An energy storage peak shaving system suitable for heating molten salt by steam in reheating units
A steam and molten salt technology, applied in steam generation, feedwater heaters, lighting and heating equipment, etc., can solve problems such as the low limit load of boiler operation and the mismatch of low limit load of steam turbine operation, so as to improve safety and improve the quality of life. Hot steam flow, avoid over temperature effect
Active Publication Date: 2022-01-07
HANGZHOU BOILER GRP CO LTD
View PDF12 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0013] In order to solve the above-mentioned technical problems, the present invention designs an energy storage peak-shaving system suitable for steam heating of molten salt in reheating units, so as to solve the problem of mismatch between the lower limit load of boiler operation and the lower limit load of steam turbine operation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0031] Example: as attached figure 1 As shown, an energy storage peak shaving system suitable for heating molten salt by steam in a reheating unit includes a superheater 1, a reheater 2, a steam turbine high-pressure cylinder 3, a steam-molten salt heat exchanger 4, a cold salt tank 5, Hot salt tank 6, molten salt pump 7, steam turbine medium pressure cylinder 8, high pressure condensate water heater 9, pressure reducing valve 10, separator 11, steam jet pump 12, booster pump 13.
[0032] When the reheat unit is performing low-load peak regulation, part of the steam generated by the boiler superheater 1 enters the steam turbine high-pressure cylinder 3 to do work, and the rest enters the steam-molten salt heat exchanger 4 to transfer heat to the molten salt. The molten salt pump 7 extracts the molten salt with lower temperature from the cold salt tank 5 , absorbs heat in the steam-molten salt heat exchanger 4 , and turns into higher temperature molten salt and stores it in the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an energy storage peak regulation system suitable for steam heating molten salt of a reheating unit, comprising a superheater, a reheater, a steam turbine high-pressure cylinder, a steam-molten salt heat exchanger, a steam turbine medium-pressure cylinder, and high-pressure condensed water Heaters, pressure reducing valves, separators, steam injection pumps and booster pumps. The invention can decouple the output power of the boiler from the generating power of the steam turbine unit, so that the boiler can operate within a safe load range, and at the same time maintain the lower output power of the steam turbine generator set to meet the requirements of the power grid for the peak-shaving capacity of the unit. requirements; at the same time, the organic combination of the high-pressure steam process and the medium-pressure steam process of the reheat unit is realized, the flow rate of the reheat steam is increased, and the overheating of the reheater is avoided, thereby improving the safety of the boiler in the low-load peak-shaving stage.
Description
technical field [0001] The invention relates to the fields of power station energy storage peak regulation, industrial heating, etc., and in particular relates to an energy storage peak regulation system suitable for reheating unit steam heating molten salt. Background technique [0002] In recent years, with the rapid decline in the cost of photovoltaic and wind power, the installed capacity of renewable energy in my country has grown rapidly. By the end of 2020, the installed capacity of photovoltaic and wind power in my country accounted for more than 24% of all installed capacity. However, the output of photovoltaic and wind power changes rapidly with resource fluctuations, which will bring difficulties to the consumption of the power grid. This contradiction becomes more prominent when the proportion of renewable energy gradually increases. [0003] Thermal power units account for about 53.5% of my country's total installed capacity, and about 64% of power generation ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F22D1/32F22D11/06F28D20/00F01D15/10F01D25/24
CPCF22D1/32F22D11/06F28D20/0034F01D15/10F01D25/24F28D2020/0047Y02E60/14Y02E70/30
Inventor 姚飞奇刘可亮黄晨涛赫明春袁雨锋
Owner HANGZHOU BOILER GRP CO LTD