CN207847715U - A kind of water cooling Steam Turbine exhaust steam residual heat recycling heating system - Google Patents
A kind of water cooling Steam Turbine exhaust steam residual heat recycling heating system Download PDFInfo
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- CN207847715U CN207847715U CN201721724347.6U CN201721724347U CN207847715U CN 207847715 U CN207847715 U CN 207847715U CN 201721724347 U CN201721724347 U CN 201721724347U CN 207847715 U CN207847715 U CN 207847715U
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Abstract
A kind of water cooling Steam Turbine exhaust steam residual heat recycling heating system, including steam turbine and corresponding condenser, using steam exhaust extraction system, on condenser or turbine discharge pipeline trepanning steam exhaust is extracted, be pipelined to and increase steam turbine steam exhaust and recycle heating system；It includes increasing steam turbine, increasing steam turbine condenser to increase steam turbine steam exhaust to recycle heating system；Absorption or compression type heat heat pump heating system includes absorption or compression type heat pump assembly, and heat pump unit power steam system connects Steam Turbine Through IP Admission steam discharge；Increase steam turbine steam exhaust to recycle heating system and the interconnection of absorption or compression type heat heat pump heating system while accessing heating network；High efficiente callback utilizes thermal power plant's water cooling exhaust steam in steam turbine waste heat, improves steam exhaust utilization, improves heat capacity, farthest reduces cold end loss, realizes that energy-saving benefit maximizes.
Description
Technical field
The utility model belongs to power plant for energy conservation field, and in particular to it is a kind of based on increase steam turbine water cooling Steam Turbine steam exhaust more than
Recuperation of heat heating system.
Background technology
It is well known that the actual thermal efficiency of large thermal power plant is generally only 40% or so, the heat lost by cold end steam exhaust
Amount accounts for 50% or so.Therefore exhaust steam in steam turbine waste heat is recycled, cold end loss is reduced, is most in power plant for energy conservation emission reduction field
It is potential.For air cooling unit, since steam turbine operation back pressure is higher, when Winter heat supply, based on the Steam Turbine for increasing steam turbine
Exhaust steam residual heat recycles heating system and is relatively easy structure.Power plant steam turbine is recycled using steam turbine (also referred to as jet type heat pump) is increased
Exhaust steam residual heat heat supply has had many successful applications in air cooling unit.For water chiller, due to steam turbine operation back pressure
Smaller, when Winter heat supply, heating system is recycled based on the Steam Turbine exhaust steam residual heat for increasing steam turbine " relatively difficult structure.China
Water chiller be all more than air cooling unit either in single machine quantity or in installed capacity in terms of undertaking central heating,
If can be widely applied in water cooling Steam Turbine based on the Steam Turbine exhaust steam residual heat recycling heating system for increasing steam turbine,
All will be very huge no matter from technological progress, energy-saving and emission-reduction, flexibility peak regulation, economic benefit, social benefit etc..
For steam power plant's heat network system, heat supply network return water temperature is generally at 40-50 DEG C.In the deeply cold phase, return water temperature is generally big
In equal to 50 DEG C.If it is intended to recycling water cooling Steam Turbine exhaust steam residual heat, is used for heat supply, needs steam exhaust heat transfer to heat supply network
Inside return water, heating heat supply network return water is removed with steam exhaust.Since steam exhaust is negative pressure, condenser can only be used as heating equipment.By steam exhaust
It is discharged into condenser shell-side, heat supply network return water enters condenser tube side.Steam exhaust heat is to heat supply network Water transport.
Return water temperature is high, it is desirable that the steam exhaust pressure and temperature for being discharged into condenser is also just high, otherwise, can not heat heat supply network and return
Water.For example, 50 DEG C of heat supply network return water temperature.If the heat of steam exhaust can pass into hot net water, must have corresponding temperature difference,
Wen Sheng and terminal temperature difference.It is assumed that heat supply network return water temperature rise 1 DEG C, 2.8 DEG C of heat supply network condenser terminal difference, then exhaust steam in steam turbine temperature be equal to
50+1+2.8=53.8 DEG C.The corresponding vapo(u)rous pressure 14.88KPa.a of this temperature.That is, if recycling steamer
Machine steam exhaust, is used for heat supply, and steam turbine operation back pressure minimum value is 15KPa.a.At this point, steam exhaust recycles efficiency and steam exhaust profit
Dosage is poor.Under normal circumstances, this back pressure value should >=20KPa.a is both economical.
It realizes and recycles exhaust steam in steam turbine, be used for heat supply, there is following several directions：First, reduce heat supply network return water temperature.
Absorption heat pump can accomplish to reduce heat supply network return water temperature, meanwhile, the energy of entire heat network system is not caused to waste again.It is inhaling
In receipts formula heat pump, recirculated water has two-way, is to take hot (cooling) recirculated water all the way, is to be heated (heating) recirculated water all the way.Wherein
Recirculated water for taking hot (cooling), after absorption type heat pump assembly, water temperature will reduce.Increase steam turbine (also referred to as jet type heat pump)
Need heat supply network return water temperature low；After absorption type heat pump assembly, water temperature just may be implemented to reduce heat supply network return water.Second, it carries
High steam exhaust pressure (i.e. steam turbine operation back pressure).1, steam turbine operation back pressure is directly raised.It is admissible suitably to raise, no
More than alarm back pressure (18.6KPa.a), also all there is no problem for exhaust stage blade strength vibration aspect.But back pressure raise it is unsuitable
Excessively.2, using steam turbine (also referred to as jet type heat pump) is increased, injection steam exhaust improves steam exhaust pressure.Operation back pressure suitably is raised, such as
After being raised to 8-10KPa.a, using steam turbine (also referred to as jet type heat pump) is increased, it is weary to consume row's steam progress injection in sub-fraction
Steam exhaust pressure is lifted to about 20KPa.a, can obtain good performance driving economy by vapour.
If absorption heat pump can be effectively combined with steam turbine (also referred to as jet type heat pump) is increased, the excellent of the two is played
Gesture can be solved based on the applicable sex chromosome mosaicism for increasing the Steam Turbine exhaust steam residual heat recycling heating system of steam turbine on water chiller,
And it is widely applied in water cooling Steam Turbine.
Utility model content
The purpose of this utility model is that high efficiente callback utilizes steam turbine of thermal power plant exhaust steam residual heat, it is weary to provide a kind of thermal power plant
Vapour waste heat recovery heating system.
A kind of water cooling Steam Turbine exhaust steam residual heat recycling heating system, including steam turbine and corresponding condenser, steam exhaust are drawn
System increases steam turbine steam exhaust recycling heating system, absorption or compression type heat heat pump heating system；It is characterized in that：Using weary
Vapour extraction system, on condenser or turbine discharge pipeline trepanning steam exhaust is extracted, be pipelined to increase steam turbine it is weary
Vapour recycles heating system；It includes increasing steam turbine, increasing steam turbine condenser to increase steam turbine steam exhaust to recycle heating system；It is absorption or
Compression type heat heat pump heating system includes absorption or compression type heat pump assembly, and heat pump unit power steam system connects in steam turbine
Cylinder pressure steam discharge；Increase steam turbine steam exhaust to recycle heating system and the interconnection of absorption or compression type heat heat pump heating system while connecing
Enter heating network.
Further, it further includes heat exchangers for district heating to increase steam turbine steam exhaust to recycle heating system；The heat supply network of heating network follows
Ring water lines supply water after Multi-stage heating to heat supply network by increasing steam turbine condenser and heat exchangers for district heating, heat supply network recirculated water successively.
Further, Steam Turbine Through IP Admission steam discharge connecting line is to heat exchangers for district heating.
Further, condenser includes two groups of tube banks, and what is wherein flowed in first tube bundle is recirculated cooling water, second tube bundle
In flow be by hot net water bye-pass come part hot net water；Heat supply network circulating water line divides two-way, hot net water main line to connect
Increasing steam turbine condenser is connect, hot net water bye-pass connects the water inlet that puts hot water of heat pump unit release end of heat, and heat pump unit puts hot water out
The mouth of a river connects condenser second tube bundle water inlet；Condenser second tube bundle water outlet connects hot net water main line.
Further, hot net water main line access increases steam turbine condenser water inlet, increases steam turbine condenser water outlet and is connected to
Heat exchangers for district heating water inlet；Heat exchangers for district heating shell-side connects Steam Turbine Through IP Admission steam discharge；Increase steam turbine condenser water outlet and is also connected with heat
The healed water water inlet of pump assembly heat absorbing end, the healed water water outlet connection heat exchangers for district heating water inlet of heat pump unit heat absorbing end
Mouthful.
Further, the intake-outlet pipeline of the power steam pipeline of heat pump, heat pump end and release end of heat, increasing steam turbine are solidifying
It is equipped with valve on pipeline between vapour device and heat exchangers for district heating, putting into operation or closing for realizing heat pump system.
Further, steam exhaust recycles in heating system and is provided with increasing steam turbine, Steam Turbine Through IP Admission steam discharge connecting line
To the power steam entrance for increasing steam turbine；The connection of steam exhaust fairlead increases the suction steam ports of steam turbine；The steam drain for increasing steam turbine is connected to increasing
Steam turbine condenser.
Further, increase that steam turbine condenser condensed water, heat pump power steam is hydrophobic, heat exchangers for district heating is hydrophobic accesses power plant
Condensate system.
Through the above technical solutions, steam turbine dead steam recovery system and absorption or compression will be increased by being realized in water chiller
Heat pump system is combined, and plays the advantage of the two so that entire therrmodynamic system parameter matching is most reasonable, and the method for operation is best, carries
High steam exhaust utilization improves heat capacity, farthest reduces cold end loss, realizes that energy-saving benefit maximizes.
Description of the drawings
Fig. 1 is a kind of based on the water cooling Steam Turbine exhaust steam residual heat recycling heating system schematic diagram for increasing steam turbine；
Wherein 1 steam turbine, 2 condensers, 3 steam exhaust extraction systems, 4 increasing steam turbines, 5 increasing steam turbine condensers, 6 heat pumps, 7 heat supply networks add
Hot device, 8 condenser circulating water systems, 9 heat supply network return water, 10 water-cooling towers, 11 heat supply networks supply water, arrange steam, 13 steam valves, 14 water in 12
Valve.
Specific implementation mode
1 pair of the utility model is further described below in conjunction with the accompanying drawings, it should be understood that content described herein is only used for
Description and interpretation the utility model is not used to limit the utility model.
Embodiment one：
The installation of certain power plant is 2 300MW grades of units, wherein the steam exhaust of a steam turbine is recycled.
Steam Turbine uses water-cooling pattern.
Heating system is recycled in thermal power plant's steam exhaust, including steam turbine and corresponding condenser, steam exhaust extraction system increase steam turbine steam exhaust
Recycle heating system, absorption or compression type heat heat pump heating system；
Steam turbine operation back pressure is positioned into 10.5KPa.a.46.8 DEG C of corresponding saturation temperature.Steam exhaust is by increasing steam turbine boosting
To 21KPa.a (increasing 165 DEG C of steam turbine exhaust temperature, 61.1 DEG C of the corresponding saturation temperatures of 21KPa.a).Middle row's steam parameter
0.3MPa.a, 233 DEG C.
Using steam exhaust extraction system, from trepanning on turbine condenser or turbine discharge pipeline, by the weary of Steam Turbine
Vapour extracts, and is conveyed by steam exhaust fairlead.Steam exhaust extraction system includes that special parts are drawn in steam exhaust, pipeline is drawn in steam exhaust；Steam exhaust
It draws special parts to be fixedly installed on condenser throat side, steam exhaust is drawn is arranged steam exhaust on throat's side plate that special parts are surrounded
Reinforcement structure is arranged in the condenser throat side inside of fairlead, trepanning, and steam exhaust deflector is arranged on the inside of steam exhaust fairlead；Steam exhaust
Fairlead is equipped with control valve.Steam exhaust extraction system is to extract turbine discharge from condenser, and control steam exhaust is discharged into condensing
The amount of device.
Increase steam turbine steam exhaust and recycle heating system, including increases steam turbine, increases steam turbine condenser, heat exchangers for district heating, hot net water
System, mating piping (including pipeline, valve, pipe fitting, suspension and support, expansion joint etc.).
Increasing steam turbine, Steam Turbine Through IP Admission steam discharge connecting line to the work for increasing steam turbine are provided in steam exhaust recycling system
(power) steam inlet；The connection of steam exhaust fairlead increases the suction steam ports of steam turbine；The steam drain for increasing steam turbine is connected to increasing steam turbine condensing
Device；Heat exchangers for district heating water outlet access heating network.
It is adjustable increasing steam turbine to increase steam turbine, can also be unadjustable increasing steam turbine.
Steam Turbine Through IP Admission steam discharge is also connected with pipeline to heat exchangers for district heating.
The heat supply network circulating water line of heat supply network water system is successively by increasing steam turbine condenser, heat exchangers for district heating, heat supply network recirculated water
It supplies water to heat supply network after Multi-stage heating.
Absorption or compression type heat heat pump heating system, including absorption or compression type heat pump assembly；It is arranged in heat pump unit
There is put hot water water inlet, heat pump unit of corresponding heat pump unit to put hot water water outlet for release end of heat and heat absorbing end, release end of heat, heat absorption
End is with heat pump unit healed water water inlet, heat pump unit healed water water outlet, heat pump unit also with power steam system
System.Hot net water return water enters absorption or compression type heat pump assembly release end of heat, as heat pump exothermic medium.
Heat pump unit power steam system connects Steam Turbine Through IP Admission steam discharge；Absorption type heat pump assembly is using lithium bromide warm
Pump, power steam come from Steam Turbine Through IP Admission steam discharge；Compression type heat pump assembly uses small turbine drive compressor, power steam
From Steam Turbine Through IP Admission steam discharge；
Condenser includes two groups of tube banks, and what is wherein flowed in first tube bundle is recirculated cooling water, is had a style of one's own, independent to transport
Row, by adjusting circulating water flow come adjusting control turbine back pressure.What is flowed in second tube bundle is to come from heat pump unit heat release
The heat release temperature-reducing medium (flow 3000t/h, 37.1 DEG C of inlet water temperature) at end, i.e., by hot net water bye-pass come part heat supply network
Water is 43.8 DEG C from condenser leaving water temperature；
The heat supply network circulating water line of heat supply network water system divides two-way, the connection of hot net water main line to increase steam turbine condenser, hot net water
Bye-pass first connects the water inlet that puts hot water of heat pump unit release end of heat, and the heat pump unit water outlet connection condenser second that puts hot water is managed
Beam water inlet；Condenser second tube bundle water outlet reconnects hot net water main line.
The access of hot net water main line increases steam turbine condenser water inlet, increases steam turbine condenser water outlet and is connected to heat exchangers for district heating
Water inlet.Heat exchangers for district heating shell-side connects Steam Turbine Through IP Admission steam discharge.
Increase the healed water water inlet that steam turbine condenser water outlet is also connected with heat pump unit heat absorbing end, heat pump unit heat absorbing end
Healed water water outlet connect heat exchangers for district heating water inlet；In addition increasing steam turbine condenser water outlet and heat exchangers for district heating water inlet
It is equipped with water path valve between mouthful, by valve opening and closing switching control heat supply network water flowing, realizes that heat pump unit puts into operation or closes.
Hot net water system operation flow is as follows：Temperature 50 C hot net water (flow 10000t/h) return water heat supply network return water is divided into two
Road, all the way (flow 3000t/h) into heat supply network return branch road, as the temperature-reducing medium of heat pump release end of heat, temperature is reduced to 37.1 DEG C,
The second tube bundle of condenser is entered back into, temperature is upgraded to 43.8 DEG C, another way heat supply network backwater main pipeline (flow 7000t/h, temperature 50
DEG C) converge with condenser second tube bundle water outlet (water that 43.8 DEG C of temperature) after (flow is whole heat supply network water flow 10000t/h, temperature
48.1 DEG C of degree), into steam turbine condenser pipe side is increased, temperature is upgraded to 60.6 DEG C；Then, absorption type heat pumping is accessed as heat-absorbing medium
Hot junction, temperature rise to 75 DEG C by 60.6 DEG C；Then heat exchangers for district heating pipe side is accessed again, is completed whole heating processes, is reached certain
98 DEG C of temperature, is sent to city planting ductwork；
Increase steam turbine, heat pump, heat exchangers for district heating power steam be all middle row's steam, be adjusted by vapour road valve；
The power steam pipeline of heat pump, increases steam turbine condenser and heat at the intake-outlet pipeline at heat pump end and release end of heat
Water route or vapour road valve, putting into operation or closing for realizing heat pump system are equipped between net heater on pipeline.
Increasing steam turbine condenser condensed water, heat pump power steam is hydrophobic, heat exchangers for district heating is hydrophobic, and it is existing solidifying to access power plant
Bear water system, conveying condensed water to Steam Turbine Regenerative System；
Finally it should be noted that：The foregoing is merely the explanations of the utility model, are not intended to limit the utility model, to the greatest extent
The utility model is described in detail in pipe, for those skilled in the art, can still be remembered to aforementioned
The technical solution of load is modified or equivalent replacement of some of the technical features.All spirit in the utility model
Within principle, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of water cooling Steam Turbine exhaust steam residual heat recycles heating system, including system is drawn in steam turbine and corresponding condenser, steam exhaust
System increases steam turbine steam exhaust recycling heating system, absorption or compression type heat heat pump heating system；It is characterized in that：Utilize steam exhaust
Extraction system, on condenser or turbine discharge pipeline trepanning steam exhaust is extracted, be pipelined to increase steam turbine steam exhaust
Recycle heating system；It includes increasing steam turbine, increasing steam turbine condenser to increase steam turbine steam exhaust to recycle heating system；Absorption or pressure
Contracting formula heat pump heat distribution system includes absorption or compression type heat pump assembly, is pressed in heat pump unit power steam system connection steam turbine
Cylinder steam discharge；Increase steam turbine steam exhaust to recycle heating system and the interconnection of absorption or compression type heat heat pump heating system while accessing
Heating network.
2. water cooling Steam Turbine exhaust steam residual heat according to claim 1 recycles heating system, which is characterized in that it is weary to increase steam turbine
It further includes heat exchangers for district heating that vapour, which recycles heating system,；The heat supply network circulating water line of heating network is successively by increasing steam turbine condensing
Device and heat exchangers for district heating, heat supply network recirculated water supply water after Multi-stage heating to heat supply network.
3. water cooling Steam Turbine exhaust steam residual heat according to claim 2 recycles heating system, which is characterized in that in steam turbine
Cylinder pressure steam discharge connecting line is to heat exchangers for district heating.
4. water cooling Steam Turbine exhaust steam residual heat according to claim 2 recycles heating system, which is characterized in that condenser packet
Containing two groups of tube banks, what is wherein flowed in first tube bundle is recirculated cooling water, and what is flowed in second tube bundle is by hot net water branch pipe
The part hot net water that road is come；Heat supply network circulating water line divides two-way, the connection of hot net water main line to increase steam turbine condenser, hot net water branch pipe
Road connect heat pump unit release end of heat the water inlet that puts hot water, heat pump unit put hot water water outlet connection condenser second tube bundle water inlet
Mouthful；Condenser second tube bundle water outlet connects hot net water main line.
5. water cooling Steam Turbine exhaust steam residual heat according to claim 4 recycles heating system, which is characterized in that hot net water master
Pipeline access increases steam turbine condenser water inlet, increases steam turbine condenser water outlet and is connected to heat exchangers for district heating water inlet；Heat supply network heats
Device shell-side connects Steam Turbine Through IP Admission steam discharge；Increase the healed water water inlet that steam turbine condenser water outlet is also connected with heat pump unit heat absorbing end
Mouthful, the healed water water outlet of heat pump unit heat absorbing end connects heat exchangers for district heating water inlet.
6. water cooling Steam Turbine exhaust steam residual heat according to claim 5 recycles heating system, which is characterized in that heat pump moves
The intake-outlet pipeline of power steam pipework, heat pump end and release end of heat increases pipeline between steam turbine condenser and heat exchangers for district heating
On be equipped with valve, putting into operation or closing for realizing heat pump system.
7. water cooling Steam Turbine exhaust steam residual heat according to claim 2 recycles heating system, which is characterized in that steam exhaust is recycled
Using increasing steam turbine is provided in heating system, Steam Turbine Through IP Admission steam discharge connecting line extremely increases the power steam entrance of steam turbine；It is weary
The connection of vapour fairlead increases the suction steam ports of steam turbine；The steam drain for increasing steam turbine is connected to increasing steam turbine condenser.
8. water cooling Steam Turbine exhaust steam residual heat according to claim 7 recycles heating system, which is characterized in that it is solidifying to increase steam turbine
Vapour device condensed water, heat pump power steam are hydrophobic, the hydrophobic condensate system for accessing power plant of heat exchangers for district heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721724347.6U CN207847715U (en) | 2017-12-13 | 2017-12-13 | A kind of water cooling Steam Turbine exhaust steam residual heat recycling heating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721724347.6U CN207847715U (en) | 2017-12-13 | 2017-12-13 | A kind of water cooling Steam Turbine exhaust steam residual heat recycling heating system |
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| CN207847715U true CN207847715U (en) | 2018-09-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035779A (en) * | 2017-12-13 | 2018-05-15 | 联合瑞升（北京）科技有限公司 | A kind of water cooling Steam Turbine exhaust steam residual heat recycles heating system |
-
2017
- 2017-12-13 CN CN201721724347.6U patent/CN207847715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035779A (en) * | 2017-12-13 | 2018-05-15 | 联合瑞升（北京）科技有限公司 | A kind of water cooling Steam Turbine exhaust steam residual heat recycles heating system |
| CN108035779B (en) * | 2017-12-13 | 2024-03-12 | 联合瑞升（北京）科技有限公司 | Waste steam and waste heat recovery heat supply system of water-cooling steam turbine unit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Water cooled steam turbine unit dead steam waste heat recovery heat supply system Effective date of registration: 20200114 Granted publication date: 20180911 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: UNI-RISING (BEIJING) TECHNOLOGY Co.,Ltd. Registration number: Y2020990000056 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230811 Granted publication date: 20180911 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: UNI-RISING (BEIJING) TECHNOLOGY Co.,Ltd. Registration number: Y2020990000056 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |