CN207179770U - A kind of Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches - Google Patents
A kind of Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches Download PDFInfo
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- CN207179770U CN207179770U CN201720947616.9U CN201720947616U CN207179770U CN 207179770 U CN207179770 U CN 207179770U CN 201720947616 U CN201720947616 U CN 201720947616U CN 207179770 U CN207179770 U CN 207179770U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 17
- 238000010792 warming Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 12
- 239000002918 waste heat Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A kind of Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches, including the Turbo-generator Set being made up of generator, steam turbine high intermediate pressure cylinder, turbine low pressure cylinder, SSS clutches are set between steam turbine high intermediate pressure cylinder and turbine low pressure cylinder；Steam turbine high intermediate pressure cylinder by SSS clutches can off-the-line turbine low pressure cylinder, turbine low pressure cylinder connection condenser；The steam discharge of the steam turbine high intermediate pressure cylinder is passed through heat exchangers for district heating and heat supply network one-level drain cooler successively, heat supply network one-level drain cooler connects raw water heater, and heat exchangers for district heating connects user's heat supply network backwater main pipe with heat supply network one-level drain cooler by circulating water line；In the heat supply network one-level drain cooler it is hydrophobic first to user's heat supply network back into row heat, then the unboiled water in raw water heater is heated again, finally by the hydrophobic inflow condenser of heat exchange, steam had not only been saved but also had reduced investment.
Description
Technical field
It the utility model is related to Gas-steam Combined Cycle heating system, and in particular to a kind of connection based on SSS clutches
Cycle Unit Gateway Station in Heating Network system is closed, using hydrophobic waste heat heat supply network backwater and heating unboiled water, reduces the loss of heat.
Background technology
For the Gas-steam Combined Cycle thermal power plant unit of routine, it is main include combustion Turbo-generator Set, waste heat boiler and
The big unit of Turbo-generator Set three, the wherein heat supply of unit are mainly completed by Turbo-generator Set unit, steam turbine generator
Group unit includes steam-extracting type steam turbine, condenser, generator, condensate pump and Gateway Station in Heating Network etc., and steam is in steam-extracting type steamer
In machine after expansion work, steam discharge is condensed into condensate into condenser and reenters waste heat boiler use.Into Gateway Station in Heating Network
Heating steam is extracted out from extraction turbine, and the general unit maximum amount of drawing gas is 70% or so of steam turbine throttle flow,
The steam discharge of remaining 30% throttle flow enters condenser as cold source energy.Want to improve the amount of drawing gas, Yi Zhongfang to greatest extent
Method is to use back pressure turbine, but is no condenser the characteristics of back pressure turbine, does the steam of work(all for supplying
Heat, the amount of drawing gas is maximum, but this requires that annual thermic load is stable, so back pressure turbine has the limitation for receiving thermic load, has
Certain limitation.In fact, the power plant's winter heating or cooling in summer steam consumption of the overwhelming majority are larger, remaining season heat supply needs
The amount of asking is reduced, and excess steam can be used to continue to generate electricity.So how to accomplish the change according to thermic load, the amount of drawing gas can either be taken into account
Maximum, while and can solves, because season steam consumption changes, excess steam to be converted into the function of generating, it is using energy source side instantly
Face, which needs to improve, to be solved the problems, such as.
SSS (Synchro-Self-Shifting) clutch general principle：For Gas-steam Combined Cycle heat supply machine
The extraction condensing type steam turbine of group, connected between high pressure module axle and low-voltage module axle using SSS clutches, turbine generator seat in the plane
In high-pressure side, low pressure (LP) cylinder can be by SSS throw-out-of clutches, and steam turbine both can back pressure operation or operating mode of drawing gas under supplying thermal condition
Operation, when the Winter heat supply operating mode amount of drawing gas is big, steam turbine low pressure (LP) cylinder off-the-line, high intermediate pressure cylinder back pressure operation, except low pressure (LP) cylinder axle envelope vapour
Outside part leakage vapour, intermediate pressure cylinder, which draws gas, is completely used for the heating of heat exchangers for district heating, the amount of drawing gas increase about 20%, reaches increase and draws gas
The purpose of amount；During non-supplying thermal condition, without drawing gas, high pressure cylinder shaft and low pressure cylinder shaft are linked to be an axle, machine by SSS clutches
Group pure condensate operation.
The characteristics of due to gas-steam combined cycle set, oxygen-eliminating device are typically all to use built-in deaerator, are arranged in
Waste heat boiler top, is shared with low-pressure drum, so hydrophobic after heat exchangers for district heating typically all enters condenser.For band SSS
The Gas-steam Combined Cycle thermal power plant unit of clutch, when using back pressure operating mode run, due to draw gas come intermediate pressure cylinder steam discharge,
Parameter is high relative in general thermal power plant unit, 350 DEG C of about 0.6MPa, is handed over the heat supply network recirculated water backwater heat of 70 DEG C of temperature
After changing, by heat exchangers for district heating, drain temperature is up to 90 DEG C, and the hydrophobic row of high temperature can cause to waste to condenser to waste heat, to solidifying
The heat exchange of vapour device can also have an impact, and increase the dosage of recirculated cooling water, so it is to solve the above problems only to reduce drain temperature
One approach.
Utility model content
The purpose of this utility model is to be directed to above-mentioned the problems of the prior art, there is provided a kind of based on SSS clutches
Combined Cycle Unit Gateway Station in Heating Network system, is sufficiently utilized to hydrophobic waste heat, has both been saved steam and has been used for generating electricity, has subtracted again
Few investment.
To achieve these goals, the technical solution adopted in the utility model is：
Including the Turbo-generator Set being made up of generator, steam turbine high intermediate pressure cylinder, turbine low pressure cylinder, described steamer
SSS clutches are set between machine high intermediate pressure cylinder and turbine low pressure cylinder；Steam turbine high intermediate pressure cylinder being capable of off-the-line by SSS clutches
Turbine low pressure cylinder, turbine low pressure cylinder connection condenser；Drawing gas for the steam turbine high intermediate pressure cylinder is passed through heat supply network heating successively
Device and heat supply network one-level drain cooler, heat supply network one-level drain cooler connection raw water heater, heat exchangers for district heating and heat supply network one-level
Drain cooler connects user's heat supply network backwater main pipe by circulating water line；Hydrophobic head in the heat supply network one-level drain cooler
First user's heat supply network backwater is heated, then the unboiled water in raw water heater heated again, last hydrophobic inflow condensing
Device.
Heat exchangers for district heating connects user's heat supply network backwater main pipe, heat supply network with heat supply network one-level drain cooler by circulating water line
One-level drain cooler connects raw water heater, the turbine low pressure cylinder connection condenser of Turbo-generator Set.
The exhaust steam pressure of the steam turbine high intermediate pressure cylinder for being passed through heat exchangers for district heating is 0.6MPa, and temperature is 350 DEG C.
Drain temperature in the heat supply network one-level drain cooler is 90 DEG C, and 75 DEG C are reduced to after heating user's heat exchange,
68.5 DEG C are reduced to after being heated again to the unboiled water in raw water heater, finally flows into condenser；
The temperature of user's heat supply network backwater is 70 DEG C, is introduced into heat supply network one-level drain cooler and is warming up to 95 DEG C, enters back into heat
Net heater makes temperature be heated to 130 DEG C, is passed through among user's heat supply network water main pipe.
Connect and be provided with pumps for hot water supply net on the circulating water line of user's heat supply network exchanged water main pipe.
Drain filter is provided between described pumps for hot water supply net and user's heat supply network backwater main pipe.
Compared with prior art, the utility model has following beneficial effect：By setting the hydrophobic cooling of heat supply network one-level
Device so that hydrophobic waste heat is fully utilized, hydrophobic to be heated first to user's heat supply network backwater, tentatively improves user
The temperature of heat supply network backwater, reduce temperature after it is hydrophobic be passed through raw water heater again, the unboiled water in raw water heater is added
Heat so that the steam discharge latent heat into condenser is reduced, and is also reduced therewith for cooling down the quantity of circulating water of steam discharge, has been saved circulation and has been used
Water.The utility model is provided with raw water heater, makes full use of hydrophobic waste heat to heat unboiled water, reduces from extracted steam from turbine
Individually draw and heat unboiled water all the way, not only saved steam and be used for generating electricity but also reducing investment.In addition, the utility model passes through setting
SSS clutches between steam turbine high intermediate pressure cylinder and turbine low pressure cylinder, can when unit supplying thermal condition is run off-the-line vapour
Turbine low pressure (LP) cylinder, make steam turbine high intermediate pressure cylinder back pressure operation, now steam turbine high intermediate pressure cylinder steam discharge is complete through high intermediate pressure cylinder gland steam exhauster
Portion is used to heat heat exchangers for district heating, by increasing capacitance it is possible to increase 20% heat supply network heating load, efficient energy-saving.
Brief description of the drawings
Fig. 1 overall system architecture schematic diagrames of the present utility model；
In accompanying drawing：1- steam turbine high intermediate pressure cylinders；2-SSS clutches；3- condensers；4- heat exchangers for district heatings；5- heat supply network one-levels
Drain cooler；6- raw water heaters；7- pumps for hot water supply net.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model includes by generator, steam turbine high intermediate pressure cylinder 1, turbine low pressure cylinder group in structure
Into Turbo-generator Set, SSS clutches 2 are set between steam turbine high intermediate pressure cylinder 1 and turbine low pressure cylinder；Steam turbine high pressure
Cylinder 1 by SSS clutches 2 can off-the-line turbine low pressure cylinder, turbine low pressure cylinder connection condenser 3；Steam turbine high intermediate pressure cylinder 1
Steam discharge be passed through heat exchangers for district heating 4 and heat supply network one-level drain cooler 5 successively, heat supply network one-level drain cooler 5 connects unboiled water and added
Hot device 6, heat exchangers for district heating 4 and heat supply network one-level drain cooler 5 connect user's heat supply network backwater main pipe by circulating water line, circulation
Water lines are provided with pumps for hot water supply net 7, and drain filter is provided between pumps for hot water supply net 7 and user's heat supply network exchanged water main pipe.
Steam turbine high intermediate pressure cylinder 1 with SSS clutches 2 is transported by back pressure after the off-the-line turbine low pressure cylinder of SSS clutches 2
OK, the steam discharge of steam turbine high intermediate pressure cylinder 1 heats into heat exchangers for district heating 4 to heat supply network backwater, extraction pressure 0.6MPa, takes out
Stripping temperature is 350 DEG C, and drain temperature of the steam after the cooling of heat exchangers for district heating 4 is 90 DEG C, and the hydrophobic heat supply network one-level that enters back into is dredged
Water cooler 5 further heats to heat supply network backwater, and drain temperature is reduced to 75 DEG C, then is passed through the cooling life of raw water heater 6
Water, drain temperature are reduced to 68.5 DEG C, finally enter condenser 3.It is 1.6MPa from the heat supply network pressure of return water of pumps for hot water supply net 7,
Heat supply network return water temperature is 70 DEG C, is introduced into heat supply network one-level drain cooler 5 and carries out hydrophobic UTILIZATION OF VESIDUAL HEAT IN, carries heat supply network return water temperature
Height enters back into the heating-up temperature of heat exchangers for district heating 4 and reaches 130 DEG C, enter access customer heat supply network water main pipe to 95 DEG C.
Drain temperature of the present utility model is reduced to 68.5 DEG C from inflow condenser 3.
Particular embodiments described above, to the purpose of this utility model, technical scheme and beneficial effect have carried out entering one
The detailed description of step, should be understood that and these are only specific embodiment of the utility model, it is impossible to assert that this practicality is new
The embodiment of type is only limitted to this, all within the spirit and principles of the utility model, make it is some it is simple deduce or
Replace, should all be considered as belonging to the utility model and determine scope of patent protection by the claims submitted.
Claims (6)
- A kind of 1. Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches, it is characterised in that：Including by generator, vapour The Turbo-generator Set of turbine high intermediate pressure cylinder (1), turbine low pressure cylinder composition, described steam turbine high intermediate pressure cylinder (1) and steamer SSS clutches (2) are set between machine low pressure (LP) cylinder；Steam turbine high intermediate pressure cylinder (1) being capable of off-the-line steam turbine by SSS clutches (2) Low pressure (LP) cylinder, turbine low pressure cylinder connection condenser (3)；Drawing gas for the steam turbine high intermediate pressure cylinder (1) is passed through heat supply network heating successively Device (4) and heat supply network one-level drain cooler (5), heat supply network one-level drain cooler (5) connection raw water heater (6), heat supply network heating Device (4) connects user's heat supply network backwater main pipe with heat supply network one-level drain cooler (5) by circulating water line；The heat supply network one-level is dredged Hydrophobic in water cooler (5) is heated to user's heat supply network backwater first, and then the unboiled water in raw water heater (6) is entered again Row heating, last hydrophobic inflow condenser (3).
- 2. the Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches according to claim 1, it is characterised in that：Heat Net heater (4) connects user's heat supply network backwater main pipe, heat supply network one-level with heat supply network one-level drain cooler (5) by circulating water line Drain cooler (5) connection raw water heater (6), the turbine low pressure cylinder connection condenser (3) of Turbo-generator Set.
- 3. the Combined Cycle Unit Gateway Station in Heating Network system according to claim 1 or claim 2 based on SSS clutches, it is characterised in that： The exhaust steam pressure of the steam turbine high intermediate pressure cylinder (1) for being passed through heat exchangers for district heating (4) is 0.6MPa, and temperature is 350 DEG C.
- 4. the Combined Cycle Unit Gateway Station in Heating Network system according to claim 1 or claim 2 based on SSS clutches, it is characterised in that： Drain temperature in the heat supply network one-level drain cooler (5) is 90 DEG C, and 75 DEG C are reduced to after heating user's heat exchange, then to life Unboiled water in water heater (6) is reduced to 68.5 DEG C after being heated, and finally flows into condenser (3)；The temperature of user's heat supply network backwater is 70 DEG C, is introduced into heat supply network one-level drain cooler (5) and is warming up to 95 DEG C, enters back into heat supply network Heater (4) makes temperature be heated to 130 DEG C, is passed through among user's heat supply network water main pipe.
- 5. the Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches according to claim 1, it is characterised in that：Even Connect and pumps for hot water supply net (7) is provided with the circulating water line of user's heat supply network exchanged water main pipe.
- 6. the Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches according to claim 5, it is characterised in that：Institute Drain filter is provided between the pumps for hot water supply net (7) and user's heat supply network backwater main pipe stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947616.9U CN207179770U (en) | 2017-07-31 | 2017-07-31 | A kind of Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720947616.9U CN207179770U (en) | 2017-07-31 | 2017-07-31 | A kind of Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches |
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| Publication Number | Publication Date |
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| CN207179770U true CN207179770U (en) | 2018-04-03 |
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| CN201720947616.9U Active CN207179770U (en) | 2017-07-31 | 2017-07-31 | A kind of Combined Cycle Unit Gateway Station in Heating Network system based on SSS clutches |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503608A (en) * | 2020-11-24 | 2021-03-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Raw water heating system of thermal power plant and control method thereof |
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2017
- 2017-07-31 CN CN201720947616.9U patent/CN207179770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503608A (en) * | 2020-11-24 | 2021-03-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Raw water heating system of thermal power plant and control method thereof |
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