing the most stable, cooling effect is preferable.For same pattern steam turbine, the security of its summer operation is of a relatively high.China
Indirect air cooling technology maturation relatively early, simply compares coal consumption with humid-cool system higher, and has that floor space is big, initial cost is high
Problem.
The domestic theory and practice through for many years is studied, main field and in the world fired power generating unit renovation technique level be base
This is suitable, owing to China is based on thermoelectricity, is even more than external related system from some systematic difference range and maturity.
But, the most external or domestic, the restriction condition that air cooling system runs on a large scale still exists, and the most how to realize air cooling
The regulation and control of unit width scope, ensure economy while water saving, and this is the emphasis studied about air cooling system the most both at home and abroad
Problem.
The most traditional air cooling system or Novel air cooling system all exists the problem that economy is low, in order to improve unit operation
Economy, important means reduce cold source energy exactly.A kind of scheme is to be carried out by the UTILIZATION OF VESIDUAL HEAT IN heat pump of recirculated water
Accumulation of energy, the energy heats heat supply network recirculated water then heat pump stored, thus reach to reduce the purpose of cold source energy.But it is this
There is a series of problem in scheme, first, improvement cost is high, and heat pump floor space is big, needs to mate independent factory building
Or workshop, additionally, multiple stage heat pump networking operation can produce impact, an equipment generation problem to unit, can be involved other
Equipment even affects the operation of main frame.Owing to Air-cooled Unit back pressure is high, utilizing Air-cooled Unit to carry out high back pressure heat supply is also to be remaining
The important means of heat utilization.But, owing to Winter heat supply phase back pressure is high relative to pure condensate operating mode, the leaf run under pure condensate operating mode
Sheet intensity is unable to reach high back pressure duty requirements, and high back pressure exhaust stage blade is operated in moist steam region, damages exhaust stage blade
Greatly, therefore carry out high back pressure heat supply must equipment be transformed.The most feasible high back pressure heat supply modification scheme has: double
Axle steam turbine gets rid of low pressure (LP) cylinder in the winter time and carries out direct heating；Or use winter, summer two to overlap rotor scheme, indirect air cooling
Unit in summer uses clammy blade rotor properly functioning, uses high back pressure blade rotor winter instead and carries out heat supply.These several transformation sides
Although case disclosure satisfy that the safe and stable operation of equipment under different working condition, but needs two set rotors, carry out Summer and winter rotation,
Investment and maintenance cost are huge, also the maintenance of equipment and maintenance can be brought great inconvenience.Birotor etc. why is used to become
The scheme of structure carries out Air-cooled Unit high back pressure heat supply, is that the control measures of existing Air-cooled Unit lack after all, causes
The accommodation that Air-cooled Unit puts into operation under bigger economy is the least.If able to realize Air-cooled Unit back pressure, the tune of temperature
Control, i.e. may be implemented in the economical operation that can ensure Air-cooled Unit under different operating mode.
Summary of the invention
The present invention solves that existing air cooling system unit back pressuce is wayward easily to transfinite, and heat supply phase thermic load frequent fluctuation is led
The heat supply network thermic load caused and the unmatched problem of unit heating load, and then a kind of wide apaptability air cooling based on steam discharge shunting is proposed
System.
The present invention solves that the problems referred to above adopt the technical scheme that: the present invention includes the first pipeline, vapor extraction device, main condensing
Device, the second pipeline, additional condenser, water circulating pump, air cooling tower, the 3rd pipeline and two condensate pumps, main condenser leads to
Crossing the first pipeline to be connected with low pressure (LP) cylinder exhaust steam outlet, the circulating cooling water inlet of main condenser goes out with the recirculated cooling water of air cooling tower
Mouth connects, and the circulating cooling water out of main condenser is connected with the circulating cooling water inlet of additional condenser by the second pipeline,
The circulating cooling water out of additional condenser is connected with the circulating cooling water inlet of air cooling tower by water circulating pump, and the first pipeline leads to
Crossing vapor extraction device to be connected with additional condenser, main condenser and additional condenser are respectively by a condensate pump and the 3rd pipe
Road connects, and the 3rd pipeline is connected with low-pressure heater.
The present invention includes the first pipeline, vapor extraction device, main condenser, the second pipeline, additional condenser, water circulating pump, sky
Cold tower, the 3rd pipeline, condensate pump and the pressure regulation hydraulic turbine, main condenser is connected with low pressure (LP) cylinder exhaust steam outlet by the first pipeline,
First pipeline is connected with additional condenser by vapor extraction device, and main condenser is connected with low-pressure heater by the 3rd pipeline, solidifying
Bearing water pump to be arranged on the 3rd pipeline, additional condenser is connected by the second pipeline and the 3rd pipeline, and the 3rd pipeline is by circulation
Water pump is connected with the circulating cooling water inlet of air cooling tower, and the circulating cooling water out of air cooling tower is solidifying with additional by the pressure regulation hydraulic turbine
Vapour device and main condenser connect.
Further, vapor extraction device include the vapour pressure mechanism of qi small steam turbine supporting with vapour pressure mechanism of qi, the 4th pipeline,
5th pipeline and small steam turbine control valve, the first pipeline is connected with additional condenser by vapour pressure mechanism of qi, and steam is calmed the anger
Machine is connected with small steam turbine, and small steam turbine is connected with unit the 4th exhaust point by the 4th pipeline, and small steam turbine passes through
5th pipeline is connected with main condenser, and small steam turbine control valve is arranged on the 4th pipeline.
Further, vapor extraction device can be replaced by steam ejector, and the first pipeline is solidifying with additional by described steam ejector
Vapour device connects, and the Working-fluid intaking of steam ejector is connected with unit the 4th exhaust point, and the driving fluid of steam ejector enters
Mouth is connected with the first pipeline, and the pipeline that the Working-fluid intaking of steam ejector is connected with unit the 4th exhaust point is provided with steam
Injector control valve.
Further, present invention additionally comprises the 6th pipeline, circulation pump of heat-supply network, the 7th pipeline, heat exchangers for district heating, air cooling tower
Circulating water outlet valve, heat supply network circulating water outlet valve, air cooling tower circulation water inlet valve door, heat supply network circulation water inlet valve door and
Heat supply network heat exchanger, the pipeline between circulating cooling water inlet and the air cooling tower circulating cooling water out of main condenser is by the 6th pipe
Road is connected with circulation pump of heat-supply network, by the 6th between circulating cooling water inlet and the heat supply network heat exchanger pusher side entrance of main condenser
Pipeline connects, and circulation pump of heat-supply network and heat supply network circulating water outlet valve are sequentially arranged on the 6th pipeline, main condenser recirculated water
Outlet is connected by the second pipeline with additional condenser recirculated water entrance, and the circulating water outlet of additional condenser circulates with air cooling tower
It is sequentially provided with air cooling tower circulation water inlet valve door and water circulating pump, the circulation of additional condenser on the pipeline connected between water inlet
Water out is connected by the 7th pipeline with heat supply network heat exchanger pusher side entrance, and heat supply network circulation water inlet valve door and heat exchangers for district heating are successively
Being arranged on the 7th pipeline, heat supply network heat exchanger is connected by pipeline with heat supply network user.
The invention has the beneficial effects as follows: 1, when nominal situation, the present invention can utilize vapor extraction device to carry out steam discharge shunt volume
Regulation, it is achieved that the control to unit back pressuce, solves the unmanageable problem of Air-cooled Unit back pressure, and by back pressure
Regulation and control, it is achieved that the lifting to unit economy；
2, in the case of summer environment temperature is higher, it is weary that the present invention can adjust unit by the amount of drawing gas adjusting vapor extraction device
The shunt volume of vapour, makes the heat of condensation of part exhaust steam discharge in additional condenser, it is achieved that the control to unit back pressuce, it is ensured that
Under extreme operating condition, back pressure does not transfinites, and greatly improves the scope of application of Air-cooled Unit；
3, when Air-cooled Unit utilizes high back pressure technology to carry out heat supply in the winter time, unit can according to the change of heat supply network thermic load,
Utilize vapor extraction device that the heat capacity of unit is adjusted so that it is to be adapted to season early winter with thermic load in season in severe winter relatively
Big difference, mates different size of heat supply network, greatly improves the scope of application of Air-cooled Unit.
Accompanying drawing explanation
Fig. 1 is cold group structural representation between wide apaptability Harmon formula based on steam discharge shunting, and Fig. 2 shunts based on steam discharge
Cold group structural representation between wide apaptability Hai Leshi, Fig. 3 be utilize vapour pressure mechanism of qi carry out bleeding shunting Harmon formula between cold
Set structure schematic diagram, Fig. 4 be utilize vapour pressure mechanism of qi carry out bleeding shunting wide apaptability Hai Leshi between cold set structure show
Being intended to, Fig. 5 is to utilize steam ejector to carry out the cold group schematic diagram between the Harmon formula shunted that draws gas, and Fig. 6 is to utilize steam to draw
Emitter carries out the cold group schematic diagram between the Hai Leshi shunted that draws gas；Fig. 7 is cold group profit between the Harmon formula adding additional condenser
Heat supply functional schematic is realized with high back pressure heat supply process.
Detailed description of the invention
Detailed description of the invention one: combine Fig. 1 and present embodiment is described, a kind of width based on steam discharge shunting described in present embodiment
Adaptability air cooling system include the first pipeline 1, vapor extraction device 2, main condenser the 3, second pipeline 5, additional condenser 6,
Water circulating pump 7, air cooling tower the 8, the 3rd pipeline 9 and two condensate pumps 10, main condenser 3 passes through the first pipeline 1 with low
Cylinder pressure exhaust steam outlet connects, and the circulating cooling water inlet of main condenser 3 is connected with the circulating cooling water out of air cooling tower 8, main
The circulating cooling water out of condenser 3 is connected with the circulating cooling water inlet of additional condenser 6 by the second pipeline 5, additional
The circulating cooling water out of condenser 6 is connected with the circulating cooling water inlet of air cooling tower 8 by water circulating pump 7, the first pipeline
1 is connected with additional condenser 6 by vapor extraction device 2, and main condenser 3 and additional condenser 6 are respectively by a condensation
Water pump 10 is connected with the 3rd pipeline 9, and the 3rd pipeline 9 is connected with low-pressure heater.
Under nominal situation, vapor extraction device 2 is in off position, and unit low pressure (LP) cylinder exhaust steam is all entered by the first pipeline 1
Main condenser 3 carries out condensing cooling；When ambient temperature rising, unit back pressuce increase, vapor extraction device 2 is in
Duty, cools down by part of generating units low pressure (LP) cylinder exhaust steam is evacuated to additional condenser 6, it is achieved reduce main condenser 3
Interior pressure (i.e. unit back pressuce), it is ensured that the back pressure of unit is less than limiting value；For different operating modes, can be by adjusting
The duty of vapor extraction device 2 adjusts extraction flow.
Detailed description of the invention two: combine Fig. 2 and present embodiment is described, a kind of width based on steam discharge shunting described in present embodiment
Adaptability air cooling system include the first pipeline 1, vapor extraction device 2, main condenser the 3, second pipeline 5, additional condenser 6,
Water circulating pump 7, air cooling tower the 8, the 3rd pipeline 9, condensate pump 10 and the pressure regulation hydraulic turbine 11, main condenser 3 is by first
Pipeline 1 is connected with low pressure (LP) cylinder exhaust steam outlet, and the first pipeline 1 is connected with additional condenser 6 by vapor extraction device 2, main condensing
Device 3 is connected with low-pressure heater by the 3rd pipeline 9, and condensate pump 10 is arranged on the 3rd pipeline 9, additional condenser
6 are connected with the 3rd pipeline 9 by the second pipeline 5, the 3rd pipeline 9 circulating cooling by water circulating pump 7 with air cooling tower 8
Water inlet connects, and the circulating cooling water out of air cooling tower 8 is by the pressure regulation hydraulic turbine 11 and additional condenser 6 and main condenser
3 connect.Present embodiment is additionally provided with filling pipe 22 on main condenser 3.
Under nominal situation, vapor extraction device 2 is in off position, and unit low pressure (LP) cylinder exhaust steam is all entered by the first pipeline 1
Main condenser 3 carries out condensing cooling；When ambient temperature rising, unit back pressuce increase, vapor extraction device 2 is in
Duty, cools down by part of generating units low pressure (LP) cylinder exhaust steam is evacuated to additional condenser 6, it is achieved reduce main condenser 3
Interior pressure (i.e. unit back pressuce), it is ensured that the back pressure of unit is less than limiting value；For different operating modes, can be by adjusting
The duty of vapor extraction device 2 adjusts extraction flow.
Detailed description of the invention three: combine Fig. 3 and Fig. 4 and present embodiment is described, described in present embodiment, one is divided based on steam discharge
The vapor extraction device 2 of the wide apaptability air cooling system of stream includes the vapour pressure mechanism of qi 2-1 Miniature steamer supporting with vapour pressure mechanism of qi
Machine 2-2, the 4th pipeline 2-3, the 5th pipeline 2-4 and small steam turbine control valve 2-5, the first pipeline 1 passes through vapour pressure
Mechanism of qi 2-1 is connected with additional condenser 6, and vapour pressure mechanism of qi 2-1 is connected with small steam turbine 2-2, small steam turbine 2-2
Being connected with unit the 4th exhaust point by the 4th pipeline 2-3, small steam turbine 2-2 is by the 5th pipeline 2-4 and main condenser
3 connect, and small steam turbine control valve 2-5 is arranged on the 4th pipeline 2-3.Other composition and annexation are real with concrete
Execute mode one or two identical.
Under nominal situation, vapour pressure mechanism of qi 2-1, small steam turbine 2-2 are in off position, and unit low pressure (LP) cylinder exhaust steam is complete
Portion enters main condenser 3 by the first pipeline 1 and carries out condensing cooling；Raise in ambient temperature, unit back pressuce rises therewith
Gao Shi, by open small steam turbine control valve 2-5 make unit the 4th exhaust point draw gas entrance small steam turbine 2-2 do work,
Drive vapour pressure mechanism of qi 2-1 work simultaneously, can be weary by the unit low pressure (LP) cylinder in the first pipeline 1 during vapour pressure mechanism of qi 2-1 work
Vapour suction cools down to additional condenser 6, it is achieved reduce the pressure (i.e. unit back pressuce) in main condenser 3, it is ensured that
The back pressure of unit is less than limiting value；Different operating modes can be adjusted by the aperture changing small steam turbine control valve 2-5
Whole small steam turbine 2-2 does work, thus adjusts the duty of vapour pressure mechanism of qi 2-1, it is achieved the control to steam discharge shunt volume.
Detailed description of the invention four: combine Fig. 5 and Fig. 6 and present embodiment is described, described in present embodiment, one is divided based on steam discharge
The vapor extraction device 2 of the wide apaptability air cooling system of stream can be replaced by steam ejector 4, and the first pipeline 1 is by described steam
Injector 4 is connected with additional condenser 6, and the Working-fluid intaking of steam ejector 4 is connected with unit the 4th exhaust point, steams
Driving fluid entrance and first pipeline 1 of vapour injector connect, and the Working-fluid intaking of steam ejector 4 is taken out with unit the 4th
The pipeline that vapour point connects is provided with steam ejector control valve 4-1.Present embodiment is additionally provided with moisturizing on main condenser 3
Pipe 22.Other composition and annexation are identical with detailed description of the invention one or two.
Under nominal situation, steam ejector 4 is in off position, and unit low pressure (LP) cylinder exhaust steam is all by the first pipeline 1
Enter main condenser 3 to carry out condensing cooling；When ambient temperature rising, unit back pressuce increase, by opening steaming
Vapour injector control valve 4-1 makes unit the 4th exhaust point draw gas and enters steam ejector 4, by the unit in the first pipeline 1
Low pressure (LP) cylinder exhaust steam injection cools down to additional condenser 6, it is achieved reduce the pressure (i.e. unit back pressuce) in main condenser 3,
Ensure that the back pressure of unit is less than limiting value；Can be by adjusting opening of steam ejector control valve 4-1 for different operating modes
Degree is adjusted into unit the 4th exhaust point amount of drawing gas of steam ejector 4, it is achieved the control to bypassing exhaust amount.
Detailed description of the invention five: combine Fig. 7 and present embodiment is described, a kind of width based on steam discharge shunting described in present embodiment
Adaptability air cooling system also includes the 6th pipeline 12, circulation pump of heat-supply network the 13, the 7th pipeline 14, heat exchangers for district heating 15, sky
Cold tower circulating water outlet valve 16, heat supply network circulating water outlet valve 17, air cooling tower circulation water inlet valve door 18, heat supply network circulate
Water inlet valve 19 and heat supply network heat exchanger 20, the circulating cooling water inlet of main condenser 3 goes out with air cooling tower 8 recirculated cooling water
Pipeline between Kou is connected with circulation pump of heat-supply network 13 by the 6th pipeline 12, the circulating cooling water inlet of main condenser 3 and
Connected by the 6th pipeline 12 between heat supply network heat exchanger 20 pusher side entrance, circulation pump of heat-supply network 13 and heat supply network circulating water outlet
Valve 17 is sequentially arranged on the 6th pipeline 12, and main condenser 3 circulating water outlet leads to additional condenser 6 recirculated water entrance
Cross the second pipeline 5 to connect, on the pipeline being connected between the circulating water outlet of additional condenser 6 with air cooling tower 8 recirculated water entrance
Being sequentially provided with air cooling tower circulation water inlet valve door 18 and water circulating pump 7, the circulating water outlet of additional condenser 6 changes with heat supply network
Hot device 20 pusher side entrance is connected by the 7th pipeline 14, and heat supply network circulation water inlet valve door 19 and heat exchangers for district heating 15 are pacified successively
Being contained on the 7th pipeline 14, heat supply network heat exchanger 20 is connected by pipeline with heat supply network user 21.Other composition and annexation
Identical with detailed description of the invention three.
When unit uses the external heat supply of high back pressure heat supply process, when the temperature of heat supply network backwater is higher, may result in main condensing
The pressure of device 3 raises, i.e. unit back pressuce raises, and adjusts Miniature steamer now by adjusting small steam turbine control valve 2-5
The duty of machine 2-2 and vapour pressure steam turbine 2-1, it is achieved the adjustment to steam discharge shunt volume, controls the pressure in main condenser 3
Power does not transfinites；Within the heat supply phase, the fluctuation of heat supply network user heat demand amount is relatively big, now by adjusting small steam turbine control valve
2-5 adjusts the duty of small steam turbine 2-2 and vapour pressure steam turbine 2-1, it is achieved the adjustment to steam discharge shunt volume, makes machine
The low pressure (LP) cylinder exhaust steam of group is flux matched with heat supply network heat demand with the thermal discharge in additional condenser 6 at main condenser 3.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, although
The present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any those skilled in the art,
In the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or is modified to
With the Equivalent embodiments of change, as long as being without departing from technical solution of the present invention content, according to the technical spirit of the present invention, at this
Within the spirit of invention and principle, any simple amendment, equivalent and the improvement etc. that above example is made, the most still
Within belonging to the protection domain of technical solution of the present invention.
Claims (5)
1. a wide apaptability air cooling system based on steam discharge shunting, it is characterised in that: described a kind of width based on steam discharge shunting
Adaptability air cooling system includes the first pipeline (1), vapor extraction device (2), main condenser (3), the second pipeline (5), adds
Condenser (6), water circulating pump (7), air cooling tower (8), the 3rd pipeline (9) and two condensate pumps (10), main condensing
Device (3) is connected with low pressure (LP) cylinder exhaust steam outlet by the first pipeline (1), and the circulating cooling water inlet of main condenser (3) is with empty
The circulating cooling water out of cold tower (8) connects, the circulating cooling water out of main condenser (3) by the second pipeline (5) with
The circulating cooling water inlet of additional condenser (6) connects, and the circulating cooling water out of additional condenser (6) passes through recirculated water
Pump (7) is connected with the circulating cooling water inlet of air cooling tower (8), and the first pipeline (1) is by vapor extraction device (2) and adds
Condenser (6) connects, and main condenser (3) and additional condenser (6) are respectively by a condensate pump (10) and the
Three pipelines (9) connect, and the 3rd pipeline (9) is connected with low-pressure heater.
2. a wide apaptability air cooling system based on steam discharge shunting, it is characterised in that: described a kind of width based on steam discharge shunting
Adaptability air cooling system includes the first pipeline (1), vapor extraction device (2), main condenser (3), the second pipeline (5), adds
Condenser (6), water circulating pump (7), air cooling tower (8), the 3rd pipeline (9), condensate pump (10) and the pressure regulation hydraulic turbine
(11), main condenser (3) is connected with low pressure (LP) cylinder exhaust steam outlet by the first pipeline (1), and the first pipeline (1) is by taking out
Vapour device (2) is connected with additional condenser (6), and main condenser (3) is by the 3rd pipeline (9) with low-pressure heater even
Connecing, condensate pump (10) is arranged on the 3rd pipeline (9), and additional condenser (6) passes through the second pipeline (5) and the 3rd
Pipeline (9) connects, and the 3rd pipeline (9) is connected with the circulating cooling water inlet of air cooling tower (8) by water circulating pump (7),
The circulating cooling water out of air cooling tower (8) is by the pressure regulation hydraulic turbine (11) and additional condenser (6) and main condenser (3)
Connect.
A kind of wide apaptability air cooling system based on steam discharge shunting the most according to claim 1 or claim 2, it is characterised in that: take out
Vapour device (2) include vapour pressure mechanism of qi (2-1) small steam turbine (2-2) supporting with vapour pressure mechanism of qi, the 4th pipeline (2-3),
5th pipeline (2-4) and small steam turbine control valve (2-5), the first pipeline (1) by vapour pressure mechanism of qi (2-1) with
Additional condenser (6) connects, and vapour pressure mechanism of qi (2-1) is connected with small steam turbine (2-2), small steam turbine (2-2)
Be connected with unit the 4th exhaust point by the 4th pipeline (2-3), small steam turbine (2-2) by the 5th pipeline (2-4) with
Main condenser (3) connects, and small steam turbine control valve (2-5) is arranged on the 4th pipeline (2-3).
A kind of wide apaptability air cooling system based on steam discharge shunting the most according to claim 1 or claim 2, it is characterised in that: take out
Vapour device (2) can be replaced by steam ejector (4), and the first pipeline (1) is by described steam ejector (4) and adds
Condenser (6) connects, and the Working-fluid intaking of steam ejector (4) is connected with unit the 4th exhaust point, steam ejector
Driving fluid entrance and the first pipeline (1) connect, the Working-fluid intaking of steam ejector (4) draws gas with unit the 4th
The pipeline that point connects is provided with steam ejector control valve (4-1).
A kind of wide apaptability air cooling system based on steam discharge shunting, it is characterised in that: described one
Plant wide apaptability air cooling system based on steam discharge shunting and also include the 6th pipeline (12), circulation pump of heat-supply network (13), the 7th pipe
Road (14), heat exchangers for district heating (15), air cooling tower circulating water outlet valve (16), heat supply network circulating water outlet valve (17),
Air cooling tower circulation water inlet valve door (18), heat supply network circulation water inlet valve door (19) and heat supply network heat exchanger (20), main condenser
(3) the pipeline between circulating cooling water inlet and air cooling tower (8) circulating cooling water out by the 6th pipeline (12) with
Circulation pump of heat-supply network (13) connects, the circulating cooling water inlet of main condenser (3) and heat supply network heat exchanger (20) pusher side entrance
Between by the 6th pipeline (12) connect, circulation pump of heat-supply network (13) and heat supply network circulating water outlet valve (17) are pacified successively
Being contained on the 6th pipeline (12), main condenser (3) circulating water outlet and additional condenser (6) recirculated water entrance are by the
Two pipelines (5) connect, the pipe being connected between the circulating water outlet of additional condenser (6) with air cooling tower (8) recirculated water entrance
Being sequentially provided with air cooling tower circulation water inlet valve door (18) and water circulating pump (7) on road, the recirculated water of additional condenser (6) goes out
Mouthful with heat supply network heat exchanger (20) pusher side entrance pass through the 7th pipeline (14) be connected, heat supply network circulation water inlet valve door (19) and
Heat exchangers for district heating (15) is sequentially arranged on the 7th pipeline (14), and heat supply network heat exchanger (20) leads to heat supply network user (21)
Cross pipeline to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265040.8A CN105840251A (en) | 2016-04-26 | 2016-04-26 | Wide-adaptability air cooling system based on exhaust steam diversion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN111577409A (en) * | 2020-05-09 | 2020-08-25 | 北京翰能电力科技有限公司 | Recovery system for recovering exhaust steam of steam turbine by adopting cascade utilization and supercharging upgrading technology |
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| 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 |
| CN111577409A (en) * | 2020-05-09 | 2020-08-25 | 北京翰能电力科技有限公司 | Recovery system for recovering exhaust steam of steam turbine by adopting cascade utilization and supercharging upgrading technology |
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