CN212774444U - ORC waste heat power generation system - Google Patents
ORC waste heat power generation system Download PDFInfo
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- CN212774444U CN212774444U CN202021671764.0U CN202021671764U CN212774444U CN 212774444 U CN212774444 U CN 212774444U CN 202021671764 U CN202021671764 U CN 202021671764U CN 212774444 U CN212774444 U CN 212774444U
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Abstract
The utility model provides a ORC waste heat power generation system, working medium gets into working medium pump entry from the condenser, then through the working medium pump pressure boost, the pump goes into the pre-heater, and the working medium gets into the evaporimeter evaporation after the pre-heater preheats and is high-pressure steam, and the working medium of evaporation gets into turbine power generation sled piece inflation electricity generation, and the electricity of generating merges the electric wire netting through the system of being incorporated into the power networks, and the working medium after the inflation gets into the condenser condensation, and wherein the working medium pump sets up 3, and turbine power. The system can be applied to ORC waste heat power generation occasions and has the advantage of strong working condition adaptability.
Description
Technical Field
The utility model belongs to the technical field of ORC waste heat power generation, specifically speaking are ORC waste heat power generation system.
Background
ORC waste heat power generation is one of ten major energy-saving projects in the special project of the long-term development of energy conservation in China, and has been applied to the fields of steel plants, cement plants, chemical engineering and the like to a certain extent, the working principle of the ORC waste heat power generation is that an organic working medium absorbs heat to generate high-pressure steam to push a steam turbine, a water turbine or an expander to drive a generator to generate power, and because the efficiency and the flow relation of the steam turbine, the water turbine or the expander are close, when the steam quantity is only 50% or even 30% of a rated value, the power generation efficiency is low, and even the power generation power is possibly insufficient.
Disclosure of Invention
The utility model provides a when the steam volume only 50% of rated value even when 30%, the low problem of generating efficiency, and provide an ORC waste heat power generation system, can be applied to ORC waste heat power generation occasion, have the advantage that operating mode strong adaptability.
The utility model provides a technical scheme of problem is: an ORC waste heat power generation system comprises a condenser, at least two working medium pumps, a preheater, an evaporator and at least two turbine power generation pry blocks, wherein each working medium pump and each turbine power generation pry block are arranged in parallel; working medium enters an inlet of the working medium pump from the condenser, is pressurized through the working medium pump and is pumped into the preheater, the working medium enters the evaporator after being preheated by the preheater and is evaporated into high-pressure steam, the evaporated working medium enters the turbine power generation pry block for expansion power generation, the generated power is merged into a power grid through a grid-connected system, and the expanded working medium enters the condenser for condensation.
In the above scheme, the condenser adopts circulating cooling water as a cold source.
In the scheme, the heat sources of the preheater and the evaporator can adopt steam or a heat source with the temperature higher than 90 ℃, and the heat source is required to firstly enter the evaporator and then enter the preheater to form countercurrent heat transfer, so that the heat exchange efficiency is improved.
In the scheme, all pipelines from the preheater, the evaporator and the working medium to the turbine power generation skid block are subjected to heat preservation treatment.
In the above scheme, the working medium pumps are 3, wherein 1 is a standby pump, and the other two are started according to the working condition requirement. When the flow of the heat source is between 60 and 100 percent, the heat source is switched on, and when the flow is between 30 and 60 percent, the heat source is switched on.
In the scheme, the number of the turbine power generation prying blocks is 2, and the turbine power generation prying blocks are opened according to working condition requirements. When the flow of the heat source is between 60 and 100 percent, the heat source is switched on, and when the flow is between 30 and 60 percent, the heat source is switched on.
In the above scheme, the bypass of the working medium pump outlet is provided with the regulating valve, and the evaporation temperature of the evaporator is controlled by regulating the flow of the working medium.
The condenser is connected the pre-heater through each working medium pump, the condenser export and each working medium pump access connection, each working medium pump export is connected the pre-heater import, working medium pump export still even has the bypass pipeline, bypass pipeline tip and working medium pump import, the last governing valve that is used for adjusting the flow of working medium that sets up of bypass pipeline, pre-heater exit linkage evaporimeter import, each turbine electricity generation sled piece working medium entry of evaporimeter exit linkage, each turbine electricity generation sled piece working medium export and condenser working medium entry linkage, the electricity that each turbine electricity generation sled piece was generated is incorporated into the electric wire netting through the system of being incorporated into the power networks.
The pipelines connected between the preheater, the evaporator and the working medium secondary preheater and between the turbine power generation prying blocks are all provided with heat insulation layers.
The utility model discloses can be applied to ORC waste heat power generation occasion, have operating mode strong adaptability's advantage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In fig. 1, an ORC cogeneration system: working medium enters an inlet of a working medium pump 2 from a condenser 1, then is pressurized through the working medium pump 2 and is pumped into a preheater 3, the working medium enters an evaporator 4 after being preheated by the preheater 3 to be evaporated into high-pressure steam, the evaporated working medium enters a turbine power generation skid block 5 to be expanded and generated, the generated power is merged into a power grid through a grid-connected system 6, and the expanded working medium enters the condenser 1 to be condensed. The condenser 1 uses circulating cooling water as a cold source. The heat sources of the preheater 3 and the evaporator 4 can adopt steam or heat sources with the temperature higher than 90 ℃, and the heat sources are required to firstly enter the evaporator 4 and then enter the preheater 3. All pipelines from the preheater 3, the evaporator 4 and the working medium from the preheater 3 to the turbine power generation skid block 5 are required to be subjected to heat preservation treatment. Working medium pumps 2 are 3, wherein 1 is a standby pump, and the other two pumps are started according to working condition requirements. When the flow of the heat source is between 60 and 100 percent, the heat source is switched on, and when the flow is between 30 and 60 percent, the heat source is switched on. The number of the turbine power generation pry blocks 5 is 2, and the turbine power generation pry blocks are opened according to working condition requirements. When the flow of the heat source is between 60 and 100 percent, the heat source is switched on, and when the flow is between 30 and 60 percent, the heat source is switched on. An adjusting valve 7 is arranged at the bypass of the outlet of the working medium pump 2, and the evaporation temperature of the evaporator 5 is controlled by adjusting the flow of the working medium.
The scheme is further explained by the heat source shortage of a certain 250t/h hot water ORC waste heat power generation device.
The heat source condition flow is only 100t/h hot water, and conventional ORC waste heat power generation device generated energy is 80kW, and the energy consumption of circulating water pump, water tower fan, working medium pump is 30kW, 12kW, 50kW respectively, and under this condition, the electricity of generating is still not enough circulating water pump, water tower fan, working medium pump consumption, but adopts the utility model discloses the scheme can be driven according to following mode.
Working medium firstly flows out of the condenser 1 to the working medium pump 2, only one working medium pump 2 is started, the working medium pump 2 enables 20% of the pressurized working medium to flow back to the inlet of the working medium pump through the regulating valve 7, 80% of the working medium is pumped into the preheater 3, the preheated working medium enters the evaporator 4, the working medium enters the turbine power generation pry block 5 for expansion power generation after being evaporated, and the generated power is merged into a power grid through the grid-connected system 6.
After the vehicle is started, the generated energy is 100kW, the energy consumption of the circulating water pump, the water tower fan and the working medium pump is respectively 30kW, 12kW and 25kW, the total consumption is 67kW, and the net power generation amount is 33 kW.
Claims (9)
1. An ORC cogeneration system, characterized in that: the device comprises a condenser (1), at least two working medium pumps (2), a preheater (3), an evaporator (4) and at least two turbine power generation pry blocks (5), wherein each working medium pump (2) and each turbine power generation pry block (5) are arranged in parallel;
working medium gets into working medium pump (2) entry from condenser (1), then through working medium pump (2) pressure boost, pump income pre-heater (3), the working medium gets into evaporimeter (4) evaporation after pre-heater (3) preheats and is high pressure steam, and the working medium of evaporation gets into turbine power generation sled piece (5) expansion power generation, and the electric wire netting is incorporated into through grid-connected system (6) to the electricity of generating, and the working medium after the expansion gets into condenser (1) condensation.
2. The ORC cogeneration system of claim 1, wherein: the condenser (1) adopts circulating cooling water as a cold source.
3. The ORC cogeneration system of claim 1, wherein: the heat sources of the preheater (3) and the evaporator (4) adopt steam or heat sources with the temperature higher than 90 ℃, and the heat sources firstly enter the evaporator (4) and then enter the preheater (3).
4. The ORC cogeneration system of claim 1, wherein: the connection pipeline between the preheater (3), the evaporator (4) and the working medium from the preheater (3) to the turbine power generation pry block (5) is subjected to heat preservation treatment.
5. The ORC cogeneration system of claim 1, wherein: the working medium pumps (2) are 3, two are started when the flow of the heat source is 60-100%, and one is started when the flow is 30-60%.
6. The ORC cogeneration system of claim 1, wherein: 2 turbine power generation pry blocks (5) are arranged, two heat sources are started when the flow rate of the heat sources is 60% -100%, and one heat source is started when the flow rate is 30% -60%.
7. The ORC cogeneration system of claim 1, wherein: an adjusting valve (7) for adjusting the flow of the working medium is arranged at the bypass of the outlet of the working medium pump (2).
8. The ORC cogeneration system of claim 1, wherein: preheater (3) is connected through each working medium pump (2) in condenser (1), condenser (1) export and each working medium pump (2) access connection, each working medium pump (2) exit linkage preheater (3) import, working medium pump (2) export still even has the bypass pipeline, bypass pipeline tip and working medium pump (2) import, set up governing valve (7) that are used for adjusting the flow of working medium on the bypass pipeline, preheater (3) exit linkage evaporimeter (4) import, evaporimeter (4) exit linkage each turbine electricity generation sled piece (5) working medium entry, each turbine electricity generation sled piece (5) working medium export and condenser (1) working medium entry linkage, the electricity that each turbine electricity generation sled piece (5) was sent merges into the electric wire netting through grid-connected system (6).
9. The ORC cogeneration system of claim 1, wherein: the pipelines connected between the preheater (3), the evaporator (4) and the working medium slave preheater (3) and the turbine power generation pry block (5) are all provided with heat insulation layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021671764.0U CN212774444U (en) | 2020-08-12 | 2020-08-12 | ORC waste heat power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021671764.0U CN212774444U (en) | 2020-08-12 | 2020-08-12 | ORC waste heat power generation system |
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| CN212774444U true CN212774444U (en) | 2021-03-23 |
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| CN202021671764.0U Active CN212774444U (en) | 2020-08-12 | 2020-08-12 | ORC waste heat power generation system |
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