CN219714120U - Pressure stabilizing device suitable for high-capacity heat storage water tank - Google Patents
Pressure stabilizing device suitable for high-capacity heat storage water tank Download PDFInfo
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- CN219714120U CN219714120U CN202320831821.4U CN202320831821U CN219714120U CN 219714120 U CN219714120 U CN 219714120U CN 202320831821 U CN202320831821 U CN 202320831821U CN 219714120 U CN219714120 U CN 219714120U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000005338 heat storage Methods 0.000 title claims abstract description 65
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 21
- 238000005482 strain hardening Methods 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 8
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 82
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 13
- 238000009825 accumulation Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The embodiment of the utility model provides a pressure stabilizing device suitable for a high-capacity hot water storage tank, which comprises a heat storage body, wherein the inside of the heat storage body comprises a lower chamber and an upper chamber which are respectively used for accommodating cold working medium and hot working medium and are mutually communicated; the heat exchange pressure stabilizing assembly comprises a heat exchange assembly and a condenser assembly; the lower chamber and the upper chamber are respectively connected with the heat exchange assembly through a first pipeline group and a second pipeline group in a heat exchange manner; under different working conditions, the first pipeline group is used for inputting or outputting cold working media to the lower cavity; the second pipeline group inputs or outputs a hot working medium to the upper cavity; the lower chamber and the upper chamber are in heat exchange connection through the condenser assembly, and are used for controlling the condensation speed of steam in the upper chamber by exchanging heat between the cold working medium of the lower chamber and steam in the upper chamber in the condenser assembly. The pressure is regulated by controlling the steam density at the upper part of the heat storage body, so that the pressure fluctuation caused by flow deviation of high-temperature water and low-temperature water can be effectively eliminated, the workload of manual intervention is reduced, and the pressure in the heat storage body is safe and stable.
Description
Technical Field
The utility model relates to the technical field of water heat storage, in particular to a voltage stabilizing device suitable for a high-capacity heat storage water tank.
Background
The heat storage technology can solve the problem of mismatching of the thermal energy preparation and use processes in space and time, is a very important technology for improving the energy utilization efficiency, can be generally divided into three types of sensible heat, latent heat, thermochemical heat storage and the like, sensible heat storage media are represented by water, heat conduction oil, molten salt, concrete, gravel and the like, latent heat storage media are represented by steam, phase change materials and the like, and thermochemical heat storage media are mainly magnesium oxide, ferric oxide, metal hydride and other substances capable of carrying out heat absorption/heat release chemical reactions. At present, sensible heat and latent heat storage technologies are mature in development, and thermochemical heat storage technologies are in the early stage of commercial application.
The water heat storage technology is a low-cost pollution-free sensible heat storage technology, is widely applied to solar water heater systems, utilizes the temperature difference and the characteristic of large specific heat capacity of water to store heat, and generally has the heat storage temperature not exceeding 95 ℃ because the saturation temperature of water is lower. The large-capacity water heat storage technology is to store hot water by constructing a large storage tank, the volume is usually in the range of 5000-20000m < 3 >, only one heat storage body is used, and the two heat storage bodies are blocked from being mixed by an inclined temperature layer between high-temperature water and low-temperature water, so that the heat storage technology is widely applied to cogeneration units and garbage power stations, the stored heat is mainly used for building heating, the thermoelectric decoupling capacity of the units can be improved, and the electric load adjusting range of the units is enlarged. Because there is only one large-capacity heat storage body in the system, when the temperature of the internal water is changed as a whole, the pressure at the upper part of the heat storage body is changed correspondingly, the pressure is required to be regulated continuously to be stable, the safety of the tank body is ensured, the conventional nitrogen sealing system is required to continuously prepare nitrogen and intermittently emit steam outwards, the heat loss is high, and the operation cost is high.
Disclosure of Invention
Aiming at the prior art, at least one technical problem is solved, and the embodiment of the utility model provides the pressure stabilizing device suitable for the high-capacity heat storage body, which can effectively eliminate pressure fluctuation caused by flow deviation of high-temperature water and low-temperature water by controlling the steam density at the upper part of the heat storage body, reduce the workload of manual intervention, ensure that the pressure in the heat storage body is safe and stable, has the advantages of low heat loss, low running cost and few running parts, and can be widely applied to a high-capacity heat storage water tank.
The embodiment of the utility model provides a voltage stabilizing device suitable for a high-capacity hot water storage tank, which comprises
The heat storage body comprises a lower chamber and an upper chamber which are respectively used for accommodating cold working medium and hot working medium and are mutually communicated; and
the heat exchange pressure stabilizing assembly comprises a heat exchange assembly and a condenser assembly; the lower chamber and the upper chamber are respectively connected with the heat exchange assembly through a first pipeline group and a second pipeline group in a heat exchange manner; under different working conditions, the first pipeline group is used for inputting or outputting cold working media to the lower chamber; the second pipeline group inputs or outputs a hot working medium to the upper chamber; the lower chamber and the upper chamber are in heat exchange connection through the condenser assembly, and are used for controlling the condensation speed of steam in the upper chamber by exchanging heat between cold working medium of the lower chamber and steam in the upper chamber in the condenser assembly.
In some embodiments, the first tubing set includes a first outlet tubing and a first return tubing; the first liquid outlet pipeline is respectively connected with the lower cavity and the cold side inlet of the heat exchange assembly and is used for conveying cold working medium in the lower cavity to the cold side of the heat exchange assembly; the first liquid outlet pipeline is connected in parallel to the first liquid return pipeline, and the first liquid return pipeline is used for shunting backwater of the low-temperature heat network which is introduced into the cold side of the heat exchange assembly and introducing the backwater into the lower cavity.
In some embodiments, the first liquid outlet pipeline comprises a second valve, a first heat storage water pump and a third valve which are sequentially arranged according to the flowing direction of the cold working medium; a fourth valve is arranged on the first liquid return pipeline; and two ends of the fourth valve are respectively connected with the inlet of the second valve and the outlet of the third valve.
In some embodiments, the second tubing set includes a second outlet tubing and a second return tubing; the second liquid outlet pipeline is respectively connected with the upper chamber and the hot side outlet of the heat exchange assembly and is used for conveying the hot working medium in the upper chamber to the hot side outlet of the heat exchange assembly; the second liquid outlet pipeline is connected in parallel to the second liquid return pipeline, and the second liquid return pipeline is used for shunting hot side water outlet of the heat exchange assembly and introducing the hot side water outlet into the upper cavity.
In some embodiments, the second liquid outlet pipeline comprises a fifth valve, a second heat storage water pump and a sixth valve which are sequentially arranged according to the flowing direction of the hot working medium; a first valve is arranged on the second liquid return pipeline; and two ends of the first valve are respectively connected with the inlet of the fifth valve and the outlet of the sixth valve.
In some embodiments, the second liquid outlet line and the first liquid outlet line share a single heat storage water pump.
In some embodiments, the heat exchange assembly includes a heating pump and a heating grid heater; the heating pump boosts the backwater of the low-temperature heat supply network and then leads the backwater to the cold side of the heat supply network heater; and the hot side of the heat supply network heater is filled with steam.
In some embodiments, the condenser assembly comprises a condensate pump and a condenser; the lower chamber, the condensate pump, the cold side of the condenser and the upper chamber are sequentially connected to form a condensation passage; the steam in the upper chamber passes through the hot side of the condenser and the exhaust chamber and returns to the upper chamber.
In some embodiments, the exhaust chamber is in communication with an electrically controlled valve that intermittently opens for exhausting non-condensable gases from the upper chamber.
In some embodiments, a pressure measurement point is disposed on the upper chamber for measuring the pressure within the upper chamber.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a pressure stabilizing device suitable for a high-capacity hot-water storage tank according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a pressure stabilizing device for high-capacity water storage according to another embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a pressure stabilizing device suitable for a high-capacity hot-water storage tank according to another embodiment of the present utility model;
fig. 4 is a schematic structural diagram of a pressure stabilizing device suitable for a high-capacity hot-water storage tank according to an embodiment of the present utility model;
in the figure, 1, a heat storage body; 2. a heat storage water pump; 21. a first heat storage water pump; 22. a second heat storage water pump; 3. a heating pump; 4. a heating network heater; 5. a condenser; 6. an exhaust chamber; 7. a condensate pump; 8. a first valve; 9. a second valve; 10. a third valve; 11. a fourth valve; 12. a fifth valve; 13. a sixth valve; 14. an electric control valve; 15. and (5) measuring a pressure point.
Detailed Description
In order to make the present utility model better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, but not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
In the accompanying drawings, there is shown a schematic structural diagram in accordance with a disclosed embodiment of the utility model. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
The embodiment of the utility model is described below with reference to fig. 1, and specifically, the embodiment of the utility model provides a pressure stabilizing device suitable for a high-capacity hot water storage tank, which comprises a heat storage body 1 and a heat exchange pressure stabilizing component; the heat storage body 1 has a certain volume and can contain working media, and because the volume of the heat storage body 1 is larger, the working media at different positions in the up-down direction are different in temperature, so that the heat storage body 1 can be divided into a lower chamber and an upper chamber which are respectively used for containing cold working media and hot working media, no barrier exists between the lower chamber and the upper chamber, the working media between the two chambers can circulate mutually, but the working media circulation quantity between the two chambers is less, and generally, the temperature of the hot working media in the upper chamber is generally higher than the temperature of the cold working media in the lower chamber.
The heat exchange pressure stabilizing assembly in the embodiment comprises a heat exchange assembly and a condenser 5 assembly; the lower chamber and the upper chamber are respectively connected with the heat exchange assembly through a first pipeline group and a second pipeline group in a heat exchange manner; the lower chamber is provided with a through hole for inputting and outputting cold working medium, and the upper chamber is provided with a through hole for inputting and outputting hot working medium; in addition, the upper chamber is also provided with a through hole for inputting and outputting steam, and in the process of adjusting the pressure of the upper chamber, the through hole for inputting steam can also input external air, wherein a pipeline connected with the external air through the through hole for inputting steam is provided with an electromagnetic valve, and non-condensable gas in the upper chamber can be intermittently discharged.
In this embodiment, the lower cavity is connected with the heat exchange assembly through the first pipeline group in a heat exchange manner, and the upper cavity is connected with the heat exchange assembly through the second pipeline group in a heat exchange manner, so that the input and output of the cold working medium and the hot working medium can be realized under different heat storage or heat release working conditions of the heat storage body 1, and the heat storage and release can be realized. In addition, in the embodiment, the lower chamber and the upper chamber are in heat exchange connection through the condenser 5 assembly, in other words, the cold working medium in the lower chamber and the steam in the upper chamber can exchange heat in the condenser 5 assembly, so that the steam above the liquid level of the upper chamber is cooled by the cold working medium, and the density of the steam is reduced.
In the heat storage process in this embodiment, the following steps are adopted: the low-temperature water of the lower chamber enters the cold side of the heat exchange assembly through the first pipeline group, and meanwhile, the cold side of the heat exchange assembly is introduced into a low-temperature heat network for backwater; during this process the hot side of the heat exchange assembly is steamed. After heat exchange, one part of high-temperature water at the cold side outlet of the heat supply network heater 4 is delivered to a user for heat supply, and the other part of the high-temperature water enters the upper chamber through the second pipeline group for storage. Along with the progress of heat accumulation process, the whole temperature of working medium in heat accumulation body 1 risees, and the volume of medium of the same quality grow, leads to the pressure that the liquid level was above in heat accumulation body 1 to rise, lets in the cold side of condenser subassembly with the low temperature water of lower cavity this moment in, finally lets in the cavity of going up for the steam above the cooling cavity liquid level, reduction steam density. In the process, steam above the liquid level of the upper chamber is introduced into the hot side of the condenser assembly, and after the steam is condensed, the steam flows back to the upper chamber, so that the space pressure is reduced after the steam at the upper part of the upper chamber is effectively cooled. When the upper chamber has non-condensable gas, the electromagnetic valve is arranged on the pipeline connected with the outside air through the steam input port of the upper chamber, and the non-condensable gas of the upper chamber is discharged, so that the space pressure is reduced after the steam on the upper part of the upper chamber is effectively cooled.
In the exothermic process of this example: and part of the low-temperature heat-exchange-component backwater enters the lower cavity through the first pipeline group, the other part of the low-temperature heat-exchange-component backwater directly enters the cold-side inlet of the heat exchange component, steam is introduced into the hot side of the heat exchange component to heat the low-temperature heat-exchange-component backwater, high-temperature water at the cold-side outlet of the heat exchange component is directly conveyed to a user for heat supply, and high-temperature water in the upper cavity is mixed with the high-temperature water at the cold-side outlet of the heat exchange component through the first pipeline group and conveyed to the user for heat supply. Along with the progress of exothermic process, the whole temperature in the heat accumulation body 1 reduces, and the volume of water of the same quality can become less, leads to the pressure reduction more than the liquid level in the heat accumulation body 1, because upper portion of the cavity is 95 ℃ or so high temperature water, when the pressure reduction more than the liquid level of heat accumulation body 1, the steam density in the space can be improved by automatic evaporation of high temperature water, generally need not to start the condenser subassembly, when the pressure of upper cavity obviously reduces, can let in the air in the upper cavity and guarantee that the pressure is steady. Therefore, in this embodiment, the condensation speed of the steam in the upper cavity of the heat storage body 1 is controlled to adjust the steam pressure in the heat storage body 1, so as to control the space pressure of the heat storage body 1, avoid the steam leakage and have low operation cost.
In some embodiments, the first tubing set includes a first outlet tubing and a first return tubing; the first liquid outlet pipeline is respectively connected with the lower cavity and the cold side inlet of the heat exchange assembly and is used for conveying cold working medium in the lower cavity to the cold side of the heat exchange assembly; the first liquid outlet pipeline is connected in parallel to the first liquid return pipeline, and the first liquid return pipeline is used for shunting the backwater of the low-temperature heat network which is introduced into the cold side of the heat exchange assembly and introducing the backwater into the lower cavity.
The first pipeline group comprises a first liquid outlet pipeline and a first liquid return pipeline; the two ends of the first liquid outlet pipeline are respectively connected with the lower cavity and the cold side inlet of the heat exchange assembly and are used for conveying cold working media in the lower cavity to the cold side inlet of the heat exchange assembly. In other words, the input end of the first liquid outlet pipeline is connected with the lower chamber, the cold working medium in the lower chamber can be introduced into the first liquid outlet pipeline, the output end of the first liquid outlet pipeline is connected with the cold side inlet of the heat exchange assembly, the cold working medium in the lower chamber enters the cold side of the heat exchange assembly, and the heat exchange between the cold working medium and the working medium on the hot side of the heat exchange assembly is realized. Meanwhile, in the embodiment, the first liquid outlet pipeline is connected in parallel to the first liquid return pipeline, namely, the first liquid return pipeline shunts the low-temperature heat-net backwater introduced at the cold side inlet of the heat exchange assembly, and the low-temperature heat-net backwater part at the cold side inlet of the heat exchange assembly is input into the lower chamber through the first liquid return pipeline.
As shown in fig. 1, according to the flowing direction of the cold working medium, a second valve 9, a first heat storage water pump 21 and a third valve 10 are sequentially arranged on the first liquid outlet pipeline; a fourth valve 11 is arranged on the first liquid return pipeline; the inlet of the fourth valve 11 is connected to the outlet of the third valve 10, and the outlet of the fourth valve 11 is connected to the inlet of the second valve 9.
In some embodiments, the second tubing set includes a second outlet tubing and a second return tubing; the second liquid outlet pipeline is respectively connected with the upper chamber and the hot side outlet of the heat exchange assembly and is used for conveying the hot working medium in the upper chamber to the hot side outlet of the heat exchange assembly; the second liquid outlet pipeline is connected in parallel to the second liquid return pipeline, and the second liquid return pipeline is used for shunting the hot side water outlet of the heat exchange assembly and introducing the hot side water outlet into the upper cavity.
The second pipeline group comprises a second liquid outlet pipeline and a second liquid return pipeline; and two ends of the second liquid outlet pipeline are respectively connected with the upper cavity and the cold side outlet of the heat exchange assembly and are used for conveying the hot working medium in the upper cavity to the cold side outlet of the heat exchange assembly. In other words, the input end of the second liquid outlet pipeline is connected with the upper cavity, the hot working medium in the upper cavity can be introduced into the second liquid outlet pipeline, the output end of the second liquid outlet pipeline is connected with the cold side outlet of the heat exchange assembly, the hot working medium in the upper cavity enters the cold side outlet of the heat exchange assembly, and the hot working medium and the working medium at the cold side outlet of the heat exchange assembly are output together to a user for heat supply. Meanwhile, in the embodiment, the second liquid outlet pipeline is connected in parallel with the second liquid return pipeline, namely, the low-temperature heat-exchange heat-net backwater output at the cold side outlet of the heat exchange assembly is partially input into the upper cavity through the second liquid return pipeline.
As shown in fig. 1, according to the flow direction of the hot working medium, a fifth valve 12, a second heat storage water pump 22 and a sixth valve 13 are sequentially arranged on the second liquid outlet pipeline; a first valve 8 is arranged on the second liquid return pipeline; the inlet of the first valve 8 is connected to the outlet of the sixth valve 13 and the outlet of the first valve 8 is connected to the inlet of the fifth valve 12.
In some embodiments, the second outlet line and the first outlet line share one heat storage water pump 2.
In this embodiment, the second liquid outlet pipeline and the first liquid outlet pipeline share one heat storage water pump 2 as shown in fig. 2, that is, the second heat storage water pump 22 and the first heat storage water pump 21 may be alternatively used, that is, the pipelines provided with the second heat storage water pump 22 and the first heat storage water pump 21 are combined, and the heat storage water pump 2 is provided on the combined pipelines, and the heat storage water pump 2 is started by opening the fifth valve 12 and the sixth valve 13 and the second valve 9 and the third valve 10, so as to achieve the purpose of pumping cold working medium or hot working medium under different working conditions. In this embodiment, the second liquid outlet pipeline and the first liquid outlet pipeline share one heat storage water pump 2, so that the setting of pump components and the connection of pipelines can be reduced, the control and management processes are convenient, and the operation components are fewer and the operation cost is low.
In some embodiments, the heat exchange assembly includes a heating pump 3 and a heating grid heater 4; the heating pump 3 boosts the backwater of the low-temperature heat supply network and then leads the backwater to the cold side of the heat supply network heater 4; the hot side of the grid heater 4 is steamed.
The heat exchange assembly comprises a heating pump 3 and a heat supply network heater 4, wherein an outlet of the heating pump 3 is connected with a cold side inlet of the heat supply network heater 4, and low-temperature heat supply network backwater enters the cold side of the heat supply network heater 4 after being boosted by the heating pump 3. It can be known that the heat supply network heater 4 includes a cold side and a hot side, where the cold side and the hot side are respectively fed with media with different temperatures for heat exchange, and in this embodiment, the low-temperature heat supply network backwater is boosted by the heating pump 3 and then enters the cold side of the heat supply network heater 4, and exchanges heat with steam on the hot side of the heat supply network heater 4, so as to achieve the effect of heating the low-temperature heat supply network backwater.
In some embodiments, the condenser 5 assembly comprises a condensate pump 7 and a condenser 5; wherein the lower chamber, the condensate pump 7, the cold side of the condenser 5 and the upper chamber are sequentially connected to form a condensation passage; the steam in the upper chamber passes through the hot side of the condenser 5, the exhaust chamber 6 and back into the upper chamber.
Wherein the condenser 5 assembly comprises a condensate pump 7 and a condenser 5; wherein the lower chamber, the condensate pump 7, the cold side of the condenser 5 and the upper chamber are sequentially connected to form a condensation passage; it can be seen that the cold working medium in the lower chamber is introduced into the cold side of the condenser 5 after passing through the condensate pump 7, and is introduced into the upper chamber after being heated after heat exchange. In the process the steam in the upper chamber passes the hot side of the condenser 5, the exhaust chamber 6 and back into the upper chamber as shown in figure 4.
Preferably, the upper chamber is provided with a pressure measuring point 15 as shown in fig. 3-4 for measuring the pressure in the upper chamber. According to the embodiment, the flow rate of the condensate pump 7 can be adjusted according to the data change of the pressure measuring point 15, part of low-temperature water in the lower chamber is conveyed to the condenser 5 for cooling steam above the liquid level of the upper chamber, reducing the density of the steam, and the steam is collected in the exhaust chamber 6 and then flows back to the top of the upper chamber after being condensed.
In some embodiments, the exhaust chamber 6 is in communication with an electrically operated valve 14 that intermittently opens for exhausting non-condensable gases from the upper chamber.
Wherein, as shown in fig. 4, the electric control valve 14 is communicated with the exhaust chamber 6, when the non-condensable gas exists in the upper chamber, the non-condensable gas is discharged through the intermittent opening of the electric control valve 14 at the upper part of the exhaust chamber 6; after the upper vapor in the upper chamber has been effectively cooled, the space pressure is reduced.
The pressure stabilizing device is suitable for a large-capacity hot water storage tank, and operates according to the following method:
in the heat storage process: opening the first valve 8, the second valve 9 and the third valve 10, and closing the fourth valve 11, the fifth valve 12 and the sixth valve 13; the low-temperature heat supply network backwater is boosted by the heating pump 3 and then enters the cold side inlet of the heat supply network heater 4, the low-temperature water in the lower chamber is boosted by the heat storage water pump 2 on the first liquid outlet pipeline and then enters the cold side of the heat supply network heater 4, and the hot side of the heat supply network heater 4 is filled with steam for heating the low-temperature heat supply network backwater and the low-temperature water in the lower chamber. After heat exchange, one part of high-temperature water at the cold side outlet of the heat supply network heater 4 is delivered to a user for heat supply, and the other part of the high-temperature water enters the upper chamber through the first valve 8 for storage through the second liquid return pipeline.
Along with the progress of heat accumulation process, the whole temperature of working medium in heat accumulation body 1 increases, and the volume of medium of the same quality grow, leads to the pressure of heat accumulation body 1 above the liquid level to rise, adjusts the flow of condensate pump 7 according to the data change of pressure measurement station 15 this moment, and the cold side of entering condenser 5 is passed through to partly low-temperature water in the lower cavity and is finally let in the upper cavity in the cold side of condenser 5 for the steam above the cooling upper cavity liquid level, reduction steam density. During the process, the steam above the liquid level of the upper chamber is introduced into the hot side of the condenser 5, and flows back to the upper chamber after being collected in the exhaust chamber 6 after being condensed; when the upper chamber has non-condensable gas, the non-condensable gas is discharged through the intermittent opening of the electric control valve 14 at the upper part of the exhaust chamber 6; after the upper part of the upper chamber is effectively cooled, the space pressure is reduced.
During the exothermic process: closing the first valve 8, the second valve 9 and the third valve 10, and opening the fourth valve 11, the fifth valve 12 and the sixth valve 13; after the pressure of the low-temperature heat supply network backwater is increased by the heating pump 3, one part of backwater enters the lower cavity through the first liquid return pipeline and passes through the fourth valve 11, the other part of backwater directly enters the cold side inlet of the heat supply network heater 4, steam is introduced into the hot side of the heat supply network heater 4 to heat the low-temperature heat supply network backwater, the high-temperature water at the cold side outlet of the heat supply network heater 4 is directly conveyed to a user for heat supply, and the high-temperature water in the upper cavity is mixed with the high-temperature water at the outlet of the heat supply network heater 4 for heat supply after being increased by the heat storage water pump 2. Along with the progress of exothermic process, whole temperature reduces in the heat accumulation body 1, the volume of water of the same quality can become little, lead to the pressure reduction more than the liquid level in the heat accumulation body 1, because upper portion of the cavity is 95 ℃ or so high temperature water, when the pressure reduction more than the liquid level of heat accumulation body 1, the steam density in the space can be improved by automatic evaporation of high temperature water, generally, need not to start condenser 5 and condensate pump 7, when pressure measurement station 15 monitors the pressure of upper cavity obviously to reduce, can open electric control valve 14, let the outside air flow in the upper cavity and pinch, guarantee that the pressure is steady.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A voltage stabilizing device suitable for a high-capacity hot water storage tank is characterized by comprising
The heat storage body comprises a lower chamber and an upper chamber which are respectively used for accommodating cold working medium and hot working medium and are mutually communicated; and
the heat exchange pressure stabilizing assembly comprises a heat exchange assembly and a condenser assembly; the lower chamber and the upper chamber are respectively connected with the heat exchange assembly through a first pipeline group and a second pipeline group in a heat exchange manner; under different working conditions, the first pipeline group is used for inputting or outputting cold working media to the lower chamber; the second pipeline group inputs or outputs a hot working medium to the upper chamber; the lower chamber and the upper chamber are in heat exchange connection through the condenser assembly, and are used for controlling the condensation speed of steam in the upper chamber by exchanging heat between cold working medium of the lower chamber and steam in the upper chamber in the condenser assembly.
2. The pressure regulating device of claim 1, wherein the first line set comprises a first liquid outlet line and a first liquid return line; the first liquid outlet pipeline is respectively connected with the lower cavity and the cold side inlet of the heat exchange assembly and is used for conveying cold working medium in the lower cavity to the cold side of the heat exchange assembly; the first liquid outlet pipeline is connected in parallel to the first liquid return pipeline, and the first liquid return pipeline is used for shunting backwater of the low-temperature heat network which is introduced into the cold side of the heat exchange assembly and introducing the backwater into the lower cavity.
3. The pressure stabilizing device according to claim 2, wherein the first liquid outlet pipeline comprises a second valve, a first heat storage water pump and a third valve which are sequentially arranged according to the flowing direction of the cold working medium; a fourth valve is arranged on the first liquid return pipeline; and two ends of the fourth valve are respectively connected with the inlet of the second valve and the outlet of the third valve.
4. A pressure stabilizing device as claimed in claim 2 or claim 3 wherein said second conduit set comprises a second liquid outlet conduit and a second liquid return conduit; the second liquid outlet pipeline is respectively connected with the upper chamber and the hot side outlet of the heat exchange assembly and is used for conveying the hot working medium in the upper chamber to the hot side outlet of the heat exchange assembly; the second liquid outlet pipeline is connected in parallel to the second liquid return pipeline, and the second liquid return pipeline is used for shunting hot side water outlet of the heat exchange assembly and introducing the hot side water outlet into the upper cavity.
5. The pressure stabilizing device according to claim 4, wherein the second liquid outlet pipeline comprises a fifth valve, a second heat storage water pump and a sixth valve which are sequentially arranged according to the flowing direction of the hot working medium; a first valve is arranged on the second liquid return pipeline; and two ends of the first valve are respectively connected with the inlet of the fifth valve and the outlet of the sixth valve.
6. The pressure regulating apparatus of claim 5, wherein the second liquid outlet line and the first liquid outlet line share a heat storage water pump.
7. The pressure regulating apparatus of claim 4, wherein the heat exchange assembly comprises a heating pump and a heating grid heater; the heating pump boosts the backwater of the low-temperature heat supply network and then leads the backwater to the cold side of the heat supply network heater; and the hot side of the heat supply network heater is filled with steam.
8. The pressure regulating apparatus of claim 4, wherein the condenser assembly comprises a condensate pump and a condenser; the lower chamber, the condensate pump, the cold side of the condenser and the upper chamber are sequentially connected to form a condensation passage; the steam in the upper chamber passes through the hot side of the condenser and the exhaust chamber and returns to the upper chamber.
9. The pressure regulating device of claim 8, wherein the exhaust chamber is in communication with an electrically operated valve that intermittently opens for exhausting non-condensable gases from the upper chamber.
10. The pressure regulating device of claim 4, wherein the upper chamber is provided with a pressure measuring point for measuring the pressure in the upper chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320831821.4U CN219714120U (en) | 2023-04-14 | 2023-04-14 | Pressure stabilizing device suitable for high-capacity heat storage water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320831821.4U CN219714120U (en) | 2023-04-14 | 2023-04-14 | Pressure stabilizing device suitable for high-capacity heat storage water tank |
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| CN219714120U true CN219714120U (en) | 2023-09-19 |
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| CN202320831821.4U Active CN219714120U (en) | 2023-04-14 | 2023-04-14 | Pressure stabilizing device suitable for high-capacity heat storage water tank |
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