CN218760273U - Energy comprehensive utilization system for photovoltaic photo-thermal coupling differential pressure power generation - Google Patents
Energy comprehensive utilization system for photovoltaic photo-thermal coupling differential pressure power generation Download PDFInfo
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- CN218760273U CN218760273U CN202222992252.XU CN202222992252U CN218760273U CN 218760273 U CN218760273 U CN 218760273U CN 202222992252 U CN202222992252 U CN 202222992252U CN 218760273 U CN218760273 U CN 218760273U
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Abstract
The utility model belongs to energy-conserving transformation, distributed generation field disclose an energy comprehensive utilization system of photovoltaic light and heat coupling pressure differential electricity generation. The method comprises the following steps: the photovoltaic photo-thermal component is provided with a hot working medium outlet and a cold working medium inlet; the differential pressure power generation turbine is provided with a high-pressure gas inlet and a low-pressure gas outlet; the heat storage water tank comprises a working medium pipeline, and the working medium pipeline is communicated with a hot working medium outlet and a cold working medium inlet of the photovoltaic photo-thermal component; the heat storage water tank is provided with a high-temperature water outlet and a low-temperature water inlet; a low-pressure gas outlet of the differential pressure power generation turbine is connected with a heat exchange section, a water circulation pipeline is arranged in the heat exchange section, and the water circulation pipeline is communicated with a high-temperature water outlet and a low-temperature water inlet of the heat storage water tank to form a second heat exchange cycle; the differential pressure power generation turbine is connected with the power distribution room; the photovoltaic photo-thermal assembly is connected with the power distribution room through the inverter. The utility model discloses a system has realized the high-efficient comprehensive utilization of solar energy and pressure differential energy.
Description
Technical Field
The utility model relates to an energy-conserving transformation, distributed generation field, in particular to energy comprehensive utilization system of photovoltaic light and heat coupling pressure differential electricity generation.
Background
The description of the background art of the present invention pertains to the related art related to the present invention, and is only for the purpose of illustrating and facilitating the understanding of the contents of the present invention, and it is not to be understood that the applicant definitely considers or presumes that the applicant considers the present invention as the prior art of the application date of the present invention which is filed for the first time.
In order to realize the double-carbon target, a distributed plant represented by a natural gas pressure regulating station has wide energy-saving space, and pressure energy generated in the pressure reduction process and solar energy on the roof of the plant are available valuable resources. At present, the cold energy generated by the differential pressure power generation is difficult to find out a proper consumption scene, so that a natural gas boiler is adopted for heating, precious gas resources are wasted, carbon emission is generated, and the loss of 0.15% of gas transmission can be caused on the whole. If cold volume is offset without heat compensation, the internal valve of the gas pipeline is blocked by ice seal, the pipeline is cooled and extracted, and meanwhile, the underground soil is frozen to damage the roadbed of the road along the way. In addition, the roof resources of the distributed plant are not fully utilized, and the residual heat of the photovoltaic panel cannot be fully utilized only by installing the photovoltaic device.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an energy comprehensive utilization system of photovoltaic light and heat coupling pressure differential electricity generation, the utility model discloses a system has realized the high-efficient comprehensive utilization of solar energy and pressure differential energy.
The utility model aims at realizing through the following technical scheme:
a photovoltaic photo-thermal coupling differential pressure power generation's energy comprehensive utilization system includes:
the photovoltaic photo-thermal component generates electricity by utilizing solar energy and is provided with a hot working medium outlet and a cold working medium inlet;
the differential pressure power generation turbine is provided with a high-pressure gas inlet and a low-pressure gas outlet;
the heat storage water tank comprises a working medium pipeline, and the working medium pipeline is communicated with a hot working medium outlet and a cold working medium inlet of the photovoltaic photo-thermal component to form a first heat exchange cycle; the part of the first heat exchange cycle in the hot water storage tank exchanges heat with water in the hot water storage tank to store energy in the hot water storage tank; the heat storage water tank is provided with a high-temperature water outlet and a low-temperature water inlet;
a low-pressure gas outlet of the differential pressure power generation turbine is connected with a heat exchange section, a water circulation pipeline is arranged in the heat exchange section, and the water circulation pipeline is communicated with a high-temperature water outlet and a low-temperature water inlet of the heat storage water tank to form a second heat exchange cycle; the differential pressure power generation turbine is connected with the power distribution room; the photovoltaic photo-thermal assembly is connected with the power distribution room through the inverter.
In the system, the coupling of photovoltaic photo-thermal and differential pressure power generation is realized, the waste heat generated by solar power generation and the cold energy generated by differential pressure power generation are neutralized, the photovoltaic power generation efficiency is improved, the stable operation of a differential pressure power generation system is ensured, and the high-efficiency comprehensive utilization of solar energy and differential pressure energy is realized on the whole.
The utility model discloses the system has utilized the waste heat behind the solar energy power generation to provide the low-grade heat that needs for pressure differential power generation for photovoltaic light and heat and pressure differential power generation have realized beneficial complementation.
Drawings
Fig. 1 is the utility model discloses in a photovoltaic light and heat coupling pressure differential power generation's energy comprehensive utilization system's schematic structure diagram.
Detailed Description
The present application is further described below with reference to examples.
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, in the following description, different "one embodiment" or "an embodiment" means not necessarily the same embodiment. Various embodiments may be replaced or combined, and other embodiments may be obtained according to the embodiments without creative efforts for those skilled in the art.
With reference to fig. 1, a photovoltaic photo-thermal coupling differential pressure power generation energy comprehensive utilization system includes:
the photovoltaic photo-thermal component 1 generates electricity by utilizing solar energy, and a hot working medium outlet and a cold working medium inlet (respectively connected with a hot working medium pipeline 11 and a cold working medium pipeline 12) are arranged on the photovoltaic photo-thermal component 1;
it can be understood that the specific type, the power generation capacity and the working medium type of the photovoltaic photo-thermal assembly are not limited, and a person skilled in the art can select a suitable photovoltaic photo-thermal assembly working medium according to the needs.
The differential pressure power generation turbine 3 is provided with a high-pressure gas inlet and a low-pressure gas outlet;
it should be noted that the specific power generation capacity of the differential pressure power generation turbine is not limited, and the differential pressure power generation turbine can be matched with the photovoltaic photo-thermal component.
The heat storage water tank 2 comprises a working medium pipeline (not shown in the figure), and the working medium pipeline is communicated with a hot working medium outlet and a cold working medium inlet of the photovoltaic photo-thermal component to form a first heat exchange cycle; the part of the first heat exchange cycle in the heat storage water tank 2 exchanges heat with the water in the heat storage water tank 2 to store energy in the heat storage water tank 2; the heat storage water tank 2 is provided with a high-temperature water outlet and a low-temperature water inlet (which are respectively connected with a high-temperature water pipeline 21 and a low-temperature water pipeline 22);
it can be understood that the size, the material, working medium pipeline etc. of heat storage water tank do not do the restriction, as long as can realize that the heat transfer of the water in working medium and the water tank will photovoltaic light and heat subassembly electricity generation waste heat be used for the heat transfer section of pressure differential power generation turbine can, abundant waste heat can be stored in aqueous.
A low-pressure gas outlet of the differential pressure power generation turbine 3 is connected with a heat exchange section 6, a water circulation pipeline (not shown in the figure) is arranged in the heat exchange section 6, and the water circulation pipeline is communicated with a high-temperature water outlet and a low-temperature water inlet of the heat storage water tank to form a second heat exchange cycle; the differential pressure power generation turbine 3 is connected with a power distribution room (connected through a generator 4); in some embodiments of the present invention, the photovoltaic photo-thermal module 1 is connected to the power distribution room through the inverter 5. Therefore, the photovoltaic photo-thermal component power generation and the differential pressure power generation turbine can jointly provide electric energy for the plant.
After the photovoltaic photo-thermal component 1 generates electricity and waste heat to heat water in the heat storage water tank 2, hot water in the heat storage water tank 2 exchanges heat with low-pressure gas generated in power generation of a differential pressure power generation turbine 3 through a heat exchange section 6, and the method is used for guaranteeing continuous work of the differential pressure power generation turbine 3.
In some embodiments of the present invention, the photovoltaic and photothermal module 1 is electrically connected to the power distribution room to supply power to the station.
In some embodiments of the present invention, the turbine 3 is connected to a distribution room to supply power to a plant.
The utility model discloses an energy comprehensive utilization system of photovoltaic light and heat coupling pressure differential electricity generation, including heat transfer system, power generation system. In the heat exchange system, the photovoltaic photo-thermal component recovers the waste heat of the photovoltaic panel and stores the waste heat in the water tank, and then the waste heat is heated, expanded and cooled in the heat exchange section through water circulation, so that the continuous and stable work of the differential pressure power generation turbine is ensured; in the power generation system, the photovoltaic photo-thermal component generates power by using solar energy, and meanwhile, the differential pressure generator set generates power by using pressure energy converted from high-pressure gas to low-pressure gas, and the photovoltaic photo-thermal component and the low-pressure gas provide distributed power supply capacity for a plant station together.
In the system, the coupling of photovoltaic photo-thermal and differential pressure power generation is realized, the waste heat generated by solar power generation and the cold energy generated by differential pressure power generation are neutralized, the photovoltaic power generation efficiency is improved, the stable operation of a differential pressure power generation system is ensured, and the high-efficiency comprehensive utilization of solar energy and differential pressure energy is realized on the whole.
The heat supplementing requirement of the differential pressure power generation has low requirement on the grade of waste heat, is insensitive to temperature fluctuation, forms a good matching relation with the waste heat generated by photovoltaic photo-heat and fluctuating seasonally, can replace the original fossil fuel heat supplementing mode, reduces carbon emission, and simultaneously improves the photovoltaic power generation efficiency and the stability of the differential pressure generator set. Meanwhile, the heat supplementing problem of the differential pressure power generation is solved in a better heat supplementing mode, and the application limit of the differential pressure power generation is reduced.
Example (c): the distributed energy comprehensive utilization project of a certain natural gas station adopts 20 photovoltaic photo-thermal components, the power generation power is 7kWp, the total power of heat supply is 14kW, and the annual temperature fluctuation range is 50-20 ℃; the differential pressure generator set is arranged at 40000Nm 3 The power generation power of a day gas pipeline is 10kW, the cold production power is 10kW, and the annual temperature fluctuation range is-10 to-30 ℃. The ratio of the heat supply power of the photovoltaic photo-thermal and the cold power of the pressure difference power generation in the system is 1.4, abundant heat generated by the photovoltaic photo-thermal in the daytime is stored in the heat storage water tank, the requirement of the pressure difference power generation unit for heat compensation at night is met, meanwhile, the annual temperature of the photovoltaic is good in matching relation with seasonal fluctuation, and the annual normal operation of the pressure difference power generation unit is guaranteed. The solar energy waste heat of the whole coupling system and the cold energy of the differential pressure generating set realize neutralization, and 60-80 Nm of gas consumed by heat compensation is saved every day 3 The total utilization rate of solar energy reaches 60%, and 22kW is supplied to the outside.
It should be noted that the above embodiments can be freely combined as necessary. The above description is only for the preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides a photovoltaic light and heat coupling pressure differential power generation's energy comprehensive utilization system which characterized in that includes:
the photovoltaic photo-thermal component generates electricity by utilizing solar energy and is provided with a hot working medium outlet and a cold working medium inlet;
the differential pressure power generation turbine is provided with a high-pressure gas inlet and a low-pressure gas outlet;
the heat storage water tank comprises a working medium pipeline, and the working medium pipeline is communicated with a hot working medium outlet and a cold working medium inlet of the photovoltaic photo-thermal component to form a first heat exchange cycle; the part of the first heat exchange cycle in the hot water storage tank exchanges heat with water in the hot water storage tank to store energy in the hot water storage tank; the heat storage water tank is provided with a high-temperature water outlet and a low-temperature water inlet;
a low-pressure gas outlet of the differential pressure power generation turbine is connected with a heat exchange section, a water circulation pipeline is arranged in the heat exchange section, and the water circulation pipeline is communicated with a high-temperature water outlet and a low-temperature water inlet of the heat storage water tank to form a second heat exchange cycle;
the differential pressure power generation turbine is connected with a power distribution room; the photovoltaic photo-thermal assembly is connected with the power distribution room through the inverter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222992252.XU CN218760273U (en) | 2022-11-10 | 2022-11-10 | Energy comprehensive utilization system for photovoltaic photo-thermal coupling differential pressure power generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222992252.XU CN218760273U (en) | 2022-11-10 | 2022-11-10 | Energy comprehensive utilization system for photovoltaic photo-thermal coupling differential pressure power generation |
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