CN202074601U - Steam exhausting, waste heat recovering and heating system of direct air cooling unit - Google Patents
Steam exhausting, waste heat recovering and heating system of direct air cooling unit Download PDFInfo
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- CN202074601U CN202074601U CN2011201356142U CN201120135614U CN202074601U CN 202074601 U CN202074601 U CN 202074601U CN 2011201356142 U CN2011201356142 U CN 2011201356142U CN 201120135614 U CN201120135614 U CN 201120135614U CN 202074601 U CN202074601 U CN 202074601U
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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
The utility model relates to a steam exhausting, waste heat recovering and heating system of a direct air cooling unit, which comprises a direct air cooling turboset, an air cooling condenser and a high back pressure condenser which are connected with a steam exhausting end of the direct air cooling turboset through a steam exhausting pipeline, a heat supply network heater connected with a steam inlet end of the direct air cooling turboset and a heat supply network circulating pipeline. The heat supply network pipeline is firstly preheated by the high back pressure wet cooling condenser, and then secondarily heated by the heat supply network heater. The steam exhausting, waste heat recovering and heating system is applied to thermal power plants for supplying heat for users by utilizing the heat energy in waste steam of the turboset as the heat source of circulating water in the heat supply network, thereby fully utilizing the heat energy in the waste steam, not only preventing the heat energy from losing, but also generating no thermal pollution to the surrounding environment.
Description
Technical field
The utility model relates to the exhausted spare heat recovery system of Air-cooled Unit in the steam power plant, particularly utilizes waste heat to carry out the system of heat supply.
Background technology
At present, the cogeneration units heat supply in the steam power plant has two kinds of patterns: back pressure type heat supply and extraction condensing type heat supply.Steam turbine is not established condenser in the back pressure type heating system, and after the steam acting, the back pressure steam discharge is to extraneous user's heat supply; And extraction condensing type cogeneration adopts the direct air-cooling turbine group, its operation principle is meant that the steam with boiler output is transported in the Steam Turbine, when steam expand into certain pressure in steam turbine, from steam turbine, extract a part of steam out by heat exchangers for district heating heating heat supply network recirculated water, to the user side heat supply, remaining steam continuation is expanded to do work in steam turbine and is generated electricity; Exhaust steam in steam turbine enters condenser, becomes condensate water after the cooling in condenser, comes back to therrmodynamic system.Therefore extraction condensing type cogeneration system can satisfy in generating to external world that the user carries out heat supply suitably adjusting between power supply and the heat supply, uses comparatively extensive.But from the angle of using energy source, system also exists following deficiency in the cogeneration of heat and power of extraction condensing type unit: the one, and be used for the steam of heat supply owing to from steam turbine, extracted a part out, so reduced the generated energy of steam turbine; The 2nd, the exhaust steam of coming out from steam turbine enters in the process of carrying out condensation the condenser, and the heat of exhaust steam discharging is discharged in the environment on every side with the form of low potential energy, has not only caused heat-energy losses, also can cause thermal pollution to surrounding environment.
The utility model content
The utility model technical issues that need to address provide a kind of heat energy that can make full use of the exhaust steam of discharging in the extraction condensing type unit, with its residual neat recovering system that is used as thermal source in the heat supply network circulation line.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
The Direct Air-cooled Unit exhausted spare heat reclaims heating system, the air cooling tubes condenser that comprises the direct air-cooling turbine group, is connected with direct air-cooling turbine group exhaust steam end by blow-off line, heat exchangers for district heating and the heat supply network circulation line that is connected with direct air-cooling turbine group admission end, be connected with the clammy condenser of high back pressure by valve on the blow-off line between described direct air-cooling turbine group and the air cooling tubes condenser, the heat supply network circulation line connects heat exchangers for district heating again through the clammy condenser of high back pressure earlier.Clammy condenser of described high back pressure and air cooling tubes condenser are set up in parallel, control its flow direction by the exhaust steam that the direct air-cooling turbine group is discharged by valve, when the winter heating phase arrives, by the blow-off line of valve closing, open towards the blow-off line of the clammy condenser of high back pressure towards air cooling tubes condenser; Then lead to the blow-off line of the clammy condenser of high back pressure other seasons by valve closing, open the blow-off line towards air cooling tubes condenser.
Operation principle of the present utility model is as described below:
When the heating phase is moved the utility model in the winter time, will close towards the blow-off line of air cooling tubes condenser, will open towards the blow-off line of the clammy condenser of high back pressure by valve.Improve the exhaust steam pressure of steam turbine, the temperature of raising exhaust steam then, utilize recirculated water in the heat supply network circulation line as the cooling water of the clammy condenser of high back pressure, be used for the exhaust steam that flows into the clammy condenser of high back pressure is carried out clammy, therrmodynamic system is returned from the delivery port of the clammy condenser of high back pressure in the exhaust steam back that is cooled.Heat supply network recirculated water is delivered to the heat exchangers for district heating that is connected with steam turbine after the clammy condenser heat exchange of high back pressure, be sent to user side again.Turn back to successively again in clammy condenser of high back pressure and the heat exchangers for district heating after the high-temperature-hot-water cooling and carry out heat exchange, constitute a complete circulation waterway.
Because the technological progress of having adopted technique scheme, the utility model to obtain is:
What the utility model adopted is on the basis of direct air-cooling turbine group, increase the clammy condenser of high back pressure, and adopt heat supply network recirculated water as cooling water, the heat energy of Steam Turbine exhaust steam is fully used, satisfy the heat demand of winter heating phase, not only can not cause thermal loss, can not produce thermal pollution yet surrounding environment.The heat exchangers for district heating that increases in the heat supply network circulation line can carry out the heating second time to the recirculated water in the heat supply network circulation line, to satisfy the heating demand.
Description of drawings
Fig. 1: be structural representation of the present utility model.
Wherein: 1. steam turbine, 2. heat exchangers for district heating, 3. air cooling tubes condenser, 4. heat supply network circulation line, the 5. clammy condenser of high back pressure, 6. valve.Heavy line is represented blow-off line among the figure, fine line and arrow represent heat supply network circulation line and circulating water flow to.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
A kind of Direct Air-cooled Unit exhausted spare heat reclaims heating system, as shown in Figure 1.Comprise direct air-cooling turbine group, air cooling tubes condenser 3, the clammy condenser 5 of high back pressure, heat exchangers for district heating 2 and heat supply network circulation line 4.
The direct air-cooling turbine group comprises steam turbine 1, and steam turbine utilizes the steam acting to generate electricity.The exhaust steam of steam turbine connects air cooling tubes condenser 3 and the clammy condenser 5 of high back pressure by blow-off line respectively through valve 6.
Clammy condenser of high back pressure and air cooling tubes condenser are set up in parallel, the exhaust steam of steam turbine output is controlled its flow direction by valve, when the winter heating phase arrives, the blow-off line that leads to air cooling tubes condenser by valve closing, open the blow-off line that leads to the clammy condenser of high back pressure, exhaust steam is cooled to condensate water by the clammy condenser cooling of high back pressure, and condensate water turns back to the therrmodynamic system from the delivery port of the clammy condenser of high back pressure; Then lead to the blow-off line of the clammy condenser of high back pressure other seasons by valve closing, open the blow-off line that leads to air cooling tubes condenser, exhaust steam presses the condenser cooling to be cooled to condensate water by air cooling, and condensate water presses the delivery port of condenser to turn back to the therrmodynamic system from air cooling.
Heating phase in the winter time, when opening towards the blow-off line of the clammy condenser of high back pressure, the heat supply network circulation line passes the clammy condenser of high back pressure, recirculated water in the heat supply network circulation line is as the cooling water of the clammy condenser of high back pressure, recirculated water passes through heat exchangers for district heating again after the clammy condenser heating of high back pressure, utilize the part steam of extracting out from steam turbine to carry out post bake, make the circulating water temperature in the heat supply network circulation line reach the heating demand, be transported to user side at last and carry out heat supply.
The cool circulation water that comes out from user side returns the heat supply network circulation line again and circulates.
Claims (1)
1. the Direct Air-cooled Unit exhausted spare heat reclaims heating system, comprise the direct air-cooling turbine group, by air cooling tubes condenser (3), the heat exchangers for district heating (2) that is connected with direct air-cooling turbine group admission end and heat supply network circulation line (4) that blow-off line is connected with direct air-cooling turbine group exhaust steam end, it is characterized in that: be connected with the clammy condenser of high back pressure (5) by valve (6) on the blow-off line between described direct air-cooling turbine group and the air cooling tubes condenser; The heat supply network circulation line connects heat exchangers for district heating (2) through the clammy condenser of high back pressure (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201356142U CN202074601U (en) | 2011-05-03 | 2011-05-03 | Steam exhausting, waste heat recovering and heating system of direct air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201356142U CN202074601U (en) | 2011-05-03 | 2011-05-03 | Steam exhausting, waste heat recovering and heating system of direct air cooling unit |
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| Publication Number | Publication Date |
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| CN202074601U true CN202074601U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201356142U Expired - Fee Related CN202074601U (en) | 2011-05-03 | 2011-05-03 | Steam exhausting, waste heat recovering and heating system of direct air cooling unit |
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| CN (1) | CN202074601U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615291A (en) * | 2013-12-17 | 2014-03-05 | 山东泓奥电力科技有限公司 | Flutter monitoring and early warning protection system for last-stage blade during high back pressure operation of air cooling unit |
| CN105953286A (en) * | 2016-06-25 | 2016-09-21 | 郝炜 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
| CN108302590A (en) * | 2016-10-09 | 2018-07-20 | 上海漕泾热电有限责任公司 | Heat supply network user terminal steam supplementary heating system based on light-electricity complementary and control method |
| CN109578096A (en) * | 2018-07-27 | 2019-04-05 | 华电重工股份有限公司 | A kind of steam turbine high back pressure heat supply power generating simultaneously system |
| CN110131919A (en) * | 2019-04-02 | 2019-08-16 | 深圳市奥宇节能技术股份有限公司 | The recovery method of cooling circulating water waste heat |
| CN111520792A (en) * | 2020-04-29 | 2020-08-11 | 北京国电蓝天节能科技开发有限公司 | Dead steam waste heat recovery and heat supply system and method for direct air cooling unit |
-
2011
- 2011-05-03 CN CN2011201356142U patent/CN202074601U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615291A (en) * | 2013-12-17 | 2014-03-05 | 山东泓奥电力科技有限公司 | Flutter monitoring and early warning protection system for last-stage blade during high back pressure operation of air cooling unit |
| CN103615291B (en) * | 2013-12-17 | 2016-03-02 | 山东泓奥电力科技有限公司 | Air-cooled Unit high back pressure runs exhaust stage blade monitoring chatter early warning protection system |
| CN105953286A (en) * | 2016-06-25 | 2016-09-21 | 郝炜 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
| CN108302590A (en) * | 2016-10-09 | 2018-07-20 | 上海漕泾热电有限责任公司 | Heat supply network user terminal steam supplementary heating system based on light-electricity complementary and control method |
| CN109578096A (en) * | 2018-07-27 | 2019-04-05 | 华电重工股份有限公司 | A kind of steam turbine high back pressure heat supply power generating simultaneously system |
| CN110131919A (en) * | 2019-04-02 | 2019-08-16 | 深圳市奥宇节能技术股份有限公司 | The recovery method of cooling circulating water waste heat |
| CN110131919B (en) * | 2019-04-02 | 2021-02-05 | 深圳市奥宇节能技术股份有限公司 | Method for recovering waste heat of cooling circulating water |
| CN111520792A (en) * | 2020-04-29 | 2020-08-11 | 北京国电蓝天节能科技开发有限公司 | Dead steam waste heat recovery and heat supply system and method for direct air cooling unit |
| CN111520792B (en) * | 2020-04-29 | 2021-07-30 | 国电龙源节能技术有限公司 | Exhaust steam waste heat recovery and heat supply method for direct air cooling unit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20120503 |