CN108870502A - A kind of big temperature-difference central heating system using double condensers - Google Patents
A kind of big temperature-difference central heating system using double condensers Download PDFInfo
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- CN108870502A CN108870502A CN201810275720.7A CN201810275720A CN108870502A CN 108870502 A CN108870502 A CN 108870502A CN 201810275720 A CN201810275720 A CN 201810275720A CN 108870502 A CN108870502 A CN 108870502A
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- water
- heat pump
- condenser
- absorption heat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D1/00—Steam central heating systems
- F24D1/04—Steam central heating systems operating with exhaust steam
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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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
-
- 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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (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 using double condensers, involved system and device is made of steam turbine, generator, multiple absorption heat pumps, level-one condenser, second level condenser, steam water heat exchanger, flow regulator, various water pumps and pipeline.Using two condensers and multistage absorption heat pump structure.Low-temperature heat source of the primary net return water directly as absorption heat pump d, it is steam exhaust cooling that level-one condenser is delivered to after heat exchange as condensed water water, condensing is discharged a part and is delivered to second level condenser and river, river, lake, seawater to make heat exchange cooling, another part condensed water, which is published books, passes sequentially through absorption heat pump a, absorption heat pump b, absorption heat pump c, absorption heat pump d and steam water heat exchanger progress stepped heating, supplies water eventually as primary net and is delivered to user side.
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, using Multi-stage heat
Pump and double condenser structures, can effectively recycle the exhaust steam residual heat of power plant steam turbine discharge.
Background technique
With the development of economy with the raising of living standards of the people, there is higher want for the quality of concentrated supply of heating in the city
It asks.Heat supply is necessary infrastructure in urban economy development and people's life, is the basic guarantee for guaranteeing urban construction, institute
Constantly to be innovated on heat supply mode, to adapt to the growth requirement in epoch.
Problems existing for traditional heating mode at present, mainly have：
1, there are a large amount of latent heat in the steam exhaust of steam turbine in thermal power plant discharge, cannot be recycled well, often through
Cooling tower is discharged into air, causes the waste of the energy.
2, steam power plant's cooling tower waste heat need to evaporate a large amount of water resource, and situation is more severe for the north of water shortage.
3, present part steam power plant cools down steam exhaust using river, river, lake, seawater, and river, river, lake, seawater contain salt
Point, pipeline and system equipment can be caused to corrode, influence the normal operation of system.
4, traditional heating system supply backwater temperature difference is small, and return water temperature reaches 70 DEG C or so, and the waste heat of power plant cooling tower can not
It adds, a large amount of waste heat is caused to waste.
Summary of the invention
The problems such as to solve effective recycling of turbine exhaust exhaust steam residual heat and increasing supply backwater temperature difference, present 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, multistage absorption heat
Pump, level-one condenser, second level condenser, steam water heat exchanger, flow regulator, various water pumps and pipeline composition.
1, the steam extraction of steam turbine middle section divides quinquepartite, respectively as absorption heat pump d, absorption heat pump a, absorption heat pump
B, the driving heat source of absorption heat pump c and steam water heat exchanger.Steam turbine end discharge steam exhaust be input in level-one condenser into
Row condensation cooling, is heated after being condensed back to boiler.By the script level-one condenser cooling using river, river, lake, seawater
One second level condenser is installed again afterwards, injection supplement condensed water, second level condenser utilize river, river, lake, sea among two condensers
Water is that condensed water is cooling, and because condenser internal pipeline is that titanium alloy is anticorrosive, shell side is that carbon steel is not anticorrosive, thus river, river,
Condenser tube side is walked in lake, seawater, and condensed water walks shell side；Condensed water after cooling is back to level-one condenser.
2, in absorption heat pump a, absorption heat pump b, absorption heat pump c, the middle section steam extraction from steam turbine is as drive
Dynamic heat source；Partial condensation water, which is discharged, is again split into two parts, low-temperature heat source of a part as multistage absorption heat pump unit, separately
A part passes sequentially through absorption heat pump a, absorption heat pump b, absorption heat pump c as primary net water supply and is heated；Heating
Afterwards, primary net, which supplies water, is input to absorption heat pump d；Added as boiler is returned after the middle section steam extraction heat exchange condensation of driving heat source
Heat；After converging as the partial condensation water water outlet of low-temperature heat source and the primary net return water of low temperature, and dropped with by second level condenser
The condensed water of temperature converges, and is transported to level-one condenser collectively as condensed water water inlet.
3, the primary net water supply after multi-stage heat pump heats is delivered to absorption heat pump d, the part middle section from steam turbine
Steam extraction is as high temperature heat source, and for the primary net return water being transmitted back to from user side as low-temperature heat source, collective effect is through multi-stage heat pump
Primary net water supply after heating is heated；Heat exchange is completed, and it is steam turbine that primary net return water, which is delivered to level-one condenser, after cooling
Steam exhaust cooling, middle section steam extraction are condensed into condensed water and are being heated by the progress of conveying back boiler, and it is defeated that the medium temperature after heat exchange once nets water supply
It send to steam water heat exchanger and is heated again, the high temperature finally exported from steam water heat exchanger once nets water supply and is delivered to user side.
The beneficial effects of the invention are as follows：
1, condenser waste heat can be recycled to the maximum extent with the smallest cost, improve energy utilization rate；
2, the pipe network supply backwater temperature difference that heats increases；
3, double condensers can isolate river, river, lake, seawater, avoid leading to heat exchanger tube because of unexpected factors such as pressure and vibrations
Rupture, is mixed into river, river, lake, seawater in condensed steam exhaust, and damages generating equipment.
Detailed description of the invention
Fig. 1 is principle of the invention figure；
In figure：1. steam turbine, 2. user sides, 3. steam water heat exchangers, 4. absorption heat pump d, 5. absorption heat pump a, 6. inhale
Receipts formula heat pump b, 7. absorption heat pump c, 8. level-one condensers, 9. second level condensers, 10. primary net return water, 11. primary nets supply
Water, the water inlet of 12. condensed waters, the water outlet of 13. condensed waters.
Specific embodiment
As shown in Figure 1, system is by steam turbine (1), steam water heat exchanger (3), absorption heat pump d (4), absorption heat pump a
(5), absorption heat pump b (6), absorption heat pump c (7), level-one condenser (8), second level condenser (9) and connecting pipe and attached
Part composition.
The primary net return water (11) of user side is delivered to absorption heat pump d (4) as low-temperature heat source, inputs after cooling down
To level-one condenser (8).
From middle section steam extraction is extracted in steam turbine (1) as absorption heat pump a (5), absorption pump b (6), absorption heat pump c
(7), the driving heat source of absorption heat pump d (4) and steam water heat exchanger (3).The steam exhaust of steam turbine (1) is discharged to level-one condenser (8)
Heating condensate water returns to boiler heating after condensation.Condensed water water outlet (13) is divided into two parts, and a part is input to second level condenser
(9) with river, river, lake, seawater to make heat exchange, level-one condenser (8) are returned after cooling；Another part is transported to multi-stage heat pump unit.
It is transported to the condensed water of multi-stage heat pump unit, a part is as absorption heat pump a (5), absorption heat pump b (6), suction
The low-temperature heat source of receipts formula heat pump c (7) is back to level-one condenser (8) after heat exchange cooling；Another part as primary net supply water according to
It is secondary to flow through absorption heat pump a (5), absorption heat pump b (6), absorption heat pump c (7), absorption heat pump d (4) and vapour-water heat exchange
Device (3) carries out Multi-stage heating, finally enters user side (2), completes circulation.
Claims (3)
1. a kind of big temperature-difference central heating system using double condensers, it is characterised in that：The steam exhaust of steam turbine end discharge is defeated
Enter to level-one condenser and carries out condensation cooling；A second level condenser is connected after level-one condenser, condensed water water outlet is divided into two
Point, a part is delivered to multi-stage heat pump unit, and another part is input to second level condenser, is changed using river, river, lake, seawater
Heat drop temperature, river, river, lake, seawater walk condenser tube side, and tube side is titanium alloy material, corrosion-resistant.
2. a kind of big temperature-difference central heating system using double condensers according to claim 1, it is characterised in that：?
Absorption heat pump a, absorption heat pump b, in absorption heat pump c, the middle section steam extraction from steam turbine is as driving heat source；Part is cold
Condensate water outlet is again split into two parts, and low-temperature heat source of a part as multistage absorption heat pump unit, another part is as one
Secondary net water supply passes sequentially through absorption heat pump a, absorption heat pump b, absorption heat pump c；After heating, primary net, which supplies water, is input to suction
Receipts formula heat pump d；It is heated as boiler is returned after the middle section steam extraction heat exchange condensation of driving heat source；Part as low-temperature heat source
After the primary net return water of condensed water water outlet and low temperature converges, and converge with the condensed water by the cooling of second level condenser, it is common to make
Level-one condenser is transported to for condensed water water inlet.
3. a kind of big temperature-difference central heating system using double condensers according to claim 1, it is characterised in that：Through
Primary net after multi-stage heat pump heating, which supplies water, is delivered to absorption heat pump d, the middle section steam extraction of steam turbine as high temperature heat source, from
For the primary net return water that family side is transmitted back to as low-temperature heat source, collective effect is that primary net water supply is heated；After the completion of heat exchange, release
The primary net return water for having put Low Temperature Thermal is input to level-one condenser；Middle section steam extraction is condensed into water and is heated by conveying back boiler；
Primary net water supply after heat exchange is delivered to steam water heat exchanger and is heated again, and the high temperature finally exported from steam water heat exchanger is primary
Net supplies water and is delivered to user side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275720.7A CN108870502A (en) | 2018-03-30 | 2018-03-30 | A kind of big temperature-difference central heating system using double condensers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275720.7A CN108870502A (en) | 2018-03-30 | 2018-03-30 | A kind of big temperature-difference central heating system using double condensers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108870502A true CN108870502A (en) | 2018-11-23 |
Family
ID=64326457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810275720.7A Withdrawn CN108870502A (en) | 2018-03-30 | 2018-03-30 | A kind of big temperature-difference central heating system using double condensers |
Country Status (1)
| Country | Link |
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| CN (1) | CN108870502A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201181044Y (en) * | 2008-02-28 | 2009-01-14 | 清华大学 | Large-temperature difference central heating unit |
| CN102721094A (en) * | 2012-06-14 | 2012-10-10 | 华电电力科学研究院 | Heating system for recycling waste heat of open circulating water in power plant |
| CN103670548A (en) * | 2013-12-04 | 2014-03-26 | 大连葆光节能空调设备厂 | Heat and power cogeneration central heating system based on heat pump |
| CN106610044A (en) * | 2016-12-29 | 2017-05-03 | 大连葆光节能空调设备厂 | System for enlarging cogeneration centralized heat supply scale |
| CN106642278A (en) * | 2016-10-18 | 2017-05-10 | 王清正 | Heat pump and high back pressure combined heat supply system |
-
2018
- 2018-03-30 CN CN201810275720.7A patent/CN108870502A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201181044Y (en) * | 2008-02-28 | 2009-01-14 | 清华大学 | Large-temperature difference central heating unit |
| CN102721094A (en) * | 2012-06-14 | 2012-10-10 | 华电电力科学研究院 | Heating system for recycling waste heat of open circulating water in power plant |
| CN103670548A (en) * | 2013-12-04 | 2014-03-26 | 大连葆光节能空调设备厂 | Heat and power cogeneration central heating system based on heat pump |
| CN106642278A (en) * | 2016-10-18 | 2017-05-10 | 王清正 | Heat pump and high back pressure combined heat supply system |
| CN106610044A (en) * | 2016-12-29 | 2017-05-03 | 大连葆光节能空调设备厂 | System for enlarging cogeneration centralized heat supply scale |
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Application publication date: 20181123 |