Auxiliary water distribution system for improving cold storage efficiency

Abstract

This utility model discloses an auxiliary water distribution system for improving cold storage efficiency, including a cold storage device. The cold storage device contains a first water distribution component, a second water distribution component, and a third water distribution component. The first water distribution component extracts hot water from the cold storage device, the second water distribution component extracts hot water from the thermocline layer of the cold storage device, and the third water distribution component introduces cold water into the cold storage device. A cold storage host is located on the outside of the cold storage device. Both the first and second water distribution components are connected to the inlet of the cold storage host. The first water distribution component has a first regulating valve and a first temperature sensor, the second water distribution component has a second regulating valve and a second temperature sensor, and the third water distribution component is connected to the outlet of the cold storage host. This utility model provides an auxiliary water distribution system for improving cold storage efficiency by using dual water distributors to extract and blend hot water, thereby achieving the extraction of more hot water from the thermocline layer.

Description

Technical Field

[0001] This utility model relates to the field of water-based cold storage, and in particular to an auxiliary water distribution system for improving cold storage efficiency. Background Technology

[0002] In the field of water-based cold storage system technology, water distributors are usually installed at the top and bottom of the cold storage device to achieve stratification of hot and cold water during cold storage and release. The bottom water distributor is connected to the outlet of the cold storage host to inject cold water, and the top water distributor is connected to the inlet of the host to extract hot water, thus forming temperature stratification to improve the cold storage efficiency of the cold storage device. However, the system has a significant drawback in actual operation: a temperature gradient layer forms inside the cold storage device, which becomes more pronounced with increasing cold water injection volume and duration. The water temperature within this gradient layer decreases as the distance from the top water distributor increases. When the cold storage unit continuously draws hot water from the top, the outlet water temperature gradually decreases as it approaches the gradient layer. Once the water temperature is detected to be below the set threshold, the cold storage unit will activate its shutdown protection. At this point, the warm water in the gradient layer at the top of the tank cannot be effectively utilized and occupies the effective volume of the cold storage device. This results in the water volume failing to meet cooling demand and hindering the full utilization of newly injected cold water, leading to a significant reduction in the actual usable volume of the cold storage device. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary water distribution system that improves cold storage efficiency. By using dual water distributors to extract and blend hot water, more hot water can be extracted from the thermocline.

[0004] The technical solution adopted by the auxiliary water distribution system for improving cold storage efficiency disclosed in this utility model is as follows: The device includes a cold storage unit, which contains a first water distribution assembly, a second water distribution assembly, and a third water distribution assembly. The first water distribution assembly is used to extract hot water from the cold storage unit, the second water distribution assembly is used to extract variable-temperature water from the thermocline layer of the cold storage unit, and the third water distribution assembly is used to input cold water into the cold storage unit. A cold storage host is located on the outside of the cold storage unit. The first and second water distribution assemblies are both connected to the water inlet of the cold storage host. The first water distribution assembly is equipped with a first regulating valve and a first temperature sensor, the second water distribution assembly is equipped with a second regulating valve and a second temperature sensor, and the third water distribution assembly is connected to the water outlet of the cold storage host.

[0005] As a preferred embodiment, the first water distribution assembly includes a first water distributor, the second water distribution assembly includes a second water distributor, and the third water distribution assembly includes a third water distributor, with the first, second, and third water distributors all located inside the cold storage device.

[0006] As a preferred embodiment, the first water distributor, the second water distributor, and the third water distributor are all connected to the cold storage host via pipelines.

[0007] As a preferred embodiment, a tee is connected to the pipeline between the first water distributor and the cold storage unit, and the pipeline of the second water distributor is connected to the tee.

[0008] As a preferred embodiment, the first regulating valve and the first temperature sensor are both connected to the pipeline of the first water distributor, and the second regulating valve and the second temperature sensor are both connected to the pipeline of the second water distributor.

[0009] As a preferred embodiment, the cold storage device is equipped with a plurality of fourth temperature sensors arranged at intervals, and the plurality of fourth temperature sensors are used to monitor the temperature of each layer of the thermocline layer in the cold storage device.

[0010] As a preferred embodiment, a third regulating valve and a third temperature sensor are connected in the pipeline between the third water distributor and the cold storage host.

[0011] The beneficial effects of the auxiliary water distribution system for improving cold storage efficiency disclosed in this utility model are: After the chilled water generator produces chilled water, it is injected into the chilled water storage device via the third water distribution component. Simultaneously, the chilled water generator draws hot water from the chilled water storage device via the first and second water distribution components. As chilled water is continuously injected, the thermocline inside the chilled water storage device gradually rises, causing the temperature of the hot water drawn by the first water distribution component to be higher than the temperature of the variable-temperature water drawn by the second water distribution component. However, the temperature of the two water flows is detected by the first and second temperature sensors, and the flow rates are adjusted accordingly using the first and second regulating valves. This allows the lower-temperature variable-temperature water to mix with the higher-temperature hot water, so that the temperature of the mixed hot water reaches the minimum operating temperature preset by the chilled water generator. This control method helps to draw more hot water from the thermocline, increasing the storage capacity of chilled water in the chilled water storage device, thereby improving the overall chilled water storage efficiency of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an auxiliary water distribution system for improving cold storage efficiency according to this utility model. Detailed Implementation

[0013] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: Please refer to Figure 1 .

[0014] The present invention discloses an auxiliary water distribution system for improving cold storage efficiency, including a cold storage device 1; In this embodiment, the preferred cold storage device 1 is a cold storage tank, but it is not limited to this. It can also be a cold storage water pool, a cold storage water tank, or other cold storage structures with the same function. The cold storage device 1 is provided with a first water distribution assembly, a second water distribution assembly, and a third water distribution assembly. The first water distribution assembly is used to extract hot water from the top of the cold storage device 1, the second water distribution assembly is used to extract variable temperature water from the inclined temperature layer in the middle of the cold storage device 1, and the third water distribution assembly is used to input cold water into the bottom of the cold storage device 1. Furthermore, the first water distribution assembly includes a first water distributor 11, the second water distribution assembly includes a second water distributor 12, and the third water distribution assembly includes a third water distributor 13. The first water distributor 11, the second water distributor 12, and the third water distributor 13 are all placed inside the cold storage device 1. The first water distributor 11 is located at the top inside the cold storage device 1, and the water level inside the cold storage device 1 is above the first water distributor 11. The pipes of the first water distributor 11 extend out of the cold storage device 1 and are fixedly connected to the interior of the cold storage device 1. The second water distributor 12 is located in the middle of the cold storage device 1, and the pipes of the second water distributor 12 extend out of the cold storage device 1 and are fixedly connected to the interior of the cold storage device 1. The third water distributor 13 is located at the bottom of the cold storage device 1, and the pipes of the third water distributor 13 extend out of the cold storage device 1 and are fixedly connected to the interior of the cold storage device 1.

[0015] A cold storage unit 2 is provided on the outside of the cold storage device 1. The first water distribution component and the second water distribution component are both connected to the water inlet of the cold storage unit 2, and the third water distribution component is connected to the water outlet of the cold storage unit 2. Furthermore, the first water distributor 11, the second water distributor 12 and the third water distributor 13 are all connected to the cold storage host 2 through pipelines; a water pump 21 is connected between the pipeline of the first water distributor 11 and the cold storage host 2, and the pipeline of the first water distributor 11 is connected to the water inlet of the cold storage host 2 through the water pump 21. Furthermore, a tee is connected to the pipeline between the first water distributor 11 and the cold storage host 2, and the water pump 21 is located between the tee and the cold storage host 2. The pipeline of the second water distributor 12 is connected to the tee. The water pump 21 uses the tee as the main channel and applies suction to the first water distributor 11 and the second water distributor 12 to extract hot water from the cold storage device 1 and send the hot water into the cold storage host 2 for cooling. Furthermore, the first water distribution assembly is equipped with a first regulating valve V1 and a first temperature sensor T1. Both the first regulating valve V1 and the first temperature sensor T1 are connected to the pipeline of the first water distributor 11. Both the first regulating valve V1 and the first temperature sensor T1 are located between the tee and the first water distributor 11. The first regulating valve V1 is used to regulate the flow rate of hot water drawn from the cold storage device 1 by the first water distributor 11, and the first temperature sensor T1 is used to monitor the temperature of the water flowing through the pipeline of the first water distributor 11. Furthermore, the second water distribution assembly is equipped with a second regulating valve V2 and a second temperature sensor T2. Both the second regulating valve V2 and the second temperature sensor T2 are connected to the pipeline of the second water distributor 12. Both the second regulating valve V2 and the second temperature sensor T2 are located between the tee and the second water distributor 12. The second regulating valve V2 is used to regulate the flow rate of the variable temperature water drawn from the cold storage device 1 by the second water distributor 12. The second temperature sensor T2 is used to monitor the temperature of the water flowing through the pipeline of the second water distributor 12. Furthermore, the tee is used to mix the water flows drawn by the first water distributor 11 and the second water distributor 12. Furthermore, the pipeline of the third water distributor 13 is connected to the outlet of the chilled water storage unit 2. The pipeline between the third water distributor 13 and the chilled water storage unit 2 is connected to the third regulating valve V3 and the third temperature sensor T3. After the chilled water storage unit 2 produces chilled water, it is injected into the chilled water storage device 1 through the third water distributor 13. The third regulating valve V3 is used to regulate the flow rate of chilled water injected into the chilled water storage device 1 by the third water distributor 13. The third temperature sensor T3 is used to monitor the water flow temperature. When the water flow temperature is detected to exceed the preset range, the third regulating valve V3 cuts off the water flow path, and the chilled water storage unit 2 stops operating.

[0016] A column 14 is fixedly connected inside the cold storage device 1. The column 14 stands vertically inside the cold storage device 1, so that the column passes through the inclined temperature layer inside the cold storage device 1. The cold storage device is equipped with a plurality of fourth temperature sensors T4. The plurality of fourth temperature sensors T4 are fixedly connected to the column and are arranged at intervals on the column. The plurality of fourth temperature sensors T4 are used to monitor the temperature of each layer of the inclined temperature layer inside the cold storage device.

[0017] When this water distribution system is in operation: The water pump 21 draws hot water from the cold storage device 1 through the three-way valve, the first water distributor 11 and the second water distributor 12, and delivers it to the cold storage host 2 for cooling. The cooled water is then reinjected into the cold storage device 1 through the third water distributor 13.

[0018] As cold water is continuously injected, the inclined temperature layer inside the cold storage device 1 gradually rises. Multiple fourth temperature sensors T4 monitor the position change of the inclined temperature layer inside the cold storage device 1 in real time. When the fourth temperature sensor T4 located near the second water distributor 12 detects that the inclined temperature layer is approaching, the second regulating valve V2 opens and begins to extract variable temperature water from the inclined temperature layer. The hot water temperature drawn by the first water distributor 11 is higher than the temperature of the variable-temperature water drawn by the second water distributor 12. The first temperature sensor T1 and the second temperature sensor T2 detect the temperature of the two hot water streams respectively, and the first regulating valve V1 and the second regulating valve V2 adjust their flow rates accordingly. A certain amount of low-temperature variable-temperature water and a certain amount of high-temperature hot water are mixed at the three-way junction, thereby raising the temperature of the variable-temperature water so that the temperature of the variable-temperature water drawn by the second water distributor 12 reaches the minimum operating temperature preset by the cold storage host 2. When the water temperature drawn by the second water distributor 12 is too low, the second regulating valve V2 is closed.

[0019] The first water distributor 11 continuously draws hot water from the inclined temperature layer until the temperature of the hot water it draws is equal to the preset minimum operating temperature of the cold storage unit 2, at which point the first regulating valve V1 closes. This control strategy helps to draw more hot water from the inclined temperature layer, reduce the thickness of the inclined temperature layer, increase the storage capacity of cold water in the cold storage device 1, and thus improve the overall cold storage efficiency of the cold storage device 1.

[0020] This invention provides an auxiliary water distribution system to improve cold storage efficiency. After the cold storage unit produces cold water, it is injected into the cold storage device through a third water distribution component. Simultaneously, the cold storage unit extracts hot water from the cold storage device through a first and second water distribution component. As cold water is continuously injected, the thermocline inside the cold storage device gradually rises, causing the temperature of the hot water extracted by the first water distribution component to be higher than the temperature of the variable-temperature water extracted by the second water distribution component. However, the temperature of the two water flows is detected by the first and second temperature sensors respectively, and the flow rates are adjusted accordingly by the first and second regulating valves, so that the lower-temperature variable-temperature water and the higher-temperature hot water are mixed, thereby achieving the minimum operating temperature preset by the cold storage unit. This control method helps to extract more hot water from the thermocline, increasing the storage capacity of cold water in the cold storage device, and thus improving the overall cold storage efficiency of the cold storage device.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An auxiliary water distribution system for improving cold storage efficiency, characterized in that, The device includes a cold storage unit, which is equipped with a first water distribution assembly, a second water distribution assembly and a third water distribution assembly. The first water distribution assembly is used to extract hot water from the cold storage unit, the second water distribution assembly is used to extract variable temperature water from the temperature slope layer of the cold storage unit, and the third water distribution assembly is used to input cold water into the cold storage unit. The cold storage device is equipped with a cold storage host on its outer side. The first water distribution component and the second water distribution component are both connected to the water inlet of the cold storage host. The first water distribution component is equipped with a first regulating valve and a first temperature sensor. The second water distribution component is equipped with a second regulating valve and a second temperature sensor. The third water distribution component is connected to the water outlet of the cold storage host.

2. The auxiliary water distribution system for improving cold storage efficiency as described in claim 1, characterized in that, The first water distribution assembly includes a first water distributor, the second water distribution assembly includes a second water distributor, and the third water distribution assembly includes a third water distributor. The first water distributor, the second water distributor, and the third water distributor are all placed inside the cold storage device.

3. The auxiliary water distribution system for improving cold storage efficiency as described in claim 2, characterized in that, The first, second, and third water distributors are all connected to the cold storage unit via pipelines.

4. The auxiliary water distribution system for improving cold storage efficiency as described in claim 3, characterized in that, A tee is connected to the pipeline between the first water distributor and the chilled water storage unit, and the pipeline of the second water distributor is connected to the tee.

5. The auxiliary water distribution system for improving cold storage efficiency as described in claim 4, characterized in that, The first regulating valve and the first temperature sensor are both connected to the pipeline of the first water distributor, and the second regulating valve and the second temperature sensor are both connected to the pipeline of the second water distributor.

6. The auxiliary water distribution system for improving cold storage efficiency as described in claim 5, characterized in that, The cold storage device is equipped with multiple fourth temperature sensors arranged at intervals, which are used to monitor the temperature of each layer of the thermocline in the cold storage device.

7. The auxiliary water distribution system for improving cold storage efficiency as described in claim 6, characterized in that, A third regulating valve and a third temperature sensor are connected in the pipeline between the third water distributor and the cold storage unit.

Images