CN217843807U - Aqueous medium energy storage power generation steam supply system - Google Patents
Aqueous medium energy storage power generation steam supply system Download PDFInfo
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- CN217843807U CN217843807U CN202221451100.2U CN202221451100U CN217843807U CN 217843807 U CN217843807 U CN 217843807U CN 202221451100 U CN202221451100 U CN 202221451100U CN 217843807 U CN217843807 U CN 217843807U
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Abstract
The utility model provides an aqueous medium energy storage electricity generation supplies steam system which characterized in that: the system comprises a heat collecting and heating water medium unit, a heat storage unit and a power generation and steam supply unit; the heat collecting and heating water medium unit comprises a low-temperature water storage device, a first heat absorber and a second heat absorber which are connected in parallel; the power generation steam supply unit comprises a port B for communicating a steam channel, a steam turbine and a generator; the heat storage unit consists of a high-temperature heat storage device and a plurality of high-temperature and high-pressure water storages; the water medium energy storage power generation steam supply system can continuously and stably supply steam, and is a steam supply system integrating heat production, heat storage, heat supply and power generation; the method can meet the industrial steam requirements in rainy days and at night on the premise of not investing in building a gas boiler, can replace the existing gas, fuel oil or coal-fired boiler with pollution emission, and easily realizes the national important strategies of carbon peak reaching and carbon neutralization.
Description
Technical Field
The utility model relates to a new forms of energy technical field, concretely relates to aqueous medium energy storage electricity generation supplies steam system.
Background
With the rapid growth of industrial development and energy consumption, the problems of energy safety and environmental pollution are increasingly serious, the environmental protection of the country is continuously increased, the coal-fired boilers are modified all over the country, the remarkable effect is achieved, and the trend of vigorously promoting clean production and adjusting energy structures is inevitable. The solar energy is taken as an important renewable energy source, has the advantages of sufficient resources, long service life, wide distribution, safety, cleanness and reliable technology, can obviously reduce environmental pollution by developing and utilizing the solar energy, relieves the energy crisis, and is expected to become an important alternative energy source of fossil energy.
At present, a steam supply device designed by solar energy mainly uses a boiler steam supply system which mainly utilizes light and heat and assists electric heat, but a heat storage device is not arranged, so that the operation economy is poor. With the development of the technology, the devices of the type are provided with heat storage equipment, but the heat storage medium is mainly molten salt, but the molten salt cannot directly supply steam, and heat exchange is required to be carried out between the molten salt and an aqueous medium to heat water to supply steam, so that the energy loss is large and the cost is high. Therefore, the urgent need for a device capable of integrating heat, steam and power generation is urgent for the present field.
Disclosure of Invention
The not enough to prior art, the utility model provides an aqueous medium energy storage electricity generation supplies steam system to solve the one or more technical problem that the aforesaid exists, the utility model discloses can make full use of solar energy resource, realize the optimal cooperation, realize heat-retaining, the electricity generation that uses the steam supply to give first place to.
In order to realize the technical scheme, the utility model provides an aqueous medium energy storage power generation steam supply system, which comprises a heat collection and heating aqueous medium unit, a power generation steam supply unit and a heat storage unit;
the heat collecting and heating water medium unit comprises a low-temperature water storage device, a first heat absorber and a second heat absorber which are connected in parallel; the outlet of the low-pressure water storage device is respectively communicated with the inlets of the first heat absorber and the second heat absorber;
the power generation steam supply unit comprises a port B for communicating a steam channel, a steam turbine and a generator; the high-pressure turbine is electrically connected with the generator; an inlet of the high-pressure turbine is respectively communicated with outlets of the first heat absorber and the second heat absorber; the outlet of the high-pressure turbine is communicated with a steam supply channel B;
the heat storage unit consists of a high-temperature heat storage device and a plurality of high-temperature and high-pressure water storages; a high-temperature heat storage medium and a heat transfer coil pipe uniformly distributed in the high-temperature heat storage medium are arranged in the high-temperature heat storage device, and steam flows through the coil pipe to realize heat exchange between the steam and the high-temperature heat storage medium; one end of the coil pipe in the high-temperature heat storage device is respectively communicated with an inlet of the high-pressure turbine and outlets of the first heat absorber and the second heat absorber; the other end of the coil pipe in the high-temperature heat storage device is respectively communicated with a bottom inlet of the high-temperature and high-pressure water storage and a top outlet of the high-temperature and high-pressure water storage; the other outlet of the high-temperature and high-pressure water storage is communicated with the outlet of the low-temperature water storage device.
Further, the high-temperature heat storage medium in the high-temperature heat storage device is one of molten salt, granular or powdery solid and liquid-solid mixed medium.
Furthermore, the heat transfer coil pipes are uniformly distributed in the high-temperature heat storage medium in the high-temperature heat storage device, and fins can be added outside the coil pipes to enhance heat transfer.
The heat absorption device further comprises a balance steam storage tank, wherein an inlet of the balance steam storage tank is respectively communicated with outlets of the coil pipe, the first heat absorber and the second heat absorber in the high-temperature heat storage device; and the outlet of the balance steam storage tank is communicated with the inlet of the high-pressure steam turbine.
Further, a purification water supplementing device is mounted at the inlet of the low-temperature water storage device and supplies purified water after treatment to the low-temperature water storage device; a first water pump and a first valve are connected between the purification water replenishing device and the low-temperature water storage device; and the outlet of the low-temperature water storage device is sequentially connected with a second water pump and a second valve.
Further, the system also comprises a first tracking condenser and a second tracking condenser; the first and second tracking condensers provide concentrated solar heat to the first and second heat sinks, respectively.
Further, a first flow control valve and a second flow control valve are respectively connected between the second valve and the first heat absorber and between the second valve and the second heat absorber; the outlets of the first heat absorber and the second heat absorber are respectively provided with a first sensor and a second sensor; a third valve is arranged between the first sensor and the inlet of the balance steam storage tank; a sixth valve is arranged between the second sensor and the heat transfer coil of the high-temperature heat storage device; an eleventh valve is arranged between the heat transfer coil of the high-temperature heat storage device and the inlet of the balance steam storage tank.
Furthermore, a tenth valve is arranged at the inlet at the bottom end of the high-temperature and high-pressure water storage and the heat transfer coil of the high-temperature heat storage device; a fourth valve is arranged between the outlet at the top end of the high-temperature and high-pressure water storage device and the heat transfer coil of the high-temperature heat storage device; a third water pump and a fifth valve are sequentially connected between the other outlet of the high-temperature and high-pressure water storage and the second flow control valve; and a third sensor is arranged on the high-temperature and high-pressure water storage device.
Furthermore, the high-temperature and high-pressure water storage is made of steel metal materials, and is resistant to pressure of more than 25MPa and high-temperature of more than 370 ℃.
Furthermore, the system also comprises a medium-low pressure steam turbine set, a condenser, a condensate water storage and a fourth water pump; the inlet of the medium-low pressure turbine set is communicated with the outlet of the high pressure turbine; the tail end outlet of the middle-low pressure steam turbine unit is communicated with the inlet of the condenser, the outlet of the condenser is communicated with the inlet of the condensed water storage device, and the outlet of the condensed water storage device is communicated with the inlet of the low-temperature water storage device through a fourth circulating pump; a vacuum pump for vacuumizing is also arranged at the condenser storage; a cooling tower for stopping cooling capacity supply for the condenser is arranged outside the condenser.
Compared with the prior art, the utility model has the advantages of it is following: the water medium energy storage power generation steam supply system can continuously and stably supply steam, and is a steam supply system integrating heat production, heat storage, heat supply and power generation; the industrial steam requirements in rainy days and at night can be met on the premise of building a gas boiler without investment, the existing pollution-emission gas, fuel oil or coal-fired boiler can be replaced, and the national important strategies of carbon peak reaching and carbon neutralization are easily realized; meanwhile, the system directly adopts water as the heat storage medium and then is directly used for the work doing and steam supplying of the steam turbine, so that the energy loss of heat exchange between molten salt or heat transfer oil serving as the heat storage medium and a working medium is avoided, and the heat utilization efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the water medium energy storage power generation steam supply system of the present invention.
Fig. 2 is the optimized structure schematic diagram of the water medium energy storage, power generation and steam supply system of the utility model.
In the figure: 1. purifying the water replenishing device; 2. a low temperature water reservoir; 31. a first tracking condenser; 32. a second tracking condenser; 41. a first heat absorber; 42. a second heat sink; 51. a first sensor; 52. a second sensor; 53. a third sensor; 61. a first valve; 62. a second valve; 63. a third valve; 641. a fourth valve; 642. a tenth valve; 65. a fifth valve; 661. a sixth valve; 662. an eleventh valve; 67. a seventh valve; 68. an eighth valve; 69. a ninth utility model; 71. a first water pump; 72. a second water pump; 73. a third water pump; 74. a fourth water pump; 81. a first flow control valve; 82. a second flow control valve; 9. a balanced vapor storage tank; 10. a steam turbine; 11. a generator; 12. a condenser; 13. a condensate storage; 14. a vacuum pump; 15. a high-temperature and high-pressure water storage; 16. a cooling tower; 17. a high temperature heat storage device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.
Referring to fig. 1, the water medium energy storage, power generation and steam supply system of the present invention includes a heat collecting and heating water medium unit, a heat storage unit and a power generation and steam supply unit; the heat collecting and heating water medium unit comprises a purifying water replenishing device 1, a low-temperature water storage device 2, a first tracking condenser lens 31, a second tracking condenser lens 32, a first heat absorber 41 and a second heat absorber 42 which are connected in parallel; the outlet of the purifying water replenishing device 1 is communicated with the inlet of the low-temperature water storage device 2; the outlet of the low-pressure water storage device 2 is respectively communicated with the inlets of the first heat absorber 41 and the second heat absorber 42; the first tracking condenser 31 and the second tracking condenser 32 provide the first heat sink 41 and the second heat sink 42, respectively, with concentrated heat. The power generation and steam supply unit comprises a balance steam storage tank 9, a steam turbine 10 and a generator 11; the inlet of the equilibrium vapor storage tank 9 is respectively communicated with the outlets of the first heat absorber 41 and the second heat absorber 42; the outlet of the balance steam storage tank 9 is communicated with the inlet of a high-pressure steam turbine 10; the high-pressure turbine 10 is electrically connected with a generator 11; the outlet of the high pressure turbine 10 is communicated with a steam supply channel B. The heat storage unit consists of a high-temperature heat storage device 17 and a plurality of high-temperature and high-pressure water storages 15; a high-temperature heat storage medium and a heat transfer coil pipe uniformly distributed in the high-temperature heat storage medium are arranged in the high-temperature heat storage device 17, and steam flows through the coil pipe to realize heat exchange between the steam and the heat storage medium in the high-temperature heat storage device 17; one end of the coil pipe in the high-temperature heat storage device 17 is respectively communicated with the inlet of the balance steam storage tank 9 and the outlets of the first heat absorber 41 and the second heat absorber 42; the other end of the coil pipe in the high-temperature heat storage device 17 is respectively communicated with the bottom inlet of the high-temperature and high-pressure water storage 15 and the top outlet of the high-temperature and high-pressure water storage 15; the other outlet of the high-temperature and high-pressure water storage 15 is communicated with the outlet of the low-temperature water storage 2.
The high-temperature heat storage medium in the high-temperature heat storage device 17 may be molten salt, granular or powdery solid, or a liquid-solid mixed medium. The heat transfer coil pipes are evenly distributed in the high-temperature heat storage medium in the high-temperature heat storage device 17, and fins can be added outside the coil pipes to enhance heat transfer.
Referring to fig. 1, a first water pump 71 and a first valve 61 are sequentially connected between the purification water replenishing device 1 and the low-temperature water storage device 2, and positions of the first water pump 71 and the first valve 61 can be interchanged.
The outlet of the low-temperature water storage device 2 is connected with a second water pump 72 and a second valve 62 in sequence, and the positions of the second water pump 72 and the second valve 62 can be interchanged.
A first flow control valve 81 and a second flow control valve 82 are respectively connected between the second valve 62 and the first heat absorber 41 and the second heat absorber 42; the outlets of the first heat absorber 41 and the second heat absorber 42 are respectively provided with a first sensor 51 and a second sensor 52; the first sensor 51 and the second sensor 52 detect the output medium temperature at the outlet of the first heat absorber 41 and the second heat absorber 42, respectively, so that the first flow control valve 81 and the second flow control valve 82 control the water inflow according to the output temperature, and the first heat absorber 41 and the second heat absorber 42 output high-temperature high-pressure water vapor or high-temperature high-pressure saturated water.
A seventh valve 67 is connected between the first sensor 51 and the second sensor 52; a third valve 63 is arranged between the first sensor 51 and the inlet of the balance steam storage tank 9; a sixth valve 661 is arranged between the second sensor 52 and the heat transfer coil of the high temperature heat storage device 17; an eleventh valve 662 is arranged between the heat transfer coil of the high-temperature heat storage device 17 and the inlet of the balance steam storage tank 9.
A tenth valve 642 is arranged at the inlet at the bottom end of the high-temperature and high-pressure water storage 15 and the heat transfer coil of the high-temperature heat storage device 17; a fourth valve 641 is arranged at the outlet at the top end of the high-temperature and high-pressure water storage 15 and the heat transfer coil of the high-temperature heat storage device 17; a third water pump 73 and a fifth valve 65 are sequentially connected between the other outlet of the high temperature and high pressure water storage 15 and the second flow control valve 82, and the positions of the third water pump 73 and the fifth valve 65 can be interchanged; the high temperature and high pressure water storage 15 is provided with a third sensor 53 for detecting the pressure, water level and steam temperature in the high temperature and high pressure water storage 15;
the second water pump 72 is a high pressure water pump; the third water pump 73 is a medium-high temperature water pump.
The purifying water supplementing device 1 sucks domestic water through the port A, the domestic water is treated, and sufficient circulating purified water is supplemented to the low-temperature water storage device 2 according to the requirement.
And the port B is communicated with the steam supply channel and the steam demand end.
The high-temperature and high-pressure water storage is made of metal materials such as steel, and the like, and can resist pressure of more than 25MPa and resist high temperature of more than 370 ℃.
Since the steam output by the heat absorber and the heat storage unit is unstable, the balance steam storage tank 40 is designed to provide stable steam for the steam turbine, so as to avoid the steam from impacting the steam turbine.
As shown in FIG. 1, the specific circulation working mode of the water medium energy storage and power generation steam supply system of the utility model includes at least five working modes, which are respectively the heat collection direct steam working mode, heat collection simultaneous steam supply and heat storage working mode, heat collection only heat storage working mode, heat storage steam supply working mode and heat collection and heat storage simultaneous steam supply mode.
Heat collection direct steam working mode: when the solar illumination heat is only needed by the steam of the user end, the fourth valve 641, the tenth valve 642, the fifth valve 65, the sixth valve 661 and the eleventh valve 662 are closed, and other valves are all opened; the first water pump 71 delivers enough pure water to the low-temperature water storage device 2 through the purification water replenishing device, and the low-temperature water in the low-temperature water storage device 5 is respectively delivered to the first heat absorber 41 and the second heat absorber 42 through the second water pump 72; the low-temperature water absorbs the solar energy gathered by the first condenser 31 and the second condenser in the first heat absorber 41 and the second heat absorber respectively to generate high-temperature high-pressure superheated steam, then the high-temperature high-pressure superheated steam enters the balance steam storage tank 9, finally the steam in the balance steam storage tank 9 stably enters the high-pressure steam turbine 10 to push the high-pressure steam turbine 10, and the high-pressure steam turbine 10 drives the generator 11 to generate electricity. Meanwhile, the high-temperature and high-pressure steam which is subjected to primary work is changed into medium-temperature steam which is communicated with a steam supply channel B and is supplied to a steam demand end. In the process, the first flow control valve 81 and the second flow control valve 82 control the amount of the inlet water according to the temperature and pressure signals of the first sensor 51 and the second sensor 52, so that the first heat absorber 41 and the second heat absorber 42 output superheated water vapor with high temperature and high pressure.
The heat collection and simultaneous steam supply and heat storage working modes are as follows: when the sun is strong and the steam demand of the steam user is not used, the fourth valve 641, the eleventh valve 662 and the seventh valve 67 are closed, and the other valves are opened. The high-temperature and high-pressure water storage 15 group of the heat storage unit intensively places the residual medium-temperature water in the high-temperature and high-pressure water storage 15 into several groups of high-temperature and high-pressure water storage 15 through internal regulation, and vacates several groups of high-temperature and high-pressure water storage 15. The high-temperature high-pressure superheated steam output by the first heat absorber 41 is used for power generation and steam supply, and the high-temperature high-pressure superheated steam output by the second heat absorber 42 is used for heat storage. When in work: the first water pump 71 delivers enough pure water to the low-temperature water storage device 2 through the purification water replenishing device, and the low-temperature water in the low-temperature water storage device 5 is respectively delivered to the first heat absorber 41 and the second heat absorber 42 through the second water pump 72; the low-temperature water absorbs the solar energy collected from the first condenser 31 and the second condenser in the first heat absorber 41 and the second heat absorber, respectively, to generate high-temperature and high-pressure superheated steam. The high-temperature high-pressure superheated steam output by the first heat absorber 41 enters the balance steam storage tank 9, and finally the steam in the balance steam storage tank 9 stably enters the high-pressure turbine 10 to push the high-pressure turbine 10, and the high-pressure turbine 10 drives the generator 11 to generate power. Meanwhile, the high-temperature and high-pressure steam which is subjected to primary work is changed into medium-temperature steam which is communicated with a steam supply channel B and is supplied to a steam demand end. The high-temperature high-pressure superheated steam output by the second heat absorber 42 enters the heat transfer coil of the high-temperature heat storage device 17 through the sixth valve 661 to heat the high-temperature heat storage medium, the high-temperature high-pressure superheated steam is changed into high-temperature high-pressure saturated water, and then the high-temperature high-pressure saturated water enters the high-temperature high-pressure water storage 15 from the bottom of the empty high-temperature high-pressure water storage 15 to complete the heat storage cycle. Meanwhile, the medium temperature water in the high temperature and high pressure water storage 15 with the medium temperature water is sent to the first heat absorber 41 or the second heat absorber 42 through the third water pump 73 for recycling heating. In the process, the first flow control valve 81 and the second flow control valve 82 control the amount of the fed water according to the temperature and pressure signals of the first sensor 51 and the second sensor 52, so that the first heat absorber 41 and the second heat absorber 42 output the superheated water vapor with high temperature and high pressure.
Heat collection and heat storage mode: when sunlight exists and the steam user end does not need steam, the first valve 61, the second valve 62, the fifth valve 65, the sixth valve 661, the seventh valve 67 and the tenth valve 642 are opened, and other valves are closed; the high-temperature and high-pressure water storage 15 group of the heat storage unit intensively places the residual medium-temperature water in the high-temperature and high-pressure water storage 15 into several groups of high-temperature and high-pressure water storage 15 through internal regulation, and vacates several groups of high-temperature and high-pressure water storage 15. The high-temperature high-pressure superheated steam output by the first heat absorber 41 and the second heat absorber 42 directly enters the heat transfer coil of the high-temperature heat storage device 17 to heat the high-temperature heat storage medium, the high-temperature high-pressure superheated steam is changed into high-temperature high-pressure saturated water, and then the high-temperature high-pressure saturated water enters the high-temperature high-pressure water storage 15 from the bottom of the empty high-temperature high-pressure water storage 15 to complete the heat storage cycle. Meanwhile, the medium temperature water in the high temperature and high pressure water storage 15 with the medium temperature water is sent to the first heat absorber 41 or the second heat absorber 42 through the third water pump 73 for recycling heating.
The heat storage and steam supply working mode is as follows: in the case of insufficient solar light at night, in rainy days, etc., the fourth valve 641 and the eleventh valve 662 are opened, and the remaining valves are closed; the saturated water stored in the high-temperature and high-pressure water storage 15 with high temperature and high pressure is decompressed by the fourth valve 641 to partially saturate water into saturated steam, the saturated steam enters the heat transfer coil of the high-temperature heat storage device 17, the heat stored in the high-temperature heat storage medium is absorbed by the high-temperature heat storage device 17 and is changed into superheated steam with high temperature and high heat, then the superheated steam with high temperature and high heat enters the balance steam storage tank 9, the steam in the balance steam storage tank 9 stably enters the high-pressure turbine 10 to expand and push the high-pressure turbine 10, and the high-pressure turbine 10 drives the generator 11 to generate electricity. Meanwhile, high-temperature and high-pressure steam which is subjected to primary work is changed into medium-temperature steam which is provided to a steam demand end through a steam supply channel B, and a heat storage steam supply working mode is completed.
Heat collection and heat storage simultaneous steam supply mode: when the sun shines and the steam cannot meet the requirements of users, the fifth valve 65, the sixth valve 661 and the tenth valve are closed, and other valves are opened; the first heat absorber 41 and the second heat absorber absorb the solar energy gathered by the first condenser 31 and the second condenser to generate high-temperature high-pressure superheated steam, and then the high-temperature high-pressure superheated steam enters the balance steam storage tank 9; meanwhile, the saturated water stored in the high-temperature and high-pressure water storage 15 with high temperature and high pressure is decompressed by the fourth valve 641 to be partially saturated water into saturated steam, and the saturated steam enters the heat transfer coil of the high-temperature heat storage device 17, absorbs the heat stored in the high-temperature heat storage medium in the high-temperature heat storage device 17 and is changed into superheated steam with high temperature and high heat, and then the superheated steam with high temperature and high heat also enters the balance steam storage tank 9; then the steam in the balance steam storage tank 9 stably enters the high pressure turbine 10, expands and pushes the high pressure turbine 10, and the high pressure turbine 10 drives the generator 11 to generate electricity. Meanwhile, the high-temperature and high-pressure water vapor which performs the primary work is changed into the medium-temperature water vapor which is communicated with the steam supply channel B and is supplied to a steam demand end.
Referring to fig. 2, compared with the system shown in fig. 1, the system further includes a medium/low pressure turbine 10 set, a condenser 12, a condensate storage 13, a vacuum pump 14, a cooling tower 16, and a fourth water pump 74.
As shown in fig. 2, the inlet of the medium and low pressure turbine 10 set is communicated with the outlet of the high pressure turbine 10; an outlet at the tail end of the middle and low pressure turbine 10 set is communicated with an inlet of a condenser 12, an outlet of the condenser 12 is communicated with an inlet of a condensate storage 13, and an outlet of the condensate storage 13 is communicated with an inlet of the low temperature water storage 2 through a fourth circulating pump 74 and an eighth valve 68 in sequence; the vacuum pump 14 is arranged on the condenser storage 13 and used for vacuumizing to prevent air from entering the negative pressure system; the cooling tower 16 stops supplying cold energy to the condenser 12 and is used for cooling the medium in the condenser; the inlet of the B steam supply channel is also provided with a ninth valve 69. The other components are mounted in the same manner as in fig. 1, and the operation method is the same.
As shown in fig. 2, when the steam supply is greater than the demand, the steam demand is controlled by the ninth valve 69, the excess steam directly enters the medium and low pressure turbine 10 set to push the medium and low pressure turbine 10 to do work, and the energy generated by the turbine 10 doing work is output in the form of electric energy by the generator 11. The water after work enters the condenser 12 and releases the residual heat through the cooling tower 12. The low-temperature water after heat release enters the condensed water storage 13 from the condenser 12 and then returns to the low-temperature water storage 2, and the next cycle is started. Meanwhile, in order to avoid air entering the whole system in the water medium circulation, the vacuum pump 14 is started to pump air of the condensed water storage 13, and the whole circulation is kept in vacuum all the time. The other components operate in the same manner as in fig. 1.
The utility model discloses aqueous medium energy storage electricity generation supplies steam system has following beneficial effect:
1. the steam supply system can continuously and stably supply steam, and integrates heat production, heat storage, heat supply and power generation;
2. the industrial steam requirements in rainy days and at night can be met on the premise of building a gas boiler without investment, the existing pollution-emission gas, fuel oil or coal-fired boiler can be replaced, and the national important strategies of carbon peak reaching and carbon neutralization are easily realized;
3. the system directly adopts water as the heat storage medium and then directly uses the water as the steam turbine to do work and supply steam, thereby avoiding energy loss caused by heat exchange between molten salt or heat transfer oil as the heat storage medium and the working medium and improving the heat utilization efficiency;
4. the design of the high-temperature heat storage device enables saturated water from the high-temperature high-pressure water storage 15 to be heated by a high-temperature heat storage medium in the high-temperature heat storage device to become high-efficiency superheated steam to do work, so that the work doing efficiency of a steam turbine is improved;
5. the superheated steam is used for once power generation before the steam is supplied, the pressure of saturated steam is reduced, so that the steam pressure requirement of a steam demand end is met, the solar energy is utilized to the maximum extent, and the heat utilization efficiency is improved;
6. can adjust working method along with the steam demand, supply steam efficiency according to with steam optimization regulation, combine and replace multiple mode, improve the productivity utilization ratio.
It should be noted that, in the above embodiments of the present application, the description of each embodiment has a respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. The utility model provides an aqueous medium energy storage electricity generation supplies steam system which characterized in that: the system comprises a heat collecting and heating water medium unit, a power generation and steam supply unit and a heat storage unit;
the heat collecting and heating water medium unit comprises a low-temperature water storage device, a first heat absorber and a second heat absorber which are connected in parallel; the outlet of the low-pressure water storage device is respectively communicated with the inlets of the first heat absorber and the second heat absorber;
the power generation steam supply unit comprises a port B for communicating a steam channel, a steam turbine and a generator; the high-pressure turbine is electrically connected with the generator; an inlet of the high-pressure turbine is respectively communicated with outlets of the first heat absorber and the second heat absorber; the outlet of the high-pressure turbine is communicated with a steam supply channel B;
the heat storage unit consists of a high-temperature heat storage device and a plurality of high-temperature and high-pressure water storages; a high-temperature heat storage medium and a heat transfer coil pipe uniformly distributed in the high-temperature heat storage medium are arranged in the high-temperature heat storage device, and steam flows through the coil pipe to realize heat exchange between the steam and the high-temperature heat storage medium; one end of the coil pipe in the high-temperature heat storage device is respectively communicated with an inlet of the high-pressure turbine and outlets of the first heat absorber and the second heat absorber; the other end of the coil pipe in the high-temperature heat storage device is respectively communicated with a bottom inlet of the high-temperature and high-pressure water storage and a top outlet of the high-temperature and high-pressure water storage; the other outlet of the high-temperature and high-pressure water storage is communicated with the outlet of the low-temperature water storage device.
2. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the high-temperature heat storage medium in the high-temperature heat storage device is one of molten salt, granular or powdery solid and liquid-solid mixed medium.
3. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the heat transfer coil pipes are uniformly distributed in the high-temperature heat storage medium in the high-temperature heat storage device, and fins can be added outside the coil pipes to enhance heat transfer.
4. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the balance heat storage device comprises a high-temperature heat storage device, a first heat absorber and a second heat absorber, and is characterized by further comprising a balance steam storage tank, wherein an inlet of the balance steam storage tank is respectively communicated with outlets of the coil pipe, the first heat absorber and the second heat absorber in the high-temperature heat storage device; and the outlet of the balance steam storage tank is communicated with the inlet of the high-pressure steam turbine.
5. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the inlet of the low-temperature water storage device is provided with a purification water replenishing device which supplies purified water after treatment to the low-temperature water storage device; a first water pump and a first valve are connected between the purification water replenishing device and the low-temperature water storage device; and the outlet of the low-temperature water storage device is connected with a second water pump and a second valve in sequence.
6. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the system also comprises a first tracking condenser and a second tracking condenser; the first and second tracking condensers provide concentrated solar heat to the first and second heat sinks, respectively.
7. The aqueous medium energy storage, power generation and steam supply system according to claim 5, wherein: a first flow control valve and a second flow control valve are respectively connected between the second valve and the first heat absorber and between the second valve and the second heat absorber; the outlets of the first heat absorber and the second heat absorber are respectively provided with a first sensor and a second sensor; a third valve is arranged between the first sensor and the inlet of the balance steam storage tank; a sixth valve is arranged between the second sensor and the heat transfer coil of the high-temperature heat storage device; an eleventh valve is arranged between the heat transfer coil of the high-temperature heat storage device and the inlet of the balance steam storage tank.
8. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: a tenth valve is arranged at the bottom inlet of the high-temperature and high-pressure water storage device and the heat transfer coil of the high-temperature heat storage device; a fourth valve is arranged between the outlet at the top end of the high-temperature and high-pressure water storage device and the heat transfer coil of the high-temperature heat storage device; a third water pump and a fifth valve are sequentially connected between the other outlet of the high-temperature and high-pressure water storage and the second flow control valve; and a third sensor is arranged on the high-temperature and high-pressure water storage device.
9. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the high-temperature and high-pressure water storage is made of steel metal materials, and is resistant to pressure of more than 25MPa and high temperature of more than 370 ℃.
10. The aqueous medium energy storage, power generation and steam supply system according to claim 1, wherein: the system also comprises a medium-low pressure steam turbine set, a condenser, a condensate water storage and a fourth water pump; the inlet of the medium-low pressure turbine set is communicated with the outlet of the high pressure turbine; the tail end outlet of the middle-low pressure steam turbine unit is communicated with the inlet of the condenser, the outlet of the condenser is communicated with the inlet of the condensed water storage device, and the outlet of the condensed water storage device is communicated with the inlet of the low-temperature water storage device through a fourth circulating pump; a vacuum pump for vacuumizing is also arranged at the condenser storage; a cooling tower for stopping cooling capacity supply for the condenser is arranged outside the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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