Energy-saving device of refrigerating system
By introducing cooling water pools, cold water pools, production water pools and control components into the refrigeration system, and using PLC controllers and temperature transmitters to automatically switch electric valves, the problem of inconvenient manual mode switching of the refrigeration system in tire production is solved, and automatic control of winter and summer modes is achieved, which reduces energy consumption and improves system stability and temperature control accuracy.
Patent Information
- Application Number
- CN202422852730.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing refrigeration systems in tire production have problems such as inconvenient manual mode switching, complex operation, system temperature fluctuations and high energy consumption, and are unable to achieve flexible automatic control of winter and summer modes.
A refrigeration system energy-saving device was designed, which includes a cooling water tank, a cold water tank, a production water tank and control components. Automatic control is achieved using a PLC controller and a temperature transmitter. By switching the electric valve on and off, stable operation in a half-winter and half-summer mode is achieved, ensuring precise control of the circulating water temperature.
It realizes automatic and flexible control of the refrigeration system under different ambient temperatures, reduces energy consumption costs, improves the stability and ease of operation of the system, and ensures the stability and accuracy of the circulating water temperature.
Smart Images
Figure CN223448711U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of refrigeration equipment, in detail is a refrigeration system energy -conserving device. BACKGROUND
[0002] It is known that the power medium process standard required for production equipment is very strict in the tire production and manufacturing process, otherwise it will directly affect product quality. According to the different temperatures of the power medium used by production equipment, the refrigeration equipment (such as: refrigeration machine, circulating water pump, cooling tower, etc.) matched with the demand temperature is matched, in order to simultaneously do cost control well, according to the change of external environment temperature, timely start refrigeration equipment, to meet the cooling demand of production system equipment. When the external temperature is low, only part of the cooling tower equipment needs to be started, and the refrigeration machine does not need to be operated, which is the winter mode. When the external temperature is high, the refrigeration machine needs to be increased to run, and the summer mode is switched to. In order to facilitate the switching of the two modes, a plurality of manual control valves are installed in the system, and the two mode switching is realized by opening and closing the manual control valve. But this switching mode has several problems: (1) the manual valve needs to be operated by personnel, which tests the emergency response and disposal ability of the operator, and improper operation will cause system temperature fluctuation and affect product quality; (2) this mode is manually switched once a year, cannot realize automatic flexible control, and causes energy cost increase; (3) the existing technology can only run a single mode, cannot run two modes at the same time. SUMMARY
[0003] In order to overcome the shortcomings of the prior art, the utility model provides a refrigeration system energy -conserving device, can guarantee the stable circulating water temperature in system, water flow is stable, overcomes the problem such as artificial operation complex, system water temperature fluctuation in the existing circulating water temperature adjustment process.
[0004] The utility model discloses a technical scheme that solves its technical problem is: a refrigerating system energy -conserving device is equipped with cooling pool, cold water pool, production pool and control assembly, its characterized in that, cooling pool connects the water inlet of cooling circulating water pump, and the water outlet of cooling circulating water pump is connected with cooling tower and refrigerating machine through cooling tower water inlet electric valve and cooling water inlet refrigerating machine electric valve respectively, and the cooling water outlet of refrigerating machine is connected with cooling tower, and the water outlet of cooling tower is connected with cooling water pool and production pool through back cooling water pool electric valve and back production water pool electric valve respectively, and the water outlet of cooling tower is equipped with cooling backwater temperature transmitter, and the pool mouth between production pool and cooling water pool is connected through overflow pipe and communicates, and cold water pool is connected with refrigerating machine through cold water circulating water pump, and production pool is connected with the water inlet of plate heat exchanger through production circulating water pump and production water plate heat exchanger water inlet electric valve, and the water outlet of production circulating water pump and plate heat exchanger water outlet are equipped with plate heat exchanger bypass electric valve, and plate heat exchanger water outlet is also equipped with production water plate heat exchanger outlet temperature transmitter, and the water outlet of refrigerating machine is connected with central air conditioner, and is connected with plate heat exchanger through plate heat exchanger cold water electric valve, and the water outlet of plate heat exchanger is connected with back cold water pool.
[0005] The control assembly includes a PLC controller, a state indicator, a display panel, the PLC controller is connected with the state indicator, the display panel, a cooling backwater temperature transmitter, a production water plate heat exchanger outlet temperature transmitter, and back cooling water pool electric valves, back production water pool electric valves, plate heat exchanger cold water electric valves, production water plate heat exchanger water inlet electric valves, plate heat exchanger bypass electric valves, cooling tower water inlet electric valves and cooling water inlet refrigerating machine electric valves.
[0006] The utility model has the advantages that two modes can be operated simultaneously, i.e., a half winter and half summer mode, and the two modes can be operated without conflict, and the circulating water temperature control is more accurate and reliable, and the utility model has the advantages of reasonable structure, stable operation, simple operation and the like. BRIEF DESCRIPTION OF DRAWINGS
[0007] The utility model is further described below in connection with the drawings and examples.
[0008] Figure 1 The utility model discloses a structural schematic diagram.
[0009] 1. Cooling water pool, 2. Cold water pool, 3. Production water pool, 4. Cooling circulating water pump, 5. Cold water circulating water pump, 6. Production circulating water pump, 7. Refrigerator, 8. Central air conditioner, 9. Plate heat exchanger, 10. Cooling tower, 11. Cooling tower return water temperature transmitter, 12. Return cooling water pool electric valve, 13. Return production water pool electric valve, 14. Plate heat exchanger cold water electric valve, 15. Production water plate heat exchanger outlet temperature transmitter, 16. Cooling tower water inlet electric valve, 17. Cooling water refrigerator inlet electric valve, 18. Production water plate heat exchanger water inlet electric valve, 19. Plate heat exchanger bypass electric valve. DETAILED DESCRIPTION
[0010] In the figure, the utility model is equipped with cooling water pool 1, cold water pool 2 and production water pool 3, cooling water pool 1 is connected with the water inlet of cooling circulating water pump 4, the water outlet of cooling circulating water pump 4 is connected with cooling tower 10 through cooling tower water inlet electric valve 16, the water outlet of cooling circulating water pump 4 is connected with refrigerator 7 through cooling water refrigerator inlet electric valve 17, the cooling water outlet of refrigerator 7 is connected with cooling tower 10, the water outlet of cooling tower 10 is connected with cooling water pool 1 through return cooling water pool electric valve 12, the water outlet of cooling tower 10 is connected with production water pool 3 through return production water pool electric valve 13, the water outlet of cooling tower 10 is equipped with cooling tower return water temperature transmitter 11, production water pool 3 and cooling water pool 1 are connected through overflow pipe, cold water pool 2 is connected with refrigerator 7 through cold water circulating water pump 5, production water pool 3 is connected with the water inlet of plate heat exchanger 9 through production circulating water pump 6 and production water plate heat exchanger water inlet electric valve 18, plate heat exchanger bypass electric valve 19 is installed between the water outlet of production circulating water pump 6 and the water outlet of plate heat exchanger 9, production water plate heat exchanger outlet temperature transmitter 15 is installed in the water outlet of plate heat exchanger 9, the water outlet of refrigerator 7 is connected with central air conditioner 8 and plate heat exchanger 9 through plate heat exchanger cold water electric valve 14, and the water outlet of plate heat exchanger 9 is connected with cold water pool 2.
[0011] The control assembly comprises PLC controller, state indicating lamp, display panel, the PLC controller is connected with state indicating lamp, display panel, cooling tower return water temperature transmitter 11, production water plate heat exchanger outlet temperature transmitter 15 and return cooling water pool electric valve 12, return production water pool electric valve 13, plate heat exchanger cold water electric valve 14, production water plate heat exchanger water inlet electric valve 18, plate heat exchanger bypass electric valve 19, cooling tower water inlet electric valve 16 and cooling water refrigerator inlet electric valve 17 respectively, the state indicating lamp is the working state indicating lamp of the foregoing electric valve and the working state indicating lamp for indicating the working state of the whole device, the temperature value of the whole circulating water system is displayed and output through the display panel, and the on-off state of the electric valve also has display.
[0012] For the convenience of description, the opening and closing values of the electric valve controlled by the cooling tower backwater temperature transmitter 11 are set to 23 DEG C, and the opening and closing values of the electric valve controlled by the production water through plate heat exchanger outlet temperature transmitter 15 are set to 25 DEG C (the temperature can be set to PLC), and after the production water tank 3 is full, the cooling water tank 1 can be unidirectionally overflowed.
[0013] Winter mode: open the cooling tower water inlet electric valve 16, close the cooling water into the refrigerator electric valve 17, close the production water through plate heat exchanger water inlet valve 18, open the plate heat exchanger bypass valve 19 and the production water tank electric valve 13. The cooling water circulating pump 4 sends high-temperature water to the cooling tower 10 through the cooling tower water inlet electric valve 16, and the temperature of the water after heat dissipation and cooling is measured by the cooling tower backwater temperature transmitter 11; the water after cooling is returned to the production water tank 3 and then overflows to the cooling water tank 1; the production water circulating pump 6 sends water meeting the process standard to the production equipment (without passing through the plate heat exchanger 9) through the plate heat exchanger bypass electric valve 19, and then directly returns to the cooling water tank 1. In this mode, the cold water circulating pump 5 and the refrigerator 7 do not need to run, and the cooling tower can meet the temperature requirement of the production equipment on the circulating water after heat dissipation and cooling.
[0014] Summer mode: close the cooling tower water inlet electric valve 16, open the cooling water into the refrigerator electric valve 17, open the production water through plate heat exchanger water inlet valve 18, close the plate heat exchanger bypass valve 19 and the cooling water tank electric valve 12. The cooling water circulating pump 4 sends water to the refrigerator 7 through the cooling water into the refrigerator electric valve 17, and then the water enters the cooling tower 10 after the heat of the refrigerator is taken away; the temperature of the water after heat dissipation and cooling is measured by the cooling tower backwater temperature transmitter 11, and the water after cooling is returned to the cooling water tank 1. The production water circulating pump 6 sends water to the plate heat exchanger 9 through the production water through plate heat exchanger water inlet valve 18, and according to the set value of the PLC, controls the cold water amount of the production water through plate heat exchanger cold water electric valve 14; after heat exchange and cooling, the temperature of the water is measured by the production water through plate heat exchanger outlet temperature transmitter 15, and then the water is sent to the production equipment and directly returns to the production water tank 3. The cold water circulating pump 5 sends water to the refrigerator 7, and then part of the water is sent to the central air conditioner 8 and part of the water is sent to the plate heat exchanger 9, and then the water directly returns to the cold water tank 2. In this mode, the cooling circulating water and the cooling tower only exchange heat with the refrigerator to cool the refrigerator, and the production circulating water needs to be cooled by the cold water after the refrigeration of the refrigerator through the plate heat exchanger to meet the temperature requirement of the production water.
[0015] The utility model proposes a kind of refrigeration system automatic control energy-saving device, mainly for winter, summer two kinds of mode link process, with the outside environment temperature constantly changes, carry out lean control to refrigeration equipment facilities, reduce energy consumption cost, as follows specifically:
[0016] Half winter half summer mode:
[0017] The largest consumer of cold energy in summer refrigeration system is central air conditioner, followed by heat exchange and cooling of production circulating water. When the outside temperature is lower than the production environment temperature, the central air conditioner does not need to run, and when the outside temperature is higher than the production environment temperature, the central air conditioner needs to run.
[0018] On the basis of winter mode, the water temperature in the system is monitored by the cooling tower return water temperature transmitter 11 and the production water pass plate heat exchanger outlet temperature transmitter 15. The water temperature is automatically controlled by opening and closing the electric valve through PLC control. When the cooling tower return water temperature transmitter 11 monitors that the water temperature is less than or equal to 23℃, the production water pool electric valve 13 is opened and the cooling water pool electric valve 12 is closed, and the cooling tower return water is neutralized and cooled in the production water pool 3. Conversely, the valve is automatically switched. When the production water pass plate heat exchanger outlet temperature transmitter 15 monitors that the water temperature is less than or equal to 25℃, the production water pass plate heat exchanger inlet electric valve 18 is closed and the plate heat exchanger bypass electric valve 19 is opened, and the production water does not need to pass through the cold water heat exchanger to save cold energy. Conversely, the valve is automatically switched.
[0019] The key of this mode is to monitor the temperature of cooling circulating water and production water. When the cooling circulating water temperature is low after passing through the cooling tower, the production water can be neutralized to reduce the production water temperature. At the same time, the plate heat exchanger cold water valve opening is controlled according to the production water temperature to ensure that the production water temperature meets the standard. When the circulating cooling water temperature is high, the production water cannot be neutralized, the cooling circulating water can only be used for heat exchange and cooling of the refrigeration machine, and the production water needs to be used for production after the plate heat exchanger cold water heat exchange meets the standard.
Claims
1. A refrigeration system energy-saving device, comprising a cooling water pool, a cold water pool, a production water pool and a control component, characterized in that: The cooling water pool is connected to the water inlet of the cooling circulation water pump. The outlet of the cooling circulation water pump is connected to the cooling tower and the refrigerator through the cooling tower water inlet electric valve and the cooling water inlet refrigerator electric valve respectively. The cooling water outlet of the refrigerator is connected to the cooling tower. The outlet of the cooling tower is connected to the cooling water pool and the production water pool through the return cooling water pool electric valve and the return production water pool electric valve respectively. The outlet of the cooling tower is equipped with a cooling tower return water temperature transmitter. The production water pool and the cooling water pool are connected through an overflow pipe. The cold water pool is connected to the cold water circulation The circulating water pump is connected to the refrigerator, and the production water pool is connected to the water inlet of the plate heat exchanger through the production circulating water pump and the production water through the plate heat exchanger water inlet electric valve. A plate heat exchanger bypass electric valve is installed between the water outlet of the production circulating water pump and the water outlet of the plate heat exchanger. The plate heat exchanger outlet is also equipped with a production water through the plate heat exchanger outlet temperature transmitter. The water outlet of the refrigerator is connected to the central air-conditioning, and at the same time is connected to the plate heat exchanger through the plate heat exchanger cold water electric valve, and the water outlet of the plate heat exchanger is connected back to the cold water pool.
2. The refrigeration system energy-saving device according to claim 1, characterized in that The control component includes a PLC controller, a status indicator light, and a display panel. The PLC controller is respectively connected to the status indicator light, the display panel, the cooling tower return water temperature transmitter, the production water plate heat exchanger outlet temperature transmitter, and the cooling water return pool electric valve, the production water return pool electric valve, the plate heat exchanger cold water electric valve, the production water plate heat exchanger inlet electric valve, the plate heat exchanger bypass electric valve, the cooling tower inlet electric valve, and the cooling water inlet refrigerator electric valve.