CN204960997U - Waste heat turbo generator set - Google Patents
Waste heat turbo generator set Download PDFInfo
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- CN204960997U CN204960997U CN201520720372.1U CN201520720372U CN204960997U CN 204960997 U CN204960997 U CN 204960997U CN 201520720372 U CN201520720372 U CN 201520720372U CN 204960997 U CN204960997 U CN 204960997U
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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 discloses a waste heat turbo generator set, including exhaust -heat boiler, steam turbine, generator, the steam turbine has high -pressure flow passage and middle and low voltage flow passage, this unit still includes external re -heater, the steam of exhaust -heat boiler output gets into high -pressure through -flow acting, and high -pressure through -flow steam extraction returns external re -heater and heats once more, and reheat steam gets into the acting of middle and low voltage flow passage, and middle and low voltage flow passage steam extraction returns exhaust -heat boiler after the condensation produces steam again. It can reduce the transformation cost by a wide margin under the condition that obtains equal generated power, shorten the transformation cycle.
Description
Technical field
The utility model relates to cogeneration technology, specifically, is a kind of waste heat Turbo-generator Set.
Background technique
Waste heat Turbo-generator Set is widely used in the industries such as iron and steel, petrochemical industry, papermaking, cement, and utilize cogeneration, electric motor power is usually less than 100MW, and system forms primarily of exhaust heat boiler, steam turbine, generator and relevant supplementary equipment.Conventional afterheat generating system is the simplest Steam Power Circulation, is made up of the several main device of water pump, boiler, steam turbine and condenser.The T-S figure of typical case's cogeneration Steam Power Circulation as shown in Figure 1.Water is boosted (3 → 4) by compression in water pump, then boiler is entered by heat vaporized (4 → 5 → 6), until after becoming superheated vapor (6 → 1), enter turbine expansion work done (1 → 2), low pressure steam after work done enters that condenser is cooled condenses into water (2 → 3), completes a circulation.From thermodynamic principle, resuperheat improves average endothermic temperature, elevator system cycle efficiency, increases the effective means of generated energy.Resuperheat is equivalent to, under the condition of equal steam flow, add the energy that system absorbs from high temperature heat source, thus increases steam turbine acting ability, adds the electricity that generator sends.Meanwhile, for whole system, after adopting steam resuperheat, not only make exhaust steam mass dryness fraction improve, and make steam under the prerequisite of for once condensation heat, absorb heat in boiler for twice, and twice is done work in steam turbine, thermal efficiency of cycle is improved.Adopt reheat vapor cycle, not only increase thermal efficiency of cycle and reduce exhaust steam humidity, namely improve Economy and the Security of unit.Resuperheat Steam Power Circulation T-S schemes as shown in Figure 2.
Just because of this, Large-scale machine set generally have employed the endless form of resuperheat.In recent years, along with the increase day by day of energy-saving and emission-reduction pressure, and the pursuit that power plant is harsher to economic benefit, also there is the trend adopting resuperheat circulation in the new-built unit below 100MW grade.Meanwhile, the selection that reheating transformation is also more and more service power plant is carried out to existing unit.
At present, the general fashion of reheating transformation is that former address is removed, and dilatation is rebuild.Need original exhaust heat boiler of dismantling in transformation, the reheating boiler that new order capacity is larger, change corresponding civil engineering according to the profile of new reheating boiler simultaneously; To dismantle original steam turbine, newly order more powerful reheat turbine, change the layout of steam turbine building simultaneously, need change steam turbine basis if desired; Change more powerful generator; Change corresponding pipeline and supplementary equipment.After transformation, system as shown in Figure 3.Improved system, first new exhaust heat boiler steam out enter the acting of turbine high-pressure part, after completing high-pressure section acting, extract out in the middle part of steam turbine, again steam is led back boiler, heated by reheater, by steam heating to the superheated vapor higher or more equal than main steam temperature, and then send back in steam turbine, low pressure flow passage part continue expansion working.The maximum feature of this transformation needs to change exhaust heat boiler, and exhaust heat boiler is the equipment that in three large main frames, price is the most expensive, and boiler structure size greatly, and civil engineering cost is high, long construction period, causes that the investment of whole improvement project is high, the cycle is long.
Summary of the invention
For above problem, the utility model provides a kind of waste heat Turbo-generator Set.When obtaining equal generated output, significantly can reduce reforming cost, shortening the transformation cycle.
Technical solution of the present utility model is:
A kind of waste heat Turbo-generator Set, comprise exhaust heat boiler, steam turbine, generator, described steam turbine has high pressure flow part and mesolow flow passage component; It is characterized in that, this unit also comprises external reheater, the steam of described exhaust heat boiler output enters the acting of high pressure flow part, high pressure flow part steam discharge returns external reheater and again heats, reheated steam enters the acting of mesolow flow passage component, and mesolow flow passage component steam discharge returns exhaust heat boiler producing steam again after condensation.
This unit also comprises vapour condenser and feed water pump, and described vapour condenser is used for the steam discharge of condensation mesolow flow passage component, and described feed water pump is used for water of condensation blowback exhaust heat boiler producing steam again.
The beneficial effects of the utility model:
By the mode increasing external reheater, existing cogeneration unit is transformed, remain great majority and be worth higher equipment especially boiler and water supply system thereof, only changing steam turbine, generator, when increasing reheater, can send out electricity more, and the cycle efficiency of whole system can be improved.Obviously, for employing cogeneration enterprise, this reforming mode has the advantages such as short construction period, reforming cost is low, system reform workload is little, has great economic benefit.
Accompanying drawing explanation
Fig. 1 is that cogeneration Steam Power Circulation T-S schemes
Fig. 2 is that resuperheat Steam Power Circulation T-S schemes
Fig. 3 is the improved afterheat generating system figure of reforming mode in the past
Fig. 4 is the improved a kind of afterheat generating system figure of the utility model.
Embodiment
See Fig. 4: a kind of waste heat Turbo-generator Set, comprise exhaust heat boiler 1, steam turbine 2, generator 3, described steam turbine 2 has high pressure flow part and mesolow flow passage component; This unit also comprises external reheater 4, the steam of described exhaust heat boiler 1 output enters the acting of high pressure flow part, high pressure flow part steam discharge returns external reheater 4 and again heats, reheated steam enters the acting of mesolow flow passage component, mesolow flow passage component steam discharge enters the acting of mesolow flow passage component through reheated steam, the steam discharge of mesolow flow passage component after vapour condenser 5 condensation, by feed water pump 6 blowback exhaust heat boiler 1 producing steam again.
The remodeling method of above-mentioned unit, retains exhaust heat boiler, sets up an external reheater in boiler room, remove former steam turbine, arrange a more powerful single reheat steam turbine in former address, remove former generator, arrange the generator of a power and steam turbine adaptation in former address.
Claims (2)
1. a waste heat Turbo-generator Set, comprises exhaust heat boiler, steam turbine, generator, and described steam turbine has high pressure flow part and mesolow flow passage component; It is characterized in that, this unit also comprises external reheater, the steam of described exhaust heat boiler output enters the acting of high pressure flow part, high pressure flow part steam discharge returns external reheater and again heats, reheated steam enters the acting of mesolow flow passage component, and mesolow flow passage component steam discharge returns exhaust heat boiler producing steam again after condensation.
2. waste heat Turbo-generator Set as claimed in claim 1, it is characterized in that, this unit also comprises vapour condenser and feed water pump, and described vapour condenser is used for the steam discharge of condensation mesolow flow passage component, and described feed water pump is used for water of condensation blowback exhaust heat boiler producing steam again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520720372.1U CN204960997U (en) | 2015-09-17 | 2015-09-17 | Waste heat turbo generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520720372.1U CN204960997U (en) | 2015-09-17 | 2015-09-17 | Waste heat turbo generator set |
Publications (1)
| Publication Number | Publication Date |
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| CN204960997U true CN204960997U (en) | 2016-01-13 |
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| CN201520720372.1U Active CN204960997U (en) | 2015-09-17 | 2015-09-17 | Waste heat turbo generator set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439639A (en) * | 2019-03-30 | 2019-11-12 | 上海康恒环境股份有限公司 | A kind of garbage power system with external independent reheater |
| CN110608432A (en) * | 2019-03-30 | 2019-12-24 | 上海康恒环境股份有限公司 | Household garbage incineration waste heat boiler steam reheating system adopting main steam for heating |
-
2015
- 2015-09-17 CN CN201520720372.1U patent/CN204960997U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439639A (en) * | 2019-03-30 | 2019-11-12 | 上海康恒环境股份有限公司 | A kind of garbage power system with external independent reheater |
| CN110608432A (en) * | 2019-03-30 | 2019-12-24 | 上海康恒环境股份有限公司 | Household garbage incineration waste heat boiler steam reheating system adopting main steam for heating |
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