CN108644758A - A kind of big temperature-difference central heating system of double condensers - Google Patents
A kind of big temperature-difference central heating system of double condensers Download PDFInfo
- Publication number
- CN108644758A CN108644758A CN201810283392.5A CN201810283392A CN108644758A CN 108644758 A CN108644758 A CN 108644758A CN 201810283392 A CN201810283392 A CN 201810283392A CN 108644758 A CN108644758 A CN 108644758A
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- CN
- China
- Prior art keywords
- steam
- water
- condenser
- level
- exhaust
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/34—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines and returning condensate to boiler with main feed supply
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to a kind of big temperature-difference central heating system of double condensers, involved system and device is made of steam turbine, level-one condenser, two level condenser, vapor-water heat exchanger, big temperature difference heat-exchange system and various water pumps and pipeline.Systems abandon traditional cooling tower, using double condenser cascaded structures, level-one condenser absorbs exhaust steam residual heat, carries out condensation cooling to steam exhaust, the condensed water formed after condensation is heated by pipeline back to power plant；Remaining uncooled steam exhaust drains into two level condenser, and two level condenser is using surface water as cooling water.Double condenser structures realize the high efficiente callback to exhaust steam residual heat, will also be isolated with absorption type heat pump system for cooling surface water, it is therefore prevented that the corrosiveness that surface water equips absorption heat pump and other systems.
Description
Technical field
The invention belongs to improve efficiency of energy utilization field, it is related to a kind of big temperature difference central heating system, it is solidifying using two groups
Vapour device structure can effectively recycle the exhaust steam residual heat of power plant steam turbine discharge.
Background technology
Currently, cogeneration of heat and power is the principal mode of China's winter central heating.Border on the sea, border on the river, the areas such as Lin Hu, thermoelectricity
Factory's adaptation to local conditions is cooled using surface water such as river, river, lake, seas for exhaust steam in steam turbine, more than surface water absorption steam exhaust
Heat, the surface water with latent heat achieve the purpose that waste heat recovery again as the low-temperature heat source of absorption heat pump.
However, seawater contains higher salinity, minerals are also enriched in the surface water such as river, river, lake, under actual condition,
Surface water can cause to corrode to pipeline and heat pump unit equipment, and there are security risks, seriously affect the safe and stable operation of system.
Invention content
For the steam power plant using earth's surface water cooling, technological transformation is carried out, solves surface water to pipeline and heating equipment
Etching problem.Contain a large amount of latent heats of vaporization in the steam exhaust of steam turbine discharge simultaneously, can not all be recycled using absorption heat pump
The problem of, the present invention provides the systems that a set of waste heat recovery using double condenser structures couples big temperature difference heating.
The problems such as equipment is corroded in effective recycling and surface water to solve turbine exhaust exhaust steam residual heat, this system provides
A set of effective scheme.
The present invention is that technical solution used by solving the problems, such as is：System is by steam turbine, generator, big temperature difference heat exchange system
System, level-one condenser, two level condenser, steam water heat exchanger, various water pumps and pipeline composition.
1, the steam exhaust of steam turbine end is emitted into level-one condenser and is condensed, and the condensed water formed after steam exhaust condensation is back to
Boiler heats, and remaining low-temperature steam exhaust is input to two level condenser and continues to cool down；
2, two level condenser is earth's surface water cooling condenser, and condenser piping is titanium alloy material, corrosion-resistant, so earth's surface
Water walks tube side, and low-temperature steam exhaust walks condenser shell side；Boiler heating is back to after low-temperature steam exhaust condensation；
3, stage casing steam extraction, the driving heat source as steam water heat exchanger are extracted from steam turbine；It is flowed out from level-one condenser
Cooling water water outlet with Low Temperature Thermal is input to steam water heat exchanger and is heated, and big temperature is input to as driving heat source after heating
Poor heating system is heated for secondary network return water, and it is steam turbine to be input to level-one condenser as cooling water after heat exchange cooling
Steam exhaust cools down, and completes cycle.
4, the secondary network return water from user side is input to big temperature difference heat-exchange system, supplies water as secondary network after the completion of heat exchange
Back to user side.
The beneficial effects of the invention are as follows：
1, the pipe network supply backwater temperature difference that heats increases；
2, double condensers can prevent corrosiveness of the seawater to absorption heat pump and other heating equipments with insulating sea water,
Maintenance system safe and stable operation；
Description of the drawings
Fig. 1 is principle of the invention figure；
In figure：1. steam turbine, 2. user sides, 3. big temperature difference heat-exchange systems, 4. steam water heat exchangers, 5. level-one condensers, 6.
Two level condenser, 7. primary nets supply water, 8. primary net return water, the water outlet of 9. cooling waters.
Specific implementation mode
In steam power plant, the low-temperature primary net return water (8) flowed back to from big temperature difference heat-exchange system (3) is delivered to level-one condenser
(5) tube side, steam turbine (1) steam exhaust to flow through level-one condenser (5) shell side carry out cooling condensation, the cooling water water outlet after heat exchange
(9) input steam water heat exchanger (4) is heated, driving of the stage casing steam extraction from steam turbine (1) as steam water heat exchanger (4)
Heat source is used as primary net water supply (7) to be input to big temperature difference heat-exchange system (3) after heated.
In level-one condenser (5), the condensed water formed after steam exhaust condensation is back to boiler heating, remaining low-temperature steam exhaust input
Continue to cool down to two level condenser (6)；Two level condenser (6) is earth's surface water cooling condenser, and condenser piping closes for titanium
Golden material, corrosion-resistant, so surface water walks tube side, low-temperature steam exhaust walks condenser shell side；It is back to boiler after low-temperature steam exhaust condensation
Heating.
Primary net water supply (7) after heating is input to big temperature difference heat-exchange system (3), participates in exchanging heat as driving heat source, most
It is input to level-one condenser (5) as primary net return water (8) eventually, completes cycle.The secondary network return water warp flowed out from user side (2)
After big temperature difference heat-exchange system (3) heating, user side (2) is input to directly as secondary network water supply.
Claims (1)
1. a kind of big temperature-difference central heating system of double condensers, it is characterised in that：It is solidifying that the steam exhaust of steam turbine end is emitted into level-one
Vapour device is condensed, and the condensed water formed after steam exhaust condensation is back to boiler heating, and remaining low-temperature steam exhaust is input to two level condensing
Device continues to cool down；Two level condenser is earth's surface water cooling condenser, is cooled down to steam exhaust by surface water, low temperature
Boiler heating is back to after steam exhaust condensation；Stage casing steam extraction, the driving heat source as steam water heat exchanger are extracted from steam turbine；From one
The cooling water water outlet of grade condenser outflow is input to steam water heat exchanger and is heated, and is input to greatly as driving heat source after heating
Temperature difference heat supply system is heated for secondary network return water, and being input to level-one condenser as cooling water water inlet after heat exchange cooling is
Exhaust steam in steam turbine cools down, and completes cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283392.5A CN108644758A (en) | 2018-04-02 | 2018-04-02 | A kind of big temperature-difference central heating system of double condensers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283392.5A CN108644758A (en) | 2018-04-02 | 2018-04-02 | A kind of big temperature-difference central heating system of double condensers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108644758A true CN108644758A (en) | 2018-10-12 |
Family
ID=63745295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810283392.5A Withdrawn CN108644758A (en) | 2018-04-02 | 2018-04-02 | A kind of big temperature-difference central heating system of double condensers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644758A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231004A (en) * | 2008-02-28 | 2008-07-30 | 清华大学 | Large temperature-difference central heating system |
| JP2010048490A (en) * | 2008-08-22 | 2010-03-04 | Chugoku Electric Power Co Inc:The | Drain system of boiler of thermal power plant |
| CN202221124U (en) * | 2011-08-19 | 2012-05-16 | 清华大学 | Central heating system with low-temperature backwater |
| CN106765448A (en) * | 2016-12-29 | 2017-05-31 | 大连葆光节能空调设备厂 | A kind of energy-saving heating system for reducing heat supply return water temperature |
| CN107702182A (en) * | 2017-09-01 | 2018-02-16 | 中清源环保节能有限公司 | A kind of big temperature difference recovery exhaust steam residual heat system in coal-burning power plant's heat supply initial station |
-
2018
- 2018-04-02 CN CN201810283392.5A patent/CN108644758A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231004A (en) * | 2008-02-28 | 2008-07-30 | 清华大学 | Large temperature-difference central heating system |
| JP2010048490A (en) * | 2008-08-22 | 2010-03-04 | Chugoku Electric Power Co Inc:The | Drain system of boiler of thermal power plant |
| CN202221124U (en) * | 2011-08-19 | 2012-05-16 | 清华大学 | Central heating system with low-temperature backwater |
| CN106765448A (en) * | 2016-12-29 | 2017-05-31 | 大连葆光节能空调设备厂 | A kind of energy-saving heating system for reducing heat supply return water temperature |
| CN107702182A (en) * | 2017-09-01 | 2018-02-16 | 中清源环保节能有限公司 | A kind of big temperature difference recovery exhaust steam residual heat system in coal-burning power plant's heat supply initial station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181012 |