CN215863317U - System for supplying steam by coupling combustion engine with solid heat storage - Google Patents
System for supplying steam by coupling combustion engine with solid heat storage Download PDFInfo
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- CN215863317U CN215863317U CN202122211515.4U CN202122211515U CN215863317U CN 215863317 U CN215863317 U CN 215863317U CN 202122211515 U CN202122211515 U CN 202122211515U CN 215863317 U CN215863317 U CN 215863317U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/14—Thermal energy storage
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Abstract
The utility model discloses a gas turbine coupled solid heat storage and steam supply system, which comprises a gas-steam combined cycle unit, a solid heat storage boiler, a heat source supply module, an industrial steam pipeline and a water supply pipeline, wherein the gas-steam combined cycle unit is connected with the solid heat storage boiler; one end of the heat source supply module is connected with a high-temperature flue gas pipeline and/or a high-temperature steam pipeline of the gas-steam combined cycle unit, and the other end of the heat source supply module is connected with a solid heat accumulator in the solid heat accumulation boiler; the water supply pipeline is connected with the water supply side of the solid thermal storage boiler; the industrial steam pipeline is connected with the steam generation side of the solid heat storage boiler. The supply capacity of the external industrial steam can be increased. The steam of the gas cogeneration unit is fully utilized.
Description
Technical Field
The utility model belongs to the field of gas turbine power generation, and particularly relates to a system for coupling a gas turbine with solid heat storage and steam supply.
Background
With the rapid development of domestic natural gas distributed energy, in recent years, domestic large-scale energy companies and local energy companies have invested more and more distributed small and medium-scale gas cogeneration units, and many economically developed regions in south have built many large-scale gas cogeneration units which are built in the regions in south, so that many units are built to meet the local industrial steam demand.
However, in the off-peak electricity period at night, the social electricity consumption is greatly reduced, so that the gas turbine power plant in many areas needs to be shut down in the off-peak electricity period at night, the on-grid electricity quantity is reduced, but the industrial steam load at night is not changed, and therefore, in the off-peak electricity period at night, a plurality of gas turbine power plants have to invest in other gas boilers to meet the requirement of the industrial steam load at night, but the gas boilers not only increase the investment of the power plant, but also have high fuel cost and heat supply cost; in the daytime and the combustion engine running time, the situations that the social electricity load is not high and the combustion engine generates voltage load to run sometimes exist, and at this time, the problem of industrial steam load at night can be solved at low cost by realizing thermoelectric decoupling in the daytime and under the condition that the combustion engine is stopped at night. In addition, in the starting process of the gas turbine and steam combined cycle unit, the steam turbine needs to start steam every morning, and the existing gas turbine starting steam boiler is a gas or oil boiler and also has the problems of high fuel cost and pollution.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas turbine coupled solid heat storage and steam supply system to solve the problem that a gas boiler is additionally invested to meet industrial steam load at night in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a gas turbine coupled solid heat storage and steam supply system comprises a gas and steam combined cycle unit, a solid heat storage boiler, a heat source supply module, an industrial steam pipeline and a water supply pipeline;
one end of the heat source supply module is connected with a high-temperature flue gas pipeline and/or a high-temperature steam pipeline of the gas-steam combined cycle unit, and the other end of the heat source supply module is connected with a solid heat accumulator in the solid heat accumulation boiler;
the water supply pipeline is connected with the water supply side of the solid thermal storage boiler;
the industrial steam pipeline is connected with the steam generation side of the solid heat storage boiler.
Furthermore, the gas-steam combined cycle unit is any one of a pure gas generator unit or a gas-steam combined cycle generator unit.
Further, an industrial steam pipeline of the solid heat storage boiler is connected with an external industrial steam pipeline or connected with a starting stage steam turbine of the gas-steam combined cycle generator set.
Furthermore, an industrial steam pipeline of the solid thermal storage boiler is connected with any one or more of a waste heat boiler, a deaerator, a steam-driven feed water pump, a steam turbine shaft seal and a steam turbine cylinder warming system.
Furthermore, the heat source supply module is connected with a main steam pipeline of a waste heat boiler of the gas-steam combined cycle unit or a steam extraction pipeline of the steam turbine.
Furthermore, an industrial steam pipeline of the solid heat storage boiler is connected to a steam-water circulation system of the gas-steam combined cycle unit.
Further, an industrial steam pipeline of the solid heat storage boiler is connected to a heat supply network heat exchanger.
Further, the solid thermal storage boiler is provided with a plurality of units, and the solid thermal storage boilers of the plurality of units are connected in parallel.
The utility model has the following beneficial effects:
(1) the gas turbine coupled solid heat storage and steam supply system provided by the embodiment of the utility model replaces the existing gas, fuel oil or coal-fired boiler with pollution emission, so that the whole-process pollution emission of a gas power plant can reach the standard; the steam of the gas cogeneration unit is fully utilized.
(2) The system for supplying steam by coupling the gas turbine with the solid heat storage is combined with an external heat supply system, so that the external heat supply area can be increased, and the supply capacity of external industrial steam can be increased.
(3) The gas turbine coupled solid heat storage and steam supply system provided by the embodiment of the utility model can be used as important equipment for partial thermoelectric decoupling and gas turbine unit flexibility emergency peak regulation and frequency modulation.
(4) The system for coupling the gas turbine with the solid heat storage and steam supply provided by the embodiment of the utility model can meet the requirement of starting steam of a gas turbine steam combined cycle unit under special conditions.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a system for coupling a combustion engine with solid thermal storage and steam supply according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of the connection of the high temperature steam pipeline in the embodiment of the present invention.
Wherein: 1, a gas-steam combined cycle unit; 2, a high-temperature flue gas pipeline; 3 solid thermal storage boiler; 4, a power transmission and transformation and power supply module; 5 industrial steam pipeline; 6 water supply pipeline; 7 high-temperature steam pipeline; 8 pairs of external industrial steam pipes; 9 heat exchanger of heat network.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the utility model. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model.
As shown in fig. 1, a system for coupling a gas turbine with solid heat storage and steam supply comprises a gas-steam combined cycle unit 1, a solid heat storage boiler 3, a heat source supply module 4, an industrial steam pipeline 5 and a water supply pipeline 6;
one end of a heat source supply module 4 is connected with a high-temperature flue gas pipeline 2 and/or a high-temperature steam pipeline 7 of the gas-steam combined cycle unit 1, specifically, the high-temperature steam pipeline 7 is connected with a main steam pipeline of a waste heat boiler of the gas-steam combined cycle unit 1 or a steam extraction pipeline of a steam turbine, and under the condition of peak regulation and frequency modulation of the gas turbine, the increase or decrease of the heat storage capacity of the solid heat storage boiler is utilized to respond to the emergency peak regulation and frequency modulation requirements of the power grid on the gas turbine power plant. The other end of the heat source supply module 4 is connected to a solid heat accumulator in the solid heat accumulation boiler 3, and high-temperature flue gas or high-temperature steam generated by the gas-steam combined cycle unit 1 is sent into the solid heat accumulation boiler 3 to accumulate heat by using the solid heat accumulator. As an example, the heat source supply module 4 may be a device for adjusting the flow rate of flue gas and steam, and controlling the magnitude of the heat flow. The water supply pipeline 6 is connected with the water supply side of the solid thermal storage boiler 3; an industrial steam pipe 5 is connected to the steam generation side of the solid heat storage boiler 3. The water supply pipeline 6 and the industrial steam pipeline 5 are both provided with valves.
In one embodiment of the present invention, the solid thermal storage boiler 3 comprises a solid thermal storage body inside the boiler, a thermal storage heating assembly, an air-water heat exchanger, a circulating fan, a boiler thermal insulation shell and an internal flue gas or steam thermal storage heating assembly. As an example, a solid thermal storage boiler is an efficient and clean thermal storage boiler, and is a good substitute for a gas-fired, oil-fired, and coal-fired boiler. The solid thermal storage boiler is cleaner, the heat accumulator is solid magnesia brick, no pressure change is involved in the heating process of the heat accumulator, and the maximum thermal storage temperature is above 500 ℃. The whole system can replace a gas-oil and coal-fired boiler, can respond to a power grid peak-shaving frequency-modulation signal under special conditions, and responds to the emergency peak-shaving frequency-modulation requirement of the power grid on a gas-fired power plant through increase and decrease of the heat storage capacity of the solid heat storage boiler.
As an example, the gas-steam combined cycle power plant 1 is any one of a pure gas power plant and a gas-steam combined cycle power plant.
In one embodiment of the utility model, as shown in fig. 2, the industrial steam line 5 of the solid heat storage boiler 3 is connected to an external industrial steam line 8 or to a start-up steam turbine of the gas-steam combined cycle power plant 1. The steam generated by the solid heat storage boiler 3 can meet the requirement of the unit on external industrial steam, and can also meet the requirement on the starting steam of the steam turbine at the starting stage of the gas-steam combined cycle generator set. The steam generated by the solid thermal storage boiler 3 can also be communicated to the heat supply network heat exchanger 9, so that the steam is introduced into the heat supply network heat exchanger 9 for heat exchange for supplying heat.
In an embodiment of the present invention, a steam pipeline connected to a steam side of the solid thermal storage boiler 3 is connected to any one or more of a waste heat boiler, a deaerator, a steam-driven feed water pump, a steam turbine shaft seal, and a steam turbine cylinder warming system, and in a fully cold state, saturated or superheated steam generated by the solid thermal storage boiler 3 meets any one or more of requirements of cleaning the waste heat boiler, blowing a pipe, heating the deaerator, heating the steam-driven feed water pump, supplying steam to the outside, the steam turbine shaft seal, and steam turbine cylinder warming steam.
In an embodiment of the utility model, the industrial steam pipeline 5 of the solid heat storage boiler 3 is connected to the steam-water circulation system of the gas-steam combined cycle unit 1, and the steam generated by the solid heat storage boiler 3 is injected into the steam-water circulation system of the combined cycle unit according to the temperature and pressure thereof, or industrial steam is supplied to the outside or other steam requirements in a power plant are met.
In one embodiment of the present invention, the solid thermal storage boiler 3 is provided with a plurality of units, and the solid thermal storage boilers of the plurality of units are connected in parallel according to respective flow rates of the divided flows.
It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.
Claims (8)
1. A gas turbine coupled solid heat storage and steam supply system is characterized by comprising a gas-steam combined cycle unit (1), a solid heat storage boiler (3), a heat source supply module (4), an industrial steam pipeline (5) and a water supply pipeline (6);
one end of the heat source supply module (4) is connected with a high-temperature flue gas pipeline (2) and/or a high-temperature steam pipeline (7) of the gas-steam combined cycle unit (1), and the other end of the heat source supply module is connected with a solid heat accumulator in the solid heat accumulation boiler (3);
the water supply pipeline (6) is connected with the water supply side of the solid thermal storage boiler (3);
and the industrial steam pipeline (5) is connected with the steam generation side of the solid heat storage boiler (3).
2. The gas turbine-coupled solid heat and heat storage and steam supply system as claimed in claim 1, wherein the gas-steam combined cycle power generator set (1) is any one of a pure gas power generator set or a gas-steam combined cycle power generator set.
3. The system for coupling the combustion engine with the solid heat and heat storage and steam supply as claimed in claim 1, characterized in that the industrial steam pipeline (5) is connected with an external industrial steam pipeline (8) or is connected with a start-up phase steam turbine of the gas-steam combined cycle power generating unit (1).
4. The system for coupling a combustion engine with solid thermal storage and steam supply as claimed in claim 1, wherein the industrial steam pipeline (5) is connected with any one or more of a waste heat boiler, a deaerator, a steam feed water pump, a turbine shaft seal and a turbine cylinder warming system.
5. The gas turbine-coupled solid heat and heat storage and steam supply system as claimed in claim 1, characterized in that the heat source supply module (4) is connected with a main steam pipeline of a waste heat boiler or a steam extraction pipeline of a steam turbine of the gas-steam combined cycle unit (1).
6. The gas turbine coupled solid heat and storage energy steam supply system according to claim 1, wherein an industrial steam pipeline (5) of the solid heat and storage energy boiler (3) is connected to a steam-water circulation system of the gas-steam combined cycle unit (1).
7. The combustion engine-coupled solid thermal storage steam supply system according to claim 1, characterized in that the industrial steam pipeline (5) of the solid thermal storage boiler (3) is connected to a heat network heat exchanger (9).
8. The combustion engine-coupled solid thermal heat storage and steam supply system according to claim 1, characterized in that the solid thermal heat storage boiler (3) is provided with a plurality of units, and the solid thermal heat storage boilers (3) of the plurality of units are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122211515.4U CN215863317U (en) | 2021-09-13 | 2021-09-13 | System for supplying steam by coupling combustion engine with solid heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122211515.4U CN215863317U (en) | 2021-09-13 | 2021-09-13 | System for supplying steam by coupling combustion engine with solid heat storage |
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| CN215863317U true CN215863317U (en) | 2022-02-18 |
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| CN202122211515.4U Active CN215863317U (en) | 2021-09-13 | 2021-09-13 | System for supplying steam by coupling combustion engine with solid heat storage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961906A (en) * | 2022-06-28 | 2022-08-30 | 西安热工研究院有限公司 | System for quickly starting gas-steam combined cycle unit and operation method |
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2021
- 2021-09-13 CN CN202122211515.4U patent/CN215863317U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961906A (en) * | 2022-06-28 | 2022-08-30 | 西安热工研究院有限公司 | System for quickly starting gas-steam combined cycle unit and operation method |
| CN114961906B (en) * | 2022-06-28 | 2024-05-17 | 西安热工研究院有限公司 | System for quickly starting gas-steam combined cycle unit and operation method |
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