CN103321696A - Self-control heating supply system of thermal power plant - Google Patents
Self-control heating supply system of thermal power plant Download PDFInfo
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- CN103321696A CN103321696A CN2013101882654A CN201310188265A CN103321696A CN 103321696 A CN103321696 A CN 103321696A CN 2013101882654 A CN2013101882654 A CN 2013101882654A CN 201310188265 A CN201310188265 A CN 201310188265A CN 103321696 A CN103321696 A CN 103321696A
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- steam turbine
- thermal power
- pressure heater
- boiler
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Abstract
The invention discloses a self-control heating supply system of a thermal power plant. The self-control heating supply system comprises a condenser, a low-pressure heater, a deaerator, a high-pressure heater and a boiler which are sequentially communicated through pipes. A temperature sensor is arranged in the boiler, a rotation speed sensor is installed on a rotor of a steam turbine of the thermal power plant, and a magnetic valve is arranged on a pipe between an air inlet of the high-pressure heater and an air pumping port of a high pressure cylinder of the steam turbine of the thermal power plant. A pipe further bypasses between the air inlet of the high-pressure heater and the air pumping port of the high pressure cylinder of the steam turbine of the thermal power plant, a magnetic valve and an air pump are installed on the bypass pipe, a temperature sensor and the rotation speed sensor are connected to a central control central processing unit (CPU) through data acquisition units respectively, and the output end of the central control CPU is connected with the control ends of the magnetic valves respectively. The self-control heating supply system performs air supplement to a low pressure cylinder of the steam turbine according to rotation speed data of the rotor of the steam turbine and boiler temperature data, improves the stability of power generation work and can effectively reduce coal energy loss.
Description
Technical field
The present invention relates to thermal power generation heating system field, be specially a kind of thermal power generation automatic control heating system.
Background technique
As thermal source, heating water produces steam in boiler with coal in thermal power generation, utilizes steam to make the high, medium and low cylinder pressure acting of steam turbine, produces electric energy thereby drive generator.Prior art thermal power generation heating system is by vapour condenser, low-pressure heater, oxygen-eliminating device, high-pressure heater, boiler consists of, after steam enters vapour condenser and is condensed into water in the low pressure (LP) cylinder, successively through the low-pressure heater heating, the oxygen-eliminating device deoxygenation, send into boiler after the high-pressure heater heating, wherein high-pressure heater is pumped steam heating from high-pressure cylinder, low-pressure heater is pumped steam heating from intermediate pressure cylinder, water is heated to steam condition in boiler after, send into the steam turbine high-pressure cylinder acting, steam after the acting again enters and sends into the intermediate pressure cylinder acting in the boiler after the heating, then send into the low pressure (LP) cylinder acting by intermediate pressure cylinder, send into vapour condenser from low pressure (LP) cylinder at last and finish a circulation.The heating system of this structure can satisfy thermal power generation steam turbine air supply requirement, but can't carry out steam compensation control to low pressure (LP) cylinder in conjunction with steam tolerance situation in turbine rotor rotation situation and the boiler.
Summary of the invention
The purpose of this invention is to provide a kind of thermal power generation automatic control heating system, can't be to the problem of low pressure (LP) cylinder steam auto-compensation to solve prior art thermal power generation heating system.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of thermal power generation automatic control heating system, include successively the vapour condenser by pipeline connection, low-pressure heater, oxygen-eliminating device, high-pressure heater, boiler, described boiler is by the height of different supply air lines difference air feed to Steam Turbine in Fire Power Plant, intermediate pressure cylinder, there is suction port to pump gas port by the intermediate pressure cylinder that pipeline is switched to Steam Turbine in Fire Power Plant on the described low-pressure heater, there is suction port to pump gas port by the high-pressure cylinder that pipeline is switched to Steam Turbine in Fire Power Plant on the high-pressure heater, it is characterized in that: be provided with temperature transducer in the described boiler, the coaxial speed probe that is equipped with on the rotor of Steam Turbine in Fire Power Plant, the high-pressure cylinder of described high-pressure heater suction port and Steam Turbine in Fire Power Plant is pumped solenoid valve is installed on the pipeline between the gas port, the high-pressure cylinder of high-pressure heater suction port and Steam Turbine in Fire Power Plant is pumped between the gas port on the pipeline also, and bypass has pipeline, bypass conduit is switched to the thermal power plant low pressure (LP) cylinder, and solenoid valve is installed on the bypass conduit, air pump, also include center control CPU, and the data acquisition unit of access center control CPU, described temperature transducer, speed probe is respectively by data acquisition unit access center control CPU, and the output terminal of center control CPU is connected with the electromagnetic valve end respectively.
Described a kind of thermal power generation automatic control heating system, it is characterized in that: described temperature transducer is thermocouple temperature sensor.
Described a kind of thermal power generation automatic control heating system is characterized in that: also have access to power module and human-computer interaction module on the described center control CPU.
Among the present invention, center control CPU obtains the boiler temperature data that temperature transducer detects, the turbine rotor rotary speed data that speed probe detects, descend when rotor speed occurring, and boiler temperature is constant or when raising, need not add coal this moment to boiler, pump the disconnection of the solenoid valve on the pipeline between the gas port by the high-pressure cylinder of center control CPU control high-pressure heater suction port and Steam Turbine in Fire Power Plant, stop to pump steam heating to high-pressure heater, simultaneously center control CPU control is switched to solenoid valve conduction on the bypass conduit of thermal power plant low pressure (LP) cylinder, steam is entered carry out tolerance in the low pressure (LP) cylinder to replenish.
The present invention carries out tolerance to turbine low pressure cylinder and replenishes according to turbine rotor rotary speed data and boiler temperature data, has improved the stability of generating work, and can effectively reduce the Coal Energy Source loss.
Description of drawings
Fig. 1 is system architecture schematic diagram of the present invention.
Fig. 2 is control section electrical principle block diagram of the present invention.
Embodiment
As shown in Figure 1 and Figure 2.A kind of thermal power generation automatic control heating system, include the vapour condenser 1 that passes through successively pipeline connection, low-pressure heater 2, oxygen-eliminating device 3, high-pressure heater 4, boiler 5, boiler 5 is by the height of different supply air lines difference air feed to Steam Turbine in Fire Power Plant, intermediate pressure cylinder 6,7, there is suction port to pump gas port by the intermediate pressure cylinder 7 that pipeline is switched to Steam Turbine in Fire Power Plant on the low-pressure heater 2, there is suction port to pump gas port by the high-pressure cylinder 6 that pipeline is switched to Steam Turbine in Fire Power Plant on the high-pressure heater 4, be provided with temperature transducer 8 in the boiler 5, the coaxial speed probe 9 that is equipped with on the rotor of Steam Turbine in Fire Power Plant, the high-pressure cylinder 6 of high-pressure heater 4 suction ports and Steam Turbine in Fire Power Plant is pumped solenoid valve 10 is installed on the pipeline between the gas port, the high-pressure cylinder 6 of high-pressure heater 4 suction ports and Steam Turbine in Fire Power Plant is pumped between the gas port on the pipeline also, and bypass has pipeline, bypass conduit is switched to thermal power plant low pressure (LP) cylinder 11, and solenoid valve 12 is installed on the bypass conduit, air pump 13, also include center control CPU14, and the data acquisition unit of access center control CPU14, temperature transducer 8, speed probe 9 is respectively by data acquisition unit access center control CPU14, the output terminal of center control CPU14 respectively with solenoid valve 10,12 control ends connect.
Temperature transducer 8 is thermocouple temperature sensor.
Also have access to power module and human-computer interaction module on the center control CPU14.
Claims (3)
1. thermal power generation automatic control heating system, include successively the vapour condenser by pipeline connection, low-pressure heater, oxygen-eliminating device, high-pressure heater, boiler, described boiler is by the height of different supply air lines difference air feed to Steam Turbine in Fire Power Plant, intermediate pressure cylinder, there is suction port to pump gas port by the intermediate pressure cylinder that pipeline is switched to Steam Turbine in Fire Power Plant on the described low-pressure heater, there is suction port to pump gas port by the high-pressure cylinder that pipeline is switched to Steam Turbine in Fire Power Plant on the high-pressure heater, it is characterized in that: be provided with temperature transducer in the described boiler, the coaxial speed probe that is equipped with on the rotor of Steam Turbine in Fire Power Plant, the high-pressure cylinder of described high-pressure heater suction port and Steam Turbine in Fire Power Plant is pumped solenoid valve is installed on the pipeline between the gas port, the high-pressure cylinder of high-pressure heater suction port and Steam Turbine in Fire Power Plant is pumped between the gas port on the pipeline also, and bypass has pipeline, bypass conduit is switched to the thermal power plant low pressure (LP) cylinder, and solenoid valve is installed on the bypass conduit, air pump, also include center control CPU, and the data acquisition unit of access center control CPU, described temperature transducer, speed probe is respectively by data acquisition unit access center control CPU, and the output terminal of center control CPU is connected with the electromagnetic valve end respectively.
2. a kind of thermal power generation automatic control heating system according to claim 1, it is characterized in that: described temperature transducer is thermocouple temperature sensor.
3. a kind of thermal power generation automatic control heating system according to claim 1 is characterized in that: also have access to power module and human-computer interaction module on the described center control CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188265.4A CN103321696B (en) | 2013-05-20 | 2013-05-20 | A kind of thermal power generation automatic control heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188265.4A CN103321696B (en) | 2013-05-20 | 2013-05-20 | A kind of thermal power generation automatic control heating system |
Publications (2)
| Publication Number | Publication Date |
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| CN103321696A true CN103321696A (en) | 2013-09-25 |
| CN103321696B CN103321696B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310188265.4A Expired - Fee Related CN103321696B (en) | 2013-05-20 | 2013-05-20 | A kind of thermal power generation automatic control heating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527269A (en) * | 2013-10-11 | 2014-01-22 | 上海电力学院 | Steam-turbine combined intermediate reheating quasi-Carnot-cycle thermal power generation system |
| CN105781641A (en) * | 2015-07-04 | 2016-07-20 | 江曼 | Power generation device and power grid synchronous control method |
| CN114352365A (en) * | 2021-12-30 | 2022-04-15 | 华能沁北发电有限责任公司 | Online steam turbine heat rate monitoring device and method for thermal power plant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352321B (en) * | 2016-09-14 | 2019-04-26 | 上海明华电力技术工程有限公司 | The method that excision high-pressure heater participates in unit primary frequency modulation is bypassed based on water side |
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| CN2731111Y (en) * | 2004-08-31 | 2005-10-05 | 天津市电力科技发展公司 | Three-low cylinder three-exhausting condensing type turbine set thermoelectric combined generation device |
| CN102392700A (en) * | 2011-08-23 | 2012-03-28 | 福建省石狮热电有限责任公司 | Novel backpressure turbine with low vacuum regenerative heat |
| CN102588938A (en) * | 2012-02-14 | 2012-07-18 | 西安热工研究院有限公司 | Energy-saving quick power regulating system of thermal generator set and method |
| RU2461723C1 (en) * | 2011-02-25 | 2012-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" | Thermal power plant |
| CN103016083A (en) * | 2012-12-26 | 2013-04-03 | 北京国电蓝天节能科技开发有限公司 | Back pressure and straight condensing switching heat supply system |
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- 2013-05-20 CN CN201310188265.4A patent/CN103321696B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2731111Y (en) * | 2004-08-31 | 2005-10-05 | 天津市电力科技发展公司 | Three-low cylinder three-exhausting condensing type turbine set thermoelectric combined generation device |
| RU2461723C1 (en) * | 2011-02-25 | 2012-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" | Thermal power plant |
| CN102392700A (en) * | 2011-08-23 | 2012-03-28 | 福建省石狮热电有限责任公司 | Novel backpressure turbine with low vacuum regenerative heat |
| CN102588938A (en) * | 2012-02-14 | 2012-07-18 | 西安热工研究院有限公司 | Energy-saving quick power regulating system of thermal generator set and method |
| CN103016083A (en) * | 2012-12-26 | 2013-04-03 | 北京国电蓝天节能科技开发有限公司 | Back pressure and straight condensing switching heat supply system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527269A (en) * | 2013-10-11 | 2014-01-22 | 上海电力学院 | Steam-turbine combined intermediate reheating quasi-Carnot-cycle thermal power generation system |
| CN105781641A (en) * | 2015-07-04 | 2016-07-20 | 江曼 | Power generation device and power grid synchronous control method |
| CN105781641B (en) * | 2015-07-04 | 2018-03-20 | 佛山恒益发电有限公司 | Thermal power plant generating equipment and synchronized control method |
| CN114352365A (en) * | 2021-12-30 | 2022-04-15 | 华能沁北发电有限责任公司 | Online steam turbine heat rate monitoring device and method for thermal power plant |
| CN114352365B (en) * | 2021-12-30 | 2023-04-25 | 华能沁北发电有限责任公司 | Device and method for monitoring heat consumption rate of online steam turbine of thermal power plant |
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| Publication number | Publication date |
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| CN103321696B (en) | 2015-12-02 |
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Effective date of registration: 20180831 Address after: 223800 Jiangsu Suqian Shuyang Economic Development Zone Hangzhou East Road and jade ring road intersection. Patentee after: JIANGSU NEW POWER (MUYANG) THERMOELECTRICITY Co.,Ltd. Address before: 233000 No. 103, Zhong Rong Street, Culture Museum, bengshan mountain, Bengbu, Anhui Patentee before: Gu Jin |
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Granted publication date: 20151202 |