CN211058875U - Hot fluid combined cooling system with power generation function - Google Patents
Hot fluid combined cooling system with power generation function Download PDFInfo
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- CN211058875U CN211058875U CN201922376874.8U CN201922376874U CN211058875U CN 211058875 U CN211058875 U CN 211058875U CN 201922376874 U CN201922376874 U CN 201922376874U CN 211058875 U CN211058875 U CN 211058875U
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Abstract
The utility model discloses a hot fluid combined cooling system with power generation function, which comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with an expander of a generator, a first control valve is arranged between the first heat exchanger and the expander, the expander is connected with the second heat exchanger, and the second heat exchanger is connected with the first heat exchanger through a pump; and temperature sensors are arranged on the outlets and inlets of the first heat exchanger and the second heat exchanger, and the temperature sensors, the first control valve, the generator and the pump are electrically connected with the controller. The scheme utilizes the first heat exchanger to carry out heat exchange on the industrial discharged hot fluid and the organic working medium, the organic working medium is changed into high-temperature and high-pressure organic steam, and the organic steam enters the expansion machine through the first control valve, so that power generation is realized, and a good energy-saving and environment-friendly effect is achieved.
Description
Technical Field
The utility model relates to a thermal power generation technical field, concretely relates to hot-fluid combination formula cooling system with electricity generation function.
Background
In the chemical industry, a large amount of low-temperature hot fluid with the temperature range of 60-300 ℃ exists and needs to be cooled to a specific target temperature so as to meet the requirements of the production process. At present, the hot fluid is cooled by adopting conventional cooling modes such as air cooling, water cooling, evaporative cooling and the like, but the conventional cooling mode needs power consumption or water consumption in the process of cooling the hot fluid, and belongs to an energy-consumption and water-consumption type cooling mode, for example, a fan in the air cooling process needs to consume electric energy; a large amount of circulating water is consumed in the water cooling process, and meanwhile, the water pump also needs to consume electric energy; the evaporative cooling process requires continuous fresh water replenishment, and fans and pumps in the evaporative cooling equipment also require electrical power consumption. The above shows that the conventional cooling mode of energy consumption and water consumption increases the operation cost of the chemical industry, and meanwhile, the power consumption and water consumption in the conventional cooling process can also indirectly cause environmental pollution.
The organic Rankine cycle power generation system can recover and convert part of heat energy in the hot fluid into electric energy by utilizing a thermal power conversion principle, so that the system can obtain power generation benefits while realizing the cooling of the hot fluid, and has good energy-saving and environment-friendly effects. However, the organic rankine cycle system contains power components such as an expansion machine, a working medium pump, an oil pump and the like, and the power components are all vulnerable components, so that once a certain power component is damaged in the operation process, the whole organic rankine cycle system cannot operate, and further, the hot fluid cannot be cooled to the target temperature required by the process, and the whole chemical process is affected. Moreover, the power generation efficiency, which is a key index of the organic rankine cycle system, decreases with a decrease in the temperature of the cooling target, and even when the cooling target is too low, the power generation efficiency of the system becomes negative. The above problems of the organic rankine cycle system limit the application of the system in the chemical industry.
In summary, aiming at the defects of the existing cooling mode of the industrial low-temperature thermal fluid, an efficient and stable cooling system is urgently needed to be designed so as to solve the defects of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-conserving, high-efficient and stable hot-fluid combination formula cooling system who has power generation function to prior art's the aforesaid not enough.
In order to achieve the above object, the utility model adopts the following technical scheme:
the thermal fluid combined cooling system with the power generation function comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with an expander of a generator, a first control valve is arranged between the first heat exchanger and the expander, the expander is connected with the second heat exchanger, and the second heat exchanger is connected with the first heat exchanger through a pump; and temperature sensors are arranged on the outlets and inlets of the first heat exchanger and the second heat exchanger, and the temperature sensors, the first control valve, the generator and the pump are electrically connected with the controller.
Further, a third heat exchanger is arranged between the first heat exchanger and the second heat exchanger, a second control valve is arranged between the third heat exchanger and the first heat exchanger, and the second control valve is electrically connected with the controller.
Further, a standby pump is arranged between the second heat exchanger and the first heat exchanger and electrically connected with the controller.
Further, the first heat exchanger is connected with a fourth heat exchanger.
The utility model has the advantages that: according to the scheme, heat exchange is carried out on hot fluid discharged by industry and an organic working medium by using a first heat exchanger, the organic working medium is changed into high-temperature and high-pressure organic steam, the organic steam enters an expander through a first control valve, the expander is pushed to do work outwards to be changed into low-temperature and low-pressure organic exhaust steam, and meanwhile, the output work of the expander is converted into electric energy by a generator; and the low-temperature and low-pressure organic dead steam is condensed into organic condensate in the second heat exchanger, and the organic condensate is conveyed to the first heat exchanger by the pump to absorb a hot fluid heat source discharged by the industry, so that the circulation of the heat source is realized, and the cooling of the hot fluid is completed.
The first sensor and the second sensor judge the heat exchange efficiency of the first heat exchanger and the second heat exchanger by detecting the temperature change of the organic working medium on the outlet and the inlet of the first heat exchanger and the second heat exchanger, and the pump ensures the heat exchange efficiency by controlling the flow speed. When the expander or the generator breaks down, the first control valve is closed, the second control valve is opened, the high-temperature and high-pressure organic working medium is condensed into organic condensate by the second heat exchanger and the third heat exchanger, and the organic condensate is conveyed to the first heat exchanger by the pump to continuously absorb heat of the hot fluid.
When the pump fails, the standby pump is opened to replace the pump to work; the hot fluid releases heat in the first heat exchanger, is cooled to an intermediate temperature Tm, is cooled to a target temperature Tout through the fourth heat exchanger and is output, and cooling of the hot fluid is achieved.
Drawings
Fig. 1 is a schematic block diagram of a thermal fluid combined cooling system with power generation.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
As shown in fig. 1, the thermal fluid combined cooling system with power generation function includes a first heat exchanger and a second heat exchanger, the first heat exchanger is connected with an expander of a generator, a first control valve is arranged between the first heat exchanger and the expander, the expander is connected with the second heat exchanger, and the second heat exchanger is connected with the first heat exchanger through a pump; and temperature sensors are arranged on the outlets and inlets of the hot fluid on the first heat exchanger and the second heat exchanger, and the temperature sensors, the first control valve, the generator and the pump are electrically connected with the controller. The first heat exchanger is an evaporator, heat exchange of organic working media is achieved by utilizing industrial discharged hot fluid, the second heat exchanger adopts a condenser to condense the organic working media, the controller adopts a C51 singlechip, and the temperature sensor adopts a WZP-187-3PBO type temperature sensor.
According to the scheme, heat exchange is carried out on hot fluid discharged by industry and an organic working medium by using a first heat exchanger, the organic working medium is changed into high-temperature and high-pressure organic steam, the organic steam enters an expander through a first control valve, the expander is pushed to do work outwards to be changed into low-temperature and low-pressure organic exhaust steam, and meanwhile, the output work of the expander is converted into electric energy by a generator; and the low-temperature and low-pressure organic dead steam is condensed into organic condensate in the second heat exchanger, and the organic condensate is conveyed to the first heat exchanger by the pump to absorb a hot fluid heat source discharged by the industry, so that the circulation of the heat source is realized, and the cooling of the hot fluid is completed.
The first sensor and the second sensor judge the heat exchange efficiency of the first heat exchanger and the second heat exchanger by detecting the temperature change of the organic working medium on the outlet and the inlet of the first heat exchanger and the second heat exchanger, and the pump ensures the heat exchange efficiency by controlling the flow speed.
A third heat exchanger is further arranged between the first heat exchanger and the second heat exchanger, a second control valve is arranged between the third heat exchanger and the first heat exchanger, and the second control valve is electrically connected with the controller. When the expander or the generator breaks down, the first control valve is closed, the second control valve is opened, the high-temperature and high-pressure organic working medium is condensed into organic condensate by the second heat exchanger and the third heat exchanger, and the organic condensate is conveyed to the first heat exchanger by the pump to continuously absorb heat of the hot fluid.
A standby pump is arranged between the second heat exchanger and the first heat exchanger, the standby pump is electrically connected with the controller, and the first heat exchanger is connected with a fourth heat exchanger. When the pump fails, the standby pump is opened to replace the pump to work; the hot fluid releases heat in the first heat exchanger, is cooled to an intermediate temperature Tm, is cooled to a target temperature Tout through the fourth heat exchanger and is output, and cooling of the hot fluid is achieved. The utility model discloses can continue to cool off the industry hot-fluid under the condition that power equipment such as expander, generator, pump damaged, can ensure the normal operating of industrial production technology.
Claims (4)
1. A hot fluid combined cooling system with a power generation function is characterized by comprising a first heat exchanger and a second heat exchanger, wherein the first heat exchanger is connected with an expander of a generator, a first control valve is arranged between the first heat exchanger and the expander, the expander is connected with the second heat exchanger, and the second heat exchanger is connected with the first heat exchanger through a pump; and temperature sensors are arranged on hot fluid outlets and inlets of the first heat exchanger and the second heat exchanger, and the temperature sensors, the first control valve, the generator and the pump are electrically connected with the controller.
2. The combined hot fluid cooling system with power generation function as claimed in claim 1, wherein a third heat exchanger is further arranged between the first heat exchanger and the second heat exchanger, a second control valve is arranged between the third heat exchanger and the first heat exchanger, and the second control valve is electrically connected with the controller.
3. The combined hot fluid cooling system with power generation function as claimed in claim 1, wherein a backup pump is arranged between the second heat exchanger and the first heat exchanger, and the backup pump is electrically connected with the controller.
4. The combined hot fluid cooling system with power generation function as claimed in claim 1, wherein a fourth heat exchanger is connected to the first heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922376874.8U CN211058875U (en) | 2019-12-26 | 2019-12-26 | Hot fluid combined cooling system with power generation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922376874.8U CN211058875U (en) | 2019-12-26 | 2019-12-26 | Hot fluid combined cooling system with power generation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211058875U true CN211058875U (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922376874.8U Active CN211058875U (en) | 2019-12-26 | 2019-12-26 | Hot fluid combined cooling system with power generation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211058875U (en) |
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2019
- 2019-12-26 CN CN201922376874.8U patent/CN211058875U/en active Active
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