CN206801628U - Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system - Google Patents
Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system Download PDFInfo
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- CN206801628U CN206801628U CN201720512144.4U CN201720512144U CN206801628U CN 206801628 U CN206801628 U CN 206801628U CN 201720512144 U CN201720512144 U CN 201720512144U CN 206801628 U CN206801628 U CN 206801628U
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- 238000011084 recovery Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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]
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Abstract
A kind of condensing turbine low pressure (LP) cylinder cooling and small turbine exhaust steam heat recovery system,Including Steam Turbine Through IP Admission,Turbine low pressure cylinder,Steam jet ejector and primary calorifier,The Steam Turbine Through IP Admission discharge duct of Steam Turbine Through IP Admission is connected by pipeline and the steam inlet of the first shut-off valve and turbine low pressure cylinder,The power steam entrance of steam jet ejector is connected by pipeline and the 3rd shut-off valve with Steam Turbine Through IP Admission discharge duct,The pump orifice of steam jet ejector is connected by pipeline and the 6th shut-off valve with small turbine exhaust steam pipeline,The jet of steam jet ejector is connected by pipeline all the way and the steam inlet of the 4th shut-off valve and turbine low pressure cylinder,The jet of steam jet ejector is connected by another way pipeline and the vapour side entrance of the 5th shut-off valve and primary calorifier,The water side entrance of primary calorifier is connected by pipeline with heat supply network water return pipeline.The utility model can effectively utilize small turbine exhaust steam, reduce the thermal source loss of exhaust steam, and solve low pressure (LP) cylinder cooling problem.
Description
Technical field
It the utility model is related to a kind of heating system technical field of power plant's cogeneration units, and in particular to a kind of condensing
Formula turbine low pressure cylinder cools down and small turbine exhaust steam heat recovery system.
Background technology
After power plant's heat supply optical axis transformation, low pressure (LP) cylinder uses birotor interchangeabling form, and non-heating period still uses former unit low pressure
Rotor, low pressure (LP) cylinder are run in the form of pure condensate；Heat supply period low pressure rotor uses optical axis rotor, only plays connection function, low pressure (LP) cylinder is not
Work done generates electricity, and low pressure (LP) cylinder dividing plate is then removed standby.Shut-off valve is installed additional on mesolow cross over pipe, for controlling low pressure (LP) cylinder air inlet
Amount, ensures heat supply vapour；Extraction line all the way is picked out again, is extracted intermediate pressure cylinder steam discharge out, is utilized Steam Turbine Through IP Admission steam discharge heat supply.
However, after low pressure (LP) cylinder changes optical axis heat supply into, due to depth peak regulation, load is larger, must in order to ensure heat supply pressure
Intermediate pressure cylinder steam discharge must progressively be turned down to the shut-off valve of low pressure (LP) cylinder, or even Close All.So that will be low without cooling steam in low pressure (LP) cylinder
Rotor is pressed to produce air blast friction, serious threat unit safety.Meanwhile small waste steam latent heat of turbine can not in cogeneration units
Utilization is recycled, causes to waste.
The content of the invention
The purpose of this utility model is to overcome the shortcomings of the prior art, there is provided a kind of condensing turbine low pressure
Cylinder cools down and small turbine exhaust steam heat recovery system, and it can effectively utilize small turbine exhaust steam, reduces the latent heat damage of exhaust steam
Lose, reduce consumption of the heat exchangers for district heating to intermediate pressure cylinder steam discharge, and can be to steam turbine low-pressure after low pressure (LP) cylinder changes optical axis heat supply into
Cylinder is preferably cooled down.
The utility model is achieved through the following technical solutions：A kind of condensing turbine low pressure (LP) cylinder cooling and small steamer
Machine exhaust steam heat recovery system, including Steam Turbine Through IP Admission and turbine low pressure cylinder, in the steam turbine of the Steam Turbine Through IP Admission
Cylinder pressure discharge duct is connected by pipeline and the first shut-off valve with the steam inlet of the turbine low pressure cylinder, in addition to steam spray
Emitter and primary calorifier, the power steam entrance of the steam jet ejector pass through pipeline and the 3rd shut-off valve and the steam turbine
Intermediate pressure cylinder discharge duct connects, and the pump orifice of the steam jet ejector passes through pipeline and the 6th shut-off valve and small turbine exhaust steam pipe
Road connects, and the jet of the steam jet ejector passes through pipeline all the way and the steam of the 4th shut-off valve and the turbine low pressure cylinder
Entrance connects, and the jet of the steam jet ejector passes through another way pipeline and the vapour of the 5th shut-off valve and the primary calorifier
Side entrance is connected, and the water side entrance of the primary calorifier is connected by pipeline with heat supply network water return pipeline.
Also include peak load calorifier, the water side entrance of the peak load calorifier passes through pipeline and the water of the primary calorifier
Side outlet is connected, and the water side outlet of the peak load calorifier is connected by pipeline with heat supply network water supply line, the peak load calorifier
Vapour side entrance be connected by pipeline and the second shut-off valve with the Steam Turbine Through IP Admission discharge duct.
Also include condenser hotwell, the vapour side outlet of the peak load calorifier passes through pipeline and the first drain valve and the base
The vapour side connection of this heater, the hydrophobic outlet of the primary calorifier are coagulated by pipeline, water seal and the second drain valve with described
Vapour device hot well connects, and the exhaust of the turbine low pressure cylinder enters the condenser hotwell by pipeline, and the condenser passes through
Pipeline and balanced valve are connected with the vapour side of the primary calorifier.
Heat supply network circulation is provided with pipeline between the water side entrance of the primary calorifier and the heat supply network water return pipeline
Pump.
The beneficial effects of the utility model are：1）Under normal circumstances, small steam turbine exhaust steam temperature is steamed all below 50 DEG C
Vapour injector exhaust temperature is between 60 DEG C -90 DEG C, and lower than low pressure (LP) cylinder original throttle (steam) temperature is more, thus the utility model is to low pressure
The cooling effect of cylinder is more preferable.2）Due to small turbine exhaust steam is used for into heat supply, reduce the cold source energy of exhaust steam so that this practicality
The novel system thermal efficiency is higher, while decreases consumption of the heat exchangers for district heating to intermediate pressure cylinder steam discharge, improves the heat warp of power plant
Ji property.3）Tthe utility model system is simple, easy to operate, does not increase rotating machinery, saving electric consumption, can also realize suitable
Control, securely and reliably.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：The shut-off valves of 1- first；The shut-off valves of 2- second；The shut-off valves of 3- the 3rd；The shut-off valves of 4- the 4th；5- the 5th is turned off
Valve；The shut-off valves of 6- the 6th；7- balanced valves；The drain valves of 8- first；The drain valves of 9- second；10- steam jet ejectors；11- is heated substantially
Device；12- peak load calorifiers；13- pumps for hot water supply net；HP- steam turbine high-pressure cylinders；IP- Steam Turbine Through IP Admissions；LP- steam turbine low-pressures
Cylinder；CDSR- condenser hotwells；A- heat supply network water return pipelines；B- heat supply network water supply lines；C- small turbine exhaust steam pipelines；D- steam turbines
Intermediate pressure cylinder discharge duct.
Embodiment
The utility model is described in detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of condensing turbine low pressure (LP) cylinder cooling and small turbine exhaust steam heat recovery system, including vapour
Turbine intermediate pressure cylinder IP and turbine low pressure cylinder LP, Steam Turbine Through IP Admission IP Steam Turbine Through IP Admission discharge duct D by pipeline and
First shut-off valve 1 is connected with turbine low pressure cylinder LP steam inlet, in addition to steam jet ejector 10 and primary calorifier 11, is steamed
The power steam entrance of vapour injector 10 is connected by pipeline and the 3rd shut-off valve 3 with Steam Turbine Through IP Admission discharge duct D, steam
The pump orifice of injector 10 is connected by pipeline and the 6th shut-off valve 6 with small turbine exhaust steam pipeline C, the spray of steam jet ejector 10
Loophole is connected by pipeline all the way and the 4th shut-off valve 4 with turbine low pressure cylinder LP steam inlet, the spray of steam jet ejector 10
Loophole is connected by another way pipeline and the 5th shut-off valve 5 with the vapour side entrance of primary calorifier 11, the water of primary calorifier 11
Side entrance is connected by pipeline with heat supply network water return pipeline A.
During work, intermediate pressure cylinder steam discharge is guided into steam jet ejector 10, as power steam, extracts feed pump small turbine row
Vapour exhaust steam, by small turbine exhaust steam inspiration steam jet ejector 10, as jetting steam caused, the heat of urban heating system is sent to after boosting
The primary calorifier 11 of initial station is netted, urban heating system backwater is heated, is recycled small turbine exhaust steam latent heat, greatly carries
The thermal efficiency of cycle of high power plant.
After low pressure (LP) cylinder changes optical axis heat supply into, due to depth peak regulation, load is larger, in order to ensure heat supply pressure, it is necessary to by
Step turns down the first shut-off valve 1, or even Close All.Now, the 4th shut-off valve 4 is opened, the steam discharge of steam jet ejector 10 is introduced low
Cylinder pressure, optical axis is cooled down.Because small turbine exhaust steam temperature is relatively low, there was only 40-60 DEG C when normal, cooling effect is than other
Vapour source is more preferable, and is to utilize small turbine exhaust steam, and energy-saving effect becomes apparent from.In order to ensure that low pressure (LP) cylinder cools down, can suitably adjust
Whole steam jet ejector 10 increases the steam flow for leading to low pressure (LP) cylinder to the aperture of the 4th shut-off valve 4 of low pressure (LP) cylinder.
Referring to Fig. 1, the utility model also includes peak load calorifier 12, the water side entrance of peak load calorifier 12 by pipeline with
The water side outlet connection of primary calorifier 11, the water side outlet of peak load calorifier 12 are connected by pipeline with heat supply network water supply line B,
The vapour side entrance of peak load calorifier 12 is connected by pipeline and the second shut-off valve 2 with Steam Turbine Through IP Admission discharge duct D.
When 11 underheat of primary calorifier, the second shut-off valve 2 is opened, hot water temperature is further improved, to make up base
The underheat of this heater 11, meet urban heat supplying peak needs.The hydrophobic of peak load calorifier 12 flow to primary calorifier certainly
11 vapour side space, with primary calorifier 11 it is hydrophobic mix after, entered by the water seal of U-shaped in condenser CDSR hot wells, returned
Knock off matter.
Referring to Fig. 1, the utility model also includes condenser hotwell CDSR, and the vapour side outlet of peak load calorifier 12 passes through pipeline
And first drain valve 8 be connected with the vapour side of primary calorifier 11, the hydrophobic outlet of primary calorifier 11 passes through pipeline, water seal and
Two drain valves 9 are connected with condenser hotwell CDSR, and turbine low pressure cylinder LP hydrophobic outlet passes through pipeline and condenser hotwell
CDSR connections, condenser CDSR are connected by pipeline and balanced valve 7 with the vapour side of primary calorifier 11.
Under heat supply running mode, condenser CDSR keeps negative pressure operation, and low pressure potting vapour also puts into operation, in low pressure (LP) cylinder
Same to keep negative pressure, small steam turbine exhaust steam can enter vapour after the boosting of steam jet ejector 10 by main steam turbine low pressure (LP) cylinder LP
Pipe, enters condenser hotwell CDSR, low pressure (LP) cylinder is cooled down.As long as the temperature of steam jet ejector jet is than heat supply network backwater
Temperature is high, it is possible to which backwater is heated., will be hydrophobic logical and heat exchangers for district heating can be connected to condenser CDSR with steam equalizing pipe
Cross U-shaped water seal and return to hot well.
Heat supply network is provided with referring to Fig. 1, on the pipeline between the water side entrance of primary calorifier 11 and heat supply network water return pipeline A to follow
Ring pump 13.Steam turbine has two low pressure (LP) cylinders in Fig. 1, also includes steam turbine in respectively low pressure (LP) cylinder LP1 and low pressure (LP) cylinder LP2, Fig. 1
High pressure cylinder HP and intermediate pressure cylinder IP.
Finally it should be noted that above content is only illustrating the technical solution of the utility model, rather than to this practicality
The limitation of novel protected scope, simple modification that one of ordinary skill in the art is carried out to the technical solution of the utility model or
Person's equivalent substitution, all without departing from the spirit and scope of technical solutions of the utility model.
Claims (4)
1. a kind of cooling of condensing turbine low pressure (LP) cylinder and small turbine exhaust steam heat recovery system, including Steam Turbine Through IP Admission and
Turbine low pressure cylinder, the Steam Turbine Through IP Admission discharge duct of the Steam Turbine Through IP Admission by pipeline and the first shut-off valve with it is described
The steam inlet connection of turbine low pressure cylinder, it is characterised in that：Also include steam jet ejector and primary calorifier, the steam spray
The power steam entrance of emitter is connected by pipeline and the 3rd shut-off valve with the Steam Turbine Through IP Admission discharge duct, the steam
The pump orifice of injector is connected by pipeline and the 6th shut-off valve with small turbine exhaust steam pipeline, the injection of the steam jet ejector
Mouth is connected by pipeline all the way and the 4th shut-off valve with the steam inlet of the turbine low pressure cylinder, the spray of the steam jet ejector
Loophole is connected by another way pipeline and the 5th shut-off valve with the vapour side entrance of the primary calorifier, the primary calorifier
Water side entrance is connected by pipeline with heat supply network water return pipeline.
2. condensing turbine low pressure (LP) cylinder cooling according to claim 1 and small turbine exhaust steam heat recovery system, its
It is characterised by：Also include peak load calorifier, the water side entrance of the peak load calorifier passes through pipeline and the primary calorifier
Water side outlet is connected, and the water side outlet of the peak load calorifier is connected by pipeline with heat supply network water supply line, the spike heating
The vapour side entrance of device is connected by pipeline and the second shut-off valve with the Steam Turbine Through IP Admission discharge duct.
3. condensing turbine low pressure (LP) cylinder cooling according to claim 2 and small turbine exhaust steam heat recovery system, its
It is characterised by：Also include condenser hotwell, the vapour side outlet of the peak load calorifier by pipeline and the first drain valve with it is described
The vapour side connection of primary calorifier, the hydrophobic outlet of the primary calorifier by pipeline, water seal and the second drain valve with it is described
Condenser hotwell connects, and the exhaust of the turbine low pressure cylinder enters the condenser hotwell by pipeline, and the condenser leads to
Piping and balanced valve are connected with the vapour side of the primary calorifier.
4. condensing turbine low pressure (LP) cylinder cooling according to claim 3 and small turbine exhaust steam heat recovery system, its
It is characterised by：Heat supply network circulation is provided with pipeline between the water side entrance of the primary calorifier and the heat supply network water return pipeline
Pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720512144.4U CN206801628U (en) | 2017-05-10 | 2017-05-10 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720512144.4U CN206801628U (en) | 2017-05-10 | 2017-05-10 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN206801628U true CN206801628U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720512144.4U Active CN206801628U (en) | 2017-05-10 | 2017-05-10 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
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| CN (1) | CN206801628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503809A (en) * | 2017-05-10 | 2017-12-22 | 程琛 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
| CN108506057A (en) * | 2018-03-01 | 2018-09-07 | 华电电力科学研究院有限公司 | A kind of co-generation unit and adjusting method for cutting off low pressure (LP) cylinder into vapour |
-
2017
- 2017-05-10 CN CN201720512144.4U patent/CN206801628U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503809A (en) * | 2017-05-10 | 2017-12-22 | 程琛 | Condensing turbine low pressure (LP) cylinder cools down and small turbine exhaust steam heat recovery system |
| CN108506057A (en) * | 2018-03-01 | 2018-09-07 | 华电电力科学研究院有限公司 | A kind of co-generation unit and adjusting method for cutting off low pressure (LP) cylinder into vapour |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180326 Address after: 201802, No. 4268, No. 2396 South Main Road, Shanghai, Jiading District. A Patentee after: SHANGHAI SURFER ELECTRIC TECHNOLOGY CO.,LTD. Address before: Anhui province Huainan city 232000 National Road, tianjia'an District Village striker 22-1-8 room Patentee before: Cheng Chen |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231024 Address after: 5 / F, 277 Huqingping Road, Minhang District, Shanghai, 201105 Patentee after: BOCO (Shanghai) Power Engineering Control Co.,Ltd. Address before: 201802 No. 2396 A District, 4268 Zhen Nan Road, Jiading District, Shanghai. Patentee before: SHANGHAI SURFER ELECTRIC TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |