CN217464395U - High-temperature gas heat exchange device suitable for solid heat storage - Google Patents
High-temperature gas heat exchange device suitable for solid heat storage Download PDFInfo
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- CN217464395U CN217464395U CN202220935905.8U CN202220935905U CN217464395U CN 217464395 U CN217464395 U CN 217464395U CN 202220935905 U CN202220935905 U CN 202220935905U CN 217464395 U CN217464395 U CN 217464395U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model discloses a high-temperature gas heat transfer device suitable for solid heat-retaining, include: the solid heat storage device comprises a boiler barrel, a water-cooling flue, a tail vertical shaft flue and a solid heat storage device, wherein a high-temperature gas inlet is formed in the bottom end of the water-cooling flue, the top end of the water-cooling flue is communicated with the top of the tail vertical shaft flue in a turning mode, and a low-temperature gas outlet is formed in the bottom end of the tail vertical shaft flue; the low-temperature gas outlet is communicated with the solid heat storage device through a pipeline, and the solid heat storage device is communicated with the high-temperature gas inlet through a pipeline; the water-cooling flue is internally provided with a primary water-cooling tube bundle and a superheater, the tail vertical shaft flue is internally provided with a coal economizer, the drum is arranged at the top end of the water-cooling flue and communicated with the coal economizer, the drum is sequentially communicated with a water-cooling wall of the water-cooling flue and the primary water-cooling tube bundle through a working medium heating loop, and the drum is communicated with the superheater through a steam connecting pipe. The high-efficiency heat exchange of high-temperature gas is realized, the steam can reach required parameters, and the high-efficiency heat storage peak regulation and thermoelectric decoupling of the unit are realized.
Description
Technical Field
The utility model belongs to the technical field of the heat utilization, especially, relate to a high-temperature gas heat transfer device suitable for solid heat-retaining.
Background
Along with the social and economic development, the power load is more random, and the new energy grid connection with the fluctuation characteristic puts forward higher requirements on the peak regulation capacity of the traditional power plant. The heat supply unit usually runs in a mode of 'fixing power by heat', in order to meet the heat supply requirement, the electric load adjusting range is reduced, and the peak regulation capacity of the heat supply unit is limited.
Under the situation of flexibility improvement and deep promotion of energy conservation and emission reduction of a heat supply unit, a heat energy storage technology becomes one of the most attractive heat energy utilization technologies and is widely concerned, so that the heat energy storage technology becomes a research hotspot in the world at present, and a heat storage technology becomes an important component part of thermoelectric production in a future energy system.
The heat storage technology can realize thermoelectric decoupling, and can store redundant electricity in a heat energy mode at the time of a heat supply peak in a power utilization valley and release the redundant electricity at the time of a power utilization peak; in addition, the peak regulation capacity of the unit can be improved by the heat storage technology, the efficiency is reduced when the unit operates at low load, the economic benefit is reduced, the heat storage technology is utilized, the boiler load does not need to be reduced to ultra-low load in the electricity consumption valley period, the boiler can stably operate under the economic load, the redundant electricity is stored in a heat energy mode, and the surplus electricity is released in the electricity consumption peak period.
Among the existing heat storage technologies, the solid heat storage technology is concerned by the characteristics of small occupied space and high energy density. In the solid heat storage and release system, gas is heated through the solid heat storage device, and the release of heat storage is realized through the energy conversion of the heated high-temperature gas and the power generation working medium.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art defect, provide a high-temperature gas heat transfer device suitable for solid heat-retaining, the utility model discloses the device utilizes the high-temperature gas heating feedwater that comes from solid heat storage device, through rationally arranging the heating surface, can realize high-temperature gas's high-efficient heat transfer, ensures that steam can reach the parameter that needs, realizes the high-efficient heat-retaining peak shaving and the thermoelectric decoupling zero of unit.
The purpose of the utility model is realized through the following technical scheme:
a high temperature gas heat exchange device suitable for solid heat storage, the high temperature gas heat exchange device comprising: the solid heat storage device comprises a boiler barrel, a water-cooling flue, a tail vertical shaft flue and a solid heat storage device, wherein the water-cooling flue and the tail vertical shaft flue are in a vertical flue structure, a high-temperature gas inlet is formed in the bottom end of the water-cooling flue, the top end of the water-cooling flue is turned to be communicated with the top of the tail vertical shaft flue, and a low-temperature gas outlet is formed in the bottom end of the tail vertical shaft flue; the low-temperature gas outlet is communicated with the solid heat storage device through a pipeline, and the solid heat storage device is communicated with the high-temperature gas inlet through a pipeline; be equipped with one-level water-cooling tube bank and over heater in the water-cooling flue, be equipped with the economizer in the afterbody shaft flue, the drum sets up in the top of water-cooling flue, economizer and drum intercommunication, the drum is through working medium heating circuit in proper order with water-cooling wall, the one-level water-cooling tube bank intercommunication of water-cooling flue, just the drum is through steam connecting pipe and over heater intercommunication.
According to a preferred embodiment, a secondary water-cooling tube bundle is further arranged in the tail vertical shaft flue, and the working medium heating loop of the boiler barrel is further communicated with the secondary water-cooling tube bundle.
According to a preferred embodiment, the secondary water-cooled tube bundle is disposed at the upper end of the economizer.
According to a preferred embodiment, the connection opening of the drum to the steam connection pipe is located at the top end of the drum.
According to a preferred embodiment, the superheater includes a high temperature superheater disposed close to a high temperature gas inlet and a low temperature superheater disposed downstream of the high temperature superheater; and the steam in the drum is led into the low-temperature superheater and the high-temperature superheater in sequence through the steam connecting pipe and then led out for later use.
According to a preferred embodiment, the primary water-cooled tube bundle is arranged on the downstream side of the low-temperature superheater.
According to a preferred embodiment, a fan is arranged on the pipeline between the low-temperature gas outlet and the solid heat storage device.
Aforementioned the utility model discloses main scheme and each further alternative can the independent assortment in order to form a plurality of schemes, are the utility model discloses can adopt and claim the scheme of protection. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.
The utility model has the advantages that: the utility model discloses high-temperature gas heat transfer device utilizes the high-temperature gas from solid heat-retaining device, will feed water the heating and become the superheated steam of required parameter, and heat exchange efficiency is high, and the operation is reliable and stable, can realize the thermoelectric decoupling zero and the degree of depth peak regulation of unit, has improved the flexibility of unit operation.
Drawings
FIG. 1 is a schematic view of a certain embodiment of the high-temperature gas heat exchange device of the present invention;
the system comprises a water-cooling flue 1, a tail vertical shaft flue 2, a boiler barrel 3, a high-temperature superheater 4, a low-temperature superheater 5, a primary water-cooling tube bundle 6, a secondary water-cooling tube bundle 7, an economizer 8, a high-temperature gas inlet 9, a low-temperature gas outlet 10, a solid heat storage device 11 and a fan 12.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can be implemented or applied by other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship that the utility model is usually placed when using, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable 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 in specific cases to those skilled in the art.
Additionally, the utility model discloses it is pointed out that, in the utility model, if do not write out structure, connection relation, positional relationship, power source relation etc. that concretely relates to very much, then the utility model relates to a structure, connection relation, positional relationship, power source relation etc. are technical personnel in the field on prior art's basis, can not learn through creative work.
Example 1:
referring to fig. 1, the embodiment discloses a high-temperature gas heat exchange device suitable for solid heat storage, which mainly comprises a drum 3, a water-cooling flue 1 coated by a membrane water-cooling wall, and a tail vertical shaft flue 2, wherein both flues are of a vertical flue structure, and the drum is arranged above the water-cooling flue.
The bottom of water-cooling flue 1 is equipped with high-temperature gas and enters 9, the top of water-cooling flue 1 turns to the top intercommunication with afterbody shaft flue 2, just the bottom of afterbody shaft flue 2 is equipped with low-temperature gas outlet 10.
The low-temperature gas outlet is communicated with the solid heat storage device 11 through a pipeline, and the solid heat storage device is communicated with the high-temperature gas inlet 9 through a pipeline. And a fan 12 is arranged on a pipeline between the low-temperature gas outlet and the solid heat storage device.
Be equipped with one-level water-cooling tube bank 6 and over heater in the water-cooling flue 1, be equipped with economizer 8 in the afterbody shaft flue 2, drum 3 sets up in the top of water-cooling flue 1, economizer 8 and drum 3 intercommunication, drum 3 communicates with water-cooling wall, one-level water-cooling tube bank 6 of water-cooling flue 1 in proper order through working medium heating circuit, just drum 3 communicates through steam connecting pipe and over heater.
Preferably, a secondary water-cooling tube bundle 7 is further arranged in the tail vertical shaft flue 2, and the working medium heating loop of the drum 3 is further communicated with the secondary water-cooling tube bundle 7. The secondary water-cooling tube bundle 7 is arranged at the upper end of the economizer 8. And a connecting port of the drum 3 and the steam connecting pipe is positioned at the top end of the drum 3.
Preferably, the superheater includes a high temperature superheater 4 and a low temperature superheater 5, the high temperature superheater 4 is disposed close to the high temperature gas inlet 9, and the low temperature superheater 5 is disposed downstream of the high temperature superheater 4; the steam in the drum 3 is led into the low-temperature superheater 5 and the high-temperature superheater 4 in sequence through the steam connecting pipe and then led out for standby.
Preferably, the primary water-cooled tube bundle 6 is disposed on the downstream side of the low-temperature superheater 5.
The flow of the high-temperature gas released by the solid heat storage device in the device comprises the following steps:
high-temperature gas heated by the solid heat storage device 11 enters from a high-temperature gas inlet 9 at the bottom of the water-cooling flue 1, flows upwards through a high-temperature superheater 4, a low-temperature superheater 5 and a primary water-cooling tube bundle 6 which are arranged in the water-cooling flue in sequence, releases heat on a heated surface, and then turns 180 degrees at the top to enter the tail vertical shaft flue 2.
In the tail vertical shaft flue 2, gas medium flows downwards, after heat is released to a secondary water-cooling tube bundle 7 and an economizer 8 which are arranged in the tail vertical shaft flue in sequence, low-temperature gas is led out from a low-temperature gas outlet 10 at the lower part of the vertical shaft flue, is pressurized by a fan 12 and is sent into a solid heat storage device 11 for heating circulation again. The gas for heat exchange can be air or nitrogen, etc
The working medium flow in the heat exchange device is as follows:
the feed water is firstly led to an economizer 8 inlet header in the tail vertical shaft flue 2, enters an economizer outlet header through a horizontally arranged economizer pipe group, is led to the water space in the boiler barrel 3 through an economizer leading-out pipe, and enters water cooling walls around the water cooling flue 1, an inlet header of a primary water cooling pipe bundle and an inlet header of a secondary water cooling pipe bundle through a centralized descending pipe and a lower water connecting pipe.
The boiler water is heated into a steam-water mixture in the process of flowing through the water-cooled wall, the primary water-cooled tube bundle 6 and the secondary water-cooled tube bundle 7 upwards, and the steam-water mixture is introduced into the boiler barrel 3 through the respective upper outlet header through the steam-water eduction tube for steam-water separation. The separated water enters the water space of the drum 3 again and is recycled, and the separated saturated steam is led out from a steam connecting pipe at the top of the drum 3.
After saturated steam is drawn out from drum 3, introduce the import collection case of arranging low temperature superheater 5 in water-cooling flue 1 by the saturated steam connecting pipe, the working medium cools off the back to low temperature superheater nest of tubes (also is equivalent to low temperature superheater nest of tubes and heats steam), get into the export collection case of low temperature superheater 5, draw the import collection case of high temperature superheater 4 by the connecting pipe after the desuperheating, the working medium heats the back in high temperature superheater nest of tubes, qualified superheated steam is drawn forth by being higher than export collection case.
The main steam is a parameter of medium temperature and medium pressure, in engineering application, the main steam can realize a parameter of high temperature and ultrahigh pressure at the highest, when the main steam parameter requirement is higher, a medium temperature superheater can be arranged between the high temperature superheater and the low temperature superheater, and two stages of desuperheaters are arranged on connecting pipelines between the low temperature superheater and the medium temperature superheater and between the medium temperature superheater and the high temperature superheater respectively. The arrangement of the heating surface can be properly adjusted according to the actual requirements of the main steam parameters of the project to achieve the parameters required by the project.
The embodiment is designed according to module units, one solid heat storage device corresponds to one high-temperature gas heat exchange device, and the number of the heat exchange devices is determined according to the total evaporation capacity requirement. The combined design can be adopted in engineering application, and a plurality of solid heat storage devices correspond to one high-temperature gas heat exchange device and can be optimally configured according to the actual requirements of projects.
The utility model discloses high-temperature gas heat transfer device utilizes the high-temperature gas from solid heat-retaining device, will feed water the heating and become the superheated steam of required parameter, and heat exchange efficiency is high, and the operation is reliable and stable, can realize the thermoelectric decoupling zero and the degree of depth peak regulation of unit, has improved the flexibility of unit operation.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a high temperature gas heat transfer device suitable for solid heat-retaining which characterized in that, high temperature gas heat transfer device includes: a boiler barrel (3), a water-cooling flue (1), a tail vertical shaft flue (2) and a solid heat storage device (11),
the water-cooling flue (1) and the tail vertical shaft flue (2) are of a vertical flue structure, a high-temperature gas inlet (9) is formed in the bottom end of the water-cooling flue (1), the top end of the water-cooling flue (1) is turned to be communicated with the top of the tail vertical shaft flue (2), and a low-temperature gas outlet (10) is formed in the bottom end of the tail vertical shaft flue (2);
the low-temperature gas outlet (10) is communicated with a solid heat storage device (11) through a pipeline, and the solid heat storage device (11) is communicated with the high-temperature gas inlet (9) through a pipeline;
be equipped with one-level water-cooling tube bank (6) and over heater in water-cooling flue (1), be equipped with economizer (8) in afterbody shaft flue (2), drum (3) set up in the top of water-cooling flue (1), economizer (8) and drum (3) intercommunication, drum (3) through working medium heating circuit in proper order with water-cooling wall, one-level water-cooling tube bank (6) intercommunication of water-cooling flue (1), just drum (3) are through steam connecting pipe and over heater intercommunication.
2. The high-temperature gas heat exchange device according to claim 1, wherein a secondary water-cooling tube bundle (7) is further arranged in the tail shaft flue (2), and the working medium heating loop of the drum (3) is further communicated with the secondary water-cooling tube bundle (7).
3. The high-temperature gas heat exchange device according to claim 2, characterized in that the secondary water-cooled tube bundle (7) is arranged at the upper end of the economizer (8).
4. The high-temperature gas heat exchange device according to claim 1, wherein the connection port of the drum (3) and the steam connection pipe is positioned at the top end of the drum (3).
5. The heat exchange device for high-temperature gas according to claim 4, wherein the superheater comprises a high-temperature superheater (4) and a low-temperature superheater (5), the high-temperature superheater (4) is arranged close to the high-temperature gas inlet (9), and the low-temperature superheater (5) is arranged downstream of the high-temperature superheater (4);
the steam in the boiler barrel (3) is led into the low-temperature superheater (5) and the high-temperature superheater (4) in sequence through the steam connecting pipe and then led out for standby.
6. A hot gas heat exchange device according to claim 5, characterized in that the primary water-cooled tube bundle (6) is arranged on the downstream side of the low-temperature superheater (5).
7. A high temperature gas heat exchange apparatus as claimed in claim 1, wherein a fan (12) is provided on the pipe between the low temperature gas outlet (10) and the solid heat storage means (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220935905.8U CN217464395U (en) | 2022-04-22 | 2022-04-22 | High-temperature gas heat exchange device suitable for solid heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220935905.8U CN217464395U (en) | 2022-04-22 | 2022-04-22 | High-temperature gas heat exchange device suitable for solid heat storage |
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| Publication Number | Publication Date |
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| CN217464395U true CN217464395U (en) | 2022-09-20 |
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| CN202220935905.8U Active CN217464395U (en) | 2022-04-22 | 2022-04-22 | High-temperature gas heat exchange device suitable for solid heat storage |
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