Energy-saving circulating cooling water cooling system
By introducing ice storage bags into the circulating cooling water system, the cold energy is stored by utilizing the difference in electricity prices and the heat is absorbed by phase change during peak hours. This solves the problem of high power consumption during peak hours in traditional systems, achieving energy saving, consumption reduction, and efficient cooling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional circulating cooling water systems consume a lot of electricity during peak hours and lack energy storage and regulation mechanisms, leading to power shortages and energy waste.
Design an energy-saving circulating cooling water cooling system that includes ice storage bags. Utilize the difference in electricity prices to store the cooling capacity of the cooling medium during off-peak hours, and utilize the phase change of the cooling medium to absorb heat during peak hours, thereby assisting the chiller in cooling and reducing the number of chillers in operation.
It effectively reduces energy consumption during peak hours, improves the cooling speed and effect of cooling water, reduces operating costs, and ensures the stable operation of process equipment.
Smart Images
Figure CN224065762U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to industrial cooling technical field, concretely relates to a kind of energy-saving circulating cooling water cooling system. BACKGROUND
[0002] In industrial production, a large amount of heat will be generated in the operation process of numerous process equipment, and the circulating cooling water system needs to be used for cooling to ensure the normal operation of the equipment and the product quality. The traditional circulating cooling water cooling system usually only relies on the cooling water to be cooled by the water chiller. During the peak period of electricity consumption, the water chiller continuously operates at high load, which not only consumes a large amount of electric energy, resulting in a significant increase in operating cost, but also may cause a problem of reduced refrigeration efficiency due to the shortage of power supply, affecting the cooling effect of the equipment. In addition, the single water chiller refrigeration mode lacks effective energy storage and regulation mechanism, and cannot fully utilize the cheap electricity during the off-peak period, resulting in waste of energy and increase in cost. Therefore, it is of great practical significance to develop an energy-saving circulating cooling water cooling system that can effectively reduce energy consumption and improve energy utilization efficiency. SUMMARY
[0003] The utility model aims at providing an energy-saving circulating cooling water cooling system to solve the problems mentioned in the background.
[0004] The utility model discloses a technical scheme adopted to solve its technical problems: an energy-saving circulating cooling water cooling system, comprising a water supply main pipe of cooling water, and a group of process equipment connected in parallel on the water supply main pipe, a cooling water storage tank is connected to the water outlet end of the water supply main pipe, a group of ice storage bags are further arranged in the cooling water storage tank, the ice storage bags contain cooling medium, and the freezing point of the cooling medium is higher than that of the cooling water, a group of water chillers are connected in parallel to the water outlet end of the cooling water storage tank, the water outlet end of the water chiller is connected to the water inlet end of the water supply main pipe, and a cooling water transfer pump is further arranged on the water supply main pipe.
[0005] Further, the ice storage bag comprises a shell, a cavity for storing cooling medium arranged in the shell, an injection port communicated with the cavity is arranged on the shell, and a sealable cover is arranged on the injection port.
[0006] In order to improve the heat exchange efficiency, the ice storage bag is in a flat structure.
[0007] Preferably, a placing rack for spacing the ice storage bags is arranged in the cooling water storage tank.
[0008] To realize installation, the placing frame comprises a support arranged in the cooling water storage tank, a group of clamping seats for clamping the ice storage bag arranged around the axis of the support, the clamping seat comprising an upper clamping plate arranged on the support and a lower clamping plate arranged below the upper clamping plate, the lower end of the upper clamping plate being provided with an upper clamping groove matched with the thickness of the ice storage bag, and the upper end of the lower clamping plate being provided with a lower clamping groove matched with the thickness of the ice storage bag.
[0009] To facilitate installation and maintenance, the side wall of the cooling water storage tank is provided with an openable sealing door, and the support is rotatably arranged in the cooling water storage tank.
[0010] To realize rotation, two rotating seats matched with the two ends of the support are arranged in the cooling water storage tank, and rotating holes matched with the two ends of the support are arranged on the two rotating seats.
[0011] To facilitate installation and dismounting, a group of rollers are arranged on the lower clamping plate at the bottom of the lower clamping groove.
[0012] The utility model discloses make full use of the price difference of electricity in valley time period and peak time period, open many cold water machines in valley time period and store the cold capacity of cooling medium, reduce the operation quantity of cold water machine in peak time period, rely on the phase change of cooling medium and absorb heat, effectively reduce the energy consumption of system in peak time period, thereby reduce the overall operation cost.
[0013] The utility model discloses make full use of the price difference of electricity in valley time period and peak time period, open many cold water machines in valley time period and store the cold capacity of cooling medium, reduce the operation quantity of cold water machine in peak time period, rely on the phase change of cooling medium and absorb heat, effectively reduce the energy consumption of system in peak time period, thereby reduce the overall operation cost. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the front view of the utility model.
[0015] Figure 2 It is the sectional view of ice storage bag in the utility model.
[0016] Figure 3 It is the front view of the utility model Figure 2 It is the enlarged schematic diagram of partial A in the utility model.
[0017] Figure 4 It is the perspective view of cooling water storage tank in the utility model.
[0018] Figure 5 It is the perspective view of internal structure of cooling water storage tank in the utility model.
[0019] Figure 6It is the perspective view of the clamping seat in the utility model.
[0020] Figure 7 It is the front view of the upper clamping plate cooperating with the ice storage bag in the utility model.
[0021] Figure 8 It is the front view of the lower clamping plate cooperating with the ice storage bag in the utility model.
[0022] Figure 9 It is the connection schematic view of the cooling water storage tank and the temporary storage tank in the utility model. DETAILED DESCRIPTION
[0023] As Figures 1 to 9 shown in the figure, an energy-saving circulating cooling water cooling system, including the water supply main pipe 1 of cooling water, and a group of process equipment 2 are connected in parallel on the water supply main pipe 1, the water outlet end of the water supply main pipe 1 is connected and arranged with the cooling water storage tank 3, a group of ice storage bags 6 are further arranged in the cooling water storage tank 3, the ice storage bag 6 is provided with cooling medium 7, and the freezing point of the cooling medium 7 is higher than the freezing point of the cooling water, the cooling water after being used by each process equipment 2 flows into the water supply main pipe 1, flows into the cooling water storage tank 3 through the water supply main pipe 1, and the temperature of the cooling water is preliminarily reduced through heat exchange with the cooling medium 7 in the ice storage bag 6. The water outlet end of the cooling water storage tank 3 is connected in parallel with three water chillers 4, the water outlet end of the water chiller 4 is connected with the water inlet end of the water supply main pipe 1, and the water supply main pipe 1 is further provided with a cooling water transfer pump 5. The cooling water after preliminary cooling flows into the water supply main pipe 1 through the water outlet end of the water chiller 4, and under the action of the cooling water transfer pump 5, is supplied to each process equipment 2 again, forming a cycle.
[0024] Working principle: during the low electricity consumption period, the electricity price is the cheapest period of a day, three water chillers 4 are started at the same time, the temperature of the cooling water in the entire circulating system is reduced to below the freezing point of the cooling medium 7 through the three water chillers 4, and the temperature of the cooling water is ensured to be higher than the freezing point of the cooling water. At this time, since the temperature of the cooling water is lower than the freezing point of the cooling medium 7, the cooling medium 7 gradually condenses into a solid state in the ice storage bag 6, and a phase change occurs. In this phase change process, heat energy is released; during the electricity peak period, the electricity price is the most expensive period of a day, two water chillers 4 are turned off, and only one water chiller 4 is used to continue cooling and cooling the cooling water. At this time, the cooling water absorbing the heat of the process equipment returns to the cooling water storage tank 3 and exchanges heat with the solid cooling medium 7. The cooling medium 7 absorbs the heat of the cooling water and gradually changes from a solid state to a liquid state, a phase change occurs, and a large amount of heat energy is absorbed in this phase change process, thereby assisting the water chiller 4 in cooling the cooling water. The utility model can fully utilize the price difference, realize the purpose of energy saving and consumption reduction, and also ensure the effective cooling of the process equipment.
[0025] Specifically, the ice storage bag 6 comprises a shell 61, a chamber 62 for storing the cooling medium 7 arranged in the shell 61, an injection port 63 arranged on the shell 61 and communicating with the chamber 62, an openable sealing cover 64 arranged on the injection port 63, the sealing cover 64 and the injection port 63 being connected and sealed by inner and outer screw threads, and a sealing gasket 641 arranged in the sealing cover 64 and abutting against the mouth of the injection port 63. In order to improve the heat exchange efficiency, the ice storage bag 6 has a flat structure.
[0026] In order to facilitate the installation and maintenance of the ice storage bag 6, the side wall of the cooling water storage tank 3 is provided with an openable sealing door 31, the inner height of the sealing door 31 is greater than the height of the ice storage bag 6, a placement rack 8 for spacing the ice storage bags 6 is arranged in the cooling water storage tank 3, and a water passing gap is left between the adjacent two ice storage bags 6, which can further ensure the heat exchange efficiency. The placement rack 8 comprises a support column 81 rotatably arranged in the cooling water storage tank 3, and a group of clamping seats 82 arranged around the axis of the support column 81 and used for clamping the ice storage bag 6. The clamping seat 82 comprises an upper clamping plate 821 arranged on the support column 81, and a lower clamping plate 822 located below the upper clamping plate 821, the upper and lower clamping plates 821 and 822 are respectively fixed to the upper and lower ends of a fixed plate 823, and the fixed plate 823 is fixed to the support column 81 by a group of support arms 824. The lower end of the upper clamping plate 821 is provided with an upper clamping groove 8211 matched with the thickness of the ice storage bag 6, the upper end of the lower clamping plate 822 is provided with a lower clamping groove 8221 matched with the thickness of the ice storage bag 6, a group of rollers 8222 are arranged on the lower clamping plate 822 and located at the bottom of the lower clamping groove 8221, and a locking bolt 8223 is further arranged on the lower clamping plate 822 and used for locking the ice storage bag 6 in the lower clamping groove 8221. During installation, the sealing door 31 is opened, the clamping seat 82 to be installed is rotated to the sealing door 31, then the upper and lower ends of the ice storage bag 6 are clamped into the upper and lower clamping grooves 8211 and 8221 respectively, and the locking bolt 8223 is pushed in and locked, so that the installation is completed. When disassembly and maintenance are needed, the ice storage bag 6 to be maintained is rotated to the sealing door 31, the locking bolt 8223 is loosened, and then the ice storage bag 6 is pulled out, so that the disassembly is completed. When the ice storage bag 6 is installed, pushed in and disassembled, the rollers 8222 facilitate the pushing and pulling of the ice storage bag 6. In order to realize the rotation of the support column 81, two rotating seats 32 matched with the two ends of the support column 81 are arranged in the cooling water storage tank 3, rotating holes 321 matched with the two ends of the support column 81 are arranged on the two rotating seats 32, the support column 81 can rotate in the two rotating holes 321, and a motor 83 is arranged at one end of the support column 81, so that the rotation of the support column 81 is controlled by the motor 83.
[0027] Before opening the sealing door 31, the cooling water in the cooling water storage tank 3 is pumped to the temporary storage tank 20 through the collecting pipe 34, and after the ice storage bag 6 is installed or removed, the sealing door 31 is closed, and then the cooling water is pumped back to the cooling water storage tank 3 through the backflow pipe 35, and the collecting pipe 34 and the backflow pipe 35 are both provided with a transfer pump.
[0028] The specific connection structure of the three water chillers 4 is as follows: the water outlet end of the cooling water storage tank 3 is connected with a delivery pipe 33, the water outlet end of the delivery pipe 33 is connected with three water inlet branch pipes 41, the water outlet end of each water inlet branch pipe 41 is connected with one water chiller 4, the water outlet end of each water chiller 4 is connected with one water outlet branch pipe 42, the water outlet end of each water outlet branch pipe 42 is connected with the water inlet end of the water supply main pipe 1, and each water inlet branch pipe 41 and each water outlet branch pipe 42 is provided with a switch valve 10. It should be noted that the water chiller for industrial cooling water is prior art, and is not described in detail here.
[0029] The above has been described by way of example with reference to the drawings. Obviously, the specific implementation of the present application is not limited to the above-mentioned manner. As long as various non-essential improvements are made by adopting the method concept and technical solution of the present application, or the above-mentioned concept and technical solution of the present application is directly applied to other occasions without improvement, they are all within the protection scope of the present application.
Claims
1. An energy-saving circulating cooling water cooling system, comprising a cooling water supply main (1) and a group of process equipment (2) connected in parallel to the supply main (1), characterized in that: The water outlet end of the water supply main pipe (1) is connected with a cooling water storage tank (3), a group of ice storage bags (6) are arranged in the cooling water storage tank (3), the ice storage bags (6) contain cooling medium (7), the freezing point of the cooling medium (7) is higher than that of the cooling water, the water outlet end of the cooling water storage tank (3) is connected with a group of water coolers (4) in parallel, the water outlet end of the water cooler (4) is connected with the water inlet end of the water supply main pipe (1), and the water supply main pipe (1) is further provided with a cooling water transfer pump (5).
2. The energy-saving circulating cooling water cooling system of claim 1, wherein: The ice storage bag (6) comprises a shell (61), a cavity (62) for storing the cooling medium (7) is arranged in the shell (61), the shell (61) is provided with an injection port (63) in communication with the cavity (62), and the injection port (63) is provided with an openable sealing cover (64).
3. The energy-saving circulating cooling water cooling system of claim 2, wherein: The ice storage bag (6) has a flat structure.
4. The energy-efficient recirculating cooling water cooling system of claim 1, wherein: The cooling water storage tank (3) is provided with a placing rack (8) for spacing the ice storage bags (6).
5. The energy-saving circulating cooling water cooling system of claim 4, wherein: The placing rack (8) comprises a support column (81) arranged in the cooling water storage tank (3) and a group of clamping seats (82) arranged around the axis of the support column (81) and used for clamping the ice storage bags (6), the clamping seat (82) comprises an upper clamping plate (821) arranged on the support column (81) and a lower clamping plate (822) arranged below the upper clamping plate (821), the lower end of the upper clamping plate (821) is provided with an upper clamping groove (8211) matched with the thickness of the ice storage bag (6), and the upper end of the lower clamping plate (822) is provided with a lower clamping groove (8221) matched with the thickness of the ice storage bag (6).
6. The energy-saving circulating cooling water cooling system of claim 5, wherein: The side wall of the cooling water storage tank (3) is provided with an openable sealing door (31), and the support column (81) is rotatably arranged in the cooling water storage tank (3).
7. The energy-efficient recirculating cooling water cooling system of claim 6, wherein: The cooling water storage tank (3) is provided with two rotating seats (32) matched with both ends of the support column (81), and the two rotating seats (32) are provided with rotating holes (321) matched with both ends of the support column (81).
8. The energy-saving circulating cooling water cooling system of claim 5, wherein: A group of rollers (8222) are arranged on the bottom of the lower clamping groove (8221) of the lower clamping plate (822).