Chilled water storage refrigerating system

Abstract

The utility model relates to the technical field of cold storage and energy storage, and provides a chilled water storage refrigerating system. Comprising an energy storage pool, a heat exchanger assembly and a water chilling unit. The energy storage pool is connected with the cold release side of the heat exchanger assembly to form a circulation loop. The user side of the heat exchanger assembly is connected with the user side to form a circulation loop. The chilled water side of the water chilling unit is connected with the energy storage pool to form a circulation loop, and the chilled water side of the water chilling unit is connected with the user side to form a circulation loop; the cooling water side of the water chilling unit is connected with the cooling tower assembly to form a circulation loop. The water chilling unit has the beneficial effects that the water chilling unit stores energy for the fire-fighting energy storage water pool and / or the newly-built energy storage water pool in the electricity utilization trough period at night, and the stored energy in the fire-fighting energy storage water pool and / or the newly-built energy storage water pool exchanges heat with the heat exchanger assembly to refrigerate the user side in the peak period and the peak period in the daytime; after the stored energy in the fire-fighting energy storage water pool and / or the newly-built energy storage water pool is used up, the water chilling unit and the user side are used for heat exchange refrigeration, and the refrigeration cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cold storage and energy storage, in particular to a water cold storage refrigeration system. Background Art

[0002] The existing refrigeration system does not have the function of energy storage (cold storage) and relies entirely on heat exchange between the chiller and the user end for cooling. Especially during peak hours when electricity prices are high, the cooling cost of the chiller is high.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a water storage refrigeration system to solve the technical problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a water storage cooling system, comprising: an energy storage water tank, a heat exchanger assembly and a chiller; the energy storage water tank is connected to the cold release side of the heat exchanger assembly to form a circulation loop, and the user side of the heat exchanger assembly is connected to the user end to form a circulation loop;

[0006] The chilled water side of the chiller is connected to the energy storage tank to form a circulation loop, and the chilled water side of the chiller is connected to the user end to form a circulation loop; the cooling water side of the chiller is connected to the cooling tower assembly to form a circulation loop.

[0007] In an optional embodiment, the energy storage tank includes a fire energy storage tank and a new energy storage tank connected in parallel; the heat exchanger assembly includes a first plate heat exchanger and a second plate heat exchanger connected in parallel;

[0008] After the fire energy storage tank is connected to the first circulation pump assembly, it is connected to the cold release sides of the first plate heat exchanger and the second plate heat exchanger respectively to form a circulation loop;

[0009] After the newly built energy storage water tank is connected to the second circulation pump assembly, it is connected to the cold release sides of the first plate heat exchanger and the second plate heat exchanger respectively to form a circulation loop.

[0010] In an optional embodiment, the user sides of the first plate heat exchanger and the second plate heat exchanger are sequentially connected to the third circulation pump assembly water distributor, the user end, and the water collector to form a circulation loop.

[0011] In an optional embodiment, the chiller includes a first chiller, a second chiller, and a third chiller connected in parallel;

[0012] The chilled water sides of the first chiller, the second chiller and the third chiller are sequentially connected to the third circulation pump assembly, the water distributor, the user end and the water collector to form a circulation loop.

[0013] In an optional embodiment, the chilled water sides of the first chiller, the second chiller, and the third chiller are sequentially connected to the first circulation pump assembly and the fire energy storage tank to form a circulation loop;

[0014] The chilled water sides of the first chiller, the second chiller and the third chiller are sequentially connected to the second circulation pump assembly and the newly built energy storage tank to form a circulation loop.

[0015] In an optional embodiment, the cooling water sides of the first chiller, the second chiller and the third chiller are sequentially connected to the fourth circulation pump assembly and the cooling tower assembly to form a circulation loop.

[0016] In an optional embodiment, a water replenishment component and a water quality online monitoring system are provided on the circulation loop at the user end.

[0017] In an optional embodiment, the first circulation pump assembly, the second circulation pump assembly, the third circulation pump assembly and the fourth circulation pump assembly each include a plurality of circulation pumps.

[0018] In an optional embodiment, the cooling tower assembly includes a plurality of cooling towers.

[0019] The beneficial effects of the present invention are:

[0020] The refrigeration system utilizes the chiller to operate during the nighttime low electricity consumption period to store energy for the fire energy storage tank and / or the newly built energy storage tank. During the daytime peak and high-peak periods, the energy stored in the fire energy storage tank and / or the newly built energy storage tank is first used to exchange heat with the heat exchanger component to provide cooling for the user end. After the energy stored in the fire energy storage tank and / or the newly built energy storage tank is exhausted, the chiller is used to exchange heat with the user end for cooling, thereby reducing cooling costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the principle of a water storage refrigeration system provided in one embodiment of the present invention.

[0023] Among them, the accompanying drawings are marked as follows:

[0024] 1- Fire-fighting energy storage tank, 2- New energy storage tank, 3- First circulating pump assembly, 4- Second circulating pump assembly, 5- First chiller, 6- Second chiller, 7- Third chiller, 8- First plate heat exchanger, 9- Second plate heat exchanger, 10- Water collector, 11- Water distributor, 12- Cooling tower assembly, 13- Third circulating pump assembly, 14- Water replenishment assembly, 15- Water quality online monitoring system, 16- Fourth circulating pump assembly. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on this technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, and "several" means any number including one, unless otherwise clearly and specifically defined.

[0027] Please see the attached Figure 1 This embodiment provides a water-cooled storage refrigeration system, characterized by comprising: a water storage tank, a heat exchanger assembly, and a chiller; the water storage tank is connected to the cold-discharging side of the heat exchanger assembly to form a circulation loop, and the user side of the heat exchanger assembly is connected to the user end to form a circulation loop; the chilled water side of the chiller is connected to the water storage tank to form a circulation loop, and the chilled water side of the chiller is connected to the user end to form a circulation loop; and the cooling water side of the chiller is connected to the cooling tower assembly to form a circulation loop. This refrigeration system utilizes the chiller to operate during nighttime periods of low electricity consumption to store energy (primarily for cold storage) for the fire-fighting water storage tank and / or the newly built water storage tank. During daytime peak and peak periods, the energy in the fire-fighting water storage tank and / or the newly built water storage tank is first used to exchange heat with the heat exchanger assembly to cool the user end. After the energy in the fire-fighting water storage tank and / or the newly built water storage tank is exhausted, the chiller is used to exchange heat with the user end to cool the user end, thereby reducing refrigeration costs.

[0028] Specifically, the accumulator water tank includes a fire accumulator water tank 1 and a newly built accumulator water tank 2 connected in parallel; the heat exchanger assembly includes a first plate heat exchanger 8 and a second plate heat exchanger 9 connected in parallel; after the fire accumulator water tank 1 is connected to the first circulation pump assembly 3, it is connected to the cooling side of the first plate heat exchanger 8 and the second plate heat exchanger 9, respectively, to form a circulation loop; after the newly built accumulator water tank 2 is connected to the second circulation pump assembly 4, it is connected to the cooling side of the first plate heat exchanger 8 and the second plate heat exchanger 9, respectively, to form a circulation loop. The first circulation pump assembly 3 and the second circulation pump assembly 4 each include multiple circulation pumps to provide power for the circulation of the medium, preferably water. Through the above circuit configuration, the fire accumulator water tank 1 and the newly built accumulator water tank 2 can each provide medium for the first plate heat exchanger 8 and the second plate heat exchanger 9 independently, or they can jointly provide medium for the first plate heat exchanger 8 and the second plate heat exchanger 9. Those skilled in the art can choose according to the load conditions at the user end to ensure the cooling effect.

[0029] Furthermore, the user-side of first plate heat exchanger 8 and second plate heat exchanger 9 are sequentially connected to the water distributor 11 of a third circulating pump assembly 13, the user end, and the water collector 10, forming a circulation loop. Multiple third circulating pump assemblies 13 are provided to provide power for the medium circulation. This loop enables the use of fire accumulator tank 1 and / or newly built accumulator tank 2 to provide cooling temperature for the user end.

[0030] It should be noted that the chiller includes a first chiller 5, a second chiller 6, and a third chiller 7 connected in parallel. The chilled water sides of the first chiller 5, the second chiller 6, and the third chiller 7 are connected in sequence to the third circulating pump assembly 13, the water distributor 11, the user end, and the water collector 10 to form a circulation loop. Through the above loop, heat exchange refrigeration between the chiller and the user end is achieved after the energy stored in the fire energy storage tank 1 and / or the newly built energy storage tank 2 is exhausted. The first chiller 5, the second chiller 6, and the third chiller 7 can work individually, partially, or simultaneously, and can be selected according to the load conditions of the user end.

[0031] In addition, the chilled water sides of the first chiller 5, the second chiller 6, and the third chiller 7 are all connected in sequence to the first circulation pump assembly 3 and the fire energy storage tank 1, respectively, to form a circulation loop; the chilled water sides of the first chiller 5, the second chiller 6, and the third chiller 7 are all connected in sequence to the second circulation pump assembly 4 and the newly built energy storage tank 2, respectively, to form a circulation loop. Through the above circuit settings, the chillers can be used to operate during the low electricity consumption period at night to store energy for the fire energy storage tank 1 and / or the newly built energy storage tank 2. The first chiller 5, the second chiller 6, and the third chiller 7 can work individually, partially, or simultaneously, depending on the energy storage status of the fire energy storage tank 1 and / or the newly built energy storage tank 2.

[0032] It should be noted that the cooling water sides of the first chiller 5, second chiller 6, and third chiller 7 are sequentially connected to the fourth circulating pump assembly 16 and the cooling tower assembly 12, respectively, to form a circulation loop. Multiple fourth circulating pump assemblies 16 are provided to provide power for the medium circulation. Furthermore, the cooling tower assembly 12 includes multiple cooling towers. These multiple cooling towers exchange heat with the chillers, removing the heat energy generated by the chillers.

[0033] Finally, the user-side circulation loop is equipped with a water replenishment component 14 and a water quality online monitoring system 15. The water replenishment component 14 is used to replenish the loop after the user-side loop leak is repaired, and the water quality online monitoring system 15 monitors the temperature and other parameters of the user-side medium.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water storage refrigeration system, characterized in that: include: Energy storage water tank, heat exchanger assembly and chiller; the energy storage water tank is connected to the cold release side of the heat exchanger assembly to form a circulation loop, and the user side of the heat exchanger assembly is connected to the user end to form a circulation loop; The chilled water side of the chiller is connected to the energy storage tank to form a circulation loop, and the chilled water side of the chiller is connected to the user end to form a circulation loop; the cooling water side of the chiller is connected to the cooling tower assembly to form a circulation loop.

2. The water storage refrigeration system according to claim 1, characterized in that: The energy storage water tank includes a fire energy storage water tank (1) and a newly built energy storage water tank (2) connected in parallel; the heat exchanger assembly includes a first plate heat exchanger (8) and a second plate heat exchanger (9) connected in parallel; After the fire energy storage water tank (1) is connected to the first circulation pump assembly (3), it is connected to the cold release sides of the first plate heat exchanger (8) and the second plate heat exchanger (9) to form a circulation loop; After the newly built energy storage water tank (2) is connected to the second circulation pump assembly (4), it is connected to the cooling sides of the first plate heat exchanger (8) and the second plate heat exchanger (9) to form a circulation loop.

3. The water storage refrigeration system according to claim 2, characterized in that: The user sides of the first plate heat exchanger (8) and the second plate heat exchanger (9) are sequentially connected to the third circulation pump assembly (13), the water distributor (11), the user end, and the water collector (10) to form a circulation loop.

4. The water storage refrigeration system according to claim 2, characterized in that: The chiller comprises a first chiller (5), a second chiller (6) and a third chiller (7) connected in parallel; The chilled water sides of the first chiller (5), the second chiller (6) and the third chiller (7) are sequentially connected to the third circulation pump assembly (13), the water distributor (11), the user end and the water collector (10) to form a circulation loop.

5. The water storage refrigeration system according to claim 4, characterized in that: The chilled water sides of the first chiller (5), the second chiller (6), and the third chiller (7) are sequentially connected to the first circulation pump assembly (3) and the fire energy storage tank (1) to form a circulation loop; The chilled water sides of the first chiller (5), the second chiller (6) and the third chiller (7) are sequentially connected to the second circulation pump assembly (4) and the newly built energy storage tank (2) to form a circulation loop.

6. The water storage refrigeration system according to claim 4, characterized in that: The cooling water sides of the first chiller (5), the second chiller (6) and the third chiller (7) are sequentially connected to the fourth circulation pump assembly (16) and the cooling tower assembly (12) to form a circulation loop.

7. The water storage refrigeration system according to claim 4, characterized in that: The user-side circulation loop is provided with a water replenishment component (14) and a water quality online monitoring system (15).

8. The water storage refrigeration system according to claim 4, characterized in that: The first circulation pump assembly (3), the second circulation pump assembly (4), the third circulation pump assembly (13) and the fourth circulation pump assembly (16) each include a plurality of circulation pumps.

9. The water storage refrigeration system according to claim 1, characterized in that: The cooling tower assembly (12) includes a plurality of cooling towers.

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