CN110397978B - Energy storage device and control method thereof - Google Patents
Energy storage device and control method thereof Download PDFInfo
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- CN110397978B CN110397978B CN201910744317.9A CN201910744317A CN110397978B CN 110397978 B CN110397978 B CN 110397978B CN 201910744317 A CN201910744317 A CN 201910744317A CN 110397978 B CN110397978 B CN 110397978B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 401
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000012806 monitoring device Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 238000005338 heat storage Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000153 supplemental effect Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000011232 storage material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
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- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
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- 230000001502 supplementing effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
- F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1042—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses solar energy
Abstract
The invention discloses an energy storage device, which comprises a boiler, and further comprises: a water storage container; the water outlet of the boiler is connected to the water inlet of the water storage container through a pipeline; a water mixing system; the water mixing system comprises a water inlet end and a water outlet end, the water outlet end is used for outputting heat to an external system, and the water outlet end is connected with a first temperature detection device; the water outlet of the water storage container is connected to the water inlet end of the water mixing system through a pipeline; the water storage container return pipeline is connected to the water storage container from an external system, and is connected with a first branch pipeline, the first branch pipeline is connected to the water inlet end of the water mixing system through a first control valve, and part of return water is conveyed to the water mixing system so as to be mixed with hot water output by the water storage container. The device can be when the temperature of heat supply is too high, surpasses actual demand's temperature, adjusts the temperature.
Description
Technical Field
The invention relates to the technical field of boilers, in particular to an energy storage device for outputting hot water by using a boiler and a control method thereof.
Background
The hot water generated in the boiler can be outputted as a heat source to be applied to domestic heating and industrial heating. The hot water output by the boiler is usually connected with a heat supply pipe network through a heat supply pipe, flows in the pipe network to realize heat exchange with the external environment, and then the external environment returns the exchanged cold water to the boiler through a water return pipeline to heat again, so that the cycle is repeated.
However, sometimes the temperature of the hot water directly produced by the boiler is too high, significantly above the temperature required for heating or other industrial use. Taking heating application as an example, sometimes the temperature output by the boiler makes the indoor temperature far exceed the comfortable degree of human body, and the indoor environment is overheated, so that the heat is excessive to cause waste, and the expected effect of heating is not achieved.
Disclosure of Invention
The invention aims to provide an energy storage device and a control method thereof, which can regulate water temperature when the temperature of heat supply is too high and exceeds the actual required temperature when hot water output by a boiler is used for energy storage.
To achieve the above object, in a first aspect, an embodiment of the present invention provides an energy storage device, including a boiler, wherein the energy storage device further includes:
a water storage container; the water outlet of the boiler is connected to the water inlet of the water storage container through a pipeline;
a water mixing system; the water mixing system comprises a water inlet end and a water outlet end, the water outlet end is used for outputting heat to an external system, and the water outlet end is connected with a first temperature detection device; the water outlet of the water storage container is connected to the water inlet end of the water mixing system through a pipeline;
the water storage container return pipeline is connected to the water storage container from an external system, and is connected with a first branch pipeline, the first branch pipeline is connected to the water inlet end of the water mixing system through a first control valve, and part of return water is conveyed to the water mixing system so as to be mixed with hot water output by the water storage container.
Further, a backwater blocking system is arranged on the backwater pipeline of the water storage container and used for blocking backwater of the water storage container, and the backwater blocking position is positioned on the downstream side of a branching point formed by branching of the first branch pipeline on the backwater pipeline of the water storage container.
Further, the backwater blocking system includes:
a second control valve; the second control valve is positioned at the backwater blocking position and can block backwater to the water storage container, so that all backwater flows back to the water mixing system.
A second temperature detecting means; the second temperature detection device is connected to the water storage container return pipeline between the second control valve and the branching point.
Further, the second control valve is a three-way valve, the inlet of the three-way valve is located at the upstream side of the water return pipeline of the water storage container, one outlet of the three-way valve is located at the downstream side of the water return pipeline of the water storage container, the other outlet of the three-way valve is connected to the water inlet end of the water mixing system through a pipeline, and the return water can be controlled to flow back to the water storage container or be blocked by switching the outlet of the second control valve, so that the return water is conveyed to the water mixing system.
Further, the water mixing system includes: the water mixing pipeline is used for mixing flow, a water inlet end and a water outlet end are formed on the water mixing pipeline, the water inlet end is connected with a water outlet of the water storage container and the downstream side of the first branch pipeline, and a water pump is further arranged on the water mixing pipeline and used for pumping the mixed water to an external system.
Further, a branch point is constructed on the pipeline of the water outlet of the boiler, the branch point is connected to the pipeline of the water outlet of the water storage container through a pipeline, and valves are arranged on two sections of pipelines separated from the downstream side of the branch point.
Further, a boiler water return pipeline leading to the boiler water inlet is also connected to the water storage container, a branch point is constructed on the boiler water return pipeline, the branch point is connected to the water return pipeline of the water storage container through a pipeline, and valves are arranged on two sections of pipelines separated from the upstream side of the branch point.
Further, the water storage container is also connected with a supplementary heat system, and the supplementary heat system is a solar heat supply system or an air energy heat supply system, so that heat from the solar heat supply system or the air energy heat supply system is transmitted into the water storage container.
Further, the supplementary heat system is a solar energy system, and the output end of the solar energy system is led into the water storage container through a pipeline and is connected with a water distributor.
Further, a phase change energy storage unit is arranged in the water storage container and used for storing heat transmitted from the outside of the water storage container and releasing the heat when heat supply is needed.
In a second aspect, an embodiment of the present invention further provides a method for controlling the energy storage device, including:
receiving a water outlet temperature signal detected by a first temperature detection device;
when the outlet water temperature is detected to exceed the preset target temperature, the first control valve is controlled to be opened, so that part of backwater enters the water mixing system;
and when the temperature of the outlet water is detected to be reduced to or below the target temperature, the first control valve is controlled to be closed.
Further, the water storage container water return pipeline is provided with a water return blocking system for blocking water return of the water storage container, and the water return blocking position is located at the downstream side of a branching point formed by branching of the first branch pipeline on the water storage container water return pipeline, and the method further comprises:
and when the first control valve is fully opened and the output water temperature still cannot reach below the target temperature, starting the backwater blocking system.
Further, the water storage container is also connected with a solar heating system and a heat storage variable frequency pump, and the method further comprises: the heat storage variable frequency pump carries out PID adjustment according to the temperature difference between two temperature collecting points of the solar energy and the water storage container.
Further, a phase change energy storage unit is arranged in the water storage container and used for storing heat transmitted from the outside of the water storage container and releasing the heat when heat supply is needed; the method further comprises the steps of: the phase-change energy storage unit stores heat through the phase change of the material in a high-temperature season, and the phase-change energy storage unit releases heat through the phase change of the material in a low-temperature season; the energy storage comprises utilizing air energy and electricity of an electric boiler.
Further, the energy storage device further comprises an indoor temperature monitoring device and/or an outdoor temperature monitoring device, and the control method further comprises:
and adjusting the target output temperature of the energy storage device according to the temperature signal monitored by the indoor temperature monitoring device and/or the outdoor temperature monitoring device.
According to the technical scheme provided by the embodiment of the invention, the first branch pipeline capable of controlling the on-off is arranged on the water return pipeline of the water storage container, when the output temperature of the stored water in the water storage container is too high, the first branch pipeline can be opened, part of backwater is conveyed into the water mixing system to be mixed with the directly output hot water, the effect of reducing the output temperature is achieved, and therefore the output water temperature is reduced to a proper level.
Drawings
Fig. 1 is a schematic structural diagram of an energy storage device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an energy storage device according to another embodiment of the present invention.
In the figure:
110-a boiler; 111-a boiler water outlet; 112-a boiler return water port;
120-a water storage container; 121-a water inlet of a water storage container; 122-a water outlet of the water storage container;
123-a water return port of the water storage container; 130-a water mixing system; 131-a water inlet end;
132-water outlet end; 133-a water mixing pipeline; 134-a water pump;
140-a backwater blocking system; 141-a second control valve; 150-supplemental thermal system;
151-solar heating system; 201-a first pipeline; 202-a second pipeline;
203-a third line; 204-a first branch line; 205-a first control valve;
206-a second branch line; 207-a first branch point; 208-a third branch line;
209-fourth branch line; 301-a water return line of the water storage container; 302-a first shunt point;
303-a second split point; 401-a first temperature detection device; 402-a second temperature detection device;
501-a first valve; 502-a second valve; 503-a third valve;
504-fourth valve; 505-fifth valve; 506-sixth valve;
601-boiler return line; 602-a second fulcrum; 701-a water distributor;
702-solar energy return pipe
801-phase change energy storage unit
Detailed Description
The principles and spirit of the present invention will be described below with reference to several exemplary embodiments shown in the drawings. It should be understood that these embodiments are merely described to enable those skilled in the art to better understand and to practice the invention and are not intended to limit the scope of the invention in any way.
Referring to fig. 1, an energy storage device provided in an embodiment of the present invention includes a boiler 110, a water mixing system 130 of a water storage container 120, and related piping, valves, etc. The boiler 110 has a boiler water outlet 111 and a boiler water return 112. The hot water output from the boiler outlet 111 of the boiler 110 is firstly delivered to the water storage container, and then is output to an external system, such as a heating pipe network, through the water mixing system 130. The return water returned from the external system passes through the water storage container 120 again, is delivered to the boiler return water port 112, and is returned to the boiler 110.
The water storage container is used for storing hot water from the boiler, receiving cold water flowing back from an external system and playing roles in storage and transfer. The construction of the water storage container may take various forms, such as the shape of the tank shown in fig. 1.
In some embodiments, the boiler water outlet 111 is connected to the first pipe 201, and an end of the first pipe 201 is connected to the water container water inlet 121 of the water container 120, for example, may be connected to an upper end of the water container 120. The water container 120 is further provided with a water container outlet 122, for example, the water container outlet 122 and the water container inlet 121 may be disposed at the same height at intervals. The water outlet 122 of the water storage container is connected with the second pipeline 202, the tail end of the second pipeline 202 is connected with the water inlet end 131 of the water mixing system, and then the water is output to an external system through the third pipeline 203 connected with the water outlet end 132 of the water mixing system. A first temperature detecting means 401, such as a temperature sensor assembly, may be provided on the third pipe 203 for monitoring the temperature of the output hot water in real time.
When the external system returns water, the external system is firstly connected with the water return pipeline 301 of the water storage container, and the downstream side of the water return pipeline 301 of the water storage container is connected with the water return port 123 of the water storage container on the water storage container 120. The upstream side of the water reservoir return line 301 may be higher than the downstream side so that return water may automatically return under gravitational potential energy. A first diversion point 302 is formed on the water reservoir return line 301, the first diversion point 302 is connected to the first diversion line 204, and the downstream side of the first diversion line 204 is connected to the water inlet 131 of the water mixing system 130.
A first control valve 205 (which may be an electric two-way valve) is further installed on the first branch pipe 204, and the first control valve 205 can control the conduction and blocking of the first branch pipe 204. When the first temperature detecting device 401 detects that the output water temperature is too high, the first control valve 205 opens the first branch pipeline 204, at this time, the water flowing back from the water storage container water return pipeline 301 is split at the first split point 302, part of the water continuously flows back into the water storage container 120 along the water storage container water return pipeline 301, and the other part of the water flows into the water mixing system 130 along the first branch pipeline 204. In the water mixing system 130, on the one hand, hot water output from the boiler 110 is received, and on the other hand, return water from the first branch pipeline 204 is received, and the temperature of the return water is relatively low, so that after the return water and the hot water are mixed and blended, the overall water temperature is reduced, and the temperature of the output water is reduced. After the desired output water temperature is reduced, the energy storage device does not need to introduce return water to reduce the temperature, and the first control valve 205 is closed.
In some embodiments, the switching frequency between on and off of the first control valve 205 may be higher. When the first temperature detecting means 401 detects that the temperature of the output water is slightly higher than the expected water temperature, the first control valve 205 is immediately opened to deliver backwater, and the temperature of the output water is reduced. Because the difference between the water temperature at this time and the desired water temperature is small, the return water can quickly reduce the overall output water temperature to the desired level, at which time the first control valve 205 is immediately closed in order to avoid that the water temperature continues to drop below the desired level. After a short time interval, the output water temperature reaches a level slightly higher than the expected water temperature, and the first control valve 205 is controlled to be opened again, so that the output water temperature can be kept in a relatively constant state all the time, and the constant state is regulated in real time at a high frequency by the first control valve 205.
Sometimes, although the first control valve 205 is kept in a normally open state, the output water temperature cannot be reduced to a desired level. The inventor finds that the water temperature output by the boiler is too high, and the return water diverted from the first diversion point 302 is only a part of the total return water, so that the cooling effect is not obvious enough. For this purpose, a water return blocking system 140 is provided on the water reservoir water return line 301 downstream of the first diversion point 302 at a second diversion point 303, the second diversion point 303 being provided for controlling the blocking of all return water.
The return water blocking system 140 may take a variety of forms, if there are valves, valve blocks, combinations of valves and piping, etc. with various types of passages. For example, in the embodiment shown in fig. 1, the backwater blocking system 140 includes a second control valve 141, where the second control valve 141 is a split three-way valve, and has one inlet and two outlets, and one of the outlets may be opened and the other outlet may be closed by controlling the on-off of the second control valve 141. The inlet of the second control valve 141 is located at the upstream side, one outlet of the downstream side is opened to the water storage container 120 along the water storage container return line 301, the other outlet is connected to the second branch line 206, and the downstream side of the second branch line 206 is connected to the water inlet end 131 of the water mixing system. In addition, a second temperature detection device 402 is further arranged on the pipeline between the second diversion point 303 and the first diversion point 302, and the second temperature detection device 402 is used for detecting the temperature of backwater.
A second temperature detecting device 402 is provided in the backwater blocking system 140, i.e. it can be determined from the temperature of the backwater whether the backwater diverted from the first branch pipeline 204 is sufficient to reduce the output water temperature to a desired level. This is because the temperature of the hot water output from the boiler 110 is high, and if the temperature of the return water detected by the second detecting means 402 has already approached the threshold temperature of the first control valve 205 (i.e., the temperature of the water to be output), it is indicated that the temperature of the return water diverted is insufficient to significantly lower the temperature of the hot water output from the boiler 110.
When the first temperature detecting means 401 detects that the output water temperature is too high, i.e. higher than the expected output temperature t 1 And the second temperature detecting device 402 detects that the temperature of the backwater is also higher than the predetermined backwater temperature value t 2 When this is the case, the second control valve 141 is controlled to close the outlet to the water reservoir 120 and open the outlet to the second branch line 206. At this time, all the backwater is blocked, and the backwater is not returned to the water storage container 120, but is fed to the water mixing system through the first branch pipe 204 and the second branch pipe 206. Thus, all backwaterFor reducing the output water temperature, the output water temperature can be further reduced.
According to the present embodiment, the temperature threshold t is set 1 And t 2 At this time, t can be 2 The temperature of (2) is slightly less than t 1 Is set in the temperature range of (a). If the second temperature detecting means 402 detects that the return water temperature is higher than t 2 It indicates that the temperature of the backwater is higher at this time, if the backwater continues to enter the water storage container 120, the backwater is further heated in the water storage container 120 which has very high temperature, and then enters the boiler 110 for circulation, so that the decrease of the output water temperature is more unfavorable, therefore, the second control valve 141 should be controlled to close the backwater to the water storage container 120, open the outlet to the second branch pipeline 206, and the whole backwater recovered at this time is not heated in the water storage container 120 and the boiler 110 any more, but directly enters the water mixing system to decrease the water temperature output by the boiler 110 until the output temperature is reduced to t 1 And the temperature of the backwater is reduced to t 2 The second control valve 141 is controlled to close the outlet to the second branch pipe 206, and to open the outlet to the water storage container 120, thereby returning water again.
Threshold temperature t 1 And t 2 The arrangement of (2) can be flexibly adjusted according to seasonal changes or other heat supply requirements, for example, when the output hot water is used as heating heat supply, t can be set at the beginning of winter with slightly cold weather 1 Setting to 35 ℃, t 2 Setting at 32deg.C, and heating t in extremely cold weather and deep winter 1 Setting to 40 ℃, t 2 Set to 38 ℃.
In some embodiments, the water mixing system 130 includes a water mixing pipe 133 for mixing the flow, the water mixing pipe 133 having a water inlet end 131 and a water outlet end 132 configured thereon, the water inlet end 131 being connected to the water outlet 122 of the water storage container and the downstream side of the first branch pipe 204, and the water mixing pipe 133 further having a water pump 134 thereon for pumping the mixed water to an external system. The number of the water inlet ends 131 may be plural, depending on the number of pipes to be connected on the upstream side of the water mixing system 130. The number of the water pumps 134 may be plural as well for increasing pumping efficiency. In other embodiments, a tank or the like may be used instead of the mixing line 133.
In some embodiments, the first branch point 207 is configured on the first pipeline 201, and the first branch point 207 is connected to the second pipeline 202 of the water outlet of the water storage container through the third branch pipeline 208, and the downstream side of the first branch point 207 is divided into two sections, one section is connected to the water storage container 120, on which the first valve 501 is disposed, and the other section is the third branch pipeline 208, on which the second valve 502 is disposed. When the hot water is needed to be output, the first valve 501 can be closed, the second valve 502 can be opened, and the hot water output by the boiler 110 is directly output without passing through the water storage container 120, so that the heat supply requirement can be met in time. Further, a third valve 503 may be provided downstream of the connection point of the second pipe 202 to the third branch pipe 208, for controlling the hot water output from the water storage container 120.
The water storage container 120 can be further connected with a boiler return water pipeline 601 leading to the boiler water inlet 122, a second branch point 602 is constructed on the boiler return water pipeline 601, the second branch point 602 is connected to the water storage container return water pipeline 301 through a fourth branch pipeline 209, two sections of pipelines are separated from the upstream side of the second branch point 602, one section of the pipeline is connected with the water storage container 120, a fourth valve 504 is arranged on the pipeline, the other section of the pipeline is a fourth branch pipeline 209, a fifth valve 505 is arranged on the pipeline, and a sixth valve 506 is further arranged on the downstream side of a connection point of the water storage container return water pipeline 301 and the fourth branch pipeline 209. When the fast backwater needs to enter the boiler 110 for reheating, the sixth valve 506 and the fourth valve 504 can be closed, the fifth valve 505 is opened, and the backwater directly enters the boiler 110 without passing through the water storage container 120.
Fig. 2 shows a schematic diagram of an energy storage device according to another embodiment, which differs from fig. 1 in that the water storage container 120 is further connected to a supplementary heating system 150, which may be a solar heating system 151 or an air heating system (not shown), so that heat from the solar heating system 151 or the air heating system is transferred into the water storage container 120.
In some embodiments, the output end of the solar energy system 151 is led to the interior of the water storage container 120 through a pipeline, and a water distributor 701 is connected to the end of the pipeline. The water distributor 701 may have a plurality of water outlets for uniformly supplementing water into the water storage container 120, so that heat is uniformly dispersed. The bottom of the water storage container 120 is also connected with a solar water return pipeline 702.
Further, the water storage container 120 is provided with a phase change energy storage unit 801. The phase-change energy storage unit comprises one or more energy storage tanks, and phase-change energy storage materials are arranged in the energy storage tanks. Such as solid-liquid phase change energy storage materials, solid-solid phase change energy storage materials, which are known in the related art, mainly include high molecular species, layered perovskite, sodium sulfate species, sodium acetate species, fatty acids, polyols, and paraffin waxes. In high temperature season, the phase change energy storage unit can absorb heat (such as air energy and electricity energy storage of the electric boiler) supplied from outside, the phase change material is changed from solid state to liquid state, a large amount of heat is absorbed, and the heat is stored. In the low temperature season, the phase change material is changed from liquid state to solid state, and a large amount of heat is released for heat supply.
The embodiment of the invention also provides a control method of the energy storage device, which comprises the following steps:
s102: receiving a water outlet temperature signal detected by a first temperature detection device;
s104: when the outlet water temperature is detected to exceed a preset target temperature t1, a first control valve is controlled to be opened, so that part of backwater enters the water mixing system;
s106: when the outlet water temperature is detected to be reduced to or below the target temperature t1, the first control valve is controlled to be closed.
In this way, the output water temperature can be adjusted in real time by circulating the steps S104 to S106, so that the output water temperature is always maintained at the preset temperature.
In some embodiments, the method further comprises:
s108: receiving a backwater temperature signal detected by a second temperature detection device;
s110: when the detected backwater temperature is higher than a preset target temperature t2, the backwater blocking system is controlled to block all backwaters, and all backwaters are output to the working state of the water mixing system.
S111: when the detected backwater temperature is lower than a preset target temperature t2, the backwater blocking system is controlled to be in a working state of conducting backwater to the water storage container.
Wherein the target temperature t2 is smaller than the target temperature t1.
Through steps S108-S111, when the backwater conveyed in step S104 is insufficient to reduce the water temperature to the target temperature t1, all backwaters are blocked and used for mixed water cooling.
In some embodiments, an indoor temperature sensor and an outdoor temperature sensor may be further disposed in the indoor and outdoor of the energy storage device, respectively, and when the indoor temperature sensor and the outdoor temperature sensor detect that the temperature reaches a certain threshold, the control unit may adjust the target water temperature output by the energy storage device. For example, when the indoor or outdoor temperature is too high, the output water temperature may be appropriately lowered.
In some embodiments, the first temperature detecting device and the second temperature detecting device may be connected to the communication interfaces of the controllers in the first control valve and the second control valve, respectively, or a central control system may be uniformly provided, so that the first temperature detecting device, the second temperature detecting device, the first control valve, and the second control valve are respectively connected to the communication interfaces of the central control system.
The hardware matched with the control method can comprise three sets of distribution boxes, one frequency converter, one PLC set, one touch screen set and three sets of strong electric elements of the water pump, more temperature sensors (such as 4-6) and one man-hour wire accessories.
A more specific control flow is described below.
The first control valve is an electric two-way regulating valve, and the opening angle of the first control valve is regulated according to the outlet water temperature of the heating system. If the target value of the water outlet temperature is set to be 50 ℃, the controller (PLC) continuously outputs 4-20 mA signals to the electric regulating valve, and the target of stabilizing the water outlet temperature by 50 ℃ is achieved. When the water temperature is continuously over 50 ℃, the electric two-way regulating valve is opened to the highest limit. I.e. the electrically operated valve is closed to its lowest limit when the water temperature is below 50 degrees. Above 50 degrees, work is started, work is continued to achieve the target effort of stabilizing the water outlet temperature by 50 degrees, and the temperature 1 is always started to be maximum when being higher than 50+5 degrees. And simultaneously, the backwater blocking system starts to be started.
When the electric two-way regulating valve is opened to the highest limit and the backwater temperature is 50 degrees, the second control valve (particularly an electric three-way switch valve) starts to work according to the action of the backwater temperature sensor by 45 degrees. When the temperature of the backwater is higher than 45 DEG + -2 DEG, the three-way valve is started to enable the backwater system to circulate, and when the temperature of the backwater is lower than 45 DEG + -2 DEG, the three-way valve is started to guide the water storage container (water tank).
The heat storage variable frequency pump carries out PID adjustment according to the temperature difference between two temperature collecting points of the solar energy and the heat storage water tank. If the temperature difference is set to be 5 ℃, when the temperature of the solar water reaches 70 ℃, the temperature of the heat storage water tank reaches 67 ℃, and the PLC monitors that the temperature difference is more than 5 and is half of the temperature difference, the frequency converter is accelerated, and otherwise, the frequency converter is decelerated. The energy storage system is additionally provided with a timer so as to realize the working of the energy storage device in the daytime and the rest at night.
Specific examples are set forth herein to illustrate the invention in detail, and the description of the above examples is only for the purpose of aiding in understanding the core concept of the invention. It should be noted that any obvious modifications, equivalents, or other improvements to those skilled in the art without departing from the inventive concept are intended to be included in the scope of the present invention.
Claims (9)
1. An energy storage device comprising a boiler, characterized in that the energy storage device further comprises:
a water storage container; the water outlet of the boiler is connected to the water inlet of the water storage container through a pipeline;
a water mixing system; the water mixing system comprises a water inlet end and a water outlet end, the water outlet end is used for outputting heat to an external system, and the water outlet end is connected with a first temperature detection device; the water outlet of the water storage container is connected to the water inlet end of the water mixing system through a pipeline;
the water storage container return pipeline is connected to the water storage container from an external system, and is connected with a first branch pipeline which is connected to the water inlet end of the water mixing system through a first control valve, and part of return water is conveyed into the water mixing system so as to be mixed with hot water output by the water storage container;
the water storage container water return pipeline is provided with a water return blocking system for blocking water return of the water storage container, and the water return blocking position is positioned at the downstream side of a branching point formed by the branching of the first branch pipeline on the water storage container water return pipeline;
the backwater blocking system comprises:
a second control valve; the second control valve is positioned at the backwater blocking position and blocks backwater to the water storage container, so that all backwater flows back to the water mixing system;
a second temperature detecting means; the second temperature detection device is connected to a water storage container return pipeline between the second control valve and the branch point; when the second temperature detection device detects that the temperature of the backwater is higher than a preset backwater temperature value, the second control valve is controlled to close an outlet leading to the water storage container, and an outlet leading to the water mixing system is opened;
the second control valve is a three-way valve, the inlet of the three-way valve is positioned at the upstream side of the water return pipeline of the water storage container, one outlet of the three-way valve is positioned at the downstream side of the water return pipeline of the water storage container, the other outlet of the three-way valve is connected to the water inlet end of the water mixing system through a pipeline, and the return water is controlled to flow back to the water storage container or blocked by switching the outlet of the second control valve, so that the return water is conveyed to the water mixing system;
the water storage container is also connected with a boiler water return pipeline which is communicated with the boiler water inlet, a branch point is constructed on the boiler water return pipeline, the branch point is connected to the water return pipeline of the water storage container through a pipeline, and valves are arranged on two sections of pipelines which are separated from the upstream side of the branch point;
the water storage container is also connected with a supplementary heat system, and the supplementary heat system is a solar heat supply system or an air energy heat supply system, so that heat from the solar heat supply system or the air energy heat supply system is transmitted into the water storage container.
2. The energy storage device of claim 1, wherein the water mixing system comprises: the water mixing pipeline is used for mixing flow, a water inlet end and a water outlet end are formed on the water mixing pipeline, the water inlet end is connected with a water outlet of the water storage container and the downstream side of the first branch pipeline, and a water pump is further arranged on the water mixing pipeline and used for pumping the mixed water to an external system.
3. The energy storage device according to claim 1, wherein a branch point is formed on a pipeline of the water outlet of the boiler, the branch point is connected to a pipeline of the water outlet of the water storage container through a pipeline, and valves are arranged on two sections of pipelines separated from the downstream side of the branch point.
4. The energy storage device according to claim 1, wherein the supplemental heat system is a solar energy system, and an output end of the solar energy system is led into the water storage container through a pipeline and is connected with a water distributor.
5. The energy storage device according to claim 1, wherein a phase change energy storage unit is arranged in the water storage container and is used for storing heat transmitted from the outside of the water storage container and releasing the heat when heat supply is needed.
6. A control method of the energy storage device according to claim 1, comprising:
receiving a water outlet temperature signal detected by a first temperature detection device;
when the outlet water temperature is detected to exceed the preset target temperature, the first control valve is controlled to be opened, so that part of backwater enters the water mixing system;
when the temperature of the outlet water is detected to be reduced to or below the target temperature, the first control valve is controlled to be closed;
the water storage container return water pipeline is provided with a return water blocking system for blocking return water of the water storage container, and the return water blocking position is positioned on the downstream side of a branching point formed by branching of the first branch pipeline on the water storage container return water pipeline, and the method further comprises:
and when the first control valve is fully opened and the output water temperature still cannot reach below the target temperature, starting the backwater blocking system.
7. The control method according to claim 6, wherein the water storage container is further connected to a solar heating system and a heat storage variable frequency pump, the method further comprising: the heat storage variable frequency pump carries out PID adjustment according to the temperature difference between two temperature collecting points of the solar energy and the water storage container.
8. The control method according to claim 6, wherein a phase change energy storage unit is provided in the water storage container for storing heat supplied from the outside of the water storage container and releasing the heat when heat supply is required; the method further comprises the steps of: the phase-change energy storage unit stores heat through the phase change of the material in a high-temperature season, and the phase-change energy storage unit releases heat through the phase change of the material in a low-temperature season; the phase change energy storage unit stores heat by utilizing air energy and electricity of an electric boiler.
9. The control method according to claim 6, characterized in that the energy storage device further comprises an indoor temperature monitoring device and/or an outdoor temperature monitoring device, the control method further comprising:
and adjusting the target output temperature of the energy storage device according to the temperature signal monitored by the indoor temperature monitoring device and/or the outdoor temperature monitoring device.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060033164A (en) * | 2004-10-14 | 2006-04-19 | 전석영 | Operating control method of solor boiler system |
| CN2795711Y (en) * | 2005-04-13 | 2006-07-12 | 石元文 | Coal burning boiler heat supply system device |
| CN202328468U (en) * | 2011-02-14 | 2012-07-11 | 北京盈讯动力科技发展有限公司 | Sectional temperature energy-saving heat supply system |
| KR20120121486A (en) * | 2011-04-27 | 2012-11-06 | 한국건설기술연구원 | Solar Energy Heating System Integrated Control Device and Control Method using thereof |
| CN206556123U (en) * | 2017-03-02 | 2017-10-13 | 福海县众升供热有限责任公司 | A kind of heat exchange station water circulation system |
| CN206572600U (en) * | 2017-03-03 | 2017-10-20 | 西安工程大学 | Regulation heating secondary network climate compensating system |
| CN206669845U (en) * | 2017-02-28 | 2017-11-24 | 北京恒之鸿业能源科技发展有限公司 | A kind of energy-conserving intelligent heating system |
| CN108548211A (en) * | 2018-05-31 | 2018-09-18 | 江苏荣合物联网有限公司 | A kind of Intelligent warming way system |
| CN210425217U (en) * | 2019-08-13 | 2020-04-28 | 北京英翔博瑞耐火材料科技有限公司 | Energy storage device |
-
2019
- 2019-08-13 CN CN201910744317.9A patent/CN110397978B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060033164A (en) * | 2004-10-14 | 2006-04-19 | 전석영 | Operating control method of solor boiler system |
| CN2795711Y (en) * | 2005-04-13 | 2006-07-12 | 石元文 | Coal burning boiler heat supply system device |
| CN202328468U (en) * | 2011-02-14 | 2012-07-11 | 北京盈讯动力科技发展有限公司 | Sectional temperature energy-saving heat supply system |
| KR20120121486A (en) * | 2011-04-27 | 2012-11-06 | 한국건설기술연구원 | Solar Energy Heating System Integrated Control Device and Control Method using thereof |
| CN206669845U (en) * | 2017-02-28 | 2017-11-24 | 北京恒之鸿业能源科技发展有限公司 | A kind of energy-conserving intelligent heating system |
| CN206556123U (en) * | 2017-03-02 | 2017-10-13 | 福海县众升供热有限责任公司 | A kind of heat exchange station water circulation system |
| CN206572600U (en) * | 2017-03-03 | 2017-10-20 | 西安工程大学 | Regulation heating secondary network climate compensating system |
| CN108548211A (en) * | 2018-05-31 | 2018-09-18 | 江苏荣合物联网有限公司 | A kind of Intelligent warming way system |
| CN210425217U (en) * | 2019-08-13 | 2020-04-28 | 北京英翔博瑞耐火材料科技有限公司 | Energy storage device |
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