CN114811972A - Water medium heat storage power generation steam supply system - Google Patents

Water medium heat storage power generation steam supply system Download PDF

Info

Publication number
CN114811972A
CN114811972A CN202210538647.4A CN202210538647A CN114811972A CN 114811972 A CN114811972 A CN 114811972A CN 202210538647 A CN202210538647 A CN 202210538647A CN 114811972 A CN114811972 A CN 114811972A
Authority
CN
China
Prior art keywords
heat
steam
temperature
water storage
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210538647.4A
Other languages
Chinese (zh)
Inventor
祝长宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Zhongre Information Technology Co ltd
Original Assignee
Beijing Zhongre Information Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Zhongre Information Technology Co ltd filed Critical Beijing Zhongre Information Technology Co ltd
Priority to CN202210538647.4A priority Critical patent/CN114811972A/en
Publication of CN114811972A publication Critical patent/CN114811972A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/003—Plants characterised by condensers arranged or modified to co-operate with the engines condenser cooling circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F24S2020/23—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants movable or adjustable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The utility model provides an aqueous medium heat-retaining 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 plurality of high-temperature and high-pressure water storages; the water medium heat 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 boiler can meet the industrial steam requirements in rainy days and at night on the premise of not investing in building the gas boiler, and can replace the existing gas, fuel oil or coal-fired boiler with pollution emission.

Description

Water medium heat storage power generation steam supply system
Technical Field
The invention relates to the technical field of new energy, in particular to an aqueous medium heat storage power generation steam supply 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. Solar energy is used 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 and relieve energy crisis by developing and utilizing the solar energy, 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
Aiming at the defects of the prior art, the invention provides an aqueous medium heat storage power generation steam supply system to solve one or more technical problems.
In order to realize the technical scheme, the invention provides an aqueous medium heat storage power generation steam supply system which comprises a heat collection and heating aqueous medium unit, a heat storage unit and a power generation 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 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 plurality of high-temperature and high-pressure water storages; outlets of the first heat absorber and the second heat absorber are communicated with a bottom inlet of the high-temperature and high-pressure water storage; the top outlet of the high-temperature and high-pressure water storage is communicated with the inlet of the high-pressure turbine; the other outlet of the high-temperature and high-pressure water storage is communicated with the outlet of the low-temperature water storage device.
The system further comprises a balance steam storage tank, and an inlet of the balance steam storage tank is respectively communicated with outlets of the first heat absorber and the second heat absorber; 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 installed at the inlet of the low-temperature water storage device and supplies purified water after treatment to the low-temperature water storage device.
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 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.
Furthermore, 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; and the outlets of the first heat absorber and the second heat absorber are both provided with a first sensor and a second sensor.
Further, a sixth valve is arranged at an inlet at the bottom end of the high-temperature and high-pressure water storage; 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; a third sensor is arranged on the high-temperature high-pressure water storage heat reservoir; and a fourth valve is arranged at an outlet at the top end of the high-temperature high-pressure water storage heat reservoir.
Furthermore, the high-temperature high-pressure water storage heat reservoir is made of metal materials such as steel, 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; 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.
Furthermore, 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 invention has the following advantages: the water medium heat 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 not investing in building a gas boiler, and the existing pollution-discharge gas, fuel oil or coal-fired boiler can be replaced; meanwhile, the system directly adopts water as a heat storage medium and then is directly used for acting and steam supply of the steam turbine, so that energy loss caused by heat exchange between molten salt or heat conducting oil serving as the heat storage medium and a working medium is avoided, and heat utilization efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of an aqueous medium heat storage power generation steam supply system of the present invention.
FIG. 2 is a schematic diagram of an optimized structure of the water medium heat storage power generation steam supply system.
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; 64. a fourth valve; 65. a fifth valve; 66. a sixth valve; 67. a seventh valve; 68. an eighth valve; 69. the ninth invention; 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. and (5) cooling the tower.
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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Referring to fig. 1, the water medium heat storage power generation steam supply system of the present invention includes a heat collecting and heating water medium unit, a heat storage unit and a power generation 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 31, a second tracking condenser 32, a first heat absorber 41 and a second heat absorber 42 which are connected in parallel; the outlet of the purification 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 and second tracking condensers 31 and 32 supply the first and second heat sinks 41 and 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; an outlet of the high-pressure turbine 10 is communicated with a steam supply channel B; the heat storage unit is composed of a plurality of high-temperature and high-pressure water storages 15; the outlets of the first heat absorber 41 and the second heat absorber 42 are communicated with the inlet at the bottom end of the high-temperature and high-pressure water storage 15; the top outlet of the high-temperature and high-pressure water storage 15 is communicated with the inlet of the balance steam storage tank 9; 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.
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 sixth valve 66 is arranged at the inlet at the bottom end of the high-temperature and high-pressure water storage 15; 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 high-pressure water storage and heat storage device 15 is provided with a third sensor 53 for detecting the pressure, the water level and the steam temperature in the high-temperature high-pressure water storage and heat storage device 15; a fourth valve 64 is arranged at the outlet of the top end of the high-temperature high-pressure water storage heat reservoir 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 high-pressure water storage heat reservoir is made of metal materials such as steel, and is resistant to pressure of more than 25MPa and 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 cycle operation modes of the water medium heat storage power generation steam supply system at least include five operation modes, namely, a heat collection direct steam operation mode, a heat collection simultaneous steam supply and heat storage operation mode, a heat collection only heat storage operation mode, a heat storage steam supply operation mode and a heat collection and heat storage simultaneous steam supply mode.
Heat collection direct steam working mode: when the solar illumination heat is only required by steam of the user side, the fourth valve 64 and the sixth valve 66 are closed, and other valves are 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 sunlight is strong and the steam demand of the steam user end is incomplete, the fourth valve 64 and the seventh valve 67 are closed, and other valves are opened; the high-temperature high-pressure water storage and heat storage devices 15 of the heat storage unit are internally adjusted, so that residual medium-temperature water in the high-temperature high-pressure water storage and heat storage devices 15 is intensively placed in the high-temperature high-pressure water storage and heat storage devices 15, and the high-temperature high-pressure water storage and heat storage devices 15 are emptied; the high-temperature and high-pressure superheated steam output by the first heat absorber 41 is used for generating power and supplying steam to a working circulation mode; according to the feedback of the second sensor 52, the second flow control valve 82 controls the flow rate of the water in the second heat absorber 42, the water in the second heat absorber 42 absorbs the heat collected by the second condenser lens 32 and becomes high-temperature and high-pressure saturated water, and the high-temperature and high-pressure saturated water enters the high-temperature and high-pressure water storage heat reservoir 15 from the bottom of the empty high-temperature and high-pressure water storage heat reservoir 15, so that the heat storage cycle is completed. Meanwhile, the medium-temperature water in the high-temperature high-pressure water storage and heat storage device 15 filled with the medium-temperature water in a centralized manner is sent to the first heat absorber 41 or the second heat absorber 42 through the third water pump 73 for recycling and heating. In the process, the first flow control valve 81 and the second flow control valve 82 control the amount of the intake 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 is superheated steam with high temperature and high pressure, and the second heat absorber 42 outputs saturated water with high temperature and high pressure.
Heat collection and heat storage mode: when the sunlight exists and the steam user end does not need steam, the third valve 63 and the fourth valve 64 are closed, and other valves are opened; the high-temperature high-pressure water storage and heat storage devices 15 of the heat storage unit are internally adjusted, so that residual medium-temperature water in the high-temperature high-pressure water storage and heat storage devices 15 is intensively placed in the high-temperature high-pressure water storage and heat storage devices 15, and the high-temperature high-pressure water storage and heat storage devices 15 are emptied; according to the feedback of the first sensor 51 and the second sensor 52, the first flow control valve 81 and the second flow control valve 82 respectively control the flow rate of water in the first heat absorber 41 and the second heat absorber, so that the water in the first heat absorber 41 and the second heat absorber 42 is changed into high-temperature high-pressure saturated water by absorbing heat collected by corresponding collecting mirrors, and the high-temperature high-pressure saturated water enters the high-temperature high-pressure water storage heat reservoir 15 from the bottom of the empty high-temperature high-pressure water storage heat reservoir 15, thereby completing the heat storage working mode. Meanwhile, the medium temperature water in the high temperature and high pressure water storage and heat storage 15 with the medium temperature water is sent to the first heat absorber 41 and the second heat absorber 42 by the third water pump 73 for recycling.
The heat storage and steam supply working mode is as follows: in the case of insufficient sun light at night, rainy day and the like, the fourth valve 64 is opened, and the other valves are closed; the high-temperature high-pressure saturated water stored in the high-temperature high-pressure water storage heat reservoir 15 is decompressed by the fourth valve 64 to be partially saturated and hydrated into saturated steam, the saturated steam 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 sunlight irradiates and the steam user end can not meet the steam demand, the fifth valve 65 and the sixth valve 66 are closed, and other valves are opened; the first heat absorber 41 and the second heat absorber absorb the solar energy collected 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 high-temperature and high-pressure saturated water stored in the high-temperature and high-pressure water storage and heat reservoir 15 is decompressed by the fourth valve 64 to be partially saturated and hydrated into saturated steam, and the saturated steam 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 to push 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 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.
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 middle and low pressure turbine 10 set to drive the middle and low pressure turbine 10 to work, and the energy generated by the work of the turbine 10 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 water medium heat storage power generation steam supply system has the following beneficial effects:
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 not investing in building a gas boiler, and the existing pollution-discharge gas, fuel oil or coal-fired boiler can be replaced;
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 supersaturated steam is used for once power generation before the steam is supplied, the pressure of the saturated steam is reduced to meet the steam pressure requirement of a steam demand end, so that the solar energy is utilized to the maximum extent, and the heat utilization efficiency is improved;
5. can adjust working method along with the steam demand, supply steam efficiency according to optimizing with steam and adjusting, combine multiple mode and replace, 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 heat-retaining 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 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 plurality of high-temperature and high-pressure water storages; outlets of the first heat absorber and the second heat absorber are communicated with a bottom inlet of the high-temperature and high-pressure water storage; the top outlet of the high-temperature and high-pressure water storage is communicated with the inlet of the high-pressure turbine; 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 system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: the balance heat absorber is characterized by also comprising a balance steam storage tank, wherein an inlet of the balance steam storage tank is respectively communicated with outlets of the first heat absorber and the second heat absorber; and the outlet of the balance steam storage tank is communicated with the inlet of the high-pressure steam turbine.
3. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: and the inlet of the low-temperature water storage device is provided with a purification water replenishing device which supplies the low-temperature water storage device with purified water after treatment.
4. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: the system also comprises a first tracking condenser and a second tracking condenser; the first and second tracking concentrators provide concentrated solar heat to the first and second heat absorbers, respectively.
5. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: 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.
6. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: 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; and the outlets of the first heat absorber and the second heat absorber are both provided with a first sensor and a second sensor.
7. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: a sixth valve is arranged at the inlet at the bottom end of the high-temperature and high-pressure water storage; 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; a third sensor is arranged on the high-temperature high-pressure water storage heat reservoir; and a fourth valve is arranged at an outlet at the top end of the high-temperature high-pressure water storage heat reservoir.
8. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: the high-temperature high-pressure water storage heat reservoir is made of metal materials such as steel, and is resistant to pressure of more than 25MPa and high temperature of more than 370 ℃.
9. The system of claim 1 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: 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; 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.
10. The system of claim 9 in which the aqueous medium stores heat, generates electricity and supplies steam, and further comprising: 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.
CN202210538647.4A 2022-05-18 2022-05-18 Water medium heat storage power generation steam supply system Pending CN114811972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210538647.4A CN114811972A (en) 2022-05-18 2022-05-18 Water medium heat storage power generation steam supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210538647.4A CN114811972A (en) 2022-05-18 2022-05-18 Water medium heat storage power generation steam supply system

Publications (1)

Publication Number Publication Date
CN114811972A true CN114811972A (en) 2022-07-29

Family

ID=82515079

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210538647.4A Pending CN114811972A (en) 2022-05-18 2022-05-18 Water medium heat storage power generation steam supply system

Country Status (1)

Country Link
CN (1) CN114811972A (en)

Similar Documents

Publication Publication Date Title
AU2015245828B2 (en) Solar thermal and BIGCC-integrated hybrid power generation system
WO2015154585A1 (en) Optimized integrated system for solar-biomass hybrid electricity generation
CN110748465B (en) Hydrogen energy storage solar energy coal-fired coupling flexible power generation system and operation method
CN110863870B (en) Inclined temperature layer heat storage peak regulation system and peak regulation method based on high-pressure heating loop
CN106523053B (en) Solar heat and steam power plant's coupled electricity-generation and hot energy storage combined system and implementation method
CN102345576A (en) High-efficiency solar photo-thermal tower-type electricity generation and seawater desalinization integral system
CN113819659B (en) Thermal power generating unit peak regulation system and method for solar-assisted heating of condensed water
CN101846044A (en) Solar heat collection, energy storage and back heating system applied to thermal generator set
CN110761859B (en) Inclined temperature layer heat storage peak regulation system and peak regulation method based on low-pressure heating loop
CN110711463A (en) Gas power plant CO based on solar energy and LNG cold energy2Trapping system
CN201637131U (en) Solar heat collection and energy storage regenerative heating device for thermal generator set
CN112963212A (en) Low-carbon energy utilization system for oil field steam-electricity cogeneration
CN202170852U (en) High-efficiency solar thermal tower type electric power generation and seawater desalination integrated system
CN101788141B (en) Application of absorption type heat regenerator in regenerative circulation system of power plant
CN217844331U (en) Water medium heat storage power generation steam supply system
CN217843807U (en) Aqueous medium energy storage power generation steam supply system
CN206309434U (en) Solar heat and steam power plant's coupled electricity-generation and hot energy storage combined system
CN215256355U (en) Low-carbon energy utilization system for oil field steam-electricity cogeneration
CN114811972A (en) Water medium heat storage power generation steam supply system
CN211823547U (en) Rubber drying device based on light-gathering solar energy
CN115183210A (en) Aqueous medium energy storage power generation steam supply system
CN219433368U (en) Gas-steam combined cycle exhaust steam heating system
CN217270640U (en) Photo-thermal enhanced organic Rankine cycle geothermal power generation system
CN219605363U (en) System for generating power by using waste heat of process waste hot water
CN108061009A (en) A kind of energy conversion recycle device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication