CN113503577A - Electric heating heat storage water tank system and adjusting control method thereof - Google Patents
Electric heating heat storage water tank system and adjusting control method thereof Download PDFInfo
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- CN113503577A CN113503577A CN202110786335.0A CN202110786335A CN113503577A CN 113503577 A CN113503577 A CN 113503577A CN 202110786335 A CN202110786335 A CN 202110786335A CN 113503577 A CN113503577 A CN 113503577A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 198
- 238000005485 electric heating Methods 0.000 title claims abstract description 133
- 238000005338 heat storage Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 230000005611 electricity Effects 0.000 claims abstract description 25
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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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
- F24D13/00—Electric heating systems
- F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
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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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
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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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The embodiment of the invention provides an electric heating heat storage water tank system and a regulation control method thereof. The electric heating heat storage water tank system comprises a heat storage water tank, an electric heating element and a power supply control module, wherein the heat storage water tank is provided with a water storage cavity, a water outlet pipe and a water return pipe which are communicated with the outside and the water storage cavity; the power supply control module is electrically connected with the electric heating element and is used for performing on-off control and power consumption regulation on the electric heating element. Therefore, the electric heating heat storage water tank system provided by the embodiment of the invention has the advantages of small occupied space, convenience and quickness in heating, capability of directly consuming electricity and flexibly starting and stopping and changing the consumed electricity power, thereby providing peak-shaving frequency-modulation service for a power grid.
Description
Technical Field
The invention relates to the technical field of heating equipment, in particular to an electric heating heat storage water tank system and a regulation control method thereof.
Background
In the related art, the hot water heated outside the tank is fed to the top of the hot water tank to store heat. Cold water after external heat exchange is injected into the tank from the bottom of the heat storage water tank, and a water body structure of upper hot water and lower cold water which are divided by the twill layer is naturally formed by utilizing different densities of water layers with different temperatures. The large-scale heat storage water tank firstly solves the problem of heat and power decoupling of the large-scale cogeneration unit of the thermal power plant, and the part of the large-scale heat storage water tank within the range of heat supply capacity realizes the separation of thermal power production and electric power production of the cogeneration unit, so that the cogeneration unit better adapts to the peak shaving and frequency modulation problem brought to the power grid by the future fluctuating renewable energy power generation. And moreover, the system can provide supplementary water with enough temperature and enough flow for the heat supply pipe network in the shortest time, and indirectly realizes the function of the expansion water tank of the heat supply pipe network.
However, the heat storage water tank system in the related art is complex in structure and large in occupied area, and a suitable site is difficult to find in a thermal power plant. In addition, a heating device used for heating water outside the tank is generally a steam-water shell-and-tube heat exchanger, which not only occupies a large area and has high investment cost, but also cannot well cope with load variation of peak shaving and frequency modulation of the thermal power generating unit.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides an electric heating heat storage water tank system and a regulation control method thereof.
The electric heating heat storage water tank system comprises a heat storage water tank/an electric heating element and a power supply control module, wherein the heat storage water tank is provided with a water storage cavity, a water outlet pipe and a water return pipe which are communicated with the outside and the water storage cavity; the electric heating element is arranged on the heat storage water tank and used for heating the water body in the water storage cavity; the power supply control module is electrically connected with the electric heating element and is used for performing on-off control and power consumption power regulation on the electric heating element.
Therefore, the electric heating heat storage water tank system has the advantages of small occupied space, convenience and quickness in heating, capability of directly consuming electricity and flexibly starting and stopping and changing the consumed electricity power, so that peak-shaving frequency modulation service can be provided for a power grid.
In some embodiments, the heating portion of the electrical heating element is located in an upper chamber of the reservoir chamber.
In some embodiments, the heating portion of the electrical heating element is located in a middle chamber of the reservoir chamber.
In some embodiments, the electric heating element comprises a plurality of first electric heating pipes, the first electric heating pipes are straight pipes with the length direction consistent with the horizontal direction, at least two first electric heating pipes are distributed at intervals along the height direction of the water storage cavity, and/or at least two first electric heating pipes are distributed at intervals along the circumferential direction of the water storage cavity.
In some embodiments, the electric heating element includes a plurality of second electric heating pipes, the second electric heating pipes are straight pipes with the length direction consistent with the vertical direction, the second electric heating pipes are connected with the tank cover of the hot water storage tank, and the plurality of second electric heating pipes are distributed on the tank cover at intervals.
In some embodiments, the electric heating element comprises a plurality of third electric heating pipes, the third electric heating pipes are coiled pipes, the third electric heating pipes abut against the side wall of the impoundment cavity, and the plurality of third electric heating pipes are distributed at intervals along the height direction of the impoundment cavity.
In some embodiments, the water outlet pipe is located at an upper portion of the water storage cavity, and the water return pipe is located at a lower portion of the water storage cavity.
The invention also provides a regulation control method of the electric heating heat storage water tank system, which comprises the following steps:
when the power grid connected with the power supply control module needs the peak-shaving frequency-modulation auxiliary service, adjusting the power consumption of the electric heating element by using the power supply control module so as to respond to the peak-shaving frequency-modulation auxiliary service signal of the power grid;
when the power supply control module is connected with a thermal power generating unit, the electric heating element is supplied with power by utilizing peak-regulating frequency-modulating surplus power of the thermal power generating unit;
the electrical heating element is powered with off-peak electricity during off-peak electricity periods of the night.
In some embodiments, when the heat storage water tank is used for supplying heat to a heat supply pipe network, the power supply control module is used for performing power on/off control and power consumption power adjustment on the electric heating element, so that the outlet water temperature of the outlet pipe of the heat storage water tank meets the outlet water temperature requirement of the heat supply pipe network.
In some embodiments, the power supply control module performs real-time power on-off and power consumption power adjustment on the electric heating element according to the upper and lower limit values of the water body temperature, the upper and lower limit values of the water supply temperature and/or the water return temperature and the outdoor temperature condition in the heat storage water tank.
Drawings
Fig. 1 is a schematic diagram of an electrically heated hot-water storage tank system according to an embodiment of the invention.
Fig. 2 is another schematic diagram of an electrically heated hot-water storage tank system according to an embodiment of the invention.
Reference numerals:
an electrically heated hot water storage tank system 1000;
the water storage tank comprises a heat storage water tank 100, a top wall 101, a bottom wall 102, a side wall 103, a water storage cavity 110, an upper section cavity 111, a middle section cavity 112, a water outlet pipe 120 and a water return pipe 130;
an electric heating element 200, a first electric heating tube 210, a second electric heating tube 220;
the power supply control module 300.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An electrically heated hot-water storage tank system 1000 according to an embodiment of the present invention is described below with reference to the drawings. As shown in fig. 1 and 2, an electrically heated hot-water storage tank system 1000 according to an embodiment of the present invention includes a hot-water storage tank 100, an electric heating element 200, and a power supply control module 300.
The hot water storage tank 100 is provided with a water storage chamber 110, and a water outlet pipe 120 and a water return pipe 130 which communicate the outside with the water storage chamber 110. That is, the water outlet pipe 120 may communicate the outside with the reservoir chamber 110, and the water return pipe 130 may communicate the outside with the reservoir chamber 110. For example, the water outlet pipe 120 is located above the water return pipe 130, the hot water in the water storage cavity 110 is delivered to the outside through the water outlet pipe 120, and the water return pipe 130 can deliver the outside cold water to the water storage cavity 110 to fill the water storage cavity 110.
An electric heating element 200 is mounted to the hot water storage tank 100 for heating the body of water in the water storage chamber 110. For example, at least a portion of the electric heating element 200 is located in the hot water storage tank 100 to contact the water body of the water storage cavity 110 for heat transfer, and when the electric heating element 200 is powered on, the electric heating element 200 generates heat and transfers the heat to the water body of the water storage cavity 110, thereby heating the water body in the water storage cavity 110.
The power supply control module 300 is electrically connected to the electric heating element 200, and is used for performing on-off control and power consumption adjustment of the electric heating element 200. That is, the power control module 300 may control whether the electrical heating element 200 is energized, i.e., whether the body of water within the reservoir 110 is heated. And the power supply control module 300 can control the power consumption of the electric heating element 200, so that the electric heating hot-water storage tank system 1000 according to the embodiment of the present invention selects the optimal economical regulation control mode to operate according to different operation time periods. For example, when the power supply control module 300 is connected to the power grid of the thermal power generating unit and the peak-and-frequency-modulation auxiliary service is required in this period, the power consumption of the electric heating element 200 is controlled to change by using the power supply control module 300, so that the power consumption cost is reduced.
According to the electric heating heat storage water tank system 1000 of the embodiment of the invention, the electric heating element 200 is installed on the heat storage water tank 100, so that the heat storage water tank 100 can directly heat the water body by using electric energy, and the water body in the heat storage water tank 100 can be heated more conveniently and quickly. And the electric heating element 200 and the heat-storage water tank 100 may be integrally provided, so that the occupied space of the heating apparatus of the heat-storage water tank 100 is reduced, thereby facilitating the design and installation of the heat-storage water tank 100. The power supply control module 300 is electrically connected to the electric heating element 200, and facilitates power on/off control and power consumption adjustment of the electric heating element 200. Therefore, the electric heating heat storage water tank system 1000 according to the embodiment of the invention can be used as an external peak and frequency modulation device of a thermal power generating unit, can be rapidly adjusted according to external load changes of the thermal power generating unit, reduces the overall cost of the external peak and frequency modulation device, and simultaneously solves the influence of lifting loads on the service life of the unit and operators.
Therefore, the electric heating heat storage water tank system 1000 according to the embodiment of the invention has the advantages of small occupied space, convenience and quickness in heating, capability of directly consuming electricity and flexibly starting and stopping and changing consumed electricity power, thereby providing peak-shaving frequency modulation service for a power grid.
As shown in FIG. 1, in some embodiments, the heating portion of the electric heating element 200 is located in the upper chamber 111 of the chamber 110. The upper chamber 111 is located on the upper part of the water storage chamber 110, and the heating part of the electric heating element 200 is arranged on the upper part of the water storage chamber 110, so that the water on the upper part of the water storage chamber 110 is rapidly heated by the electric heating element 200 to meet the outlet water temperature requirement of the heat supply pipe network. The up-down direction is the direction indicated by the arrow a in fig. 1.
As shown in fig. 1, in some embodiments, the electric heating element 200 includes a plurality of second electric heating pipes 220, and the second electric heating pipes 220 are straight pipes whose length directions coincide with the vertical direction. That is, the second electric heating pipe 220 can heat the water in the reservoir chamber 110. The second electric-heating pipe 220 is connected to a lid of the hot water storage tank 100, the lid of the hot water storage tank 100 constituting the top wall 101 of the hot water storage tank 100, and the second electric-heating pipe 220 extends in a vertical direction, i.e., an up-down direction. Therefore, the second electric-heating pipe 220 may be mounted on the lid of the hot-water storage tank 100 and the heating portion of the second electric-heating pipe 220 protrudes into the water storage chamber 110 from above. So that the heating portion of the second electric-heating pipe 220 is located in the upper chamber 111 of the reservoir chamber 110 to rapidly heat the body of water in the upper portion of the reservoir chamber 110. A plurality of second electric-heating pipes 220 are distributed on the cover at intervals so that the second electric-heating pipes 220 can rapidly and uniformly heat the water body at the upper part of the reservoir chamber 110.
As shown in FIG. 2, in some embodiments, the heating portion of the electric heating element 200 is located in the middle chamber 112 of the reservoir chamber 110. The middle chamber 112 is located in the middle of the reservoir 110, and the height of the middle chamber 112 is lower than that of the upper chamber 111. The heating part of the electric heating element 200 is arranged in the middle chamber 112 of the water storage cavity 110, so that the electric heating element 200 is more convenient to install, the water in the water storage cavity 110 is more uniformly heated, and the water is heated in the middle of the water storage cavity 110 and then rises to the upper part of the water storage cavity 110 and is conveyed to the outside.
In some embodiments, the electric heating element 200 comprises a first electric-heating tube 210, the first electric-heating tube 210 being a straight tube whose length direction coincides with the horizontal direction. That is, the first electric-heating pipe 210 can heat the water in the reservoir chamber 110. The first electric-heating pipe 210 extends in a horizontal direction, so that the first electric-heating pipe 210 can be provided on the side wall 103 of the hot water storage tank 100 and the heating portion of the first electric-heating pipe 210 extends into the reservoir chamber 110 from the side. The side wall 103 of the hot water storage tank 100 is large in space, and the heating portion of the first electric-heating pipe 210 may be located in at least one of the middle-stage chamber 112 and the upper-stage chamber 111, thereby facilitating the installation of the first electric-heating pipe 210.
At least two first electric heating pipes 210 are distributed at intervals in the height direction of the impoundment chamber 110 and/or at least two first electric heating pipes 210 are distributed at intervals in the circumferential direction of the impoundment chamber 110.
As shown in fig. 2, a plurality of first electric-heating pipes 210 are distributed at intervals along the height direction of the reservoir chamber 110. The height direction of the reservoir chamber 110 is the up-down direction. That is, a plurality of first electric-heating pipes 210 distributed at intervals in the up-down direction can heat the water in the reservoir chamber 110. For example, four first electric-heating pipes 210 are provided, and the four first electric-heating pipes 210 are spaced apart from each other in the vertical direction on the side wall 103 of the hot water storage tank 100.
It will be appreciated that in other embodiments, a plurality of first electric heating pipes 210 are spaced circumferentially along the accumulator chamber 110. That is, a plurality of first electric-heating pipes 210 distributed at intervals along the circumferential direction of the reservoir chamber 110 can heat the water body in the reservoir chamber 110. For example, six first electric-heating pipes 210 are provided, six first electric-heating pipes 210 are on the same horizontal plane, and the six first electric-heating pipes 210 are distributed on the side wall 103 of the hot-water storage tank 100 at intervals along the circumferential direction of the water storage chamber 110.
In some embodiments, a plurality of first electric heating pipes 210 are spaced apart along the height of the accumulator chamber 110, and a plurality of first electric heating pipes 210 are spaced apart along the circumference of the accumulator chamber 110. Namely, a plurality of first electric heating pipes 210 distributed at intervals along the height direction of the reservoir cavity 110 and a plurality of first electric heating pipes 210 distributed at intervals along the circumferential direction of the reservoir cavity 110 heat the water body in the reservoir cavity 110.
In some embodiments, the electric heating element 200 comprises a plurality of third electric heating tubes along the accumulator chamber 110, the third electric heating tubes being coils. For example, the third electric-heating tube may be arc-shaped, ring-shaped, or spiral-shaped. The third electric heating pipe abuts against the side wall 103 of the reservoir chamber 110, and specifically, the heating part of the third electric heating pipe is attached to the inner wall surface of the side wall 103 of the reservoir chamber 110, thereby facilitating the fixation of the third electric heating pipe. The third electric heating pipes are distributed at intervals along the height direction of the water storage cavity 110, so that the third electric heating pipes can efficiently and uniformly heat the water in the water storage cavity 110.
In some embodiments, the outlet pipe 120 is adjacent the top wall 101 of the reservoir chamber 110. That is, the outlet pipe 120 communicates with the upper portion of the reservoir chamber 110. For example, the inlet of the outlet pipe 120 is located below the level of the reservoir chamber 110 and the inlet of the outlet pipe 120 is adjacent the level of the reservoir chamber 110. The higher the height in the reservoir chamber 110, the higher the temperature of the water, and therefore the outlet pipe 120 is located at the upper part of the reservoir chamber 110 so that the water body reaching the outlet temperature can easily flow out of the outlet pipe 120. The return pipe 130 is adjacent the bottom wall 102 of the reservoir chamber 110. That is, the return pipe 130 communicates with the lower portion of the reservoir chamber 110. Therefore, the water body entering the water storage cavity 110 from the water return pipe 130 is firstly positioned at the lower part of the water storage cavity 110, thereby facilitating the heat exchange of cold water, and hot water to be sent out from the upper part of the water storage cavity 110 is not influenced, so that the heat storage water tank 100 is more energy-saving.
The invention also provides a regulation and control method of the electric heating heat storage water tank system 1000, which comprises the following steps.
When the peak shaving auxiliary service is required during the time period of the power grid to which the power supply control module 300 is connected, the power consumption of the electric heating element 200 is adjusted by the power supply control module 300 in response to the peak shaving auxiliary service signal of the power grid.
Therefore, according to the change of the peak and valley of the power grid or the change of the external load, the electric control module 300 can control the start and stop of the electric heating element 200 or the electric control module 300 can adjust the power consumption of the electric heating element 200, so as to realize the peak and frequency adjustment of the power grid, and further reduce the electricity consumption cost of the electric heating hot water storage tank system 1000.
When the power supply control module 300 is connected with a thermal power generating unit, the electrical heating element 200 is supplied with power by using the peak-shaving frequency-modulation surplus power of the thermal power generating unit. The electricity consumption cost of the electrical heating hot water storage tank system 1000 can be reduced by supplying electricity to the electrical heating element 200 by using the peak-shaving frequency-modulation surplus electricity of the thermal power generating unit (in the limit, the electrical heating element 200 has a part of the power grid peak-shaving frequency-modulation auxiliary service income per degree of electricity consumption, namely electricity consumption earning).
The electrical heating element 200 is powered with the off-peak electricity during the off-peak electricity period of the night. The electricity price of the off-peak electricity is low in the off-peak electricity period at night. Therefore, supplying the electric heating element 200 with the off-peak electricity during the off-peak electricity period at night may reduce the electricity cost of the electrically heated hot water storage tank system 1000.
In some embodiments, when the thermal storage water tank 100 is used to supply heat to a heat supply pipe network, the power supply control module 300 is used to perform power on/off control and power consumption adjustment on the electric heating element 200, so as to ensure that the outlet water temperature of the outlet pipe 120 of the thermal storage water tank 100 meets the outlet water temperature requirement of the heat supply pipe network. That is, when the thermal storage water tank 100 is used for supplying heat to the heat supply network, the electric control module 300 can control the on/off and power consumption efficiency of the electric heating element 200, but it is required to ensure that the outlet water temperature of the outlet water pipe 120 meets the outlet water temperature requirement of the heat supply network.
In some embodiments, the power supply control module 300 performs real-time power on/off and power consumption adjustment on the electric heating element 200 according to the upper and lower limit values of the water temperature in the thermal storage water tank 100, the upper and lower limit values of the water supply temperature and/or the water return temperature, and the outdoor temperature condition. So as to reduce the energy consumption of the electrically heated hot-water storage tank system 1000 and to reduce the electricity consumption cost of the electrically heated hot-water storage tank system 1000.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An electrically heated hot water storage tank system, comprising:
the heat storage water tank is provided with a water storage cavity, a water outlet pipe and a water return pipe which are communicated with the outside and the water storage cavity;
the electric heating element is arranged on the heat storage water tank and used for heating the water body in the water storage cavity; and
the power supply control module is electrically connected with the electric heating element and is used for carrying out on-off control and power consumption regulation on the electric heating element.
2. The electrically heated hot water storage tank system of claim 1 wherein the heating portion of the electrical heating element is located in an upper chamber of the water storage chamber.
3. The electrically heated hot water storage tank system of claim 1 wherein the heating portion of the electrical heating element is located in a middle compartment of the water storage chamber.
4. The electrically heated hot-water storage tank system according to claim 2 or 3, wherein the electric heating element comprises a plurality of first electric heating pipes, the first electric heating pipes are straight pipes with the length direction consistent with the horizontal direction, at least two first electric heating pipes are distributed at intervals along the height direction of the water storage cavity, and/or at least two first electric heating pipes are distributed at intervals along the circumferential direction of the water storage cavity.
5. The electrically heated hot-water storage tank system according to claim 2, wherein said electric heating element comprises a plurality of second electric heating pipes, said second electric heating pipes are straight pipes with the length direction consistent with the vertical direction, said second electric heating pipes are connected with a tank cover of said hot-water storage tank, and a plurality of said second electric heating pipes are distributed on said tank cover at intervals.
6. An electrically heated hot-water storage tank system according to claim 2 or 3, characterised in that the electric heating element comprises a plurality of third electric heating pipes, which are coiled pipes, which rest against the side walls of the water storage chamber, which are spaced apart in the height direction of the water storage chamber.
7. The electrically heated hot water storage tank system of claim 1 wherein the outlet pipe is located at an upper portion of the water storage chamber and the return pipe is located at a lower portion of the water storage chamber.
8. A regulation control method of an electric heating heat storage water tank system is characterized by comprising the following steps:
when the power grid connected with the power supply control module needs the peak-shaving frequency-modulation auxiliary service, adjusting the power consumption of the electric heating element by using the power supply control module so as to respond to the peak-shaving frequency-modulation auxiliary service signal of the power grid;
when the power supply control module is connected with a thermal power generating unit, the electric heating element is supplied with power by utilizing peak-regulating frequency-modulating surplus power of the thermal power generating unit;
the electrical heating element is powered with off-peak electricity during off-peak electricity periods of the night.
9. The regulation and control method of the electrical heating hot water storage tank system according to claim 8, wherein when the hot water storage tank is used for supplying heat to the heat supply network, the power supply control module is used for performing power on/off control and power consumption regulation on the electrical heating element, so as to ensure that the outlet water temperature of the outlet pipe of the hot water storage tank meets the outlet water temperature requirement of the heat supply network.
10. The regulation and control method of the electrical heating hot water storage tank system according to claim 8 or 9, wherein the power supply control module performs real-time power on/off and power consumption regulation on the electrical heating element according to the upper and lower limit values of the water temperature, the upper and lower limit values of the water supply temperature and/or the water return temperature, and the outdoor temperature condition in the hot water storage tank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115468301A (en) * | 2022-10-26 | 2022-12-13 | 中国核动力研究设计院 | Generating set energy consumption device |
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Application publication date: 20211015 |