CN106969396A - A kind of progressive solution system and method for cascaded utilization of energy - Google Patents
A kind of progressive solution system and method for cascaded utilization of energy Download PDFInfo
- Publication number
- CN106969396A CN106969396A CN201710272741.9A CN201710272741A CN106969396A CN 106969396 A CN106969396 A CN 106969396A CN 201710272741 A CN201710272741 A CN 201710272741A CN 106969396 A CN106969396 A CN 106969396A
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- China
- Prior art keywords
- heat
- heating
- heat pump
- absorption
- energy
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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
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- 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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of progressive solution system and method for cascaded utilization of energy, mainly include absorption heat pump and heat exchangers for district heating, absorption heat pump is connected with main steam turbine heat supply extraction line, drawn gas by the use of part heat supply and be used as the driving steam of absorption heat pump, reclaim the heat energy in low-grade heat source, heating backwater, hydrophobic return therrmodynamic system of the driving steam after heat pump；Heating water after heat pump subsequently enters heat exchangers for district heating, is sent out after temperature needed for being further heated to, to heat supply；The cold side of heat exchangers for district heating is connected with the heat supply extraction line of main steam turbine, and therrmodynamic system is returned after the hydrophobic cold side outflow from heat exchangers for district heating of heater；The present invention, which draws gas the heat supply of main steam turbine, to be divided into two, all the way into absorption heat pump, drives vapour source as it, reclaims the heat energy in low-grade heat source, heating backwater；Another road is directly entered heat exchangers for district heating, and the heating water return after absorption heat pump is heated is heated again, it is achieved thereby that the exhaust heat stepped deep exploitation using with low-grade heat source that part heat supply is drawn gas.
Description
Technical field
The present invention relates to heat pump and heat supply process field, specifically, the present invention is more particularly directed to a kind of cascaded utilization of energy
Progressive solution system and method.
Background technology
China's efficiency of energy utilization is relatively low, seriously constrains the economic growth and social progress of China.In face of national energy-saving
The Major Strategic Demand of emission reduction, exploitation high efficiency of energy is utilized and the new technology of low emission is imperative.In cogeneration unit,
In order to improve energy utilization rate, the cascade utilization of energy is realized, it is general to use main steam turbine extraction for heat supply.But, with main vapour
The parameter more and more higher of turbine operation, the temperature that main steam turbine heat supply is drawn gas is often higher than the demand of heating system, directly to heat
The significant wastage by energy is caused is heated in net water supply.
Meanwhile, it is special there is also substantial amounts of waste heat in the industries such as the electric power of highly energy-consuming, steel, cement, glass
It is not that less than 100 DEG C of low-grade heat source waste heat is effectively utilized, such as exhaust steam in steam turbine, industrial circulating cooling water, boiler emission tail
Gas etc., this also result in relatively low and the energy the waste of energy utilization efficiency.
The content of the invention
In order to solve the above problems, efficiency of energy utilization is improved, reduces energy waste, increases thermal power plant unit efficiency, is improved
Economic benefit, reduces coal consumption, realizes the cascade utilization of energy, the invention provides a kind of progressive solution system of cascaded utilization of energy
System and method, main steam turbine is drawn gas and is divided into two-way, the purpose of progressive solution is reached.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of progressive solution system of cascaded utilization of energy, including absorption heat pump 1, the vapour source entrance of absorption heat pump 1
Main steam turbine heat supply extraction line is connected, the thermal source inlet connection low-grade heat source 2 of absorption heat pump 1 is returned for heating
Water, the hydrophobic outlet connection therrmodynamic system of absorption heat pump 1, connection heat supply network in heating water return outlet after the heating of absorption heat pump 1
Heater 3, the cold side connection main steam turbine heat supply extraction line of heat exchangers for district heating 3 supplies water to heat heat supply network, heat supply network heating
The hydrophobic outlet connection therrmodynamic system of device 3；The heat supply of main steam turbine is drawn gas and is divided into two, all the way into absorption heat pump 1, is made
For the driving vapour source of absorption heat pump 1, the heat energy in low-grade heat source, heating backwater are reclaimed；Another road is directly entered heat
Net heater 3, is heated, it is achieved thereby that what part heat supply was drawn gas again to the heating water return after the heating of absorption heat pump 1
The exhaust heat stepped deep exploitation using with low-grade heat source, improves economic benefit.
The main steam turbine heat supply, which is drawn gas, installs temperature-decreased pressure reducer 4 on the pipeline of absorption heat pump 1, is easy to steam
Parameter is adjusted.
It is exhaust steam in steam turbine, recirculated cooling water or boiler smoke that the low-grade heat source 2, which is,.
Choke valve 5 is installed between the cold side and main steam turbine heat supply extraction line of the heat exchangers for district heating 3, to control
Into the parameter of drawing gas of heat exchangers for district heating 3.
The lithium bromide first-class absorption type heat pump of absorption heat pump 1.
The progressive solution method of the progressive solution system of described cascaded utilization of energy, a part of heat supply draws gas to enter through pipeline
Enter absorption heat pump 1, as the driving vapour source of absorption heat pump 1, the hydrophobic return therrmodynamic system flowed out from absorption heat pump 1；
Absorption heat pump reclaims the heat energy in low-grade heat source 2, heating backwater；Heating water return after heating subsequently enters heat supply network and added
Hot device 3, the cold side of heat exchangers for district heating 3 is connected with the heat supply extraction line of main steam turbine, is supplied water to heat heat supply network, heater
Hydrophobic return therrmodynamic system.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, efficiency of energy utilization is improved, economic benefit is lifted, effects of energy saving and emission reduction is obvious.
2nd, the simple and compact for structure of whole device, cost are low.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure, 1 is absorption heat pump, and 2 be low-grade heat source, and 3 be heat exchangers for district heating, and 4 be temperature-decreased pressure reducer, and 5 be throttling
Valve, 6 be pumps for hot water supply net.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of progressive solution system of cascaded utilization of energy of the present embodiment, a part of heat supply is drawn gas through pipeline
Into absorption heat pump 1, as the driving vapour source of absorption heat pump 1, the hydrophobic return heating power system flowed out from absorption heat pump 1
System.Drawn gas in heat supply on the pipeline of absorption heat pump 1, temperature-decreased pressure reducer 4 can be installed, be easy to the ginseng of regulation driving steam
Number, to meet the requirements of one's work of absorption heat pump 1.Absorption heat pump 1 is lithium bromide first-class absorption type heat pump, is reclaimed low-grade
Heat energy in thermal source 2, heating backwater.Heating water return after heating subsequently enters heat exchangers for district heating 3, heat exchangers for district heating 3
Cold side is connected with the heat supply extraction line of main steam turbine, is supplied water to heat heat supply network, the hydrophobic return therrmodynamic system of heater.
Choke valve 5 is installed between the cold side of heat exchangers for district heating 3 and the heat supply extraction line of main steam turbine, to control to enter heat supply network
The parameter of drawing gas of heater 3.
The operation principle of the present invention is as follows：The present invention, which draws gas the heat supply of main steam turbine, to be divided into two, and enters absorb all the way
Formula heat pump, as the driving vapour source of absorption heat pump, reclaims the heat energy in low-grade heat source, heating backwater.Another road is straight
Tap into heat exchangers for district heating, the heating water return after absorption heat pump is heated is heated again, it is achieved thereby that part heat supply
The exhaust heat stepped deep exploitation using with low-grade heat source drawn gas, improves economic benefit.
Claims (6)
1. a kind of progressive solution system of cascaded utilization of energy, it is characterised in that：Including absorption heat pump (1), absorption heat pump
(1) vapour source entrance connection main steam turbine heat supply extraction line, the thermal source inlet connection low-grade heat source of absorption heat pump (1)
(2) it is used for heating backwater, the hydrophobic outlet connection therrmodynamic system of absorption heat pump (1), after the heating of absorption heat pump (1)
Heating water return outlet connection heat exchangers for district heating (3), the cold side connection main steam turbine heat supply extraction line of heat exchangers for district heating (3) is used
To heat heat supply network water supply, the hydrophobic outlet connection therrmodynamic system of heat exchangers for district heating (3)；The heat supply of main steam turbine is drawn gas one point and is
Two, all the way into absorption heat pump (1), as the driving vapour source of absorption heat pump (1), the heat energy in low-grade heat source is reclaimed,
Heating backwater；Another road is directly entered heat exchangers for district heating (3), to the heating water return after absorption heat pump (1) heating
Heat again, it is achieved thereby that part heat supply draw gas it is exhaust heat stepped using and low-grade heat source deep exploitation, improve through
Ji benefit.
2. the progressive solution system of cascaded utilization of energy according to claim 1, it is characterised in that：The main steam turbine is supplied
Heat is drawn gas and installs temperature-decreased pressure reducer (4) on the pipeline of absorption heat pump (1)), it is easy to that steam parameter is adjusted.
3. the progressive solution system of cascaded utilization of energy according to claim 1, it is characterised in that：The low-grade heat source
(2) it is exhaust steam in steam turbine, recirculated cooling water or boiler smoke to be.
4. the progressive solution system of cascaded utilization of energy according to claim 1, it is characterised in that：The heat exchangers for district heating
(3) choke valve (5) is installed between cold side and main steam turbine heat supply extraction line, to control to enter heat exchangers for district heating (3)
Parameter of drawing gas.
5. the progressive solution system of cascaded utilization of energy according to claim 1, it is characterised in that：The absorption heat pump
(1) lithium bromide first-class absorption type heat pump.
6. the progressive solution method of the progressive solution system of the cascaded utilization of energy described in any one of claim 1 to 5, its feature
It is：A part of heat supply is drawn gas enters absorption heat pump (1) through pipeline, as the driving vapour source of absorption heat pump (1), from absorption
The hydrophobic return therrmodynamic system of formula heat pump (1) outflow；Absorption heat pump reclaims the heat energy in low-grade heat source (2), heating
Backwater；Heating water return after heating subsequently enters heat exchangers for district heating (3), the cold side of heat exchangers for district heating (3) and main steam turbine
Heat supply extraction line is connected, and is supplied water to heat heat supply network, the hydrophobic return therrmodynamic system of heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710272741.9A CN106969396A (en) | 2017-04-24 | 2017-04-24 | A kind of progressive solution system and method for cascaded utilization of energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710272741.9A CN106969396A (en) | 2017-04-24 | 2017-04-24 | A kind of progressive solution system and method for cascaded utilization of energy |
Publications (1)
| Publication Number | Publication Date |
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| CN106969396A true CN106969396A (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710272741.9A Pending CN106969396A (en) | 2017-04-24 | 2017-04-24 | A kind of progressive solution system and method for cascaded utilization of energy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469059A (en) * | 2018-05-08 | 2018-08-31 | 中国华能集团清洁能源技术研究院有限公司 | A kind of the steam energy cascade utilization coupled system and working method of annual operation |
| CN108916968A (en) * | 2018-08-24 | 2018-11-30 | 沈阳世杰电器有限公司 | A kind of heating system with solid thermal energy storage device |
| CN110362893A (en) * | 2019-06-28 | 2019-10-22 | 浙江大学 | A kind of heat supply pipeline heat preservation property and hydrophobic monitoring diagnosis system based on Internet of Things |
| CN110939973A (en) * | 2019-12-23 | 2020-03-31 | 山西省工业设备安装集团有限公司 | Gradient temperature-increasing type large-capacity heat pump heating system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022770A (en) * | 2010-10-26 | 2011-04-20 | 北京国电电科院节能技术有限公司 | Heat and power cogeneration energy-saving device and method for supplying heat by using direct waste heat of air-cooling unit |
| CN103438492A (en) * | 2013-09-15 | 2013-12-11 | 张茂勇 | Low-vacuum absorption-type composite heat pump residual heat supply system based on ultra-great-temperature-difference heat supply network |
-
2017
- 2017-04-24 CN CN201710272741.9A patent/CN106969396A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022770A (en) * | 2010-10-26 | 2011-04-20 | 北京国电电科院节能技术有限公司 | Heat and power cogeneration energy-saving device and method for supplying heat by using direct waste heat of air-cooling unit |
| CN103438492A (en) * | 2013-09-15 | 2013-12-11 | 张茂勇 | Low-vacuum absorption-type composite heat pump residual heat supply system based on ultra-great-temperature-difference heat supply network |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469059A (en) * | 2018-05-08 | 2018-08-31 | 中国华能集团清洁能源技术研究院有限公司 | A kind of the steam energy cascade utilization coupled system and working method of annual operation |
| CN108916968A (en) * | 2018-08-24 | 2018-11-30 | 沈阳世杰电器有限公司 | A kind of heating system with solid thermal energy storage device |
| CN110362893A (en) * | 2019-06-28 | 2019-10-22 | 浙江大学 | A kind of heat supply pipeline heat preservation property and hydrophobic monitoring diagnosis system based on Internet of Things |
| CN110939973A (en) * | 2019-12-23 | 2020-03-31 | 山西省工业设备安装集团有限公司 | Gradient temperature-increasing type large-capacity heat pump heating system |
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| PB01 | Publication | ||
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Application publication date: 20170721 |