Phase change cold storage comprehensive operation system

Abstract

The utility model relates to the technical field of cold storage and energy storage, in particular to a phase change cold storage comprehensive operation system. Comprising a host control module, a refrigeration module and a load equipment module, the refrigeration module, the host control module and the load equipment module are sequentially connected through a pipeline assembly, and an energy storage module is arranged between the host control module and the load equipment module. The water inlet end of the energy storage module is connected to the water outlet end of the host control module and the water outlet end of the load equipment module, and the water outlet end of the energy storage module is connected to the water inlet end of the load equipment module. The system has multiple operation modes of host direct supply, simultaneous storage and supply, cold storage direct supply and combined cold supply, and different cold supply operation modes can be switched according to different time periods and conditions of load equipment, so that the effects of cost saving, peak load shifting, energy saving and emission reduction are achieved, and the energy-saving efficiency is improved to the maximum extent.

Description

Technical Field

[0001] The present application relates to the field of cold storage and energy storage technology, and in particular to a phase change cold storage integrated operation system. Background Art

[0002] Cold storage technology can store excess cold during periods of low electricity consumption or when the load on refrigeration equipment is low, and release the stored cold during periods of peak electricity consumption or when the load on refrigeration equipment is high, thereby achieving the purpose of shifting peaks and filling valleys and ensuring a reasonable distribution of cold energy, which helps to save energy and protect the environment.

[0003] However, existing cold storage energy storage technologies usually simply add a cold storage device to the original refrigeration equipment, and use the refrigeration equipment to store energy for the cold storage device. Its energy storage and energy supply operation mode is single, and it cannot switch to different energy-saving operation modes according to different time periods and load equipment conditions. The energy-saving efficiency needs to be improved. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a phase change cold storage integrated operation system, including a host control module, a refrigeration module, and a load equipment module. The refrigeration module, the host control module, and the load equipment module are connected in sequence through a pipeline assembly. A storage module is arranged between the host control module and the load equipment module. The water inlet end of the energy storage module is respectively connected to the water outlet end of the host control module and the load equipment module, and the water outlet end of the energy storage module is connected to the water inlet end of the load equipment module.

[0005] Preferably, the energy storage module includes several cold storage tanks, the inlet end of the cold storage tank is connected to a first water collector, the outlet end of the cold storage tank is connected to a first water distributor, and the first water distributor is connected to the water inlet end of the load equipment module through a first water pump.

[0006] Preferably, the water inlet of the load device module is connected to the host control module and the energy storage module respectively through a second water distributor, and the water outlet of the load device module is connected to the host control module and the energy storage module respectively through a second water collector.

[0007] Preferably, the host control module includes several groups of host stations, and the several groups of host stations are respectively connected in parallel with the refrigeration module, the load equipment module and the energy storage module.

[0008] Preferably, the host control module further includes a second water pump and a third water pump, the host station is connected to the refrigeration module via the second water pump, and the host station is connected to the load equipment module via the third water pump.

[0009] Preferably, the pipeline assembly includes a first pipeline and a second pipeline, the first pipeline is connected to the water inlet end of the host control module and the water outlet end of the load device module; the second pipeline is connected to the water outlet end of the host control module and the water inlet end of the load device module.

[0010] Preferably, the pipeline assembly also includes a third pipeline, a fourth pipeline and a fifth pipeline, the third pipeline connects the water inlet end of the energy storage module and the water outlet end of the host control module, the fourth pipeline connects the water outlet end of the load device module and the water inlet end of the energy storage module, and the fifth pipeline connects the water inlet end of the load device module and the water outlet end of the energy storage module.

[0011] As can be seen from the above, the following beneficial effects can be achieved by applying the system provided by this application: This solution connects the host control module and the load device module in sequence through a pipe assembly, and sets an energy storage module between the host control module and the load device module. The water inlet of the energy storage module is respectively connected to the water outlet of the host control module and the load device module, and the water outlet of the energy storage module is connected to the water inlet of the load device module. The system has multiple operating modes including direct supply from the host, supply while storing, direct supply with cold storage, and combined cooling. Different cooling operation modes can be switched according to different time periods and load device conditions, thereby saving costs, achieving the effects of peak shifting and valley filling, energy saving and emission reduction, and maximizing energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments of the present application or the prior art. Obviously, the drawings described below are only part of the embodiments of the present application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0013] Figure 1 This is a schematic diagram of the phase change cold storage integrated operation system according to an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the host direct supply mode of the phase change cold storage integrated operation system according to an embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of a phase change cold storage integrated operation system in a storage and supply mode according to an embodiment of the present application;

[0016] Figure 4 This is a schematic diagram of a direct cold storage mode of a phase change cold storage integrated operation system according to an embodiment of the present application;

[0017] Figure 5 This is a schematic diagram of the combined cooling mode of the phase change cold storage integrated operation system according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] Example

[0020] In order to solve the above technical problems, this embodiment provides a phase change cold storage integrated operation system, such as Figure 1 As shown, it includes a host control module 10, a refrigeration module 20, and a load device module 30. The refrigeration module 20, the host control module 10, and the load device module 30 are connected in sequence through a pipeline assembly. An energy storage module 40 is provided between the host control module 10 and the load device module 30. The water inlet end of the energy storage module 40 is respectively connected to the water outlet end of the host control module 10 and the load device module 30, and the water outlet end of the energy storage module 40 is connected to the water inlet end of the load device module 30. After being cooled by the refrigeration module 20, the cooling water can be directly delivered to the load device module 30 through the host control module 10 for cooling; or the cooling water after being cooled by the refrigeration module 20 can be delivered to the energy storage module 40 through the host control module 10, and then delivered to the load device module 30 for cooling, thereby storing cold in the energy storage module 40; or the return water from the load device module 30 flows into the energy storage module 40, which cools the return water and then provides cooling for the load device module 30, realizing a storage and supply mode. The system has multiple energy storage and supply operation modes, and can switch between different operation modes according to different time periods and load device conditions to maximize energy saving efficiency.

[0021] Specifically, the energy storage module 40 includes several cold storage tanks 41. The inlets of these tanks 41 are connected to a first water collector 43, and the outlets of these tanks 41 are connected to a first water distributor 42. This first water distributor 42 is connected to the water inlet of the load device module 30 via a first water pump 44, which provides power. The cold storage tanks 41 are equipped with a phase change material that freezes at positive temperatures. Cooling water flowing through these tanks stores cold in the phase change material. Return water from the load device module 30, after passing through the tanks 41, is converted into cooling water, which then provides cooling for the load device module 30.

[0022] Among them, the load equipment module 30 may include equipment that needs to be cooled, such as a combination cabinet and a fan coil unit. To this end, the water inlet end of the load equipment module 30 is connected to the host control module 10 and the energy storage module 40 respectively through a second water distributor 42. The cooling water of the host control module 10 or the energy storage module 40 is respectively transported to each equipment that needs to be cooled through the second water distributor 42, and the water outlet end of the equipment is collected through a second water collector 43 and connected to the host control module 10 and the energy storage module 40.

[0023] Furthermore, the host control module 10 includes several groups of host stations 11, which are respectively connected in parallel with the refrigeration module 20, the load equipment module 30 and the energy storage module 40. In actual work, one or more host stations 11 can be selected to be turned on according to the load conditions to meet the cooling demand.

[0024] The host control module 10 also includes a second water pump 12 and a third water pump 13. The host station 11 is connected to the refrigeration module 20 via the second water pump 12, and the host station 11 is connected to the load device module 30 via the third water pump 13. Water from the refrigeration module 20 is delivered to the host station 11 via the second water pump 12, while water from the load device module 30 is delivered to the host station 11 via the third water pump 13. The return water from the load device module 30 is then delivered to the refrigeration module 20 via the host station 11 for cooling. The refrigeration module 20 includes multiple cooling towers.

[0025] In the above solution, the pipeline assembly includes a first pipeline 50 and a second pipeline 60. The first pipeline 50 is connected to the water inlet of the host control module 10 and the water outlet of the load device module 30; the second pipeline 60 is connected to the water outlet of the host control module 10 and the water inlet of the load device module 30. Furthermore, the pipeline assembly also includes a third pipeline 70, a fourth pipeline 80, and a fifth pipeline 90. The third pipeline 70 connects the water inlet of the energy storage module 40 and the water outlet of the host control module 10, the fourth pipeline 80 connects the water outlet of the load device module 30 and the water inlet of the energy storage module 40, and the fifth pipeline 90 connects the water inlet of the load device module 30 and the water outlet of the energy storage module 40.

[0026] Furthermore, in the above scheme, shut-off valves are provided on the first pipeline 50, the second pipeline 60, the third pipeline 70, the fourth pipeline 80 and the fifth pipeline 90, and the opening and closing of the shut-off valves are controlled by the host control module 10, thereby realizing different operation modes through the opening and closing combination of each pipeline.

[0027] Specifically, the specific operation mode of this system is as follows:

[0028] Host direct supply mode: Figure 2As shown, the cooling water coming out of the refrigeration module 20 passes through the host control module 10 and is then directly delivered to the load equipment module 30 to provide cooling for each device. At this time, there is no need to operate the energy storage module 40, that is, when there is a fault in the energy storage module 40, it will not affect the operation of the entire cooling system.

[0029] Storage and supply mode: Figure 3 As shown, cooling water from the refrigeration module 20 passes through the host control module 10 and is then delivered to the energy storage module 40. The cooling water then stores cold in the energy storage module 40. The water output from the energy storage module 40 is then fed into the load device module 30 to provide cooling for each device. This mode eliminates the need for separate cold storage in the energy storage module 40. This mode is used at night, when the average cooling temperature is 5-8 degrees Celsius lower than during the day. This allows the energy storage module 40 to store cold energy, taking advantage of the lowest electricity prices at night, maximizing energy utilization.

[0030] Cold storage direct supply mode: Figure 4 As shown, the energy storage module 40 is used for cooling during peak daytime hours. During this time, the pipeline between the host control module 10 and the load device module 30 is closed, and the water output from the load device module 30 is cooled by the energy storage module 40 before being transported back to the load device module 30. This reduces the high electricity prices during peak daytime hours, saves costs, and achieves the effect of peak load shifting and valley filling, energy conservation, and emission reduction.

[0031] Combined cooling mode: Figure 5 As shown, during peak daytime hours, energy storage module 40 and refrigeration module 20 are used to jointly provide cooling. The water output from the load device module 30 passes through energy storage module 40 and refrigeration module 20, respectively. The water output from energy storage module 40 and refrigeration module 20 then enters the load device module 30 for cooling. In a specific embodiment, the refrigeration module 20 and the host control module 10 are generally designed to operate only 50% of the units, providing 50% of the cooling capacity for the load device module 30. The remaining 50% of the cooling capacity is provided by energy storage module 40. At the same time, 50% of the cooling pumps are reduced, 50% of the cooling towers are reduced in operation by the refrigeration module 20, and 50% of the host units are reduced in operation by the host control module 10. This results in a 20-25% energy saving and a 40-45% electricity cost saving, with significant benefits. The reduced operation of equipment such as the host, water pumps, and cooling towers ensures relative stability, extending the equipment lifespan and reducing maintenance costs.

[0032] In summary, the present application solution connects the host control module and the load device module in sequence through a pipe assembly, and an energy storage module is provided between the host control module and the load device module. The water inlet of the energy storage module is connected to the water outlet of the host control module and the load device module respectively, and the water outlet of the energy storage module is connected to the water inlet of the load device module. The system has multiple operating modes including direct supply from the host, supply while storing, direct supply with cold storage, and combined cooling. Different cooling operation modes can be switched according to different time periods and load device conditions, thereby achieving cost savings, achieving the effects of peak shifting and valley filling, energy conservation and emission reduction, and maximizing energy efficiency.

[0033] The above-described embodiments do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the above-described embodiments shall be included in the scope of protection of this technical solution.

Claims

1. A phase change cold storage integrated operation system, characterized by: The invention comprises a host control module (10), a refrigeration module (20), and a load device module (30), wherein the refrigeration module (20), the host control module (10), and the load device module (30) are sequentially connected via a pipeline assembly, and an energy storage module (40) is provided between the host control module (10) and the load device module (30), wherein the water inlet end of the energy storage module (40) is respectively connected to the water outlet end of the host control module (10) and the load device module (30), and the water outlet end of the energy storage module (40) is connected to the water inlet end of the load device module (30).

2. The phase change cold storage integrated operation system according to claim 1, characterized in that: The energy storage module (40) includes a plurality of cold storage tanks (41), the inlet end of the cold storage tank (41) is connected to a first water collector (43), the outlet end of the cold storage tank (41) is connected to a first water distributor (42), and the first water distributor (42) is connected to the water inlet end of the load device module (30) via a first water pump (44).

3. The phase change cold storage integrated operation system according to claim 2, characterized in that: The water inlet of the load device module (30) is connected to the host control module (10) and the energy storage module (40) respectively through a second water distributor (31), and the water outlet of the load device module (30) is connected to the host control module (10) and the energy storage module (40) respectively through a second water collector (32).

4. The phase change cold storage integrated operation system according to claim 1, characterized in that: The host control module (10) includes several groups of host stations (11), and the several groups of host stations (11) are respectively connected in parallel with the refrigeration module (20), the load device module (30) and the energy storage module (40).

5. The phase change cold storage integrated operation system according to claim 4, characterized in that: The host control module (10) further includes a second water pump (12) and a third water pump (13); the host station (11) is connected to the refrigeration module (20) via the second water pump (12); and the host station (11) is connected to the load device module (30) via the third water pump (13).

6. The phase change cold storage integrated operation system according to claim 1, characterized in that: The pipeline assembly comprises a first pipeline (50) and a second pipeline (60), wherein the first pipeline (50) is connected to the water inlet end of the host control module (10) and the water outlet end of the load device module (30); and the second pipeline (60) is connected to the water outlet end of the host control module (10) and the water inlet end of the load device module (30).

7. The phase change cold storage integrated operation system according to claim 6, characterized in that: The pipeline assembly further includes a third pipeline (70), a fourth pipeline (80) and a fifth pipeline (90), wherein the third pipeline (70) connects the water inlet end of the energy storage module (40) and the water outlet end of the host control module (10), the fourth pipeline (80) connects the water outlet end of the load device module (30) and the water inlet end of the energy storage module (40), and the fifth pipeline (90) connects the water inlet end of the load device module (30) and the water outlet end of the energy storage module (40).

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