CN213421308U - Dual-purpose energy storage water tank for cold accumulation and heat accumulation - Google Patents
Dual-purpose energy storage water tank for cold accumulation and heat accumulation Download PDFInfo
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- CN213421308U CN213421308U CN202022211988.XU CN202022211988U CN213421308U CN 213421308 U CN213421308 U CN 213421308U CN 202022211988 U CN202022211988 U CN 202022211988U CN 213421308 U CN213421308 U CN 213421308U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 233
- 238000004146 energy storage Methods 0.000 title claims abstract description 96
- 238000009825 accumulation Methods 0.000 title description 13
- 238000005338 heat storage Methods 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims description 21
- 238000009826 distribution Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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Abstract
A cold and heat storage dual-purpose energy storage water tank belongs to the technical field of energy storage. The cold storage water tank and the heat storage water tank are integrated, the water distribution pipes are reasonably arranged to realize twice uniform distribution of water flow, the uniformity of water flow during energy storage and energy release is effectively realized, the thickness of a thermocline is reduced, double functions of heat storage in winter and cold storage in summer are realized, the energy storage efficiency and the equipment use efficiency are improved, the space and the investment and maintenance cost are effectively saved, and the water outlet temperature is ensured. The utility model provides a water distributor setting has reduced the disturbance of rivers, has effectively avoided the hot and cold water mixing, has guaranteed the leaving water temperature. The utility model discloses the problem of energy supply and demand mismatch in time and space is effectively solved to the energy storage technology, can effectively satisfy user's demand, has improved the peak shaving ability of system, provides the space for other renewable energy's utilization. In addition, the energy storage technology can replace a peak cold and heat source, the starting and stopping frequency of the unit is reduced, the unit is effectively protected, the service life of the unit is prolonged, and economic benefits and environmental benefits are achieved.
Description
Technical Field
The utility model belongs to the technical field of the energy storage, in particular to dual-purpose energy storage water tank of cold-storage and heat accumulation.
Background
Along with the rapid development of the urbanization process in China, the demand of people on cold and heat is increased, so that the cooling and heating load of a building is rapidly increased, and the unit is required to increase the cooling and heating load. On the other hand, when the system is in the energy consumption valley period, the system is difficult to quickly adjust along with the change of the external cold and hot load. In addition, the current power rate grading policy is that the power rate is very low during the night time when the load is low, and the power rate is higher during the day time when the load is high. Therefore, how to solve the contradiction between the supply and the demand of the cooling and heating has become a key to be solved urgently. The energy storage technology can store redundant cold or heat of the system in the cold and heat utilization valley period, and the redundant cold or heat can be released in the peak period of cold or heat utilization, so that the demands of users can be effectively met, the cold and heat supply amount of the system can be timely adjusted according to the fluctuation of external cold and heat loads, the adjustment unit is not needed, and only the flow of the energy storage water tank needs to be adjusted. Meanwhile, the cold and heat accumulation technology is added in the system, so that the peak regulation capacity of the system can be improved, and a space is provided for the utilization of other renewable energy sources. In addition, the cold and heat storage technology can replace a peak cold and heat source, the starting and stopping frequency of the unit is reduced, the unit is effectively protected, and the service life of the unit is prolonged. Therefore, the cold and heat storage technology can effectively solve the problem of mismatching of the supply and the demand of energy in time and space, meet the demand of cooling and heating, reduce the consumption of primary energy and generate better economic benefit.
When the cold and heat accumulation system is arranged on a building, the cold and heat accumulation system is usually arranged separately, and the occupied space is large. The heat storage system needs to be closed when the cold storage system is opened in summer, and the cold storage system needs to be closed when the heat storage system is opened in winter, so that the other system is idle, but the other system still needs to be maintained and overhauled to prevent the system from being broken down. Therefore, the two systems which are separately arranged have the defects of high investment and maintenance cost and large occupied space. And the water distribution pipe of the existing cold and heat accumulation system is relatively disordered when being arranged, so that the water flow disturbance is large, the water flow uniform distribution effect is poor, the thickness of the thermocline is high, and the water outlet temperature cannot be ensured.
In view of the above problems, an energy storage water tank for cold storage and heat storage is designed. The water tank can effectively save space and investment and maintenance cost, and ensure the temperature of the outlet water. The problem of contradiction between supply and demand of cooling and heating loads can be solved to a certain extent, space can be provided for utilization of other renewable energy sources, the unit is effectively protected, the service life of the unit is prolonged, and economic benefits and environmental benefits are achieved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dual-purpose energy storage water tank of cold-storage and heat accumulation. The cold and heat storage water tank solves the defects that the existing cold and heat storage water tank proposed in the background technology is high in investment and maintenance cost, large in occupied space and incapable of ensuring the temperature of outlet water.
The technical scheme of the utility model:
a cold-storage and heat-storage dual-purpose energy storage water tank comprises an energy storage water tank 1, cold and heat source equipment 2 and heat exchange equipment 3; the energy storage water tank 1 is respectively connected with the cold and heat source equipment 2 and the heat exchange equipment 3, and the connection modes of the energy storage water tank 1 and the cold and heat source equipment 2 and the heat exchange equipment 3 are consistent;
the energy storage water tank 1 is communicated with the cold and heat source equipment 2 through a water outlet pipeline and a water inlet pipeline, the water outlet pipeline and the water inlet pipeline of the energy storage water tank 1 are divided into two branches, and the two branches are respectively an independent water outlet pipeline and an independent water inlet pipeline in summer and winter; the water outlet pipeline is divided into two branches after being converged to the butterfly valve, the two branch pipelines are provided with an energy storage circulating water pump and a valve, and the two branch pipelines are converged to the cold and heat source equipment 2; the water inlet pipeline enters the energy storage water tank 1 through another butterfly valve; the upper part and the lower part of the energy storage water tank 1 are respectively provided with a temperature sensor, and the bottom of the energy storage water tank 1 is provided with a fifth butterfly valve 13 and a water discharge point 14; the bottom of the energy storage water tank 1 is provided with a fifth butterfly valve 13, when the water tank needs to be overhauled, breaks down or changes water, the fifth butterfly valve 13 is opened to discharge the water in the water tank through a drainage point 14, and simultaneously, when the water tank overflows, the overflow water in the water tank is discharged through an overflow pipe at the top of the energy storage water tank 1 through the drainage point 14; a check valve 12 is arranged in the energy storage water tank 1 to ensure that water in the water tank is prevented from leaking in the reverse direction;
the energy storage water tank 1 comprises an energy storage water tank body 101, a support seat 102, an interface, a spray pipe 105, a nozzle 106 and a support structure 107; the supporting seat 102 is arranged in the energy storage water tank body 101, and the supporting structure 107 is fixed on the supporting seat 102; a plurality of spray pipes 105 are arranged on the supporting structure 107, and two ends of each spray pipe 105 are respectively gathered to the left connector and the right connector; the two interfaces have the same structure and are divided into an upper interface and a lower interface, and the upper interface and the lower interface are divided into a water outlet and a water inlet through a butterfly valve; the spray nozzles 106 are mounted on the shower pipe 105.
The utility model has the advantages that: the utility model discloses close cold-storage water tank and heat storage water tank as an organic whole to through the reasonable twice equipartition that realizes rivers of setting up the water distributor, rivers homogeneity when effectively having realized energy storage and energy release has reduced thermocline thickness, has realized the dual function of heat storage in winter and summer cold-storage, has also improved energy storage efficiency and equipment availability factor simultaneously, effectively practices thrift space and investment maintenance cost, guarantees leaving water temperature. The utility model provides a water distributor setting has reduced the disturbance of rivers, has avoided the excessive mixing of hot and cold water, has reduced thermocline thickness and energy storage loss, has guaranteed the leaving water temperature. The utility model discloses a problem is not matched in the energy supply and demand of energy on time and space is effectively solved to the energy storage technique, can effectively satisfy user's demand, has improved the peak shaving ability of system, provides the space for other renewable energy's utilization. In addition, the energy storage technology can replace a peak cold and heat source, the starting and stopping frequency of the unit is reduced, the unit is effectively protected, the service life of the unit is prolonged, and economic benefits and environmental benefits are achieved.
Drawings
Fig. 1 is a system diagram of an energy storage water tank for cold and heat storage of the present invention.
FIG. 2 is a schematic view of a water distributor nozzle arrangement.
Figure 3 is a direct front cross-sectional view of a water distributor.
Fig. 4 is an outline view of the water distributor.
In the figure: 1, an energy storage water tank; 2 cold and heat source equipment; 3, heat exchange equipment; 4, a first energy-releasing circulating water pump; 5, a second energy-releasing circulating water pump; 6, a first energy storage circulating water pump; 7 a second energy storage circulating water pump; 8a first butterfly valve; 9a second butterfly valve; 10a third butterfly valve; 11a fourth butterfly valve; 12, a check valve; 13 a fifth butterfly valve; 14, a water discharge point; 15 a first temperature sensor; 16 a second temperature sensor; 17 a first valve; 18 a second valve; 19 a third valve; 20 a fourth valve; 101 an energy storage water tank body; 102 supporting a seat; 103 right interface; 104 left interface; 105 a spray pipe; 106 a nozzle; 107 a support structure; 103S1 first butterfly valve 8a port, 103S2 second butterfly valve 9b port, 103X1 first butterfly valve 8b port, 103X2 second butterfly valve 9a port, 104S1 third butterfly valve 10b port, 104S2 fourth butterfly valve 11a port, 104X1 third butterfly valve 10a port, 104X2 fourth butterfly valve 11b port.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
A cold and heat storage dual-purpose energy storage water tank comprises an energy storage water tank 1, a cold and heat source device 2, a heat exchange device 3, a first energy release circulating water pump 4, a second energy release circulating water pump 5, a first energy storage circulating water pump 6, a second energy storage circulating water pump 7, a first butterfly valve 8, a second butterfly valve 9, a third butterfly valve 10, a fourth butterfly valve 11, a check valve 12, a fifth butterfly valve 13, a drainage point 14, a first temperature sensor 15, a second temperature sensor 16, a first valve 17, a second valve 18, a third valve 19, a fourth valve 20, an energy storage water tank body 101, a supporting seat 102, a right interface 103, a left interface 104, a spray pipe 105, a nozzle 106 and a supporting structure 107;
the cold and heat source equipment 2 is communicated with the energy storage water tank 1, the energy storage water tank 1 has cold and heat storage capacity at the same time, when the energy storage water tank 1 stores energy, the cold and heat source generated by the cold and heat source equipment 2 enters the energy storage water tank 1 through a first butterfly valve 8(a is opened in winter and closed in summer, b is opened in summer and closed in winter) at an inlet section along a pipeline, and meanwhile, return water in the energy storage water tank 1 is sent to the heat source equipment 2 to be reheated (in winter) or refrigerated (in summer) through a second butterfly valve 9(a is opened in winter and closed in summer, b is opened in summer and closed in winter) at an outlet section along the pipeline, and a plurality of valves and an instrument monitoring system are arranged on a connecting pipeline of the energy storage circulating water pump to operate;
the heat exchange device 3 is communicated with the energy storage water tank 1, when the energy storage water tank 1 releases energy, cold water (summer) or hot water (winter) in the energy storage water tank 1 is conveyed to the heat exchange device 3 and a heat supply network for refrigeration (summer) or heat exchange (winter) through a fourth butterfly valve 11(a is opened in winter, closed in summer, opened in summer and closed in winter) along a pipeline, and all the cold water or the hot water (winter) can be completely opened if necessary, and simultaneously, return water after the refrigeration (summer) or the heat exchange (winter) is completed is conveyed to the energy storage water tank 1 for waiting for next re-refrigeration (summer) or heat exchange (winter) through a third butterfly valve 10(a is opened in winter, closed in summer, closed in winter) along the pipeline, and a plurality of valves and an instrument monitoring system are arranged on a connecting pipeline of the energy-releasing circulation water pump for operation;
the energy storage water tank 1 has cold and heat storage capacity at the same time, and ensures good cold and heat storage layering effects. In summer, cold water enters from the bottom of the water tank during cold accumulation, warm water flows out from the top, cold water flows out from the bottom during cold release, and return water flows in from the top. In winter, the two steps are opposite, so that the layering effect is ensured. The operation process is as follows:
winter heat storage mode: the first butterfly valve 8a and the second butterfly valve 9a are opened, the first butterfly valve 8b, the second butterfly valve 9b, the third butterfly valves 10a, 10b and the fourth butterfly valves 11a and 11b are closed, hot water generated by the heat source equipment 2 enters the energy storage water tank 1 through the first butterfly valve 8a at the hot water inlet section along the pipeline, the hot water enters the spray pipe 105 through the upper water distribution pipe 103-S1 interface and flows through the nozzles 106 on the pipelines to realize uniform spraying, whether heat accumulation is completed or not is judged by observing whether the second temperature sensor 16 at the bottom of the water tank reaches a set temperature value or not, meanwhile, cold water in the energy storage water tank 1 enters the spray pipe 105 through the nozzles 106 on the pipelines of the lower water distribution pipe, is conveyed to the heat source equipment 2 for reheating along the interface 103-X2 through the backwater second butterfly valve 9a by an energy storage circulating water pump (which is used for one and standby and can be fully opened when necessary), and is conveyed to the energy storage water tank 1 again until the water body temperature is heated to the water supply temperature meeting the operation requirement;
winter heat release mode: the third butterfly valve 10a and the fourth butterfly valve 11a are opened, the third butterfly valve 10b, the fourth butterfly valve 11b, the first butterfly valves 8a and 8b and the second butterfly valves 9a and 9b are closed, hot water in the energy storage water tank 1 enters the spray pipe 105 through the nozzles 106 on the pipelines of the upper water distribution pipe, the hot water is sent to the heat exchange equipment 3 through the 104-S2 interface and the fourth butterfly valve 11a of the hot water outlet section through the energy-releasing circulating water pump (which is used for one time and can be completely opened if necessary) to exchange heat with the heat supply network, the returned water after heat exchange enters the spray pipe 105 through the inlet section third butterfly valve 10a along the pipeline and the 104-X1 interface, and flows through the nozzles 106 on the pipelines to enter the energy storage water tank 1 to wait for reheating for the next time;
summer cold accumulation mode: the first butterfly valve 8b and the second butterfly valve 9b are opened, the first butterfly valve 8a, the second butterfly valve 9a, the third butterfly valves 10a, 10b and the fourth butterfly valves 11a and 11b are closed, cold water generated by the cold source equipment 2 enters the energy storage water tank 1 through the first butterfly valve 8b at the cold water inlet section along the pipeline, the cold water enters the spray pipe 105 through the lower water distribution pipe 103-X1 interface and flows through the nozzles 106 on each pipeline to realize uniform spraying, whether the cold storage is completed is judged by observing whether the top first temperature sensor 15 reaches the set temperature, meanwhile, hot water in the energy storage water tank 1 enters the spray pipe 105 through the nozzles 106 on the pipelines of the upper water distribution pipe, and is sent to the cold source equipment 2 for re-refrigeration through the energy storage circulating water pump (one for one and one for standby and can be completely opened if necessary) along the interface 103-S2 through the backwater second butterfly valve 9b until the water temperature is refrigerated to the water supply temperature meeting the operation requirement and then is sent to the energy storage water tank 1 again;
summer cooling mode: opening a third butterfly valve 10b and a fourth butterfly valve 11b, closing the third butterfly valve 10a, the fourth butterfly valve 11a, the first butterfly valves 8a, 8b and the second butterfly valves 9a and 9b, feeding cold water in the energy storage water tank 1 into a spray pipe 105 through nozzles 106 on all the pipelines of a lower-layer water distribution pipe, feeding the cold water into a heat exchange device 3 through a 104-X2 interface and a cold water outlet section fourth butterfly valve 11b through an energy-releasing circulating water pump (which is used for one purpose and can be completely opened if necessary) to refrigerate with a pipe network, feeding the refrigerated return water into the spray pipe 105 through the inlet section third butterfly valve 10b along the pipelines through 104-S1 interfaces, and feeding the refrigerated return water into the energy storage water tank 1 through the nozzles 106 on all the pipelines to wait for the next re-refrigeration;
the water distribution pipe is divided into an upper layer and a lower layer and mainly comprises a right connector 103, a left connector 104, a spray pipe 105, nozzles 106 and a support seat 102, the water distribution pipe is fixed on the energy storage water tank body 101 through the support seat 102, the nozzles 106 are uniformly arranged on the pipeline through the spray pipe 105, and the nozzles are ensured to uniformly discharge on the cross section of the whole water tank; circulating water enters a spray pipe 105 through the connectors 103 and 104 and flows through nozzles 106 on all pipelines to realize uniform spraying; the purpose of right interface 103 and left interface 104 is for making into water earlier carry out once equipartition, evenly divide into two rivers that the flow equals, then gets into the water distribution dish of energy storage water tank, carries out the secondary equipartition to guarantee that the equipartition is respond well, realize better layering effect.
In addition, the water distributor of upper portion water distribution dish trompil is upwards, and the bottom water distribution dish trompil is downward, and the purpose of trompil reduces its efflux influence when making water in water distribution dish equipartition like this, makes efflux evenly distributed on the water tank interface as far as possible, reduces fluidic mixing, reduces the thermocline thickness of water tank, improves energy storage efficiency.
The water distributor is shown in figure 4.
The energy-releasing circulating water pump is connected with the heat exchange equipment 3 and the energy-storing water tank 1, circulating water is pumped from the energy-storing water tank 1 to the heat exchange equipment 3 through the energy-releasing circulating water pump and indirectly exchanges heat or refrigerates with return water of a pipe network, and a plurality of valves and pressure gauges are arranged on a circulating water conveying pipeline according to requirements; the energy-releasing circulating water pumps are used and prepared, and can be completely opened when necessary, and when one of the energy-releasing circulating water pumps needs to be overhauled or has a fault, the circulating water can complete heat exchange or refrigeration through the other energy-releasing circulating water pump;
the energy storage circulating water pump is connected with the cold and heat source equipment 2 and the energy storage water tank 1, circulating water is pumped from the energy storage water tank 1 to the cold and heat source equipment 2 through the energy storage circulating water pump to finish the reheating or refrigeration of return water, and a plurality of valves and pressure gauges are arranged on the circulating water conveying pipeline according to requirements; the energy storage circulating water pumps are used for one time and are all opened when necessary, and when one of the energy storage circulating water pumps needs to be overhauled or has a fault, the circulating water can be heated or refrigerated through the other energy storage circulating water pump;
the bottom of the energy storage water tank 1 is provided with a fifth butterfly valve 13, when the water tank needs to be overhauled, breaks down or changes water, the fifth butterfly valve 13 can be opened to discharge water in the water tank through a drainage point 14, and meanwhile, when the water tank overflows, an overflow pipe at the top of the energy storage water tank 1 can discharge overflow water in the water tank through the drainage point 14.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A cold-storage and heat-storage dual-purpose energy storage water tank is characterized by comprising an energy storage water tank (1), cold and heat source equipment (2) and heat exchange equipment (3); the energy storage water tank (1) is respectively connected with the cold and heat source equipment (2) and the heat exchange equipment (3), and the connection modes of the energy storage water tank (1) and the cold and heat source equipment (2) and the heat exchange equipment (3) are consistent;
the energy storage water tank (1) is communicated with the cold and heat source equipment (2) through a water outlet pipeline and a water inlet pipeline, the water outlet pipeline and the water inlet pipeline of the energy storage water tank (1) are divided into two branches, and the two branches are respectively the independent water outlet pipeline and the independent water inlet pipeline in summer and winter; the water outlet pipeline is divided into two branches after being converged to the butterfly valve, the two branch pipelines are provided with an energy storage circulating water pump and a valve, and the two branch pipelines are converged to the cold and heat source equipment (2); the water inlet pipeline enters the energy storage water tank (1) through another butterfly valve; the upper part and the lower part of the energy storage water tank (1) are respectively provided with a temperature sensor, and the bottom of the energy storage water tank (1) is provided with a fifth butterfly valve (13) and a drainage point (14); the bottom of the energy storage water tank (1) is provided with a fifth butterfly valve (13), when the water tank needs to be overhauled, breaks down or changes water, the fifth butterfly valve (13) is opened to discharge the water in the water tank through a drainage point (14), and simultaneously when the water tank overflows, the overflow water in the water tank is discharged through an overflow pipe at the top of the energy storage water tank (1) through the drainage point (14); a check valve (12) is arranged in the energy storage water tank (1) to ensure that water in the water tank is prevented from leaking in the reverse direction;
the energy storage water tank (1) comprises an energy storage water tank body (101), a supporting seat (102), a connector, a spray pipe (105), a nozzle (106) and a supporting structure (107); the supporting seat (102) is arranged in the energy storage water tank body (101), and the supporting structure (107) is fixed on the supporting seat (102); a plurality of spray pipes (105) are arranged on the supporting structure (107), and two ends of each spray pipe (105) are respectively gathered to the left connector and the right connector; the two interfaces have the same structure and are divided into an upper interface and a lower interface, and the upper interface and the lower interface are divided into a water outlet and a water inlet through a butterfly valve; the spray nozzles (106) are mounted on the shower pipe (105).
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CN202022211988.XU CN213421308U (en) | 2020-10-05 | 2020-10-05 | Dual-purpose energy storage water tank for cold accumulation and heat accumulation |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112128896A (en) * | 2020-10-05 | 2020-12-25 | 大连理工大学 | Dual-purpose energy storage water tank for cold accumulation and heat accumulation |
CN114719650A (en) * | 2022-04-15 | 2022-07-08 | 青岛福格节能环保工程有限公司 | Slow-release mixed flow energy storage system |
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2020
- 2020-10-05 CN CN202022211988.XU patent/CN213421308U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112128896A (en) * | 2020-10-05 | 2020-12-25 | 大连理工大学 | Dual-purpose energy storage water tank for cold accumulation and heat accumulation |
CN114719650A (en) * | 2022-04-15 | 2022-07-08 | 青岛福格节能环保工程有限公司 | Slow-release mixed flow energy storage system |
CN114719650B (en) * | 2022-04-15 | 2024-03-01 | 青岛福格节能环保工程有限公司 | Sustained-release mixed flow energy storage system |
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Assignee: Dalian Baoyuan Nuclear Equipment Co.,Ltd. Assignor: DALIAN University OF TECHNOLOGY Contract record no.: X2023980052038 Denomination of utility model: A dual-purpose energy storage water tank for cold and heat storage Granted publication date: 20210611 License type: Common License Record date: 20231213 |