CN210264928U - Small-size gas formula distributed energy station of efficient - Google Patents
Small-size gas formula distributed energy station of efficient Download PDFInfo
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- CN210264928U CN210264928U CN201921148038.8U CN201921148038U CN210264928U CN 210264928 U CN210264928 U CN 210264928U CN 201921148038 U CN201921148038 U CN 201921148038U CN 210264928 U CN210264928 U CN 210264928U
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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
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- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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Abstract
The utility model discloses an efficient small-sized gas type distributed energy station, which comprises a gas turbine, a generator, a primary waste heat recovery device and an absorption refrigerating unit, wherein the gas turbine is connected with the generator, and the gas turbine is connected with a flue gas inlet of the primary waste heat recovery device through a pipeline; the waste heat primary recovery device comprises a first shell, a first heat exchange pipe communicated with the flue gas inlet is arranged in the first shell, and the flue gas outlet of the first heat exchange pipe is connected with the flue gas outlet of the first shell; and a waste heat secondary recovery device is arranged between the waste heat primary recovery device and the absorption refrigerating unit, and the heat absorbed by the waste heat secondary recovery device is used for refrigerating the absorption refrigerating unit. The heat exchange efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of the distributed energy, concretely relates to small-size gas formula distributed energy station of efficient.
Background
The distributed energy refers to an energy comprehensive utilization system distributed at a user end, mainly uses cold, heat and electricity cogeneration, and uses other energy supply systems as auxiliaries, combines electric power, heating power, refrigeration and energy storage technologies, directly meets various requirements of users, realizes gradient utilization of energy, and provides support and supplement through a public energy supply system to realize maximization of resource utilization. The distributed energy system disperses and recycles part of pollution and strives for realizing the aim of proper emission in the aspect of environmental protection; the energy sources are transported and utilized in a split arrangement mode, the loss of long-distance energy source transmission is reduced, and the safety and the flexibility of energy source utilization are effectively improved.
Distributed energy technology is an important development direction of future world energy technology. In developed countries, the proportion of distributed energy resources in the overall energy system is increasing. In China, distributed energy is one of effective ways for guaranteeing implementation of sustainable development strategies, is the requirements of energy strategic safety, electric power safety and natural gas development strategies in China, can relieve the pressure of environment and power grid peak shaving, and can improve the utilization efficiency of energy. The vigorous development of distributed energy resources becomes a part of the energy development strategy in China. The 'twelve-five' plan is clearly proposed, and the popularization and application of the distributed energy system are promoted; the thirteen-five planning schema incorporates distributed energy into a great support for the strategic emerging industry.
The existing gas type distributed energy system has the problems that the heat energy utilization link is not ideal enough, the resource waste is large, and the resource utilization efficiency is poor. To this end, the utility model CN201821373013.3 discloses a gas-type distributed energy system, which comprises a gas turbine and a generator, exhaust-heat boiler and absorption refrigeration unit, gas turbine passes through pipe connection exhaust-heat boiler's flue gas entry, exhaust-heat boiler includes the furnace body, be equipped with the first flue gas passageway with flue gas entry intercommunication in the furnace body, the inside lower extreme both sides of furnace body are equipped with second flue gas passageway relatively, through snakelike ring canal intercommunication between first flue gas passageway and the second flue gas passageway, the inside upper end of furnace body is equipped with the collection cigarette passageway, the lower extreme of collection cigarette passageway passes through pipeline intercommunication second flue gas passageway, the upper end intercommunication exhaust-heat boiler's of collection cigarette passageway exhanst gas outlet, the furnace body outer wall is equipped with annular coil, be provided with secondary waste heat recovery device between exhaust-heat boiler and the absorption refrigeration unit, the heat that secondary waste heat recovery device absorbed is used for supplying the absorption. The gas type distributed energy system has reasonable structural design and high energy utilization rate, and can realize good supply of cold, heat and electricity.
However, because the annular coil is arranged on the outer wall of the furnace body, the heat exchange between the water in the annular coil and the flue gas in the furnace body needs to be carried out through multiple stages of transmission of the annular coil, the wall of the furnace body and the serpentine ring pipe, and therefore, the problem of low heat exchange efficiency exists.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a small-size gas formula distributed energy station of efficient.
The utility model discloses the technical scheme who adopts does: a high-efficiency small-sized gas type distributed energy station comprises a gas turbine, a generator, a primary waste heat recovery device and an absorption refrigerating unit, wherein the gas turbine is connected with the generator and is connected with a flue gas inlet of the primary waste heat recovery device through a pipeline; the waste heat primary recovery device comprises a first shell, a first heat exchange pipe communicated with the flue gas inlet is arranged in the first shell, and the flue gas outlet of the first heat exchange pipe is connected with the flue gas outlet of the first shell; and a waste heat secondary recovery device is arranged between the waste heat primary recovery device and the absorption refrigerating unit, and the heat absorbed by the waste heat secondary recovery device is used for refrigerating the absorption refrigerating unit.
The gas does work and burns in the gas turbine to supply the generator to generate electricity, and the generated electric energy supplies power to the user side; flue gas generated in the gas turbine enters a first heat exchange pipe of the primary waste heat recovery device through a pipeline, a first shell in the primary waste heat recovery device is filled with water, the water in the first shell and the flue gas can directly exchange heat through the first heat exchange pipe, heat exchange efficiency is improved, and the water after absorbing heat energy can be supplied to a user for use.
The heat energy part of the smoke is absorbed after passing through the primary waste heat recovery device, but still has available heat energy, the smoke enters the secondary waste heat recovery device from the smoke outlet of the primary waste heat recovery device, the heat absorbed by the secondary waste heat recovery device can be used for refrigerating an absorption refrigerating unit, and the absorption refrigerating unit is connected with a cold supply terminal to realize good cold supply.
As a preferable scheme, the first heat exchange tubes are distributed in the first shell in a bent manner. The first heat exchange tubes are distributed in a bent shape, so that the stroke of the flue gas in the first shell and the contact area of the flue gas and water in the first shell are increased, and the heat exchange efficiency is improved; and at the bending part, the flue gas close to the pipe wall and the flue gas in the middle of the pipe are easy to be mixed in a hedging manner, so that the heat exchange between the flue gas close to the pipe wall and the flue gas in the middle of the pipe is accelerated.
As a preferred scheme, a first circulating water pipe is connected to the first shell, and a first circulating water pump is arranged on the first circulating water pipe. The arrangement of the first circulating water pipe and the first circulating water pump can enable water in the first shell to circularly flow, so that local high-low temperature water is formed when heat exchange is avoided, and the heat exchange efficiency is improved.
Preferably, the first housing is provided with a cold water inlet and a hot water outlet. External cold water enters the first shell through the cold water inlet, and hot water flows out from the hot water outlet for users to use after absorbing the heat of the smoke in the first heat exchange tube.
As a preferred scheme, the secondary waste heat recovery device comprises a second shell and a second heat exchange tube arranged in the second shell, wherein a flue gas inlet of the second heat exchange tube is connected with a flue gas outlet of the first shell, and a flue gas outlet of the second heat exchange tube extends out of the second shell. The flue gas gets into the second heat exchange tube, is full of water in the second shell, and the flue gas in the second heat exchange tube carries out the heat exchange with the water in the second shell, improves the utilization ratio to the flue gas heat.
As a preferable scheme, the second heat exchange tubes are distributed in the second shell in a bent shape. The second heat exchange tubes are distributed in a bent shape, so that the stroke of the flue gas in the second shell and the contact area of the flue gas and water in the second shell are increased, and the heat exchange efficiency is improved; and at the bending part, the flue gas close to the pipe wall and the flue gas in the middle of the pipe are easy to be mixed in a hedging manner, so that the heat exchange between the flue gas close to the pipe wall and the flue gas in the middle of the pipe is accelerated.
As a preferred scheme, the second casing is filled with circulating water, the second casing is provided with a circulating water outlet and a circulating water inlet, the circulating water outlet is communicated with the circulating water inlet through a second circulating water pipe, the second circulating water pipe is provided with a second circulating water pump, and the second circulating water pipe is partially positioned in the absorption refrigerating unit.
The utility model has the advantages that: in the utility model, the flue gas generated in the gas turbine enters the first heat exchange pipe of the primary waste heat recovery device through the pipeline, the first shell in the primary waste heat recovery device is filled with water, and the water in the first shell and the flue gas can directly exchange heat through the first heat exchange pipe, thereby improving the heat exchange efficiency; first heat exchange tube and second heat exchange tube all are the form of buckling and distribute, have increased the stroke of flue gas and the area of contact of flue gas and water, have improved heat exchange efficiency to in the department of buckling, the flue gas that is close to the pipe wall is easily the offset mixing with the flue gas in the middle of the pipe for press close to the heat exchange between pipe wall department flue gas and the middle flue gas of locating of pipe.
Drawings
Fig. 1 is a schematic diagram of a high efficiency compact gas fired distributed energy plant.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "front", "rear", "left", "right", "bottom", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present embodiments.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, a high-efficiency small-sized gas-fired distributed energy station comprises a gas turbine 2, a generator 1, a primary waste heat recovery device and an absorption refrigerating unit, wherein the gas turbine 2 is connected with the generator 1, and the gas turbine 2 is connected with a flue gas inlet 4 of the primary waste heat recovery device through a pipeline; the primary waste heat recovery device comprises a first shell 3, a first heat exchange tube 5 communicated with a flue gas inlet 4 is arranged in the first shell 3, and a flue gas outlet of the first heat exchange tube 5 is connected with a flue gas outlet 10 of the first shell; and a waste heat secondary recovery device is arranged between the waste heat primary recovery device and the absorption refrigerating unit, and the heat absorbed by the waste heat secondary recovery device is used for refrigerating the absorption refrigerating unit.
The gas does work and burns in the gas turbine 2 to supply the generator 1 to generate electricity, and the generated electric energy supplies power to the user side; flue gas generated in the gas turbine 2 enters a first heat exchange tube 5 of the primary waste heat recovery device through a pipeline, a first shell 3 in the primary waste heat recovery device is filled with water, the water in the first shell 3 and the flue gas can directly exchange heat through the first heat exchange tube 5, the heat exchange efficiency is improved, and the water after absorbing heat energy can be supplied to users for use.
The heat energy part of the smoke is absorbed after passing through the primary waste heat recovery device, but still has available heat energy, the smoke enters the secondary waste heat recovery device from the smoke outlet of the primary waste heat recovery device, the heat absorbed by the secondary waste heat recovery device can be used for refrigerating an absorption refrigerating unit, and the absorption refrigerating unit is connected with a cold supply terminal to realize good cold supply.
As a preferable scheme, the first heat exchange tubes 5 are distributed in the first housing 3 in a bent shape. The first heat exchange tubes 5 are distributed in a bent shape, so that the stroke of the flue gas in the first shell 3 and the contact area of the flue gas and water in the first shell 3 are increased, and the heat exchange efficiency is improved; and at the bending part, the flue gas close to the pipe wall and the flue gas in the middle of the pipe are easy to be mixed in a hedging manner, so that the heat exchange between the flue gas close to the pipe wall and the flue gas in the middle of the pipe is accelerated.
As a preferable scheme, a first circulating water pipe 7 is connected to the first housing 3, and a first circulating water pump 8 is arranged on the first circulating water pipe 7. The arrangement of the first circulating water pipe 7 and the first circulating water pump 8 can enable water in the first shell 3 to circularly flow, and local high-low temperature water is formed during heat exchange, so that the heat exchange efficiency is improved.
Preferably, the first housing 3 is provided with a cold water inlet 6 and a hot water outlet 9. External cold water enters the first shell 3 through the cold water inlet 6, and hot water flows out from the hot water outlet 9 for users to use after absorbing the heat of the smoke in the first heat exchange pipe 5.
Preferably, the secondary waste heat recovery device comprises a second shell 11 and a second heat exchange pipe 18 arranged in the second shell 11, a flue gas inlet 19 of the second heat exchange pipe is connected with the flue gas outlet 10 of the first shell, and a flue gas outlet 12 of the second heat exchange pipe extends out of the second shell 11. The flue gas gets into second heat exchange tube 18, is full of water in the second shell 11, and the flue gas in the second heat exchange tube 18 carries out the heat exchange with the water in the second shell 11, improves the utilization ratio to the flue gas heat.
Preferably, the second heat exchanging pipe 18 is distributed in the second housing 11 in a bent shape. The second heat exchange tubes 18 are distributed in a bent shape, so that the stroke of the flue gas in the second shell 11 and the contact area of the flue gas and water in the second shell 11 are increased, and the heat exchange efficiency is improved; and at the bending part, the flue gas close to the pipe wall and the flue gas in the middle of the pipe are easy to be mixed in a hedging manner, so that the heat exchange between the flue gas close to the pipe wall and the flue gas in the middle of the pipe is accelerated.
As a preferable scheme, the second casing 11 is filled with circulating water, the second casing 11 is provided with a circulating water outlet and a circulating water inlet, the circulating water outlet and the circulating water inlet are communicated through a second circulating water pipe 14, the second circulating water pipe 14 is provided with a second circulating water pump 16, and part of the second circulating water pipe 14 is located in the absorption type refrigerating unit 15. The second housing 11 is further provided with a water replenishing port 13 and a water draining port 17, the water replenishing port 13 is arranged to conveniently replenish water to the second housing 11, and the water draining port 17 is arranged to conveniently drain water to the second housing 11.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (7)
1. An efficient small-sized gas type distributed energy station is characterized in that: the system comprises a gas turbine, a generator, a primary waste heat recovery device and an absorption refrigerating unit, wherein the gas turbine is connected with the generator and is connected with a flue gas inlet of the primary waste heat recovery device through a pipeline; the waste heat primary recovery device comprises a first shell, a first heat exchange pipe communicated with the flue gas inlet is arranged in the first shell, and the flue gas outlet of the first heat exchange pipe is connected with the flue gas outlet of the first shell; and a waste heat secondary recovery device is arranged between the waste heat primary recovery device and the absorption refrigerating unit, and the heat absorbed by the waste heat secondary recovery device is used for refrigerating the absorption refrigerating unit.
2. A high efficiency compact gas fired distributed energy station as in claim 1, wherein: the first heat exchange tubes are distributed in the first shell in a bent mode.
3. A high efficiency compact gas fired distributed energy station as in claim 1, wherein: the first shell is connected with a first circulating water pipe, and a first circulating water pump is arranged on the first circulating water pipe.
4. A high efficiency compact gas fired distributed energy station as in claim 1, wherein: the first shell is provided with a cold water inlet and a hot water outlet.
5. A high efficiency compact gas fired distributed energy station as in claim 1, wherein: the waste heat secondary recovery device comprises a second shell and a second heat exchange tube arranged in the second shell, wherein a smoke inlet of the second heat exchange tube is connected with a smoke outlet of the first shell, and a smoke outlet of the second heat exchange tube extends out of the second shell.
6. A high efficiency compact gas fired distributed energy station as in claim 5, wherein: the second heat exchange tubes are distributed in the second shell in a bent mode.
7. A high efficiency compact gas fired distributed energy station as in claim 5, wherein: the second shell is filled with circulating water, a circulating water outlet and a circulating water inlet are formed in the second shell, the circulating water outlet and the circulating water inlet are communicated through a second circulating water pipe, a second circulating water pump is arranged on the second circulating water pipe, and the second circulating water pipe is partially located in the absorption type refrigerating unit.
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| CN201921148038.8U CN210264928U (en) | 2019-07-19 | 2019-07-19 | Small-size gas formula distributed energy station of efficient |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946424A (en) * | 2020-07-01 | 2020-11-17 | 中煤玮坤(北京)节能环保科技有限公司 | Distributed energy station gas engine tail gas whitening device and whitening method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946424A (en) * | 2020-07-01 | 2020-11-17 | 中煤玮坤(北京)节能环保科技有限公司 | Distributed energy station gas engine tail gas whitening device and whitening method |
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