CN1076431C - Composite condensate heating power system for turbogenerator - Google Patents
Composite condensate heating power system for turbogenerator Download PDFInfo
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- CN1076431C CN1076431C CN97101145A CN97101145A CN1076431C CN 1076431 C CN1076431 C CN 1076431C CN 97101145 A CN97101145 A CN 97101145A CN 97101145 A CN97101145 A CN 97101145A CN 1076431 C CN1076431 C CN 1076431C
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Abstract
The present invention relates to an improvement of a turbine generator condensate system, which is characterized in that a cold source loss utilization ratio device is additionally arranged in the existing condensate system, an auxiliary condensate pump and a water-water exchanger are arranged between a condenser and a mixed heat exchanger, and the mixed heat exchanger is arranged between an original steam driven water feed turbine wheel and a primary condensate pump. After the mixed heat exchanger is adopted, not only host condensate is heated, but also small turbine exhaust steam is coagulated, and the host drainage can automatically flow in the mixed heat exchanger. Compared with the prior art, the present invention has the advantages of reduced investment, increased host efficiency, easy maintenance, high safety and reliability, etc., and has a better effect using on a large steam turbine generator.
Description
The invention belongs to mechanical engineering technical field, be specifically related to the technological improvement of a kind of steam turbine generator composite condensate system.
The steam that existing steam turbine generator condensate system is finished merit by low pressure (LP) cylinder enters vapour condenser 1 cooling, cooled water of condensation comes together in condenser hotwell, pump is at first sent into gland heater through the desalination polishing unit by condensing, enter low-pressure heater more successively, the water of condensation of coming out from low-pressure heater enters oxygen-eliminating device and carries out deoxygenation, heating after after boiler feed pump boosts, enter 3#, 2#, the 1# high-pressure heater is sent into boiler after heating successively.Its vapour condenser also accept from axle add hydrophobic and hydrophobic step by step from flowing to the hydrophobic of final stage low-pressure heater, and the steam discharge of the little steamer of steam feed pump etc.This system is owing to steam feed pump steam turbine steam discharge, and low-pressure heater is hydrophobic, and axle adds hydrophobic its heat and all do not utilize, and is lost, and has especially also influenced the efficient of main frame.
The objective of the invention is to save energy and reduce the cost, improve a kind of steam turbine generator composite condensate system of unit heat energy utilization.
The present invention realizes like this, a kind of composite condensate heating power system for turbogenerator, the steamer of being finished merit by low pressure (LP) cylinder LP cools off, cooled water of condensation comes together in condenser hotwell, pump is at first sent into gland heater behind demineralized water treatment device desalination by condensing, enter low-pressure heater more successively, the steam of the used heating of low-pressure heater is respectively from eight sections of low pressure (LP) cylinder, seven sections, six sections, five sections are drawn gas, and the water of condensation of coming out from low-pressure heater enters oxygen-eliminating device and carries out deoxygenation, heating after boiler feed pump boost, enter 3#, 2#, the 1# high-pressure heater is sent into boiler after heating successively, it is characterized in that increasing in the composite condensate system cold source energy utilization ratio device, by the auxiliary pump that condenses, water-water exchanger, water turbine, hybrid heater is formed, the auxiliary pump that condenses, water-water exchanger is contained between coagulator and the hybrid heater, and hybrid heater is contained between steam feed pump small turbine and the main condensate pump.
The steam that composite condensate thermodynamic system of the present invention is finished merit by low pressure (LP) cylinder enters vapour condenser and cools off, deliver to water turbine work done step-down after nozzle ejection with the steam discharge of feed water pump small turbine hybrid heater in mix by auxiliary condensate pump through the water-water exchanger of field mounted temperature controller from the water of condensation that condenser hotwell comes out, mixed water of condensation is through main condensate pump, at first send into Demineralizer, enter gland heater behind the desalination, enter low-pressure heater again, thereby make the steam feed pump small turbine, gland heater hydrophobic, and it is hydrophobic step by step from flowing to the hydrophobic of final stage low-pressure heater from flowing in the hybrid heater, chemistry filled water is then entered by the hybrid heater top, sprays through the hybrid heater nozzle.
After adopting hybrid heater, both heated the main frame water of condensation, and made the small turbine steam discharge obtain condensing again, and main frame is hydrophobic can flow in the hybrid heater certainly again.
Water turbine condenses with auxiliary that pump is coaxial to be connected, and the auxiliary pump wasted work minimum of condensing makes that again the pressure of nozzle ejection is more stable.
Water-water exchanger is to be used for controlling the small turbine exhaust temperature, and it is moved under the optimal economic operating mode.The circulating water system that water-water exchanger cooling water is got, outlet links to each other with the major cycle water inlet, makes the circulating water utilization ratio be improved.
For reduce investment outlay, simplified system, this system also can adopt low lift, the mixed flow pump of big flow replaces the auxiliary pump that condenses, and saves water turbine.
Effect of the present invention and advantage:
(1), not cold source energy, owing to drive the small turbine of feed water pump thus improved the internal efficiency of small turbine greatly.
(2), the steam discharge of small turbine heated the water of condensation of main frame, and main frame is hydrophobic step by step from flowing in the final stage hybrid heater, and the thermal efficiency of main frame is improved.
(3), be kept to zero owing to adopted hybrid heater to make the small turbine steam discharge enter hybrid heater end difference.
(4), owing to after having adopted hybrid heater, make condensate undercooling reduce to zero, thereby oxygen content of condensate reduced greatly, make low-pressure heater to oxygen-eliminating device pipeline and equipment avoid corrosion.Alleviated the burden of oxygen-eliminating device simultaneously, made unit safer, economical.
(5), because directly linking to each other with hybrid heater, little steamer steam discharge make the steam discharge crushing reduce.
(6), because the raising of small turbine exhaust steam pressure, the increase of throttle flow, its admission crushing is reduced.
(7), small turbine and the feed water pump fault that dragged can not influence main frame efficient.
(8), seasonal adaptation strong (winter, efficient was particularly outstanding).
(9), the pump operation that condenses more reliably improves aft engine efficient and can improve O.98% by calculating.
Description of drawings:
Fig. 1 is a composite condensate heating power system for turbogenerator.
Fig. 2 is existing 300MW steam turbine generator water of condensation thermodynamic system;
Label declaration:
1, vapour condenser 2, the pump 3 that condenses, demineralized water treatment device 4, gland heater 5,6,7,8 are low-pressure heater 9, oxygen-eliminating device 10, steam feed pump small turbine 11, high intermediate pressure cylinder 12, low pressure (LP) cylinder 13, auxiliary condense pump 14, water-water exchanger 15, water turbine 16, hybrid heater.
With reference to the accompanying drawings embodiment is done further detailed description, the present invention be in the D300H steam turbine generator condensate system of introducing US Westinghouse company's technology manufacturing, carry out improved, have additional the auxiliary pump 13 that condenses in the composite condensate heating power system for turbogenerator and can select the existing pump that condenses for use, water turbine 15 selects the water turbine of a flow 900T/h, its hybrid heater can be selected the direct-contact type condenser of a 1000T/H flow for use, the auxiliary pump 13 that condenses, water-water exchanger 14 is contained between coagulator 1 and the hybrid heater 16, hybrid heater 16 is contained between steam feed pump small turbine 10 and the main condensate pump 2; During work, the steam that low pressure (LP) cylinder 12 is finished merit enters vapour condenser 1 and cools off; Deliver to water turbine 15 work done step-downs after nozzle ejection with the steam discharge of feed water pump small turbine 10 hybrid heater 16 in mix by the auxiliary pump 13 that condenses through the water-water exchanger 14 of field mounted temperature control station from the water of condensation that condenser hotwell comes out, mixed water of condensation is at first delivered to Demineralizer 3 through main condensate pump 2, enter gland heater 4 behind the desalination, enter low-pressure heater 5 again, 6,7,8, at this moment, steam feed pump small turbine 10, hydrophobic and the hydrophobic final stage low-pressure heater 5 that flow to certainly step by step of gland heater 4,6,7,8 hydrophobic from flowing in the hybrid heater 16, chemistry replenishes and is then entered by hybrid heater 16 tops, spray through the hybrid heater nozzle.Utilization efficiency can be better on the 600MW unit in this system.
Claims (1)
1, a kind of composite condensate heating power system for turbogenerator, the steam of finishing merit by low pressure (LP) cylinder LP enters vapour condenser (1) and cools off, cooled water of condensation comes together in condenser hotwell, pump is at first sent into gland heater (4) behind demineralized water treatment device (3) desalination by condensing, enter low-pressure heater (5# more successively, 6#, 7#, 8#) low-pressure heater (5#, 6#, 7#, 8#) steam of used heating is respectively from eight sections of low pressure (LP) cylinder, seven sections, six sections, five sections are drawn gas, the water of condensation of coming out from low-pressure heater enters oxygen-eliminating device (9) and carries out deoxygenation, heat after boiler feed pump boosts, enter 3#, 2#, the 1# high-pressure heater is sent into boiler after heating successively, it is characterized in that increasing in the composite condensate system cold source energy utilization ratio device, by the auxiliary pump (13) that condenses, water one water exchanger (14), water turbine (15), hybrid heater (16) is formed, the auxiliary pump (13) that condenses, water one water exchanger (14), be contained between coagulator and the hybrid heater (16), hybrid heater (16) is contained between steam feed pump small turbine (10) and the main condensate pump (2), deliver to water turbine (15) work done step-down after nozzle ejection with the steam discharge of feed water pump small turbine (10) hybrid heater (16) in mix by auxiliary condensate pump (13) through the water one water exchanger (14) of field mounted temperature control station from the water of condensation that condenser hotwell comes out, thereby make the hydrophobic of gland heater (4), and it is hydrophobic step by step from flowing to final stage low-pressure heater (5,6,7,8) hydrophobic from flowing in the hybrid heater (16), chemistry filled water is then entered by hybrid heater (16) top, sprays through the hybrid heater nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101145A CN1076431C (en) | 1997-01-31 | 1997-01-31 | Composite condensate heating power system for turbogenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101145A CN1076431C (en) | 1997-01-31 | 1997-01-31 | Composite condensate heating power system for turbogenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1164609A CN1164609A (en) | 1997-11-12 |
| CN1076431C true CN1076431C (en) | 2001-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97101145A Expired - Fee Related CN1076431C (en) | 1997-01-31 | 1997-01-31 | Composite condensate heating power system for turbogenerator |
Country Status (1)
| Country | Link |
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| CN (1) | CN1076431C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899999A (en) * | 2009-05-31 | 2010-12-01 | 中国电力工程顾问集团华东电力设计院 | Small turbine system in power plant and thermal cycle system in power plant containing same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845973B (en) * | 2010-04-30 | 2012-08-15 | 中广核工程有限公司 | Vertical pipe drainage system for turbine condenser |
| CN102322307A (en) * | 2011-06-18 | 2012-01-18 | 山西省电力勘测设计院 | Condensed water automatic discharging system of water-feeding pump steam turbine of direct air cooling unit |
| CN103266925A (en) * | 2013-05-10 | 2013-08-28 | 南京师范大学 | System and method for supplying motive power for auxiliary machinery of thermal power plant |
| CN103925019B (en) * | 2014-04-18 | 2015-05-13 | 国电科学技术研究院 | Matching method of supercritical secondary reheating unit reheater and thermal system |
| CN107676768A (en) * | 2017-10-27 | 2018-02-09 | 江苏永钢集团有限公司 | A kind of condensing turbine demineralized water water charging system |
| CN112302964B (en) * | 2020-10-29 | 2022-07-08 | 西安西热节能技术有限公司 | Method for measuring efficiency of independent condensing steam-driven water supply pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58211509A (en) * | 1982-06-03 | 1983-12-09 | Toshiba Corp | Condensor device |
| US4665706A (en) * | 1981-05-12 | 1987-05-19 | The Babcock & Wilcox Company | Control system for variable pressure once-through boilers |
| JPH02188605A (en) * | 1989-01-18 | 1990-07-24 | Yoshihide Nakamura | Compound fluid turbine plant |
| CN1101212A (en) * | 1993-01-29 | 1995-04-05 | Abb专利有限公司 | Process and device for operating the water-steam circuit of a thermoelectric power station |
-
1997
- 1997-01-31 CN CN97101145A patent/CN1076431C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665706A (en) * | 1981-05-12 | 1987-05-19 | The Babcock & Wilcox Company | Control system for variable pressure once-through boilers |
| JPS58211509A (en) * | 1982-06-03 | 1983-12-09 | Toshiba Corp | Condensor device |
| JPH02188605A (en) * | 1989-01-18 | 1990-07-24 | Yoshihide Nakamura | Compound fluid turbine plant |
| CN1101212A (en) * | 1993-01-29 | 1995-04-05 | Abb专利有限公司 | Process and device for operating the water-steam circuit of a thermoelectric power station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899999A (en) * | 2009-05-31 | 2010-12-01 | 中国电力工程顾问集团华东电力设计院 | Small turbine system in power plant and thermal cycle system in power plant containing same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1164609A (en) | 1997-11-12 |
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