Coating electrophoresis energy storage type cooling device and control system
By designing a coating electrophoretic energy storage cooling device, and using energy storage tanks and control systems to adjust the storage and extraction of frozen water, the problem of cooling of electrophoretic process lines in the coating workshop is solved throughout the year, and the non-trough electricity period is achieved Reduced electricity costs and improved refrigerator operation efficiency.
Patent Information
- Application Number
- CN202420173548.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-01-24
AI Technical Summary
During the 24-hour continuous operation of the existing electrophoresis process line in the coating workshop, it requires cooling throughout the year, which causes the refrigerator to consume a lot of electricity during non-trough electricity periods. It is troublesome to set up a backup power supply for the refrigerator, which affects energy conservation and system reliability. sex.
Design a coating electrophoretic energy storage cooling device, including energy storage tanks, refrigeration machines, water-water heat exchangers, refrigeration water pumps and energy storage tank refrigeration water pumps, and adjust the electric valves and electric threes through the control system. The opening and rotation speed of the valve and refrigeration water pump can realize the storage and extraction of refrigeration water and reduce electricity consumption during non-trough electricity periods.
During the low-gross electricity period, the energy storage tank is stored in cooling, and the water-water heat exchanger is used to supply cooling for coating electrophoresis. During the non-gross electricity period, only the energy storage tank refrigeration water pump needs to be turned on to extract the refrigerated water for cooling, reducing electricity costs and reducing electricity consumption. The utilization rate of backup power supply improves the operating efficiency of the refrigerator and has good energy-saving effects and economic benefits.
Smart Images
Figure CN222438297U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage type cooling, in particular to a coating electrophoresis energy storage type cooling device and a control system. Background Art
[0002] The electrophoretic process line in the painting workshop operates continuously for 24 hours a day throughout the year. The electrophoretic paint used in the electrophoretic process line must be guaranteed to work at an appropriate temperature. When the electrophoretic process line is working stably, the temperature of the electrophoretic paint will increase with the room temperature, and the process equipment will generate heat. This heat needs to be taken away in time to ensure that the temperature of the electrophoretic paint is within an appropriate range.
[0003] At present, the electrophoresis process line in the painting workshop directly uses a refrigerator to prepare chilled water, and provides cold water of about 20°C for the electrophoresis paint through a water-water heat exchanger. Since the electrophoresis process in the painting workshop requires 24-hour cooling throughout the year, a backup power supply must be set for the system preparing chilled water to prevent power outages; turning on the refrigerator during non-peak hours requires a lot of electricity costs, which is not conducive to energy conservation, and setting up a backup power supply for the refrigerator is also troublesome. Utility Model Content
[0004] The purpose of the utility model is to solve the above technical problems and to propose a coating electrophoresis energy storage type cooling device and control system.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A coating electrophoresis energy storage type cooling device comprises an energy storage tank, a refrigerator, a water-water heat exchanger, a refrigerator chilled water pump, an energy storage tank chilled water pump and an electric valve, an electric three-way regulating valve, a check valve, a filter, and a temperature sensor. The energy storage tank is connected to the refrigerator through a pipeline, and the electric valve and temperature sensor are installed on the pipeline between the energy storage tank and the refrigerator. The refrigerator is connected to the refrigerator chilled water pump through a pipeline. The temperature sensor and the electric three-way regulating valve are installed on the pipeline between the refrigerator, the energy storage tank and the refrigerator chilled water pump. The energy storage tank chilled water pump and the filter are connected through a pipeline. The electric valve and the check valve are installed on the pipeline between the energy storage tank chilled water pump and the refrigerator. The filter is connected to the water-water heat exchanger through a pipeline, and the water-water heat exchanger is connected to a coating electrophoresis workshop.
[0007] Preferably, the energy storage tank adopts a pressure tank with a design pressure of 0.8MPa, which is connected in series with the refrigerator to store the chilled water prepared by the refrigerator in the tank body and extract the chilled water when needed. The cold storage temperature ranges from 18°C to 4°C, and the cold storage capacity is large.
[0008] The utility model also discloses a control system for a coating electrophoresis energy storage type cooling device, the control objects of which include a refrigerator, a refrigerator chilled water pump, an energy storage tank chilled water pump, electric valves before and after the refrigerator, electric valves before and after the energy storage tank chilled water pump, and the start and stop of an electric three-way regulating valve.
[0009] Preferably, the detection parameters of the control system include the chilled water temperature at the outlet of the energy storage tank, the water supply temperature of the water-to-water heat exchanger coating electrophoresis process structure, and the return water temperature of the water-to-water heat exchanger energy storage structure.
[0010] Preferably, the control system compares the temperature detection value with the set value and then sends a signal to adjust the opening of the electric three-way regulating valve on the chilled water pipeline of the water-water heat exchanger energy storage structure or the speed of the energy storage tank chilled water pump motor.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] The utility model is applied in engineering practice. During the off-peak electricity period, the energy storage tank is cooled and a water-to-water heat exchanger is used to supply cooling for the coating electrophoresis process. During the non-off-peak electricity period, only the energy storage tank refrigeration water pump needs to be turned on to extract the chilled water in the energy storage tank and supply cooling for the coating electrophoresis process through the water-to-water heat exchanger. The initial investment in engineering practice is relatively low. After reasonable operation, the operation effect of the refrigerator can be improved, the electricity cost during the non-off-peak electricity period can be saved, and the utilization rate of the standby power supply during the non-off-peak electricity period can be reduced. The utility model has good energy-saving effect and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of a coating electrophoresis energy storage type cooling device.
[0014] Figure 2 It is the control principle diagram of the control system of the coating electrophoresis energy storage type cooling device.
[0015] In the figure: 1 energy storage tank, 2 refrigerator, 3 water-water heat exchanger, 4 refrigerator chilled water pump, 5 energy storage tank chilled water pump, 6 electric valve, 7 electric three-way regulating valve, 8 check valve, 9 filter, 10 temperature sensor. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0017] Reference Figure 1-2A coating electrophoresis energy storage cooling device includes an energy storage tank 1, a refrigerator 2, a water-water heat exchanger 3, a refrigerator chilled water pump 4, an energy storage tank chilled water pump 5 and an electric valve 6, an electric three-way regulating valve 7, a check valve 8, a filter 9, and a temperature sensor 10. The energy storage tank 1 is connected to the refrigerator 2 through a pipeline, and the electric valve 6 and the temperature sensor 10 are installed on the pipeline between the energy storage tank 1 and the refrigerator 2. The refrigerator 2 is connected to the refrigerator chilled water pump 4 through a pipeline. The temperature sensor 10 and the electric three-way regulating valve 7 are installed on the pipeline between the refrigerator 2, the energy storage tank 1 and the refrigerator chilled water pump 4. The chilled water pump 5 and the filter 9 are connected by a pipeline, the electric valve 6 and the check valve 8 are installed on the pipeline between the energy storage tank chilled water pump 5 and the refrigerator 2, the filter 9 is connected to the water-water heat exchanger 3 by a pipeline, and the water-water heat exchanger 3 is connected to the coating electrophoresis workshop; the refrigerator 2 is used to prepare chilled water, the refrigerator chilled water pump 4 is a fixed frequency water pump, the energy storage tank chilled water pump 5 is a variable frequency water pump, the energy storage tank 1 adopts a pressure tank with a designed pressure of 0.8MPa, which is connected in series with the refrigerator 2 to store the chilled water prepared by the refrigerator 2 in the tank body and extract the chilled water when needed, the cold storage temperature ranges from 18°C to 4°C, and the cold storage capacity is large.
[0018] The utility model also discloses a control system for a coating electrophoresis energy storage type refrigeration device, the control objects of which include a refrigerator 2, a refrigerator chilled water pump 4, an energy storage tank chilled water pump 5, electric valves 6 before and after the refrigerator, electric valves 6 before and after the energy storage tank chilled water pump, and the start and stop of an electric three-way regulating valve 7; detection parameters of the control system include the chilled water temperature at the outlet of the energy storage tank 1, the water supply temperature of the coating electrophoresis process structure of the water-water heat exchanger 3, and the return water temperature of the energy storage structure of the water-water heat exchanger 3; the control system compares the temperature detection value with the set value and then sends a signal to adjust the opening of the electric three-way regulating valve 7 on the chilled water pipeline of the energy storage structure of the water-water heat exchanger 3 or the speed of the motor of the energy storage tank chilled water pump 5.
[0019] The utility model comprises an energy storage structure and a coating electrophoresis process structure. When the energy storage structure stores energy during off-peak electricity period, the electric valve 6Df3, the energy storage tank chilled water pump 5B2 and the electric valve 6Df4 are closed. From the refrigerator 2, the water flow direction is in the order of the electric valve 6Df1, the energy storage tank 1, the temperature sensor 10T1, the water-water heat exchanger 3, the temperature sensor 10T3, the electric three-way regulating valve 7Df5, the electric valve 6Df2, the filter 9, the refrigerator chilled water pump 4B1, the check valve 8 and then returns to the refrigerator 2; the pipeline where the electric three-way regulating valve 7Df5 is located is a bypass pipeline, and its function is to adjust the opening of the bypass pipeline electric three-way regulating valve 7Df5 by comparing the measured value of the temperature sensor 10T2 with the set value when the cold water use demand of the coating electrophoresis process structure increases or decreases, so as to ensure that the water supply temperature of the coating electrophoresis process structure is within a suitable range. If the temperature of the temperature sensor 10T1 reaches 4°C, the refrigeration is closed and the energy storage is completed.
[0020] When the energy storage structure releases energy during non-off-peak power periods, the electric valve 6Df1, refrigerator 2, refrigerator chilled water pump 4B1, electric valve 6Df2, and electric three-way regulating valve 7Df5 are closed, and the water flows from the energy storage tank 1 in the order of temperature sensor 10T1, water-water heat exchanger 3, temperature sensor 10T3, electric valve 6Df4, filter 9, energy storage tank chilled water pump 5B2, check valve 8, and electric valve 6Df3, and then returns to the energy storage tank 1; the energy storage tank chilled water pump 5 is a variable frequency water pump, and its function is to adjust the speed of the energy storage tank chilled water pump 5B2 by frequency conversion when the demand for cold water use of the coating electrophoresis process structure increases or decreases by comparing the measured value of the temperature sensor 10T2 with the set value. If the temperature of the temperature sensor 10T1 reaches 18°C, the system automatically switches to the chiller 2 energy storage mode.
[0021] The working principle of the utility model is as follows: the electrophoresis process in the painting workshop requires cold water 24 hours a day throughout the year. During the off-peak electricity period, the refrigerator 2 and the refrigerator chilled water pump 4 are turned on to prepare chilled water, store cold for the energy storage tank 1 and supply cold water to the painting electrophoresis process through the water-water heat exchanger 3; during the non-off-peak electricity period, the refrigerator 2 and the refrigerator chilled water pump 4 are turned off, the energy storage tank chilled water pump 5 is turned on, and the painting electrophoresis process is supplied with cold water through the water-water heat exchanger 3.
[0022] The detection contents of the control system of the utility model include: normal operation and failure of the refrigerator, refrigerator chilled water pump, and energy storage tank chilled water pump; chilled water temperature at the outlet of the energy storage tank, water supply temperature of the water-water heat exchanger coating electrophoresis process structure, and return water temperature of the water-water heat exchanger energy storage structure. The external circuit table of the control system PLC is shown in Table 1;
[0023] Table 1. Control system PLC external circuit table
[0024]
[0025]
[0026] When the energy storage structure stores energy during the off-peak period, by comparing the measured value of the coating electrophoresis process structure water supply temperature 10T2 with the set value, the opening of the electric three-way regulating valve 7Df5 is adjusted in a proportional integral control mode. When the temperature measurement value is higher than the set value, the opening of the electric three-way regulating valve 7Df5 is reduced, and when the temperature measurement value is lower than the set value, the opening of the electric three-way regulating valve 7Df5 is increased. When the energy storage structure releases energy during the non-off-peak period, by comparing the measured value of the coating electrophoresis process structure water supply temperature T2 with the set value, the start and stop and speed of the energy storage tank chilled water pump 5B2 are adjusted by frequency conversion. When the temperature measurement value is higher than the set value, the speed of the energy storage tank chilled water pump 5B2 is increased, and when the temperature measurement value is lower than the set value, the speed of the energy storage tank chilled water pump 5B2 is reduced. Ensure that the water supply temperature of the coating electrophoresis process structure is within an appropriate range.
[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A coating electrophoresis energy storage type cooling device, characterized in that: The invention comprises an energy storage tank (1), a refrigerator (2), a water-water heat exchanger (3), a refrigerator chilled water pump (4), an energy storage tank chilled water pump (5), an electric valve (6), an electric three-way regulating valve (7), a check valve (8), a filter (9), and a temperature sensor (10). The energy storage tank (1) is connected to the refrigerator (2) through a pipeline. The electric valve (6) and the temperature sensor (10) are installed on the pipeline between the energy storage tank (1) and the refrigerator (2). The refrigerator (2) and the refrigerator chilled water pump (4) are connected through a pipeline. The temperature sensor (10) and the electric three-way regulating valve (7) are installed on the pipeline between the refrigerator (2), the energy storage tank (1) and the refrigerator chilled water pump (4); the energy storage tank chilled water pump (5) and the filter (9) are connected through the pipeline; the electric valve (6) and the check valve (8) are installed on the pipeline between the energy storage tank chilled water pump (5) and the refrigerator (2); the filter (9) and the water-water heat exchanger (3) are connected through the pipeline; and the water-water heat exchanger (3) is connected to the coating electrophoresis workshop.
2. A coating electrophoresis energy storage type cooling device according to claim 1, characterized in that: The refrigerator (2) is used to prepare chilled water.
3. The coating electrophoresis energy storage type cooling device according to claim 1, characterized in that: The refrigeration water pump (4) of the refrigerator is a fixed frequency water pump.
4. The coating electrophoresis energy storage type cooling device according to claim 1, characterized in that: The energy storage tank refrigeration water pump (5) is a variable frequency water pump.
5. The coating electrophoresis energy storage type cooling device according to claim 1, characterized in that: The energy storage tank (1) is a pressure tank designed to withstand a pressure of 0.8 MPa, and is connected in series with the refrigerator (2) to store the chilled water prepared by the refrigerator (2) in the tank body and extract the chilled water when needed. The cold storage temperature ranges from 18° C. to 4° C., and the cold storage capacity is large.
6. A control system for a coating electrophoresis energy storage type cooling device, characterized in that: The control system controls the start and stop of a refrigerator (2), a refrigerator chilled water pump (4), an energy storage tank chilled water pump (5), electric valves (6) before and after the refrigerator, electric valves (6) before and after the energy storage tank chilled water pump, and an electric three-way regulating valve (7).
7. A control system for a coating electrophoresis energy storage type cooling device according to claim 6, characterized in that: The detection parameters of the control system include the chilled water temperature at the outlet of the energy storage tank (1), the water supply temperature of the coating electrophoresis process structure of the water-water heat exchanger (3), and the return water temperature of the energy storage structure of the water-water heat exchanger (3).
8. The control system of the coating electrophoresis energy storage type cooling device according to claim 6, characterized in that: The control system compares the temperature detection value with the set value and then sends a signal to adjust the opening of the electric three-way regulating valve (7) on the chilled water pipeline of the energy storage structure of the water-water heat exchanger (3) or the speed of the motor of the chilled water pump (5) of the energy storage tank.