Combined cooling system suitable for different seasons
By using a combination of open and closed cooling towers in pharmaceutical and chemical production, the problems of impurity precipitation and scaling in the cooling system during winter have been solved, achieving efficient cooling and reducing cleaning costs.
Patent Information
- Application Number
- CN202520136813.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-21
AI Technical Summary
In existing technologies, when using open cooling towers for cooling in winter, the contact between circulating water and outdoor air causes impurities to settle and scale to form, reducing the cooling efficiency of the equipment and increasing cleaning costs.
A combination of open and closed cooling towers is used, with open cooling towers used in summer and closed cooling towers used in winter. The cooling system can be switched between seasons by switching valves to ensure that no external pollutants enter the closed-loop circulating water.
It improves the heat exchange efficiency of cooling equipment, avoids impurity precipitation and scaling, and saves equipment cleaning costs.
Smart Images
Figure CN223826589U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a combined cooling system suitable for different seasons, belonging to the field of pharmaceutical and chemical production technology. Background Technology
[0002] The main processes in producing Chinese herbal granules include: pretreatment of medicinal materials → extraction → concentration → alcohol precipitation → ethanol recovery → sedimentation → paste collection.
[0003] The alcohol precipitation and static precipitation process involves cooling the 85℃~90℃ medicinal liquid to ≤20℃ and letting it stand for 12~48 hours to separate the impurities in the medicinal liquid.
[0004] The existing process cooling method is divided into chiller + open cooling tower cooling. The operation method is as follows: in summer, the chiller is used to provide the cold source, and in winter, the open cooling tower circulating water is used to provide the cold source. When using the open cooling tower as the cold source in winter, the circulating water comes into contact with the outdoor air, which contains dust and impurities. As the usage time increases, the impurities in the circulating water gradually increase. The impurities settle or scale in the equipment jacket, which requires regular cleaning of the jacket impurities and scale. The sedimentation and scale of impurities reduce the cooling efficiency of the equipment and increase the cleaning cost of the equipment jacket.
[0005] To solve one of the above problems, there is an urgent need for a combined cooling system suitable for different seasons. Utility Model Content
[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to achieve a closed-loop water circulation system in winter, where no external pollutants enter and the heat exchange efficiency of the process cooling equipment is guaranteed. To this end, a combined cooling system suitable for different seasons is provided.
[0007] The present invention describes a combined cooling system suitable for different seasons, comprising a tee connector A and a tee connector B. The system is characterized in that: the first interface of tee connector A is connected to the main inlet pipe; the first interface of tee connector B is connected to the main outlet pipe; the second interfaces of tee connector A and tee connector B are respectively connected to the winter cooling system via a first branch pipe and a second branch pipe, respectively; valves B and A are respectively installed on the first and second branch pipes; the third interfaces of tee connector A and tee connector B are respectively connected to the summer cooling system via a third branch pipe and a fourth branch pipe, respectively; valves C and D are respectively installed on the third and fourth branch pipes; and a main pipeline circulation pump is installed on the main outlet pipe.
[0008] The process cooling system uses a combination of open and closed cooling towers to meet the design requirements of process cooling in different seasons.
[0009] In summer, valves C and D are opened, while valves A and B are closed, using the summer cooling system, which combines an open cooling tower with a chiller for cooling. In winter, valves A and B are opened, while valves C and D are closed, using the winter cooling system, which uses a closed cooling tower for cooling. After the modification, the winter cooling system uses a closed-loop water circulation system. This closed-loop circulation prevents external pollutants from entering, ensuring the heat exchange efficiency of the process cooling equipment. The number of valves used for switching between summer and winter modes has been reduced to four, simplifying the operation.
[0010] Preferably, the winter cooling system includes a plate heat exchanger and a closed-loop cooling tower. The second port of the tee connector A is connected to the heat medium inlet of the plate heat exchanger via a first branch pipe, and the second port of the tee connector B is connected to the heat medium outlet of the plate heat exchanger via a second branch pipe. The refrigerant outlet of the plate heat exchanger is connected to the inlet of the closed-loop cooling tower via a first circulation pipe, and the refrigerant inlet of the plate heat exchanger is connected to the outlet of the closed-loop cooling tower via a second circulation pipe, forming a closed-loop circulating cooling water pipeline. A first circulation pump is installed on the first circulation pipe. In winter, closed-loop clean circulating softened water is used for cooling, preventing impurity sedimentation and scaling in the equipment jacket, thus improving the equipment cooling efficiency.
[0011] Preferably, valves E and F for controlling the opening and closing of the pipeline are respectively installed on the first circulation pipe and the second circulation pipe.
[0012] Preferably, the summer cooling system connection includes a chiller and an open cooling tower. The chiller includes a condenser and an evaporator. The third port of the tee connector A is connected to the inlet of the evaporator via a third branch pipe. The third port of the tee connector B is connected to the outlet of the evaporator via a fourth branch pipe. The outlet of the condenser is connected to the inlet of the open cooling tower via a third circulation pipe. The inlet of the condenser is connected to the outlet of the open cooling tower via a fourth circulation pipe, forming a closed-loop circulating cooling water pipeline. A second circulation pump is installed on the fourth circulation pipe. To prevent dust and impurities in the air from entering the cooling tower's circulating water, a closed-loop cooling tower is used in winter, and an open cooling tower is used for the chiller in summer.
[0013] Preferably, valve G and valve H are installed on the third circulation pipe and the fourth circulation pipe, respectively.
[0014] Preferably, both the main inlet pipe and the main outlet pipe are connected to the cooling water inlet and outlet of the process cooling equipment to form a closed-loop circulating cooling water pipeline.
[0015] Preferably, the cooling equipment used in the process is an alcohol precipitation tank, and the main outlet pipe and the main inlet pipe are filled with softened water.
[0016] Preferably, the refrigerant used in the plate heat exchanger is antifreeze or oil.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] The combined cooling system of this utility model, applicable to different seasons, operates as follows: In summer, valves C and D are opened, while valves A and B are closed, using a summer cooling system that combines an open cooling tower with a chiller for cooling; in winter, valves A and B are opened, while valves C and D are closed, using a winter cooling system that uses a closed cooling tower for cooling. After the modification, the winter cooling system uses a closed-loop water circulation system. This closed-loop circulation prevents external pollutants from entering, ensuring the heat exchange efficiency of the process cooling equipment.
[0019] The combined cooling system of this utility model, applicable to different seasons, improves cooling efficiency: In winter, closed-loop clean circulating water (softened water) is used for cooling, and there is no impurity sedimentation or scaling in the equipment jacket, thus improving the equipment cooling efficiency.
[0020] The combined cooling system of this utility model, applicable to different seasons, saves equipment jacket cleaning costs: there is no sedimentation or scaling in the equipment jacket, and the equipment does not need to be cleaned and descaled regularly, saving equipment unpacking and cleaning costs. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the winter cooling system of this utility model;
[0024] In the diagram: 1. T-joint A; 2. T-joint B; 3. Main inlet pipe; 4. Main outlet pipe; 5. Plate heat exchanger; 6. Closed-loop cooling tower; 7. First circulation pump; 8. Main pipeline circulation pump; 9. Second circulation pump; 10. Valve A; 11. Valve B; 12. Valve C; 13. Valve D; 14. Condenser; 15. Open-loop cooling tower; 16. Evaporator. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0026] Example 1, as Figure 1-2 As shown, the combined cooling system suitable for different seasons includes a tee connector A1 and a tee connector B2. The first port of the tee connector A1 is connected to the main water inlet pipe 3, and the first port of the tee connector B2 is connected to the main water outlet pipe 4. The second ports of the tee connector A1 and the tee connector B2 are respectively connected to the winter cooling system through the first branch pipe and the second branch pipe. The first branch pipe and the second branch pipe are respectively equipped with valves B11 and A10. The third ports of the tee connector A1 and the tee connector B2 are respectively connected to the summer cooling system through the third branch pipe and the fourth branch pipe. The third branch pipe and the fourth branch pipe are respectively equipped with valves C12 and D13. The main water outlet pipe 4 is equipped with a main pipeline circulation pump 8.
[0027] The process cooling system uses a combination of open and closed cooling towers to meet the design requirements of process cooling in different seasons.
[0028] In summer, valves C12 and D13 are opened, while valves A10 and B11 are closed, using the summer cooling system, which combines the chiller and open cooling tower 15 for cooling. In winter, valves A10 and B11 are opened, while valves C12 and D13 are closed, using the winter cooling system, which uses a closed cooling tower for cooling. After the modification, the winter cooling system uses a closed-loop water circulation system. The closed-loop circulation prevents external pollutants from entering, ensuring the heat exchange efficiency of the process cooling equipment. The number of valves used for switching between summer and winter modes has been reduced to four, simplifying the operation.
[0029] Example 2, as Figure 1-2As shown, the combined cooling system suitable for different seasons includes a tee connector A1 and a tee connector B2. The first port of the tee connector A1 is connected to the main water inlet pipe 3, and the first port of the tee connector B2 is connected to the main water outlet pipe 4. The second ports of the tee connector A1 and the tee connector B2 are respectively connected to the winter cooling system through the first branch pipe and the second branch pipe. The first branch pipe and the second branch pipe are respectively equipped with valves B11 and A10. The third ports of the tee connector A1 and the tee connector B2 are respectively connected to the summer cooling system through the third branch pipe and the fourth branch pipe. The third branch pipe and the fourth branch pipe are respectively equipped with valves C12 and D13. The main water outlet pipe 4 is equipped with a main pipeline circulation pump 8.
[0030] Furthermore, the winter cooling system includes a plate heat exchanger 5 and a closed-loop cooling tower 6. The second port of the tee connector A1 is connected to the heat medium inlet of the plate heat exchanger 5 via a first branch pipe, and the second port of the tee connector B2 is connected to the heat medium outlet of the plate heat exchanger 5 via a second branch pipe. The refrigerant outlet of the plate heat exchanger 5 is connected to the inlet of the closed-loop cooling tower 6 via a first circulation pipe, and the refrigerant inlet of the plate heat exchanger 5 is connected to the outlet of the closed-loop cooling tower 6 via a second circulation pipe, forming a closed-loop circulating cooling water pipeline. A first circulation pump 7 is installed on the first circulation pipe. In winter, closed-loop clean circulating softened water is used for cooling, preventing impurity sedimentation and scaling in the equipment jacket, thus improving the equipment cooling efficiency.
[0031] Furthermore, valves E and F for controlling the opening and closing of the pipeline are respectively installed on the first circulation pipe and the second circulation pipe.
[0032] Furthermore, the summer cooling system connection includes a chiller and an open cooling tower 15. The chiller includes a condenser 14 and an evaporator 16. The third port of the tee connector A1 is connected to the inlet of the evaporator 16 via a third branch pipe, and the third port of the tee connector B2 is connected to the outlet of the evaporator 16 via a fourth branch pipe. The outlet of the condenser 14 is connected to the inlet of the open cooling tower 15 via a third circulation pipe, and the inlet of the condenser 14 is connected to the outlet of the open cooling tower 15 via a fourth circulation pipe, forming a closed-loop circulating cooling water pipeline. A second circulation pump 9 is installed on the fourth circulation pipe. To prevent dust and impurities in the air from entering the cooling tower's circulating water, a closed-loop cooling tower is used in winter, and an open cooling tower is used for the chiller in summer.
[0033] Furthermore, valve G and valve H are respectively installed on the third circulation pipe and the fourth circulation pipe.
[0034] Furthermore, both the main inlet pipe 3 and the main outlet pipe 4 are connected to the cooling water inlet and outlet of the process cooling equipment to form a closed-loop circulating cooling water pipeline.
[0035] Furthermore, the cooling equipment used in the process is an alcohol precipitation tank.
[0036] Furthermore, the refrigerant used in the plate heat exchanger 5 is antifreeze or oil.
[0037] The combined cooling system of this utility model, applicable to different seasons, operates as follows: In summer, valves C and D are opened, while valves A and B are closed, using a summer cooling system that combines an open cooling tower with a chiller for cooling; in winter, valves A and B are opened, while valves C and D are closed, using a winter cooling system that uses a closed cooling tower for cooling. After the modification, the winter cooling system uses a closed-loop water circulation system. This closed-loop circulation prevents external pollutants from entering, ensuring the heat exchange efficiency of the process cooling equipment.
[0038] The combined cooling system of this utility model, applicable to different seasons, improves cooling efficiency: In winter, closed-loop clean circulating water (softened water) is used for cooling, and there is no impurity sedimentation or scaling in the equipment jacket, thus improving the equipment cooling efficiency.
[0039] The combined cooling system of this utility model, applicable to different seasons, saves equipment jacket cleaning costs: there is no sedimentation or scaling in the equipment jacket, and the equipment does not need to be cleaned and descaled regularly, saving equipment unpacking and cleaning costs.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
[0041] Any aspects of this invention not described in detail are well-known to those skilled in the art.
Claims
1. A combined cooling system suitable for different seasons, comprising a tee connector A (1) and a tee connector B (2), characterized in that: The first interface of the three-way connector A (1) is connected to the main water inlet pipe (3), the first interface of the three-way connector B (2) is connected to the main water outlet pipe (4), the second interface of the three-way connector A (1) and the second interface of the three-way connector B (2) are respectively connected to the winter cooling system through the first branch pipe and the second branch pipe, respectively. The first branch pipe and the second branch pipe are respectively equipped with valve B (11) and valve A (10), the third interface of the three-way connector A (1) and the third interface of the three-way connector B (2) are respectively connected to the summer cooling system through the third branch pipe and the fourth branch pipe, respectively. The third branch pipe and the fourth branch pipe are respectively equipped with valve C (12) and valve D (13), and the main water outlet pipe (4) is equipped with a main pipeline circulation pump (8).
2. The combined cooling system suitable for different seasons according to claim 1, characterized in that, The winter cooling system includes a plate heat exchanger (5) and a closed cooling tower (6). The second port of the three-way connector A (1) is connected to the heat medium inlet of the plate heat exchanger (5) through the first branch pipe. The second port of the three-way connector B (2) is connected to the heat medium outlet of the plate heat exchanger (5) through the second branch pipe. The refrigerant outlet of the plate heat exchanger (5) is connected to the inlet of the closed cooling tower (6) through the first circulation pipe. The refrigerant inlet of the plate heat exchanger (5) is connected to the outlet of the closed cooling tower (6) through the second circulation pipe, forming a closed-loop circulating cooling water pipeline. A first circulation pump (7) is installed on the first circulation pipe.
3. The combined cooling system suitable for different seasons according to claim 2, characterized in that, The first circulation pipe and the second circulation pipe are respectively equipped with valve E and valve F for controlling the opening and closing of the pipeline.
4. The combined cooling system suitable for different seasons according to claim 3, characterized in that, The summer cooling system connection includes a chiller and an open cooling tower (15). The chiller includes a condenser (14) and an evaporator (16). The third interface of the three-way connector A (1) is connected to the inlet of the evaporator (16) through a third branch pipe. The third interface of the three-way connector B (2) is connected to the outlet of the evaporator (16) through a fourth branch pipe. The outlet of the condenser (14) is connected to the inlet of the open cooling tower (15) through a third circulation pipe. The inlet of the condenser (14) is connected to the outlet of the open cooling tower (15) through a fourth circulation pipe, forming a closed-loop circulating cooling water pipeline. A second circulation pump (9) is installed on the fourth circulation pipe.
5. The combined cooling system suitable for different seasons according to claim 4, characterized in that, Valve G and valve H are respectively installed on the third circulation pipe and the fourth circulation pipe.
6. The combined cooling system suitable for different seasons according to claim 5, characterized in that, The main inlet pipe (3) and the main outlet pipe (4) are both connected to the cooling water inlet and outlet of the process cooling equipment to form a closed-loop circulating cooling water pipeline.
7. The combined cooling system suitable for different seasons according to claim 6, characterized in that, The cooling equipment used in the process is an alcohol precipitation tank.