CN113008064A - Steam heat storage equipment and steam supply system - Google Patents
Steam heat storage equipment and steam supply system Download PDFInfo
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- CN113008064A CN113008064A CN202110381612.XA CN202110381612A CN113008064A CN 113008064 A CN113008064 A CN 113008064A CN 202110381612 A CN202110381612 A CN 202110381612A CN 113008064 A CN113008064 A CN 113008064A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/025—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/028—Control arrangements therefor
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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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- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The application relates to heat accumulation technical field, especially relate to a steam heat-retaining equipment and steam supply system, steam heat-retaining equipment includes: the heat storage system comprises a steam inlet interface and a steam outlet interface; the steam supply assembly is connected with the steam inlet interface and used for supplying steam to the heat storage system; the steam outlet assembly is connected with the steam outlet interface; the heat storage system is set with a heat charging process and a heat discharging process, and is used for enabling the steam supply assembly and the steam outlet assembly to be in a pressure balance state. The application provides a steam heat-retaining equipment utilizes water and phase change material's heat accumulation function, stores heat energy with the form of saturated water and carries out heat-retaining, exothermal process for whole air supply system's steam production volume, release amount can maintain the balance all the time.
Description
Technical Field
The application relates to the technical field of heat storage, in particular to steam heat storage equipment and a steam supply system.
Background
At present, a steam boiler is commonly used for providing steam and distributing the steam to be arranged at a steam end, but the existing steam supply process is difficult to maintain balance, particularly after the steam end adjusts the steam consumption, the steam end cannot correspondingly adjust the steam outlet quantity, so that the steam outlet quantity is unstable, or after the steam outlet quantity of the boiler is unstable and changes, the steam outlet condition of the steam end is greatly influenced, the steam supply and steam outlet conditions of the steam cannot be automatically adjusted, and the stability of the whole gas supply system is influenced.
Disclosure of Invention
The utility model aims to provide a steam heat-retaining equipment and steam supply system to solve the steam supply of steam supply system steam that exists among the prior art, the unable automatically regulated of play vapour process to a certain extent, influence the technical problem of whole gas supply system's stability.
The application provides a steam heat-retaining device, includes:
the heat storage system is provided with a steam inlet interface and a steam outlet interface;
the steam supply assembly is connected with the steam inlet interface and is used for supplying steam to the heat storage system;
the steam outlet assembly is connected with the steam outlet interface;
the heat storage system is set with a heat charging process and a heat discharging process, and is used for enabling the steam supply assembly and the steam outlet assembly to be in a pressure balance state.
In the above technical solution, further, the vapor heat storage device further includes a superheating apparatus, which is formed with a first inlet, a first outlet, a second inlet, and a second outlet;
the first inlet is communicated with the steam supply assembly;
the first outlet is communicated with a steam inlet of the heat storage system;
the second inlet is communicated with a steam outlet of the heat storage system;
the second outlet is communicated with the steam outlet assembly.
In any of the above technical solutions, further, the steam supply assembly includes:
a heat supply source for generating and providing steam to the thermal storage system;
the first steam dividing cylinder is provided with a first steam inlet end, a first steam outlet end and a first pressure detection valve; the first steam inlet end is connected with the heat supply source; the first steam outlet end is communicated with the first inlet;
the first automatic regulating valve is arranged on a first pipeline used for communicating the first outlet with the steam inlet interface, and the first pressure detection valve is connected with the first automatic regulating valve.
In any of the above technical solutions, further, the steam outlet assembly includes:
the second steam distributing cylinder is provided with a second steam inlet end, a second steam outlet end and a second pressure detection valve; the second steam inlet end is communicated with the second outlet;
and the second automatic regulating valve is arranged on a second pipeline for communicating the second inlet with the steam outlet port, and the second pressure detection valve is connected with the second automatic regulating valve.
In any one of the above technical solutions, further, the heat storage system includes:
the heat accumulator body is provided with the steam inlet interface and the steam outlet interface;
the steam injection pipe is arranged inside the heat accumulator body and is provided with at least one steam nozzle and at least one circulating guide cylinder;
one end of the first pipeline, which is far away from the first automatic regulating valve, penetrates through the heat accumulator body and is connected with the steam injection pipe, and the first pipeline is provided with a steam inlet valve.
In any one of the above technical solutions, further, the heat accumulator body is further provided with:
the first liquid inlet is provided with a first liquid inlet valve;
the first liquid outlet is provided with a first liquid discharge valve;
the first liquid level meter is used for measuring the liquid level height of the liquid stored in the heat accumulator body;
and the first pressure gauge is used for detecting and indicating the pressure in the heat accumulator body.
In any one of the above technical solutions, further, a steam-water separator is arranged at a steam outlet port of the heat accumulator body, one end of the second pipeline is communicated with the steam-water separator, the other end of the second pipeline is connected with the second automatic regulating valve, and the second pipeline is provided with a steam exhaust valve;
the steam-water separator is provided with a first deflation valve.
In any one of the above technical solutions, further, the heat storage system includes:
the phase-change heat storage evaporation device is provided with the steam inlet interface and the steam outlet interface; the phase-change heat-storage evaporation device is also provided with a first water inlet and a first water outlet;
the first coil is arranged in the phase-change heat-storage evaporation device, one end of the first coil penetrates through the steam inlet to be connected with the first pipeline, and the other end of the first coil is communicated with the first water outlet;
the second coil pipe is arranged in the phase-change heat-storage evaporation device, one end of the second coil pipe is communicated with the first water inlet, and the other end of the second coil pipe penetrates through the steam outlet interface to be connected with the second pipeline;
the phase-change material is arranged in the phase-change heat-storage evaporation device and coats the first coil pipe and the second coil pipe;
the drain tank is provided with a second water inlet and a second water outlet; the second water inlet is connected with the first coil pipe through a third pipeline, and the third pipeline is provided with a water inlet valve; the second water outlet is connected with the second coil pipe through a fourth pipeline, and a water supply valve is arranged on the fourth pipeline;
and the drain pump is arranged on the fourth pipeline.
In any one of the above technical solutions, further, the drain tank is provided with:
the second liquid level meter is used for detecting the water level height in the drain tank;
a second liquid inlet and a second liquid outlet; the second liquid inlet is provided with a second liquid inlet valve, and the second liquid outlet is provided with a second liquid outlet valve;
and the second pressure gauge is used for detecting and indicating the pressure in the drain tank.
The application also provides a steam supply system, including any one of the above technical schemes the steam heat storage equipment, therefore, have this steam heat storage equipment's whole beneficial technological effect, here, no longer give unnecessary details.
Compared with the prior art, the beneficial effect of this application is:
the application provides a vapor heat storage device includes: the heat storage system comprises a steam inlet interface and a steam outlet interface; the steam supply assembly is connected with the steam inlet interface and used for supplying steam to the heat storage system; the steam outlet assembly is connected with the steam outlet interface; the heat storage system is set with a heat charging process and a heat discharging process, and is used for enabling the steam supply assembly and the steam outlet assembly to be in a pressure balance state.
The application provides a steam heat-retaining device, utilizes water and phase change material's heat accumulation function, stores heat energy with the form of saturated water. When the steam consumption is less than the steam production, the steam rich in the boiler is sent into the heat storage system, the water and the steam in the heat storage system are used for carrying out mixed heat transfer to absorb the latent heat of the steam, the water is heated, the steam is condensed into water, and the melting value of the water in the heat storage system is increased to the saturated water melting value corresponding to the induced steam pressure. At this time, the water level in the heat storage system also rises due to the condensation of the steam, and thus a so-called charging process of the heat storage system is performed. When the steam consumption is suddenly increased or reduced, the steam yield is insufficient, and the user continues to use steam, the pressure in the heat storage system is reduced, the original melting value of water in the heat storage system is larger than the corresponding saturated water melting value after the pressure is reduced, so that part of water is converted into steam by flash evaporation to make up the deficiency of the steam consumption, and at the moment, the water level in the heat storage system starts to be reduced and a heat release process (outward steam supply) is carried out, so that the steam generation amount and the steam release amount of the whole air supply system can be kept balanced all the time.
The steam supply system that this application provided, including the aforesaid steam heat-retaining device, therefore, realize that the supply volume of steam, the nimble in-process that changes of output whole steam supply system still are in balanced state through this steam heat-retaining device to the output volume of steam still can remain stable when the steam supply volume of boiler end changes.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a vapor heat storage device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a vapor heat storage device according to a second embodiment of the present application.
Reference numerals:
1-a heat supply source, 2-a first steam dividing cylinder, 201-a first steam inlet end, 202-a first steam outlet end, 203-a first pressure detection valve, 3-a first automatic regulating valve, 4-a superheating device, 5-a first pipeline, 501-a steam inlet valve, 6-a second steam dividing cylinder, 601-a second steam inlet end, 602-a second pressure detection valve, 7-a second automatic regulating valve, 8-a second pipeline, 801-a steam exhaust valve, 9-a heat accumulator body, 901-a first liquid inlet valve, 902-a first liquid exhaust valve, 10-a steam injection pipe, 11-a steam nozzle, 12-a circulating guide cylinder, 13-a first liquid level meter, 14-a first pressure meter, 15-a steam-water separator, 1501-a first air release valve, and 16-a phase change heat storage and evaporation device, 1601-a first water inlet, 1602-a first water outlet, 17-a first coil, 18-a second coil, 19-a drain tank, 1901-a second water inlet, 1902-a second water outlet, 1903-a second liquid inlet valve, 1904-a second liquid outlet valve, 20-a second liquid level meter, 21-a second pressure meter, 22-a third pipeline, 23-a fourth pipeline, 24-a steam inlet interface, 25-a steam outlet interface and 26-a drain pump.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "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 application can be understood in a specific case by those of ordinary skill in the art.
Vapor heat storage devices and vapor supply systems according to some embodiments of the present application are described below with reference to fig. 1 and 2.
Referring to fig. 1 and 2, embodiments of the present application provide a vapor heat storage device comprising: the steam supply assembly is used as a steam supply end and used for generating and supplying steam, the overheating device 4 is used for enabling the steam entering the overheating device 4 to become superheated steam, the superheated steam enters the heat storage system to realize heat storage and heat release, and the steam released by the heat storage system finally enters the steam outlet assembly and is distributed by the steam outlet assembly.
Specifically, the steam supply assembly comprises a heat supply source 1, a first steam distributing cylinder 2 and a first automatic regulating valve 3, the heat supply source 1 can be a boiler, the first steam distributing cylinder 2 is provided with a first steam inlet end 201 and a first steam outlet end 202, the first steam inlet end 201 is connected with the air supply source through a pipeline, so that steam generated by the air supply source can enter the first steam distributing cylinder 2, and the first steam outlet end 202 is communicated with the overheating device 4 through a pipeline, so that steam in the first steam distributing cylinder 2 can enter the overheating device 4; in addition, the first sub-cylinder 2 is provided with a first pressure detecting valve 203, the first pressure detecting valve 203 is connected to a detecting end of the first automatic adjusting valve 3, the first pressure detecting valve 203 is provided with a pressure detecting member such as a sensor, a pressure gauge, or the like, and the first automatic adjusting valve 3 automatically adjusts the opening degree according to a result of detecting the pressure in the first sub-cylinder 2, or a result of detecting the amount of steam in the first sub-cylinder 2.
It should be noted that the first steam sub-cylinder 2 is provided with at least one port for connecting a steam using passage, so that the first steam sub-cylinder 2 can provide high-pressure steam for the steam using end through the steam using passage, where the high-pressure steam is higher in output pressure than the steam released by the second steam sub-cylinder 6, and therefore, the steam that can be output from the first steam sub-cylinder 2 through the steam using passage is high-pressure steam, and the steam that can be output through the second steam sub-cylinder 6 is pressure steam.
Further, the superheating device 4 may be a superheater in the prior art, a heat coil is formed inside the superheating device 4, and is used for further heating steam entering the superheating device 4 and generating superheated steam, the superheating device 4 is formed with a first inlet 401, a first outlet 402, a second inlet 403, and a second outlet 404, the first steam outlet 202 of the first steam branch cylinder 2 is connected to the first inlet 401 through a pipeline, so that steam in the first steam branch cylinder 2 can enter the superheating device 4 through the first inlet 401, specifically, the steam enters the heat coil in the superheating device 4 to generate superheated steam, the first outlet 402 is connected to the steam inlet of the first automatic regulating valve 3, the detection end of the first automatic regulating valve 3 receives data transmitted by the pressure detection member of the first pressure detection valve 203 and then adjusts the opening degree of the first automatic regulating valve 3 according to the data result, the steam inlet 24 of the heat storage system is connected to the steam outlet of the first automatic regulating valve 3 through the first pipeline 5, so that the superheated steam enters the heat storage system through the first automatic regulating valve 3 and the first pipeline 5.
The first self-regulating valve 3 and the second self-regulating valve 7 described below may be an electric regulating valve, a gas flow rate self-regulating valve, a steam flow rate regulating valve, or the like in the related art.
Further, the steam outlet assembly comprises a second steam dividing cylinder 6 and a second automatic regulating valve 7, wherein the second steam dividing cylinder 6 is formed with a second steam inlet 601 and a plurality of steam outlet ports, each steam outlet port is provided with a corresponding valve, the second steam inlet 601 is connected with the second outlet 404 of the superheating device 4 through a pipeline, the second steam dividing cylinder 6 is further formed with a second pressure detection valve 602 for detecting the pressure in the second steam dividing cylinder 6 or the amount of steam in the second steam dividing cylinder 6, the second pressure detection valve 602 is connected with the detection end of the second automatic regulating valve 7, the steam outlet 25 of the heat storage system is connected with the steam inlet of the second automatic regulating valve 7 through a second pipeline 8, the steam outlet of the second automatic regulating valve 7 is connected with the second inlet 403 of the superheating device 4, so that the steam in the heat storage system can enter the steam outlet assembly through the second pipeline 8 and the second automatic regulating valve 7 and can be conveyed to the steam using end through a plurality of channels through the plurality of steam outlet ports, and the second self-regulating valve 7 can adjust the opening degree according to the detection result of the second pressure detecting valve 602 to adjust the amount of the steam delivered to the second diverging cylinder 6.
Two different forms of thermal storage systems provided by the present application will be described below by way of two embodiments:
in the first embodiment, the heat storage system does not use a phase change heat storage material:
as shown in fig. 1, the present embodiment provides a first heat storage system including: a heat accumulator body 9 with a tank body or box body structure, wherein a steam inlet 24 and a steam outlet 25 are formed on the upper surface of the heat accumulator body 9, a steam injection pipe 10 is arranged inside the heat accumulator body 9, water with certain temperature after being heated is stored inside the heat accumulator body 9, two ends of the steam injection pipe 10 are sealed, at least one steam injection pipe 10 is arranged on the pipe wall of the steam injection pipe 10, so that steam entering the heat accumulator body 9 is injected into the water through the steam injection pipe 10 and releases latent heat, and the condensed water is mixed with the originally stored water in the heat accumulator body 9, so that the water level in the heat accumulator body 9 gradually rises, meanwhile, the water in the heat accumulator gradually rises due to the release of the latent heat of the superheated steam, so as to realize the heat accumulation process of the heat accumulation system, when the internal pressure of the heat accumulator body 9 reaches the pressure of the heat supply source 1 (boiler) or the pressure in the steam supply assembly, the heat charging process is stopped, meanwhile, the steam outlet assembly of the heat accumulator body 9 can supply steam, and the steam inlet and the steam outlet of the heat accumulator body 9 are in a balanced state; when the steam consumption load of the steam outlet assembly is increased, the amount of steam flowing out through the steam outlet interface 25 is increased, at the moment, the pressure in the heat accumulator body 9 is reduced, the heated water (which can be called as superheated water) in the heat accumulator body 9 is flashed and evaporated to generate secondary steam, and the water level in the heat accumulator body 9 is reduced, so that the insufficient steam supply amount of the heat supply source 1 is supplemented, and the steam outlet amount of the steam outlet assembly can be increased in a short time.
Further, the water spray pipe is further provided with at least one circulation guide cylinder 12 for guiding the water in the heat accumulator body 9, so that the temperature of the water in the heat accumulator body 9 can be uniformly increased. In the embodiment shown in fig. 1, the number of the circulation guide cylinders 12 is two, but is not limited thereto, and may be three or more.
It should be noted that the water spray pipe is connected to the first pipe 5, and the connection mode may be that the end of the first pipe 5 far from the first self-regulating valve 3 is connected to the steam inlet port 24 at the outside of the regenerator body 9, and the steam inlet port 24 is connected to the steam spray pipe 10 through another pipe inside the regenerator body 9, or preferably, the end of the first pipe 5 far from the first self-regulating valve 3 extends to the inside of the regenerator body 9 through the steam inlet port 24 and is connected to the steam spray pipe 10.
Preferably, an intake valve 501 is provided on the portion of the first line 5 outside the heat accumulator body 9 for controlling the on/off of the superheating device 4 and the intake port 24 of the heat accumulator body 9, and the intake valve 501 and an exhaust valve 801 described below are embodied as a check valve or a stop valve, so that the steam can flow only to and into the heat accumulator body 9 without backflow.
Further, a steam-water separator 15 is arranged at a steam outlet port 25 of the heat accumulator body 9, and one end of the second pipeline 8 is communicated with the steam-water separator 15, so that secondary steam generated in the heat accumulator body 9 firstly passes through the steam-water separator 15 to remove moisture contained therein, only the steam enters the superheating device 4 through the second pipeline 8, and the temperature is further raised by another hot coil in the superheating device 4, and the moisture content in the steam is further reduced; preferably, a steam exhaust valve 801 is arranged between the second pipeline 8 and the second automatic regulating valve 7 and is used for controlling the on-off between the steam outlet port 25 of the heat accumulator body 9 and the second inlet 403 of the overheating device 4.
Preferably, the upper part of the steam-water separator 15 is further provided with a first air release valve 1501 for releasing the gas in the gas separator to avoid the pressure in the steam-water separator 15 from being too high.
Further, the heat accumulator body 9 is further provided with a first liquid inlet, a first liquid outlet, a first liquid level meter 13 and a first pressure gauge 14, wherein the first liquid inlet is used for injecting water into the heat accumulator body 9, preferably, the water injected into the heat accumulator body 9 through the first liquid inlet is heated, the first liquid inlet is arranged on the upper surface or the side wall surface of the heat accumulator body 9, and the first liquid inlet is provided with a first liquid inlet valve 901, the first liquid outlet is arranged at the bottom of the heat accumulator body 9, and the first liquid outlet is provided with a first liquid discharge valve 902 for discharging the water in the heat absorber body.
Preferably, a check valve is further disposed on a pipeline between the first liquid inlet and the first liquid inlet valve 901.
The first level gauge 13 is disposed outside the heat accumulator body 9 and communicates with the inside of the heat accumulator body 9 for measuring the water level of the water in the heat accumulator body 9, and the first level gauge 13 and the second level gauge 20 described below may be conventional common-coupler-type level gauges, magnetic flap level gauges or other types of level gauges, and those skilled in the art are fully capable of making optimal selection according to actual situations, and are not limited herein.
The dial plate of the first pressure gauge 14 is disposed outside the heat accumulator body 9, and the detection head of the first pressure gauge 14 extends to the inside of the heat accumulator body 9 to detect the pressure inside the heat accumulator body 9.
In summary, in the specific working process of the steam heat storage device provided by the first embodiment of the present application, the boiler stably operates under the optimal combustion condition, and the steam yield does not need to change along with the steam consumption load, that is, the steam yield of the boiler is the average value of the steam consumption load. If the high pressure load is unchanged (the steam supply quantity at the steam supply end of the boiler is unchanged) and the low pressure steam load (the steam consumption quantity at the steam consumption end) is instantaneously reduced, the pressure behind the valve of the second automatic regulating valve 7 tends to increase, at the moment, the second automatic regulating valve 7 transmits a pressure increase signal behind the valve to the second automatic regulating valve 7 to automatically close the second automatic regulating valve 7, so that the steam flow passing through the second automatic regulating valve 7 is reduced, because the steam flow passing through the first automatic regulating valve 3 is unchanged, the pressure at the connecting point of the first pipeline 5 and the pipeline is increased, when the pressure is higher than the pressure in the heat accumulator body 9, redundant steam enters the heat accumulator body 9 under the pressure effect, the high pressure steam is sprayed into water through a steam nozzle 11 in the heat accumulator body 9 to release latent heat of vaporization and condense, so that the temperature of the water in the tank is gradually increased, and the steam pressure in the tank is also increased, the water level rises along with the water level, and the process is a heat filling process; when the pressure in the tank reaches the steam charging pressure of the boiler, the heat charging process is automatically stopped, and the steam-water temperature in the tank reaches the temperature of saturated steam under the pressure; if the load of low-pressure or high-pressure steam is increased, the superheated water quickly flashes and evaporates to generate secondary steam due to the reduction of the pressure in the heat accumulator body 9 so as to supplement the shortage of the steam supply amount of the boiler. Meanwhile, superheated water in the heat accumulator body 9 is evaporated in a flash manner, and the water level is reduced, and the process is the heat release process of the heat accumulation system; if the high-pressure steam load and the low-pressure steam load change simultaneously, the high-pressure steam load and the low-pressure steam load can still be kept stable on the rated pressure value by the automatic regulation action of the two regulating valves and do not change along with the fluctuation of the steam load.
(II) second embodiment, a heat storage system using a phase change heat storage material:
as shown in fig. two, the second thermal storage system according to the present embodiment includes: the phase-change heat-storage evaporation device comprises a phase-change heat-storage evaporation device 16 and a drain tank 19, wherein the phase-change heat-storage evaporation device 16 is provided with a first coil 17 and a second coil 18 at intervals, the phase-change heat-storage evaporation device 16 is filled with a phase-change material, the phase-change material coats the first coil 17 and the second coil 18, and preferably, a heat insulation layer is arranged between the phase-change material and the inner wall of the phase-change heat-storage evaporation device 16.
Further, the shell of the phase-change heat-storage evaporation device 16 is provided with the steam inlet 24, the steam outlet 25, the first water inlet 1601 and the first water outlet 1602, one end of the first coil 17 passes through the steam inlet 24 to be connected with the first pipeline 5, or one end of the first pipeline 5 passes through the steam inlet 24 to be connected with one end of the first coil 17, the other end of the first coil 17 is communicated with the first water outlet 1602, and the first water outlet 1602 is provided with a third pipeline 22 extending towards the outside of the phase-change heat-storage evaporation device 16, so that the first coil 17 is connected with the second water inlet 1901 of the drain tank 19 through the third pipeline 22, one end of the second coil 18 is connected with the second pipeline 8 through the steam outlet 25, the other end of the second coil 18 is communicated with the first water inlet 1601, and the first water inlet 1601 extends to the outside of the phase change heat storage evaporation device 16 and is provided with a fourth pipeline 23, so that the second coil 18 is communicated with the fourth pipeline 23 through the first water inlet 1601. The end of the fourth pipe 23 far from the first water inlet 1601 is connected to the second water outlet 1902 of the drain tank 19, so that the water in the drain tank 19 can flow into the second coil 18 through the fourth pipe 23.
Further, a water inlet valve is disposed between the third pipeline 22, i.e., the first water outlet 1602 and the second water inlet 1901, and is used for controlling the on/off of the first water outlet 1602 and the second water inlet 1901; the fourth pipeline 23 is provided with a drain pump 26 to make the water in the drain tank 19 flow to the second coil 18 in the phase-change heat-storage evaporation device 16, and a water supply valve is arranged between the drain pump 26 and the first water inlet 1601 for controlling the on-off of the water path.
Further, the drain tank 19 is further provided with a second liquid level meter 20 for detecting and indicating the height of the water level in the drain tank 19, and the second liquid level meter 20 is arranged in a manner as referred to the first liquid level meter 13; a second liquid inlet is arranged on the side wall or the top of the drain tank 19, and a second liquid inlet valve 1903 is arranged on the second liquid inlet and is used for supplementing the heated water with a certain temperature into the drain tank 19; a second liquid outlet is arranged at the bottom of the drain tank 19 and provided with a second liquid discharge valve 1904 for discharging the water in the drain tank 19; in addition, the drain tank 19 is further provided with a second pressure gauge 21 for detecting and displaying the pressure in the drain tank 19, and the setting mode of the second pressure gauge 21 can refer to the first pressure gauge 14, which is not described again.
To sum up, in the specific working process of the steam heat storage device provided in the second embodiment of the present application, the boiler stably operates under the optimal combustion condition, the steam generation amount does not need to change along with the steam load, even if the steam generation amount of the boiler is the average value of the steam load, if the high pressure load is not changed and the low pressure steam load is instantly reduced, the pressure behind the valve of the second automatic regulating valve 7 tends to increase, at this time, the pressure signal behind the valve of the second automatic regulating valve 7 is transmitted to the second automatic regulating valve 7 to be automatically turned off, and at the same time, the flow of the drain pump 26 is reduced, so that the steam flow passing through the second automatic regulating valve 7 is reduced, because the steam flow passing through the first automatic regulating valve 3 is not changed, the pressure at the connection point of the first pipeline 5 and the pipeline is increased, and when the pressure is higher than the pressure in the superheater and the phase-change heat storage evaporation device 16, the steam enters the superheater and the phase-change heat storage evaporation, the heat energy is transferred to the phase-change material, the phase-change material stores the heat, the high-pressure steam releases latent heat of vaporization and is condensed, the condensed water enters the drain tank 19 (condensed water tank), the water level in the drain tank 19 rises along with the condensed water, the process is a heat filling process, when the pressure in the phase-change heat-storage evaporation device 16 reaches the steam filling pressure of the boiler, the heat filling process is automatically stopped, and at the moment, the temperature of the steam in the phase-change heat-storage evaporation device 16 reaches the temperature of saturated steam under the pressure. If the low or high pressure steam load increases. The pressure behind the second automatic regulating valve 7 tends to decrease, and at this time, the pressure signal behind the second automatic regulating valve 7 is transmitted to the second automatic regulating valve 7 to automatically open the second automatic regulating valve, the flow of the drain pump 26 is increased, so that the flow of the superheated water entering the second coil 18 is increased, and the phase-change material coated outside the second coil 18 stores a large amount of heat, so that the superheater in the second coil 18 is vaporized to release steam, so that the flow of the steam flowing through the second automatic regulating valve 7 is increased to supplement the insufficient steam supply of the boiler, which is the heat release process of the heat storage system; if the high-pressure steam load and the low-pressure steam load change simultaneously, the high-pressure steam load and the low-pressure steam load can still be kept stable on the rated pressure value by the automatic regulation action of the two regulating valves and do not change along with the fluctuation of the steam load.
The application provides a steam heat-retaining device, utilizes water and phase change material's heat accumulation function, stores heat energy with the form of saturated water. When the steam consumption is less than the steam production, the steam rich in the boiler is sent into the heat storage system, the water and the steam in the heat storage system are used for carrying out mixed heat transfer to absorb the latent heat of the steam, the water is heated, the steam is condensed into water, and the melting value of the water in the heat storage system is increased to the saturated water melting value corresponding to the induced steam pressure. At this time, the water level in the heat storage system also rises due to the condensation of the steam, and thus a so-called charging process of the heat storage system is performed. When the steam consumption is suddenly increased or the steam production is reduced, the steam quantity is insufficient, and the user continues to use steam, the pressure in the heat storage system is reduced, the original melting value of water in the heat storage system is larger than the corresponding saturated water melting value after the pressure is reduced, so that part of water is converted into steam through flash evaporation to make up the deficiency of the steam, and at the moment, the water level in the heat storage system starts to be reduced and a heat release process (outward steam supply) is carried out, so that the steam generation quantity and the steam release quantity of the whole steam supply system can be kept balanced all the time.
An embodiment of the present application further provides a steam supply system, including the steam heat storage device of any of the above embodiments, and therefore, all beneficial technical effects of the steam heat storage device are achieved, and details are not repeated herein.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A vapor heat storage device, comprising:
the heat storage system is provided with a steam inlet interface and a steam outlet interface;
the steam supply assembly is connected with the steam inlet interface and is used for supplying steam to the heat storage system;
the steam outlet assembly is connected with the steam outlet interface;
the heat storage system is set with a heat charging process and a heat discharging process, and is used for enabling the steam supply assembly and the steam outlet assembly to be in a pressure balance state.
2. The vapor heat storage device of claim 1 further comprising a superheating means formed with a first inlet, a first outlet, a second inlet and a second outlet;
the first inlet is communicated with the steam supply assembly;
the first outlet is communicated with a steam inlet of the heat storage system;
the second inlet is communicated with a steam outlet of the heat storage system;
the second outlet is communicated with the steam outlet assembly.
3. A vapor thermal storage device according to claim 2 wherein said vapor supply assembly comprises:
a heat supply source for generating and providing steam to the thermal storage system;
the first steam dividing cylinder is provided with a first steam inlet end, a first steam outlet end and a first pressure detection valve; the first steam inlet end is connected with the heat supply source; the first steam outlet end is communicated with the first inlet;
the first automatic regulating valve is arranged on a first pipeline used for communicating the first outlet with the steam inlet interface, and the first pressure detection valve is connected with the first automatic regulating valve.
4. A vapor thermal storage device according to claim 3 wherein said vapor outlet assembly comprises:
the second steam distributing cylinder is provided with a second steam inlet end, a second steam outlet end and a second pressure detection valve; the second steam inlet end is communicated with the second outlet;
and the second automatic regulating valve is arranged on a second pipeline for communicating the second inlet with the steam outlet port, and the second pressure detection valve is connected with the second automatic regulating valve.
5. A vapor thermal storage device according to claim 4 wherein said thermal storage system comprises:
the heat accumulator body is provided with the steam inlet interface and the steam outlet interface;
the steam injection pipe is arranged inside the heat accumulator body and is provided with at least one steam nozzle and at least one circulating guide cylinder;
one end of the first pipeline, which is far away from the first automatic regulating valve, penetrates through the heat accumulator body and is connected with the steam injection pipe, and the first pipeline is provided with a steam inlet valve.
6. The vapor thermal storage device according to claim 5, wherein the heat accumulator body is further provided with:
the first liquid inlet is provided with a first liquid inlet valve;
the first liquid outlet is provided with a first liquid discharge valve;
the first liquid level meter is used for measuring the liquid level height of the liquid stored in the heat accumulator body;
and the first pressure gauge is used for detecting and indicating the pressure in the heat accumulator body.
7. The steam heat storage device according to claim 5, wherein a steam-water separator is arranged at a steam outlet port of the heat accumulator body, one end of the second pipeline is communicated with the steam-water separator, the other end of the second pipeline is connected with the second automatic regulating valve, and the second pipeline is provided with a steam exhaust valve;
the steam-water separator is provided with a first deflation valve.
8. A vapor thermal storage device according to claim 4 wherein said thermal storage system comprises:
the phase-change heat storage evaporation device is provided with the steam inlet interface and the steam outlet interface; the phase-change heat-storage evaporation device is also provided with a first water inlet and a first water outlet;
the first coil is arranged in the phase-change heat-storage evaporation device, one end of the first coil penetrates through the steam inlet to be connected with the first pipeline, and the other end of the first coil is communicated with the first water outlet;
the second coil pipe is arranged in the phase-change heat-storage evaporation device, one end of the second coil pipe is communicated with the first water inlet, and the other end of the second coil pipe penetrates through the steam outlet interface to be connected with the second pipeline;
the phase-change material is arranged in the phase-change heat-storage evaporation device and coats the first coil pipe and the second coil pipe;
the drain tank is provided with a second water inlet and a second water outlet; the second water inlet is connected with the first coil pipe through a third pipeline, and the third pipeline is provided with a water inlet valve; the second water outlet is connected with the second coil pipe through a fourth pipeline, and a water supply valve is arranged on the fourth pipeline;
and the drain pump is arranged on the fourth pipeline.
9. The vapor thermal storage device of claim 8 wherein the trap tank is provided with:
the second liquid level meter is used for detecting the water level height in the drain tank;
a second liquid inlet and a second liquid outlet; the second liquid inlet is provided with a second liquid inlet valve, and the second liquid outlet is provided with a second liquid outlet valve;
and the second pressure gauge is used for detecting and indicating the pressure in the drain tank.
10. A steam supply system comprising a vapour heat storage device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110381612.XA CN113008064A (en) | 2021-04-09 | 2021-04-09 | Steam heat storage equipment and steam supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110381612.XA CN113008064A (en) | 2021-04-09 | 2021-04-09 | Steam heat storage equipment and steam supply system |
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| CN113008064A true CN113008064A (en) | 2021-06-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096120A (en) * | 2022-06-14 | 2022-09-23 | 国网江苏省电力有限公司常州供电分公司 | Parameter design method of steam heat accumulator based on phase change theory |
| CN115490383A (en) * | 2022-09-27 | 2022-12-20 | 国能神东煤炭集团有限责任公司 | Membrane distillation device |
| CN117028960A (en) * | 2023-09-27 | 2023-11-10 | 国网江苏省电力有限公司常州供电分公司 | Closed circulation steam generating device with heat storage function |
-
2021
- 2021-04-09 CN CN202110381612.XA patent/CN113008064A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115096120A (en) * | 2022-06-14 | 2022-09-23 | 国网江苏省电力有限公司常州供电分公司 | Parameter design method of steam heat accumulator based on phase change theory |
| CN115490383A (en) * | 2022-09-27 | 2022-12-20 | 国能神东煤炭集团有限责任公司 | Membrane distillation device |
| CN115490383B (en) * | 2022-09-27 | 2023-07-14 | 国能神东煤炭集团有限责任公司 | Membrane distillation device |
| CN117028960A (en) * | 2023-09-27 | 2023-11-10 | 国网江苏省电力有限公司常州供电分公司 | Closed circulation steam generating device with heat storage function |
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