CN215890117U - Zero-carbon cold power generator - Google Patents
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- CN215890117U CN215890117U CN202122278125.9U CN202122278125U CN215890117U CN 215890117 U CN215890117 U CN 215890117U CN 202122278125 U CN202122278125 U CN 202122278125U CN 215890117 U CN215890117 U CN 215890117U
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Abstract
The utility model provides a zero-carbon cold power generator, which comprises an energy acquisition system, a condensation-evaporator, a temperature changing device and a Rankine cycle steam turbine generator system, wherein the energy acquisition system acquires environmental heat energy and supplies the environmental heat energy to a liquid working medium of the condensation-evaporator, and the liquid working medium is converted into low-temperature steam after absorbing the heat energy; the temperature changing device converts low-temperature steam into high-temperature heat energy, transmits the high-temperature heat energy to the Rankine cycle steam turbine generator system, and simultaneously converts a vaporous working medium into a liquid working medium to return to the condenser-evaporator; the Rankine cycle steam turbine generator system converts high-temperature heat energy generated by the temperature changing device into electric energy, meanwhile, generated exhaust gas is sent to the condensing-evaporating device for energy transfer to form low-temperature liquid, the low-temperature liquid is pressurized and then exchanges heat with high-temperature steam of the temperature changing device to form high-temperature high-pressure steam, and the Rankine cycle steam turbine generator system is driven to perform continuous cycle of heat energy and electric energy conversion. The utility model can realize the five-joint production of cold water, hot water, electricity, heating and industrial steam.
Description
Technical Field
The utility model relates to the technical field of energy, in particular to a zero-carbon cold power generator.
Background
At present, all generators use fossil fuel to generate high temperature as a high-temperature heat source, and use ambient temperature as a low-temperature cold source to condense low-temperature exhaust gas into liquid so as to ensure the recycling of working media, and simultaneously discharge most of exhaust gas energy which cannot be utilized under the current technical conditions into the environment so as to obtain power.
In a rankine cycle generator, which is based on the rankine cycle, it is composed of four main devices, a liquid pressurizing pump, a boiler, a steam turbine, and a condenser. When the pump works, the liquid working medium is compressed and boosted in the pump; then the steam enters a boiler to be heated and vaporized until the steam becomes superheated steam, the steam enters a steam turbine to be expanded and do work, and the low-pressure steam after the work enters a condenser to be cooled and condensed into water. And then returning to the liquid pressurizing pump to complete a cycle.
The 1900 Planck proposes that the essence of energy is energy quantum, called quantum for short, any object with thermodynamic temperature of more than absolute 0k has thermodynamic energy, and the essence is energy generated by quantum motion;
E＝TC＝NHV
wherein E is energy, T is thermodynamic temperature, C is specific heat of a substance, the number of N-quanta, H is Planck constant, and V is frequency of quanta.
From the theory, the environment temperature of people is about 273K, the earth has abundant substances, particularly water and air and an environment heat source which are available at any time, the people live in the energy ocean and do not have any energy problem, but the reality is that the environment energy is called low-grade energy and useless energy, the energy far higher than the environment temperature is called high-grade energy and is only useful energy, the high-grade energy is generated to generate steam to push a turbine to do work, the Rankine cycle is realized, at present, the environment energy is mainly completed by burning fossil fuel, and due to carbon emission and air pollution generated by burning the fossil fuel, the people fall into a huge crisis of climate change, and the world is the most urgent problem.
If thermodynamic energy in air or water is used as a high-temperature heat source, and low-temperature energy in exhaust gas exhausted by a steam turbine is reused, continuous circulation can be realized, the aim of utilizing environmental energy is achieved, and the fundamental problem of human development is thoroughly solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a zero-carbon cold power generator, which comprises an energy acquisition system, a condensation-evaporator, a temperature changing device and a Rankine cycle steam turbine generator system, wherein the energy acquisition system is used for acquiring heat energy in the environment and supplying liquid working media in the condensation-evaporator, the liquid working media are converted into low-temperature steam after absorbing the heat energy, the temperature changing device is used for converting the low-temperature steam generated by the condensation-evaporator into high-temperature heat energy and transmitting the high-temperature heat energy to the Rankine cycle steam turbine generator system, and simultaneously converting the vapor working media into the liquid working media to return to the condensation-evaporator; the Rankine cycle steam turbine generator system is used for converting high-temperature heat energy generated by the temperature changing device into electric energy, meanwhile, generated exhaust gas is conveyed to the condenser-evaporator to be subjected to energy transfer to form low-temperature liquid, the low-temperature liquid is pressurized and then subjected to heat exchange with high-temperature steam of the temperature changing device to form high-temperature high-pressure steam, and the high-temperature high-pressure steam drives the Rankine cycle steam turbine generator system to perform continuous cycle of heat energy and electric energy conversion.
Optionally, the rankine cycle turbogenerator system comprises a liquid pressurizing pump, a steam turbine and a generator, wherein a low-pressure end of the liquid pressurizing pump is communicated with the condensing-evaporating device, a high-pressure end of the liquid pressurizing pump is communicated with a low-temperature inlet end of the temperature changing device, a low-temperature outlet end of the temperature changing device is communicated with the steam turbine, a low-pressure output end of the steam turbine is communicated with the condensing-evaporating device, and the steam turbine is communicated with the generator.
Optionally, the temperature varying device includes a heat exchanger mechanism and a blower, the heat exchange mechanism has a low-pressure loop and a high-pressure loop, an inlet end of the blower is communicated with the low-pressure loop of the heat exchange mechanism, and an outlet end of the blower is communicated with the high-pressure loop of the heat exchange mechanism.
Optionally, the heat exchange mechanism comprises a first heat exchanger, a recuperative heat exchanger and a second heat exchanger, the recuperative heat exchanger, the second heat exchanger and the blower being connected in series, the first heat exchanger being connected in parallel with the second heat exchanger.
Optionally, the temperature varying device further comprises a temperature regulating valve, the temperature regulating valve is arranged on the high-pressure loop at the outlet of the blower and is used for controlling the flow distribution of the high-temperature high-pressure steam output by the blower between the first heat exchanger and the second heat exchanger and controlling the temperature range of the high-temperature steam output by the first heat exchanger.
Optionally, the heat exchange mechanism further comprises a third heat exchanger for increasing the temperature difference between the high-pressure circuit and the low-pressure circuit at the high-temperature end of the second heat exchanger.
Optionally, the blower and/or the first heat exchanger and/or the second heat exchanger and/or the third heat exchanger are provided with an insulation layer.
Optionally, the temperature varying device and the rankine cycle turbine generator system use the same or different working media.
Optionally, the same working medium can be selected when the working temperatures of the temperature changing device and the rankine cycle steam turbine generator system are below 260 ℃, and different working media are preferred when the working temperatures of the temperature changing device and the rankine cycle steam turbine generator system are above 260 ℃, for example, carbon dioxide is used as the temperature changing device, and water vapor is used as the rankine cycle steam turbine generator system.
Optionally, the working fluid comprises one or more of water, refrigerant r32, nitrogen, carbon dioxide and freon.
The zero-carbon cold power generator provided by the utility model fundamentally solves the energy problem of human forever, simultaneously solves the problems of carbon emission and air pollution, and has great significance for the development of the current society.
The zero-carbon cold power generator continuously absorbs heat in the environment during working, a refrigeration effect is naturally generated, and the temperature changing device can increase the temperature of low-temperature gas by using less energy, so that the five-joint production of cold water, hot water, electricity, warm air and industrial steam can be easily realized.
The whole zero-carbon cold power generator has the advantages of no raw material inlet and outlet and no pollutant generation, no place for air and water, small volume, light weight and low cost, can meet the energy requirements of most fixed or mobile loads on site, and provides sufficient basic guarantee for realizing comprehensive electrification of the whole human society.
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FIG. 1 is a schematic diagram of one embodiment of a zero carbon cold-power generator of the present invention;
icon: the method comprises the following steps of 1-condensing-evaporator, 2-temperature changing device, 3-first heat exchanger, 4-recuperative heat exchanger, 5-high pressure loop, 6-low pressure loop, 7-second heat exchanger, 7A-third heat exchanger, 8-blower, 9-temperature regulating valve, 10-liquid pressure pump, 11-steam turbine, 12-generator and 13-energy collecting system.
Detailed Description
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic diagram of an embodiment of the zero-carbon cold power generator according to the present invention, and as shown in fig. 1, the zero-carbon cold power generator includes an energy collection system 13, a condenser-evaporator 1, a temperature varying device 2 and a rankine cycle turbine generator system, wherein the energy collection system is configured to collect heat energy in an environment and supply a liquid working medium in the condenser-evaporator, the liquid working medium is converted into low-temperature steam after absorbing the heat energy, and the temperature varying device is configured to convert the low-temperature steam generated by the condenser-evaporator into high-temperature heat energy and transmit the high-temperature heat energy to the rankine cycle turbine generator system, and simultaneously convert the vapor working medium into the liquid working medium and return the liquid working medium to the condenser-evaporator; the Rankine cycle steam turbine generator system is used for converting high-temperature heat energy generated by the temperature changing device into electric energy, meanwhile, generated exhaust gas is conveyed to the condenser-evaporator to be subjected to energy transfer to form low-temperature liquid, the low-temperature liquid is pressurized and then subjected to heat exchange with high-temperature steam of the temperature changing device to form high-temperature high-pressure steam, and the high-temperature high-pressure steam drives the Rankine cycle steam turbine generator system to perform continuous cycle of heat energy and electric energy conversion.
The above-mentioned ambient heat energy includes air, water or all other available low-temperature ambient heat energy.
In one embodiment, the rankine cycle turbogenerator system comprises a liquid booster pump 10, a steam turbine 11 and a generator 12, wherein a low-pressure end of the liquid booster pump is communicated with a condenser-evaporator, a high-pressure end of the liquid booster pump is communicated with a low-temperature inlet end of a temperature changing device, a low-temperature outlet end of the temperature changing device is communicated with the steam turbine, a low-pressure output end of the steam turbine is communicated with the condenser-evaporator, and the steam turbine is communicated with the generator.
In one embodiment, the means for changing temperature comprises a heat exchanger mechanism having a low pressure loop 6 and a high pressure loop 5, and a blower 8 having an inlet end in communication with the low pressure loop of the heat exchanger mechanism and an outlet end in communication with the high pressure loop of the heat exchanger mechanism. Under the pumping action of the blower, low-temperature steam enters a low-pressure loop of the heat exchange mechanism, is pressurized and heated by the blower and then returns to a high-pressure loop of the heat exchange mechanism, the high-pressure loop and the low-pressure loop of the heat exchange mechanism have temperature difference, and the high-pressure loop heats the low-pressure loop to realize enthalpy increase of the low-pressure loop and enthalpy decrease of the high-pressure loop.
Optionally, the heat exchange mechanism comprises a first heat exchanger 3, a recuperative heat exchanger 4 and a second heat exchanger 7, the recuperative heat exchanger, the second heat exchanger and the blower being connected in series, the first heat exchanger being connected in parallel with the second heat exchanger.
Optionally, the temperature varying device further comprises a temperature regulating valve 9, which is configured in the high-pressure loop of the temperature varying device and is used for controlling the flow distribution of the high-temperature and high-pressure steam output by the blower between the first heat exchanger and the second heat exchanger, so as to control the temperature range of the high-temperature steam output by the first heat exchanger 3.
Optionally, the heat exchange mechanism further comprises a third heat exchanger 7A for increasing the temperature difference between the high pressure circuit and the low pressure circuit at the high temperature end of the second heat exchanger.
Optionally, the blower and/or the first heat exchanger and/or the second heat exchanger and/or the third heat exchanger are provided with an insulation layer.
Besides the temperature changing device, other components which have larger temperature difference with the environment also have insulating layers.
In one embodiment, the temperature changing device comprises an evaporator, a regenerative heat exchanger, a second heat exchanger, a cooler and a blower, a turbine generator Rankine cycle system is composed of a liquid pressurizing pump, a heater, a turbine, a generator and a condenser, the evaporator of the temperature changing device is combined with the condenser of the turbine generator Rankine cycle system to form a condensation-evaporator, the cooler of the temperature changing device is connected with the heater of the turbine generator Rankine cycle system to form the first heat exchanger, air or water enters the evaporator to exchange heat with liquid working media, the air or water is cooled and changed into cold, the liquid working media are evaporated, and environmental energy is changed into low-temperature steam; the exhaust gas of the steam turbine enters an evaporator to exchange heat with the liquid working medium, the exhaust gas is condensed into liquid, and the energy in the exhaust gas is converted into low-temperature steam, so that the evaporator of the temperature changing device is connected with the exhaust gas end of the Rankine cycle, the latent heat in the exhaust gas of the steam turbine is transferred into the liquid working medium of the evaporator, and the exhaust gas is condensed into liquid; the liquid working medium of the evaporator is changed into low temperature under the action of the latent heat of the exhaust gas to form a condensing-evaporator, and a low-temperature cold source is also manufactured; the heat recovery heat exchanger with a high-low pressure loop, a second heat exchanger and a blower are connected in series to form the heat recovery heat exchanger, the second heat exchanger and the blower are connected in series, low-temperature steam enters from the low-pressure loop under the pumping action of the blower, the low-temperature steam returns to the high-pressure loop after being pressurized and heated by the blower, temperature difference occurs in the high-low pressure loop in the second heat exchanger, so that the low-pressure loop is heated by the high-pressure loop, constant-pressure enthalpy increase and constant-pressure enthalpy drop of the low-pressure loop are realized, the high-temperature steam is continuously cooled and finally changed into liquid to return to an evaporator, and the liquid is repeatedly circulated, so that the temperature of the gas in the inlet loop of the blower is greatly increased by the heat exchanger, and the temperature of the inlet steam can be greatly increased as required by the blower only needing small potential energy compression, thereby realizing the temperature increasing function of the self-feedback hot compressed steam; sending the high-temperature steam with the increased temperature to a first heat exchanger connected with a Rankine cycle heater for heat exchange, after cooling the high-temperature steam in a cooler, returning the high-temperature steam to the low-temperature end of a second heat exchanger, continuously condensing the high-temperature steam into liquid, and returning the liquid to an evaporator; the Rankine cycle heater obtains energy, and the high-pressure liquid is changed into high-temperature high-pressure steam, so that energy is provided for the operation of a steam turbine; the condenser-evaporator is provided with a low-temperature cold source, so that the condensing temperature of the exhaust gas of the steam turbine is not influenced by the environmental temperature, and the temperature of a water vapor system can be reduced to be close to zero, thereby improving the power generation efficiency of the steam turbine generator unit, reducing the temperature of a nitrogen system to be 196 ℃ below zero, and creating conditions for the operation of a cryogenic steam turbine; the cooler of the temperature changing device transfers the high-temperature steam with the increased ambient heat energy temperature to the heater of the Rankine cycle, so that a high-temperature heat source is provided for the Rankine cycle, and the Rankine cycle does not need any fossil energy, so that the aim of converting the ambient heat energy into electric energy is fulfilled. The temperature changing device can improve low-temperature energy to high-temperature energy with the energy efficiency ratio of 1: 30-50. The power consumed by the temperature changing device for improving the exhaust gas energy of the system and the environmental heat source from low temperature to high temperature is only about 5% of the latent heat power of the working medium, the energy consumed by the temperature changing device is mainly used for dragging the blower, the blower can be dragged by a single motor or a small-sized cold Rankine cycle turbine, and the energy consumed by the blower during working is converted into the heat of the temperature changing device and returns to a high-temperature high-pressure loop of the turbine, so that the blower does not consume energy essentially.
In the above embodiment, the energy collection system absorbs external environmental energy to complete energy collection, after the regenerative heat exchanger and the second heat exchanger raise low-temperature steam into high-temperature steam, the cooler is connected with the high-temperature high-pressure heater to form a cooling-heating device, i.e., the first heat exchanger, which transfers the energy of the high-temperature steam to the rankine cycle system of the steam turbine, thereby perfectly converting the environmental energy into electric energy.
The zero-carbon cold power generator can simultaneously produce five functions of refrigeration, hot water, heating, industrial steam and power generation by utilizing the advantages of the temperature changing device.
The heat source used may be any temperature above absolute zero, and from the standpoint of economic utility and convenience, it is practically desirable that the fluid temperature of the heat source is not lower than-200 ℃.
The temperature changing device completes the function of a condenser in a common Rankine cycle under the condition of no low-temperature cold source, so that an environment heat source generator is realized. The low-temperature gas generated by the evaporator of the temperature changing device is far lower than the ambient temperature, (namely, the refrigeration function) utilizes the temperature difference to continuously receive the ambient energy in the ambient heat source and serve as the energy source of the steam turbine, so that the zero-carbon cold power generator is called as the ambient energy source.
In one embodiment, the same working medium can be selected when the working temperature of the temperature changing device and the Rankine cycle steam turbine generator system is below 260 ℃, different working media are preferred when the working temperature is higher than 260 ℃, for example, carbon dioxide is used for the temperature changing device, and water vapor is used for the Rankine cycle steam turbine generator system. If the same is called single working medium, if different is called double working medium, the same or different working medium can be selected according to the temperature of the heat source, if the heat source is normal temperature environment heat source such as water, air, geothermal source, industrial waste water and the like, the steam turbine and the temperature changing device can adopt the same or different working medium, the circulating working medium of the steam turbine can select water, refrigerant r32, carbon dioxide, nitrogen, various Freons and other various refrigerants, the working medium of the temperature changing device can select carbon dioxide and other refrigerants, preferably carbon dioxide, refrigerant r23, r32 and nitrogen. Different working media are adopted to optimize and reduce the cost, and the Rankine cycle and the temperature changing device have different requirements on materials.
In each of the above embodiments, preferably, the second heat exchanger 7 is an isenthalpic heat exchanger, and the third heat exchanger 7A is a temperature difference amplifying heat exchanger.
The utility model also provides a method for generating electricity by the zero-carbon cold-power generator, which comprises the following steps:
collecting air, water or all other available low-temperature environment heat energy through an energy collecting system, and supplying the heat energy to a condenser-evaporator;
absorbing the heat energy by a liquid working medium in the condenser-evaporator, converting the heat energy into low-temperature steam, and supplying the low-temperature steam to the temperature changing device;
converting low-temperature steam generated by the condenser-evaporator into high-temperature heat energy through a temperature changing device, transmitting the high-temperature heat energy to a Rankine cycle turbogenerator system, and simultaneously converting a vaporous working medium into a liquid working medium to return to the condenser-evaporator;
the high-temperature heat energy generated by the temperature changing device is converted into electric energy through the Rankine cycle steam turbine generator system, meanwhile, the generated exhaust gas is transmitted to the condenser-evaporator for energy transfer to form low-temperature liquid, the low-temperature liquid is pressurized and then subjected to heat exchange with the high-temperature steam of the temperature changing device to form high-temperature high-pressure steam, and the high-temperature high-pressure steam drives the Rankine cycle steam turbine generator system to perform continuous cycle of heat energy and electric energy conversion.
Optionally, the step of transferring the high temperature heat energy to the rankine cycle turbine generator system comprises:
pumping the low-temperature liquid in the condenser-evaporator by a liquid pressure pump to convert the low-temperature liquid into low-temperature high-pressure liquid;
converting the low-temperature high-pressure liquid into high-temperature high-pressure steam by a temperature changing device;
sending the high-temperature high-pressure steam to a Rankine cycle steam turbine generator system;
the low-temperature exhaust gas generated by the steam turbine generator is sent to the condensing-evaporating device.
In one embodiment, the zero-carbon cold power generator is a 10MW condensing steam turbine generator, the steam inlet pressure of the steam turbine is 3.35 MPa, the air inlet temperature is 435 ℃, the steam exhaust temperature is 35 ℃, and the exhaust pressure is 0.005 MPa; the Rankine cycle loop adopts water as a working medium, and the temperature changing device loop adopts carbon dioxide as the working medium; river water with the temperature of 15 ℃ flows into the condensing-evaporator, heat exchange is carried out between the river water and carbon dioxide liquid in the condensing-evaporator, the river water is discharged after the temperature is reduced to 0 ℃, and after the carbon dioxide liquid obtains the energy of the river water, liquid working media with the temperature of-5 ℃ are converted into low-temperature steam with the temperature of-5 ℃, so that the energy collection is realized; under the pumping action of a blower of the temperature changing device, carbon dioxide low-temperature steam at the temperature of-5 ℃ enters from a low-pressure loop 6, the carbon dioxide low-temperature steam is pressurized and heated by the blower 8 and then returns to a high-pressure loop 5, the temperature difference occurs between a high-pressure loop and a low-pressure loop in a regenerative heat exchanger and a second heat exchanger, so that the high-pressure loop heats the low-pressure loop, the constant-pressure enthalpy increase of the low-pressure loop and the constant-pressure enthalpy drop of the high-pressure loop are realized, the high-temperature steam is continuously cooled and finally becomes liquid to return to a condenser-evaporator to be repeatedly circulated, the temperature of the low-pressure loop gas of the blower 8 is greatly increased by the second heat exchanger, and the blower 8 only needs small potential energy to be compressed, so that the temperature of the inlet steam can be greatly increased according to needs; the high-temperature steam with the increased temperature is sent to the first heat exchanger 3 from the high-pressure loop of the blower 8 for cooling, then returns to the low-temperature end of the second heat exchanger, is continuously cooled into liquid, and returns to the condenser-evaporator, thereby realizing the self-feedback heat-compression steam temperature-increasing function; after a steam turbine and a generator in a Rankine cycle start to work, exhaust gas exhausted by the steam turbine enters a condensing-evaporator 1 to exchange heat with carbon dioxide liquid, the exhaust gas is condensed and returned to a liquid pressurizing pump 10, the carbon dioxide liquid with the energy of the exhaust gas is evaporated into low-temperature steam at minus 5 ℃, and the low-temperature steam and low-temperature steam generated by river water energy in the evaporator 1 are sent to a temperature changing device to be heated and then sent to a first heat exchanger 3 again to provide energy for the steam turbine 11, so that energy conversion can be realized only by a single heat source;
the Rankine cycle adopts water as a working medium, the working medium is pressurized to 3.5 MPa from 0.1 MPa by the liquid pressurizing pump 10 in consideration of pressure loss and temperature loss of a high-pressure loop, the working medium is heated to 450 ℃ by the temperature changing device 2, and the generating capacity of the unit is 11300KW in consideration of energy consumption of the liquid pressurizing pump 10 and the blower 8;
3.35 MPa, and the enthalpy value of the water vapor is 3306kj/kg at 435 ℃; the enthalpy value of the steam is 2565kj/kg at the temperature of 0.005 MPa and 35 ℃, the theoretical enthalpy difference generated when the steam turbine works is 3306-.
In order to achieve the aim of generating 1 ten thousand kilowatts, the temperature changing device needs to lift 57855 kilowatts of external low-temperature heat energy and steam turbine exhaust gas energy from low-temperature steam at minus 5 ℃ to high-temperature steam at 450 ℃, a loop of the temperature changing device adopts carbon dioxide as a working medium, and the latent heat of evaporation of carbon dioxide liquid at 3 MPa and minus 5 ℃ is 248kj, so that the flow rate of the working medium of the temperature changing device per second is 57855/248-233 kg, the carbon dioxide gas at 3 MPa and 445 ℃ is isentropically compressed to 450 ℃, the required power of 3.1 MPa is (5kj/kg), and 233-5-1166 kw;
the temperature changing device completes the function of a condenser in a common Rankine cycle under the condition of no low-temperature cold source, so that a single heat source generator is realized. The zero-carbon cold power generator is characterized in that an environment heat source is used as a high-temperature heat source, the low-temperature generated by the condenser-evaporator 1 is far lower than the environment temperature, and the generated temperature difference is used for continuously receiving the energy in the environment heat source as an energy source of the Rankine cycle steam turbine generator, reducing the environment temperature and realizing the refrigeration function.
The system efficiency of the generator is 100%, although the system efficiency of the Rankine cycle is lower than 20%, the residual heat energy in the exhaust gas and the energy consumed by the temperature changing device are all returned to the high-temperature and high-pressure end of the turbine through the temperature changing device to be circulated together with the externally input heat energy, so that the heat energy is inevitably wasted, and the heat energy is reduced to electric energy in the turbine 11 and the generator 12 and is output.
The output power of a single machine can be from a minimum of a few watts to a few gigawatts, and any system formed by utilizing the turbine, the turbine and the expansion machine belongs to the protection scope of the utility model.
Embodiment 2.1000 transformation of megawatt ultra-supercritical generator set
In the beginning of 2021, 128 ultra-supercritical generator sets of 1000 mw which have been put into use in all china are already provided, and the present embodiment intends to modify such a generator set, and the technical parameters are as follows:
intake pressure/temperature; 27Mpa/600/600 intermediate reheating;
the rated main steam flow is 2733.4t/h (rated working condition);
the exhaust pressure and the temperature are as follows: 5 Kpa/25;
the enthalpy value of 27Mpa/600 DEG unit water vapor is 3475kj/kg under the physical examination table, the flow rate of main steam per second is 2733.4 × 1000/3600 ═ 759kg, the enthalpy value of main steam per unit time is 759 × 3475 ═ 2637525kj/s, and the system efficiency is 1000M/2637.525M ═ 0.379
In consideration of temperature difference, the temperature changing device needs to raise the carbon dioxide steam at the temperature of-5 ℃ to 650 ℃, the latent heat of vaporization of the carbon dioxide gas is 248kj/kg as in the embodiment 1, and therefore the mass flow rate per unit time is 2637525/248-10635 kg/s
The power N-10635-5-53175 KW required by the blower 8
A cold power engine of 60 megawatts is selected separately as the driving power of the blower 8.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (9)
1. A zero carbon cold power generator, its characterized in that: the system comprises an energy acquisition system, a condensation-evaporator, a temperature changing device and a Rankine cycle steam turbine generator system, wherein the energy acquisition system is used for acquiring heat energy in the environment and supplying the heat energy to a liquid working medium in the condensation-evaporator, the liquid working medium absorbs the heat energy and then is converted into low-temperature steam, the temperature changing device is used for converting the low-temperature steam generated by the condensation-evaporator into high-temperature heat energy and transmitting the high-temperature heat energy to the Rankine cycle steam turbine generator system, and meanwhile, the vapor working medium is converted into the liquid working medium and returns to the condensation-evaporator; the Rankine cycle steam turbine generator system is used for converting high-temperature heat energy generated by the temperature changing device into electric energy, meanwhile, generated exhaust gas is conveyed to the condenser-evaporator to be subjected to energy transfer to form low-temperature liquid, the low-temperature liquid is pressurized and then subjected to heat exchange with high-temperature steam of the temperature changing device to form high-temperature high-pressure steam, and the high-temperature high-pressure steam drives the Rankine cycle steam turbine generator system to perform continuous cycle of heat energy and electric energy conversion.
2. The zero-carbon cold-power generator of claim 1, wherein: the Rankine cycle steam turbine generator system comprises a liquid pressure pump, a steam turbine and a generator, wherein the low-pressure end of the liquid pressure pump is communicated with a condensing-evaporating device, the high-pressure end of the liquid pressure pump is communicated with the low-temperature inlet end of a temperature changing device, the low-temperature outlet end of the temperature changing device is communicated with the steam turbine, the low-pressure output end of the steam turbine is communicated with the condensing-evaporating device, and the steam turbine is communicated with the generator.
3. The zero-carbon cold-power generator of claim 1 or 2, wherein: the temperature changing device comprises a heat exchanger mechanism and a blower, wherein the heat exchanger mechanism is provided with a low-pressure loop and a high-pressure loop, the inlet end of the blower is communicated with the low-pressure loop of the heat exchange mechanism, and the outlet end of the blower is communicated with the high-pressure loop of the heat exchange mechanism.
4. The zero-carbon cold-power generator of claim 3, wherein: the heat exchange mechanism comprises a first heat exchanger, a regenerative heat exchanger and a second heat exchanger, the regenerative heat exchanger, the second heat exchanger and the blower are sequentially connected in series, and the first heat exchanger is connected with the second heat exchanger in parallel.
5. The zero-carbon cold-power generator of claim 4, wherein: the temperature changing device also comprises a temperature adjusting valve, wherein the temperature adjusting valve is arranged in a high-pressure loop of the temperature changing device and is used for controlling the flow distribution of the high-temperature high-pressure steam output by the blower between the first heat exchanger and the second heat exchanger so as to control the temperature range of the high-temperature steam output by the first heat exchanger.
6. The zero-carbon cold-power generator of claim 4, wherein: the heat exchange mechanism further comprises a third heat exchanger, and the third heat exchanger is used for increasing the temperature difference between the high-pressure loop and the low-pressure loop at the high-temperature end of the second heat exchanger.
7. The zero-carbon cold-power generator of claim 6, wherein: the blower and/or the first heat exchanger and/or the second heat exchanger and/or the third heat exchanger are provided with an insulating layer.
8. The zero-carbon cold-power generator of claim 1, wherein: the temperature changing device and the Rankine cycle steam turbine generator system adopt the same working medium when the working temperature is below 260 ℃, and adopt different working media when the working temperature is above 260 ℃.
9. The zero-carbon cold-power generator of claim 7, wherein: the working fluid comprises one or more of water, refrigerant r32, nitrogen, carbon dioxide and freon.
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| CN202122278125.9U CN215890117U (en) | 2021-09-18 | 2021-09-18 | Zero-carbon cold power generator |
| PCT/CN2022/076893 WO2023040188A1 (en) | 2021-09-18 | 2022-02-18 | Zero-carbon cold power generator and power generation method therefor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251141A (en) * | 2021-09-18 | 2022-03-29 | 成都佳灵绿色能源有限责任公司 | Zero-carbon cold power generator and power generation method thereof |
| CN114248629A (en) * | 2021-09-18 | 2022-03-29 | 成都佳灵绿色能源有限责任公司 | Automobile air energy generator and method for driving automobile |
| WO2023040192A1 (en) * | 2021-09-18 | 2023-03-23 | 成都佳灵绿色能源有限责任公司 | Temperature-changing device and system, and method for increasing temperature of low-temperature steam |
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2021
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251141A (en) * | 2021-09-18 | 2022-03-29 | 成都佳灵绿色能源有限责任公司 | Zero-carbon cold power generator and power generation method thereof |
| CN114248629A (en) * | 2021-09-18 | 2022-03-29 | 成都佳灵绿色能源有限责任公司 | Automobile air energy generator and method for driving automobile |
| WO2023040192A1 (en) * | 2021-09-18 | 2023-03-23 | 成都佳灵绿色能源有限责任公司 | Temperature-changing device and system, and method for increasing temperature of low-temperature steam |
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