CN208330475U - A kind of steam high-grade energy recycling system for realizing annual operation - Google Patents
A kind of steam high-grade energy recycling system for realizing annual operation Download PDFInfo
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- CN208330475U CN208330475U CN201820674208.5U CN201820674208U CN208330475U CN 208330475 U CN208330475 U CN 208330475U CN 201820674208 U CN201820674208 U CN 201820674208U CN 208330475 U CN208330475 U CN 208330475U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
A kind of steam high-grade energy recovery utilizing system for realizing annual operation, is mainly used in thermal power plant unit, which includes back pressure turbine, steam triple valve, host low-pressure heater and heat exchangers for district heating；Main steam turbine passes through mesolow communicating pipe extraction for heat supply.Back pressure turbine air intake is connected with main steam turbine heat supply extraction line, is rotated using heating steam pushing turbine turbine, and then drives electrical power generators, and recovered steam high-grade energy, institute's generated energy is incorporated to station service electrical system；Back pressure turbine steam discharge is divided into two-way by steam triple valve；Heating Season, steam discharge enter heat exchangers for district heating for heat supply through triple valve, and non-heating season, by the switching of triple valve, steam discharge enters host low-pressure heater through triple valve, realizes heat recovery；Using Tthe utility model system, realizes the annual operation of back pressure turbine, reduce station service power consumption rate, recycle heating steam high-grade energy, promote unit economy.
Description
Technical field
The utility model relates to back pressure machine and heat supply process fields, specifically, in particular to a kind of reality of the utility model
The steam high-grade energy recycling system of existing annual operation.
Background technique
China's efficiency of energy utilization is relatively low, seriously constrains the economic growth and social progress in China.In face of national energy-saving
The Major Strategic Demand of emission reduction, exploitation high efficiency of energy utilizes and the new technology of low emission is imperative.In cogeneration unit,
In order to improve energy utilization rate, realizes the cascade utilization of energy, generally use main steam turbine extraction for heat supply.But with main vapour
The parameter of turbine operation is higher and higher, and the temperature of main steam turbine heat supply steam extraction is often higher than the demand of heating system, directly to heat
Net, which supplies water to be heated, will cause the significant wastage of energy.
Currently, existing research person proposes the high-quality energy using back pressure turbine recycling heat supply steam extraction, back pressure turbine
Steam discharge directly heats hot net water, or driving absorption heat pump recycles residual heat of electric power plant, heats hot net water, realizes energy cascade benefit
With.However, the problem of system is, the systems such as back pressure turbine of investment, only Heating Season can be used, annual hours of operation
Relatively low, the strong influence economic benefit of system does not give full play to potential possessed by itself.
Summary of the invention
To solve the above-mentioned problems, the hours of operation for improving back pressure turbine recycles the high-grade energy of heating steam,
Station service power consumption rate is reduced, unit economy is promoted, the utility model provides a kind of steam high-grade energy for realizing annual operation
Recycling system and working method.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of steam high-grade energy recovery utilizing system for realizing annual operation, including back pressure turbine 1, air intake
It is connected with the heat supply extraction line of main steam turbine mesolow communicating pipe；Steam triple valve 3, air intake and back pressure turbine 1
Steam drain is connected, and first via venthole is connected with the steam inlet of heat exchangers for district heating 5, heats heat supply network recirculated water, the second tunnel goes out vapour
Mouthful, it is connected by temperature-decreased pressure reducer 6 with the regenerative steam entrance of host low-pressure heater 4, heat-setting water replaces low pressure (LP) cylinder low
Press steam extraction；When operation, Heating Season, the steam discharge of back pressure turbine 1 enters heat supply network after steam triple valve 3, by first via venthole
Heater 5 heats heat supply network recirculated water, external heat supply, and non-heating season then enters host low-pressure heater 4 by the second road venthole,
Heat-setting water replaces low pressure (LP) cylinder low-pressure pumping steam；To realize the annual operation of back pressure turbine, station service power consumption rate is reduced, is returned
The high-grade energy for receiving heating steam, improves unit economy.
The host low-pressure heater 4 be No. five it is low plus, No. six it is low plus, No. seven it is low plus or No. eight it is low plus.
The back pressure turbine 1 drives energy conversion device 2 to run, externally exports energy by shaft coupling.
The energy conversion device 2 is synchronous generator, asynchronous generator, pump, blower or compressor.
In order to meet the heating steam parameter demand of host low-pressure heater 4, in the second road venthole of steam triple valve 3
It is mounted with temperature-decreased pressure reducer 6, between the regenerative steam entrance of host low-pressure heater 4 convenient for steam parameter is adjusted.
The heat exchangers for district heating 5 is absorption heat pump, shell-and-tube heat exchanger or tube-sheet heat exchanger.
Compared with prior art, the utility model has the beneficial effects that
The hours of operation of back pressure turbine is effectively increased, station service power consumption rate is reduced, recycles the high-grade energy of heating steam
Amount, to improve unit economy.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
In figure, 1 is back pressure turbine, and 2 be energy conversion device, and 3 be steam triple valve, and 4 be host low-pressure heater, 5
It is temperature-decreased pressure reducer for heat exchangers for district heating, 6.
Specific embodiment
The embodiments of the present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of steam high-grade energy recovery utilizing system for realizing annual operation of the present embodiment.Thermal motor
The steam extraction of group mesolow communicating pipe recycles high-grade energy into back pressure turbine 1, drives generator hair by shaft coupling
Electricity, Station Service Electrical-Energy system can be directly incorporated by generating electricity.The steam discharge of back pressure turbine 1 divides by steam triple valve 3 for two-way,
When Heating Season, steam discharge passes through the first way outlet of steam triple valve 3, into heat exchangers for district heating 5, heats heat supply network return water, realization pair
Outer heat supply；When non-heating season, steam parameter is adjusted to completely through temperature-decreased pressure reducer 6 by the second way outlet of steam triple valve 3
The heating steam parameter demand of sufficient host low-pressure heater 4, into host low-pressure heater 4, heat-setting water replaces host low
Press steam extraction.To realize the annual operation of back pressure turbine, station service power consumption rate is reduced, the high-grade energy of heating steam is recycled,
Improve unit economy.
The working principle of the utility model is as follows: Heating Season, and heating steam parameter is higher, recycles Gao Pin through back pressure turbine
After the energy of position, it is used for heat supply, both meets heat demand, meanwhile, the energy of recycling reduces station service for driving in-plant equipment.
Non-heating season promotes unit economy, passes through steam triple valve without heat demand, but for further digging system potentiality
Switching, the steam discharge of back pressure turbine is introduced into unit host low-pressure heater, replaces host low-pressure pumping steam.By the system,
The annual operation for realizing system, plays the role of reduction station service power consumption rate, recycles the high-grade energy of heating steam, improve machine
Group economy.
Claims (6)
1. a kind of steam high-grade energy recovery utilizing system for realizing annual operation, it is characterised in that: including back pressure turbine
(1), air intake is connected with the heat supply extraction line of main steam turbine mesolow communicating pipe；Steam triple valve (3), air intake with
The steam drain of back pressure turbine (1) is connected, and first via venthole is connected with the steam inlet of heat exchangers for district heating (5), heats heat supply network
Recirculated water, the second road venthole are connected with the regenerative steam entrance of host low-pressure heater (4) by temperature-decreased pressure reducer (6), are added
Heat setting is born water, and replaces low pressure (LP) cylinder low-pressure pumping steam；When operation, Heating Season, the steam discharge of back pressure turbine (1) is through steam triple valve (3)
Afterwards, entered heat exchangers for district heating (5) by first via venthole, heat heat supply network recirculated water, external heat supply, non-heating season, then by second
Road venthole enters host low-pressure heater (4), heat-setting water, replaces low pressure (LP) cylinder low-pressure pumping steam；To realize back pressure steam
The annual operation of turbine, reduces station service power consumption rate, recycles the high-grade energy of heating steam, improve unit economy.
2. the steam high-grade energy recovery utilizing system according to claim 1 for realizing annual operation, which is characterized in that
The host low-pressure heater (4) be No. five it is low plus, No. six it is low plus, No. seven it is low plus or No. eight it is low plus.
3. the steam high-grade energy recovery utilizing system according to claim 1 for realizing annual operation, which is characterized in that
The back pressure turbine (1) connects energy conversion device (2) by shaft coupling, externally exports energy.
4. the steam high-grade energy recovery utilizing system according to claim 3 for realizing annual operation, which is characterized in that
The energy conversion device (2) is synchronous generator, asynchronous generator, pump, blower or compressor.
5. the steam high-grade energy recovery utilizing system according to claim 1 for realizing annual operation, which is characterized in that
In order to meet the heating steam parameter demand of host low-pressure heater (4), in the second road venthole of steam triple valve (3) and master
Temperature-decreased pressure reducer (6) are mounted between the regenerative steam entrance of machine low-pressure heater (4), convenient for steam parameter is adjusted.
6. the steam high-grade energy recovery utilizing system according to claim 1 for realizing annual operation, which is characterized in that
The heat exchangers for district heating (5) is absorption heat pump, shell-and-tube heat exchanger or tube-sheet heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820674208.5U CN208330475U (en) | 2018-05-08 | 2018-05-08 | A kind of steam high-grade energy recycling system for realizing annual operation |
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| CN201820674208.5U CN208330475U (en) | 2018-05-08 | 2018-05-08 | A kind of steam high-grade energy recycling system for realizing annual operation |
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| CN208330475U true CN208330475U (en) | 2019-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487952A (en) * | 2018-05-08 | 2018-09-04 | 中国华能集团清洁能源技术研究院有限公司 | A kind of steam high-grade energy-recuperation system and working method for realizing annual operation |
| CN110056403A (en) * | 2019-04-29 | 2019-07-26 | 东方电气集团东方汽轮机有限公司 | It is connected with the steam extraction back pressure heating type steam turbine and application method of Analysis of Exhaust Steam Recovering System |
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2018
- 2018-05-08 CN CN201820674208.5U patent/CN208330475U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487952A (en) * | 2018-05-08 | 2018-09-04 | 中国华能集团清洁能源技术研究院有限公司 | A kind of steam high-grade energy-recuperation system and working method for realizing annual operation |
| CN110056403A (en) * | 2019-04-29 | 2019-07-26 | 东方电气集团东方汽轮机有限公司 | It is connected with the steam extraction back pressure heating type steam turbine and application method of Analysis of Exhaust Steam Recovering System |
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