CN215333024U - Comprehensive cooling system for waste heat power generation of internal combustion engine set - Google Patents
Comprehensive cooling system for waste heat power generation of internal combustion engine set Download PDFInfo
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- CN215333024U CN215333024U CN202121991571.8U CN202121991571U CN215333024U CN 215333024 U CN215333024 U CN 215333024U CN 202121991571 U CN202121991571 U CN 202121991571U CN 215333024 U CN215333024 U CN 215333024U
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Abstract
The utility model belongs to the technical field of environmental protection and energy conservation, and particularly relates to a comprehensive cooling system for waste heat power generation of an internal combustion engine set, which comprises the internal combustion engine set, an ORC power generation system, a heat source water pipeline, a cooling water pipeline and water cooling equipment; the heat source water pipeline comprises a heat source water outlet pipeline and a heat source water return pipeline; the cooling water pipeline comprises a cooling water outlet pipeline and a cooling water return pipeline; the heat source water outlet of the internal combustion engine set is respectively connected with inlets of an ORC power generation system and water cooling equipment through a heat source water outlet pipeline, and outlets of the ORC power generation system and the water cooling equipment are respectively connected with a heat source water inlet of the internal combustion engine set through a heat source water return pipeline; ORC power generation system passes through the cooling water outlet conduit and is connected with the entry of water cooling equipment, the export of water cooling equipment passes through the cooling water return water pipeline and is connected with ORC power generation system. The utility model effectively reduces the self-consumption of the system, improves the power generation efficiency and improves the comprehensive utilization rate of energy.
Description
Technical Field
The utility model belongs to the technical field of environmental protection and energy conservation, and particularly relates to a comprehensive cooling system for waste heat power generation of an internal combustion engine set.
Background
An internal combustion engine set is a power generation device which utilizes primary energy such as fuel oil, fuel gas and the like as fuel, the power generation efficiency is generally about 30-40%, and most energy is directly discharged into the atmosphere in the form of heat. With the change of production processes and the gradual improvement of technological level, the medium-temperature or high-temperature waste heat power generation technology is mature in China, Organic Rankine Cycle (ORC) power generation is a waste heat power generation technology developed for adapting to the available heat source (the working principle of the technology is shown in figure I), and the combination of an ORC power generation system is an effective method for indirectly improving the power generation efficiency of an internal combustion engine set. However, the waste heat utilization efficiency of the internal combustion engine set of the existing ORC power generation system is generally low, the main reason is that the system design is unreasonable, and because the waste heat parameters of the internal combustion engine set are changed within a certain range, if the waste heat of the internal combustion engine set is utilized to drive the ORC power generation system to generate power, when the ORC power generation system has excess waste heat or equipment failure and during maintenance, a radiator of the internal combustion engine set is still adopted to dissipate heat, so that not only is the energy waste caused, but also the self-consumption of the internal combustion engine set is increased; in addition, the heat dissipation mode of an internal combustion engine set or an ORC power generation system is generally air cooling, the mode is greatly influenced by the temperature of the external environment, particularly, the heat dissipation effect in summer is poor, the heat dissipation capacity required by the power generation set can be achieved only by increasing the number of the heat radiators, the self-power consumption of the power generation system is increased to a certain extent, the comprehensive energy utilization efficiency of the system is reduced, when the temperature is low in winter, the working medium in the heat exchange tubes of the heat radiators is easy to freeze, so that the heat exchange tubes are cracked, the maintenance cost is increased, and the operation cost can be increased if the anti-freezing solution is directly adopted. Therefore, aiming at the defects of the waste heat ORC power generation system of the existing internal combustion engine set, a new technical route is sought through technical innovation, and the comprehensive utilization efficiency of energy is improved.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a comprehensive cooling system for waste heat power generation of an internal combustion engine set.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a comprehensive cooling system for waste heat power generation of an internal combustion engine set, which comprises the internal combustion engine set, an ORC power generation system, a heat source water pipeline, a cooling water pipeline and water cooling equipment, wherein the heat source water pipeline is connected with the ORC power generation system; the heat source water pipeline comprises a heat source water outlet pipeline and a heat source water return pipeline; the cooling water pipeline comprises a cooling water outlet pipeline and a cooling water return pipeline; the heat source water outlet of the internal combustion engine set is respectively connected with inlets of an ORC power generation system and water cooling equipment through a heat source water outlet pipeline, and outlets of the ORC power generation system and the water cooling equipment are respectively connected with a heat source water inlet of the internal combustion engine set through a heat source water return pipeline; ORC power generation system passes through the cooling water outlet conduit and is connected with the entry of water cooling equipment, the export of water cooling equipment passes through the cooling water return water pipeline and is connected with ORC power generation system.
Further, the ORC power generation system comprises an evaporator, a turbine, a condenser, a working medium pump, a heat source water circulating pump and a cooling water circulating pump; the evaporator is sequentially connected with the turbine and the condenser through a pipeline, and the condenser is connected with the evaporator through a working medium pump; the heat source water circulating pump is installed on the heat source water return pipeline, and the cooling water circulating pump is installed on the cooling water return pipeline.
Further, the water cooling equipment comprises a high-temperature area, a low-temperature area and a communicating pipeline, wherein the high-temperature area is communicated with the low-temperature area through the communicating pipeline, and a valve is arranged on the communicating pipeline.
Further, the low-temperature area of the water cooling equipment is connected with a water replenishing pipeline.
Further, the condenser passes through the inlet connection of cooling water outlet pipe and water cooling equipment's low-temperature region, the export of water cooling equipment's low-temperature region passes through the cooling water return water pipeline and is connected with the condenser.
Furthermore, the heat source water outlet pipeline comprises a heat source water outlet pipeline I and a heat source water outlet pipeline II, and an electric three-way valve is arranged at the joint of the heat source water outlet pipeline I, the heat source water outlet pipeline II and a pipeline connected with the inlet of the evaporator.
Furthermore, a heat source water outlet of the internal combustion engine set is connected with an inlet of the evaporator through a heat source water outlet pipeline I, and the heat source water outlet of the internal combustion engine set is connected with an inlet of a high-temperature area of the water cooling equipment through a heat source water outlet pipeline I and a heat source water outlet pipeline II in sequence; and the high-temperature area of the water cooling equipment and the outlet of the evaporator are respectively connected with a heat source water inlet of the internal combustion engine set through a heat source water return pipeline.
And furthermore, a first bypass pipeline is arranged between the second heat source water outlet pipeline and the cooling water outlet pipeline, and a mechanical three-way valve is arranged at the joint of the cooling water outlet pipeline, the first bypass pipeline and a pipeline connected with the inlet of the low-temperature region of the water cooling equipment.
And a bypass pipeline II is arranged between the heat source water return pipeline and the cooling water return pipeline, and a mechanical three-way valve II is arranged at the joint of the cooling water return pipeline, the bypass pipeline II and a pipeline connected with an outlet of a low-temperature region of the water cooling equipment.
Compared with the prior art, the utility model has the following advantages:
according to the comprehensive cooling system for the waste heat power generation of the internal combustion engine set, the available waste heat is the water heat of the cylinder sleeve or the heat of high-temperature flue gas, and the waste heat is converted into electric energy by combining the ORC power generation system, so that the waste heat of the internal combustion engine set is recycled, the internal combustion engine set is cooled more effectively, the output power of the internal combustion engine set is improved, and the comprehensive utilization rate of energy is improved. The ORC power generation system is combined with the water cooling equipment to replace the traditional heat dissipation mode of the internal combustion engine set, so that compared with the traditional heat dissipation mode, the self-power consumption of the system is reduced, and the purposes of energy conservation and consumption reduction are achieved; and the water cooling equipment is set into a high-temperature area and a low-temperature area, so that the high-efficiency cooling of the internal combustion engine unit can be realized uninterruptedly under special conditions such as excess waste heat of cylinder sleeve water, fault or maintenance period of the ORC power generation system and the like. In addition, compared with the mode of cooling by air, the water cooling mode is less influenced by external environmental factors, and the stable operation of the system can be ensured.
Drawings
FIG. 1 is a schematic diagram of the operation of a prior art ORC power generation system;
fig. 2 is an operation schematic diagram of the integrated cooling system for generating power by waste heat of the internal combustion engine set according to the embodiment of the utility model.
The reference numbers in the figures denote:
1. an internal combustion engine unit;
201. the system comprises an evaporator, 202, a turbine, 203, a condenser, 204, a working medium pump, 205, a heat source water circulating pump, 206 and a cooling water circulating pump;
301. a first heat source water outlet pipeline 302, a second heat source water outlet pipeline 303, a heat source water return pipeline;
401. a cooling water outlet pipeline 402, a cooling water return pipeline;
5. water cooling equipment, 501, a low-temperature area, 502, a high-temperature area, 503, a communication pipeline, 504, a water replenishing pipeline and 505, a valve;
6. and 7, an electric three-way valve, 7, a first bypass pipeline, 8, a first mechanical three-way valve, 9, a second bypass pipeline and 10, and a second mechanical three-way valve.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments.
As shown in fig. 2, the integrated cooling system for internal combustion engine set waste heat power generation of the present embodiment includes an internal combustion engine set 1, an ORC power generation system, a heat source water pipeline, a cooling water pipeline and a water cooling device 5; the heat source water pipeline comprises a heat source water outlet pipeline and a heat source water return pipeline 303; the cooling water pipeline comprises a cooling water outlet pipeline 401 and a cooling water return pipeline 402; a heat source water outlet of the internal combustion engine unit 1 is respectively connected with an inlet of an ORC power generation system and an inlet of the water cooling equipment 5 through a heat source water outlet pipeline, and an outlet of the ORC power generation system and an outlet of the water cooling equipment 5 are respectively connected with a heat source water inlet of the internal combustion engine unit 1 through a heat source water return pipeline 303; the ORC power generation system is connected with an inlet of the water cooling equipment 5 through a cooling water outlet pipeline 401, and an outlet of the water cooling equipment 5 is connected with the ORC power generation system through a cooling water return pipeline 402.
The ORC power generation system comprises an evaporator 201, a turbine 202, a condenser 203, a working medium pump 204, a heat source water circulating pump 205 and a cooling water circulating pump 206, wherein the evaporator 201 is sequentially connected with the turbine 202 and the condenser 203 through pipelines, and the condenser 203 is connected with the evaporator 201 through the working medium pump 204; the heat source water circulating pump 205 is installed on the heat source water return pipe 303, the cooling water circulating pump 206 is installed on the cooling water return pipe 402, wherein the turbine 202 is connected with the generator, and the turbine 202 outputs mechanical power to drive the generator to generate electricity.
The water cooling equipment 5 comprises a high-temperature area 502, a low-temperature area 501, a communicating pipeline 503 and a water replenishing pipeline 504, wherein the high-temperature area 502 is communicated with the low-temperature area 501 through the communicating pipeline 503, a valve 505 is arranged on the communicating pipeline 503, the valve 505 is opened, the high-temperature area 502 can be communicated with the low-temperature area 501, the low-temperature area 501 is used for cooling an ORC power generation system, and the high-temperature area 502 is used for cooling redundant heat of cylinder liner water. The low temperature region 501 of the water cooling equipment 5 is connected with a water replenishing pipe 504. The condenser 203 is connected with the inlet of the low-temperature area 501 of the water cooling device 5 through a cooling water outlet pipeline 401, and the outlet of the low-temperature area 501 of the water cooling device 5 is connected with the condenser 203 through a cooling water return pipeline 402.
The heat source water outlet pipeline comprises a first heat source water outlet pipeline 301 and a second heat source water outlet pipeline 302, and an electric three-way valve 6 is arranged at the joint of the first heat source water outlet pipeline 301, the second heat source water outlet pipeline 302 and a pipeline connected with an inlet of the evaporator 201. The heat source water outlet of the internal combustion engine set 1 is connected with the inlet of the evaporator 201 through a first heat source water outlet pipeline 301, the heat source water outlet of the internal combustion engine set 1 is connected with the inlet of the high-temperature area 502 of the water cooling device 5 through a first heat source water outlet pipeline 301 and a second heat source water outlet pipeline 302 in sequence, the outlet of the high-temperature area 502 of the water cooling device 5 and the outlet of the evaporator 201 are connected with the heat source water inlet of the internal combustion engine set 1 through a heat source water return pipeline 303 respectively, and the heat source water of the internal combustion engine set 1 is usually obtained from the heat of cylinder sleeve water or the heat of high-temperature flue gas (the cylinder sleeve water source water is taken as an example in this example).
A first bypass pipeline 7 is arranged between the second heat source water outlet pipeline 302 and the cooling water outlet pipeline 401, and a mechanical three-way valve 8 is arranged at the joint of the cooling water outlet pipeline 401, the first bypass pipeline 7 and a pipeline connected with the inlet of the low-temperature area 501 of the water cooling equipment 5. And a second bypass pipeline 9 is arranged between the heat source water return pipeline 303 and the cooling water return pipeline 402, and a second mechanical three-way valve 10 is arranged at the joint of the cooling water return pipeline 402, the second bypass pipeline 9 and a pipeline connected with an outlet of the low-temperature region 501 of the water cooling equipment 5.
The working principle is as follows:
1. combustion power generation of an internal combustion engine set: the gas and a certain proportion of air are pressed into a plurality of cylinders, the heat generated after combustion pushes a spark plug with a crank link mechanism to rotate in a reciprocating way, the crank link mechanisms transmit mechanical kinetic energy to an engine, so that the engine transmits the kinetic energy to a coaxial generator rotor according to a set rotating speed, the rotor rotates to cut magnetic lines generated between stators, stable electric energy is output, and simultaneously, waste heat is generated and can be used as the heat of cylinder sleeve water and high-temperature flue gas.
2. An ORC power generation system: the temperature of a cylinder sleeve water outlet of the internal combustion engine unit 1 is generally about 80-110 ℃, the cylinder sleeve water enters the evaporator 201 through the first heat source water outlet pipeline 301, the organic working medium is heated by the high-temperature cylinder sleeve water in the evaporator 201 and then turns from a liquid state to a gas state to complete pressure rise, the pressure rises and then enters the turbine 202 to do work to drive the generator to generate electricity, the pressure and the temperature of the organic working medium gas after doing work can be reduced, then the organic working medium gas enters the condenser 203 to form working medium liquid through cooling water and pressure reduction, and the liquid is sent to the evaporator 201 through the working medium pump 204 to be circularly generated and utilized. The cylinder liner water entering the evaporator 201 is cooled and then sent back to the cylinder liner water loop of the internal combustion engine unit 1 by the heat source water circulating pump 205 for recycling.
3. The integrated cooling system comprises: the low-temperature zone 501 of the water cooling device 5 is used for cooling an ORC power generation system, and the high-temperature zone 502 is used for cooling redundant heat of cylinder sleeve water, so that a radiator of the internal combustion engine set 1 is not additionally started, and the self-power consumption is reduced. According to the cylinder liner water heat quantity required by the ORC power generation system, the electric three-way valve 6 is automatically adjusted, the cylinder liner water quantity entering the evaporator 201 and the high-temperature area 502 of the water cooling device 5 is controlled, the design capacity of the common ORC power generation system can completely consume the residual heat of the cylinder liner water, and the high-temperature area 502 of the water cooling device 5 can be used only in a special period.
During the normal operation of the ORC power generation system, the mechanical three-way valve I8 and the mechanical three-way valve II 10 are adjusted to keep the cooling water outlet pipeline 401 and the low-temperature area 501 of the water cooling equipment 5 and the cooling water return pipeline 402 and the low-temperature area 501 of the water cooling equipment 5 communicated, the bypass pipeline I7 and the bypass pipeline II 9 are in a closed state, cooling water enters the condenser 203 to take away heat of organic working media, then enters the low-temperature area 501 of the water cooling equipment 5 through the cooling water outlet pipeline 401 to be cooled, and finally is sent to the condenser 203 through the cooling water return pipeline 402 to be recycled through the cooling water circulating pump 206.
During the fault or maintenance period of the ORC power generation system, the first mechanical three-way valve 8 and the second mechanical three-way valve 10 are adjusted to keep the cooling water outlet pipeline 401, the low-temperature area 501 of the water cooling equipment 5, the cooling water return pipeline 402 and the low-temperature area 501 of the water cooling equipment 5 closed, the first bypass pipeline 7, the low-temperature area 501 of the water cooling equipment 5 and the second bypass pipeline 9 are communicated with the low-temperature area 501 of the water cooling equipment 5, a valve 505 on a communication pipeline 50 between the high-temperature area 502 and the low-temperature area 501 of the water cooling equipment 5 is opened, the internal combustion engine set 1 is directly cooled by the water cooling equipment 5, and the self-power consumption of the internal combustion engine set 1 is reduced.
The internal combustion engine unit 1 and the ORC power generation system are cooled in a water cooling mode, the influence of external environmental factors is small, and the stable operation of the system is ensured; by optimizing the traditional ORC power generation mode, the self-consumption of the system is effectively reduced, the power generation efficiency is improved, and the comprehensive utilization rate of energy is improved.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. The comprehensive cooling system for the waste heat power generation of the internal combustion engine unit is characterized by comprising the internal combustion engine unit, an ORC power generation system, a heat source water pipeline, a cooling water pipeline and water cooling equipment; the heat source water pipeline comprises a heat source water outlet pipeline and a heat source water return pipeline; the cooling water pipeline comprises a cooling water outlet pipeline and a cooling water return pipeline; the heat source water outlet of the internal combustion engine set is respectively connected with inlets of an ORC power generation system and water cooling equipment through a heat source water outlet pipeline, and outlets of the ORC power generation system and the water cooling equipment are respectively connected with a heat source water inlet of the internal combustion engine set through a heat source water return pipeline; ORC power generation system passes through the cooling water outlet conduit and is connected with the entry of water cooling equipment, the export of water cooling equipment passes through the cooling water return water pipeline and is connected with ORC power generation system.
2. The integrated cooling system for cogeneration of an internal combustion engine set of claim 1, wherein said ORC power generation system comprises an evaporator, a turbine, a condenser, a working fluid pump, a heat source water circulation pump, and a cooling water circulation pump; the evaporator is sequentially connected with the turbine and the condenser through a pipeline, and the condenser is connected with the evaporator through a working medium pump; the heat source water circulating pump is installed on the heat source water return pipeline, and the cooling water circulating pump is installed on the cooling water return pipeline.
3. The integrated cooling system for the cogeneration of an internal combustion engine unit according to claim 2, wherein the water cooling device comprises a high temperature region, a low temperature region and a communicating pipe, the high temperature region is communicated with the low temperature region through the communicating pipe, and a valve is disposed on the communicating pipe.
4. The integrated cooling system for the cogeneration of an internal combustion engine set according to claim 3, wherein a water replenishing pipeline is connected to the low temperature region of the water cooling equipment.
5. The integrated cooling system for the cogeneration of an internal combustion engine set according to claim 3, wherein the condenser is connected with an inlet of the low temperature zone of the water cooling equipment through a cooling water outlet pipe, and an outlet of the low temperature zone of the water cooling equipment is connected with the condenser through a cooling water return pipe.
6. The integrated cooling system for generating power by waste heat of an internal combustion engine set according to claim 3, wherein the heat source water outlet pipeline comprises a first heat source water outlet pipeline and a second heat source water outlet pipeline, and an electric three-way valve is arranged at the joint of the first heat source water outlet pipeline, the second heat source water outlet pipeline and a pipeline connected with an inlet of the evaporator.
7. The integrated cooling system for generating power by waste heat of the internal combustion engine set according to claim 6, wherein a heat source water outlet of the internal combustion engine set is connected with an inlet of the evaporator through a heat source water outlet pipeline I, and the heat source water outlet of the internal combustion engine set is connected with an inlet of a high-temperature area of the water cooling equipment through the heat source water outlet pipeline I and the heat source water outlet pipeline II in sequence; and the high-temperature area of the water cooling equipment and the outlet of the evaporator are respectively connected with a heat source water inlet of the internal combustion engine set through a heat source water return pipeline.
8. The comprehensive cooling system for generating power by waste heat of an internal combustion engine set according to claim 6, wherein a first bypass pipeline is arranged between the second heat source water outlet pipeline and the cooling water outlet pipeline, and a first mechanical three-way valve is arranged at the joint of the cooling water outlet pipeline, the first bypass pipeline and a pipeline connected with an inlet of a low-temperature region of the water cooling equipment.
9. The integrated cooling system for generating power by waste heat of the internal combustion engine set according to claim 6, wherein a second bypass pipeline is arranged between the heat source water return pipeline and the cooling water return pipeline, and a second mechanical three-way valve is arranged at a connection position of the cooling water return pipeline, the second bypass pipeline and a pipeline connected with an outlet of the low-temperature region of the water cooling equipment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121991571.8U CN215333024U (en) | 2021-08-24 | 2021-08-24 | Comprehensive cooling system for waste heat power generation of internal combustion engine set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121991571.8U CN215333024U (en) | 2021-08-24 | 2021-08-24 | Comprehensive cooling system for waste heat power generation of internal combustion engine set |
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| CN215333024U true CN215333024U (en) | 2021-12-28 |
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| CN202121991571.8U Active CN215333024U (en) | 2021-08-24 | 2021-08-24 | Comprehensive cooling system for waste heat power generation of internal combustion engine set |
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