Cooling system sharing cold point

Abstract

The utility model relates to the technical field of injection water systems, in particular to a common cold point cooling system. The common cold point cooling system comprises a distribution module and a pipeline system; the distribution module comprises a storage tank unit and a first heat exchanger; the pipeline system comprises at least one second heat exchanger and at least one water consumption point; the storage tank unit, the first heat exchanger, the second heat exchanger and the water consumption point are connected in series; the first heat exchanger is used for heating the system, and the second heat exchanger is used for cooling the system. The injection water system is cooled by adopting the cooling effect of the second heat exchanger at the water consumption point in the pipeline system, and a distribution module is not required to be connected into a chilled water interface, so that the input cost and the maintenance cost of the system are reduced.

Description

Technical Field

[0001] This utility model relates to the field of water for injection systems, and more specifically, to a shared cold point cooling system. Background Technology

[0002] Pharmaceutical manufacturing companies commonly use water for injection systems. Because the system needs to be disinfected regularly, the conventional design involves installing a heat exchanger on the distribution module near the storage tank. The shell side of the heat exchanger is equipped with industrial steam for heating and chilled water for cooling. Throughout the process, the system needs to be heated to 121°C through the heat exchanger and maintained at that temperature for more than 30 minutes. Then, chilled water is introduced through the heating heat exchanger to cool the system down to about 60°C before discharge.

[0003] This setup requires specialized chilled water facilities, resulting in relatively high initial and maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a shared cold point cooling system that can reduce investment and maintenance costs.

[0005] This utility model provides a shared cold point cooling system, including a distribution module and a piping system;

[0006] The distribution module includes a storage tank unit and a first heat exchanger;

[0007] The piping system includes at least one second heat exchanger and at least one water point;

[0008] The storage tank unit, the first heat exchanger, the second heat exchanger, and the water point are connected in series;

[0009] The first heat exchanger is used to heat the system, and the second heat exchanger is used to cool the system.

[0010] In an optional implementation, a temperature detection unit is also included, which is disposed in the distribution module or the piping system and is used to control the heating and cooling process of the system.

[0011] In an optional embodiment, the temperature detection unit includes a first temperature transmitter and a second temperature transmitter.

[0012] The first temperature transmitter is located at the outlet of the storage tank unit, and the second temperature transmitter is located at the inlet of the first heat exchanger.

[0013] In an optional embodiment, the temperature detection unit further includes a third temperature transmitter and a fourth temperature transmitter;

[0014] The third temperature transmitter is installed at the outlet of the first heat exchanger, and the fourth temperature transmitter is installed at the outlet of the second heat exchanger.

[0015] In an optional implementation, a first drain valve is provided downstream of the water point.

[0016] In an optional embodiment, a second drain valve is connected to the storage tank unit.

[0017] In an optional implementation, each of the water usage points is equipped with a pneumatic diaphragm valve.

[0018] In an optional implementation, the water usage points include high-temperature points and low-temperature points;

[0019] The second heat exchanger is located downstream of the high-temperature point and upstream of the low-temperature point, and can cool the high-temperature point to supply water to the low-temperature point.

[0020] In an optional implementation, the low-temperature points are in multiple groups;

[0021] Multiple sets of the aforementioned low-temperature points are connected in parallel.

[0022] In an optional embodiment, a conductivity sensor is provided between the first heat exchanger and the storage tank unit.

[0023] The beneficial effects of this utility model embodiment are:

[0024] The cooling effect of the second heat exchanger at the water point in the pipeline system is used to cool the injection water system. This eliminates the need for a separate module to connect to the chilled water interface, thus reducing the system's investment and maintenance costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of the shared cold point cooling system provided in this embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the distribution module of the shared cold point cooling system provided in this embodiment of the utility model;

[0028] Figure 3A schematic diagram of the piping system of the shared cold point cooling system provided in this embodiment of the utility model.

[0029] Icons: 1-Distribution module; 2-Pipeline system; 3-Storage tank unit; 4-First heat exchanger; 5-Industrial steam interface; 6-Steam condensate interface; 7-Manual diaphragm valve; 8-Conductivity sensor; 9-Flow meter; 10-Second heat exchanger; 11-Water usage point; 12-High temperature point; 13-Low temperature point; 14-Pneumatic diaphragm valve; 15-Chiller water supply interface; 16-Chiller water return interface. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following is combined Figures 1-3 The following describes some embodiments of the present invention in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] This utility model provides a shared cold point cooling system, such as Figure 1 As shown, it includes a distribution module 1 and a piping system 2; as Figure 2 As shown, the distribution module 1 includes a storage tank unit 3 and a first heat exchanger 4; as Figure 3 As shown, the pipeline system 2 includes at least one second heat exchanger 10 and at least one water point 11; the storage tank unit 3, the first heat exchanger 4, the second heat exchanger 10 and the water point 11 are connected in series; the first heat exchanger 4 is used for system heating and the second heat exchanger 10 is used for system cooling.

[0038] In this embodiment, the distribution module 1 and the piping system 2 are connected in series via pipes to form a complete cooling circulation system. The first heat exchanger 4 in the distribution module 1 is used for heating, and the second heat exchanger 10 in the piping system 2 is used for cooling.

[0039] Specifically, in this embodiment, the shell side of the first heat exchanger 4 is connected to an industrial steam interface 5 and a steam condensate interface 6, respectively. When needed, the injection water is heated by industrial steam before entering the storage tank unit 3. After the heating is completed, the condensate formed by the industrial steam is discharged through the steam condensate interface 6.

[0040] In this embodiment, a flow meter 9 is provided between the first heat exchanger 4 and the storage tank unit 3.

[0041] In this embodiment, the shell side of the second heat exchanger 10 is connected to the chilled water supply interface 15 and the chilled water return interface 16 respectively. When needed, chilled water is supplied to the shell side of the second heat exchanger 10 to cool the injection water in the pipeline system 2. The chilled water after heat exchange is discharged through the chilled water return interface 16.

[0042] In an optional implementation, a temperature detection unit is also included, which is disposed in the distribution module 1 or the pipeline system 2, for controlling the heating and cooling process of the system.

[0043] In this embodiment, the temperature detection unit can monitor and adjust operating parameters in real time to ensure stable system operation and precise control. Through the precise control of the temperature detection unit, the system can effectively avoid temperature fluctuations, improve production efficiency and product quality, and achieve significant economic and social benefits.

[0044] In an optional embodiment, the temperature detection unit includes a first temperature transmitter and a second temperature transmitter; the first temperature transmitter is located at the water outlet of the storage tank unit 3, and the second temperature transmitter is located at the water inlet of the first heat exchanger 4.

[0045] In this embodiment, the first temperature transmitter is installed at the outlet of the storage tank unit 3 to detect the temperature of the water for injection flowing out of the storage tank unit 3. It can monitor the temperature status of the water for injection before it enters the pipeline system 2 in real time, and provide initial reference data for the cooling control of the system.

[0046] In this embodiment, the second temperature transmitter is installed at the water inlet of the first heat exchanger 4 to monitor the temperature of the injection water entering the first heat exchanger 4. It can provide real-time feedback on the temperature change of the injection water before entering the heat exchanger, ensuring that the heating process of the heat exchanger meets expectations.

[0047] In an optional embodiment, the temperature detection unit further includes a third temperature transmitter and a fourth temperature transmitter; the third temperature transmitter is located at the outlet end of the first heat exchanger 4, and the fourth temperature transmitter is located at the outlet end of the second heat exchanger 10.

[0048] In this embodiment, the third temperature transmitter is installed at the outlet of the first heat exchanger 4 to detect the temperature of the water for injection after being heated by the first heat exchanger 4. It can monitor in real time whether the heated water for injection has reached the set high temperature value (such as 121°C) and provide accurate feedback for the temperature control of the system.

[0049] In this embodiment, the fourth temperature transmitter is installed at the outlet of the second heat exchanger 10 to detect the temperature of the water for injection after being cooled by the second heat exchanger 10. It can monitor in real time whether the water for injection after cooling has reached the set low temperature value (such as 60°C) and provide accurate feedback for the cooling control of the system.

[0050] In an optional implementation, a first drain valve is provided downstream of the water point.

[0051] In this embodiment, a first drain valve is provided downstream of each water point.

[0052] The first drain valve is used to drain the injection water in the pipeline after the system has finished operating, facilitating system cleaning and maintenance. The drain valve ensures the system's flexibility and ease of operation.

[0053] Specifically, in this embodiment, the first drain valve is a pneumatic diaphragm valve 14.

[0054] In an optional embodiment, a second drain valve is connected to the storage tank unit 3.

[0055] In this embodiment, a second drain valve is connected to the storage tank unit 3. The manual diaphragm valve 7 is operated manually by the operator and is used for cleaning and emptying the storage tank unit 3.

[0056] This setup offers greater flexibility, especially when detailed cleaning or maintenance is required.

[0057] In an optional embodiment, each of the water usage points 11 is provided with a pneumatic diaphragm valve 14.

[0058] In this embodiment, a pneumatic diaphragm valve 14 is installed at each water point 11, and the water usage at the water point 11 is controlled by the pneumatic diaphragm valve 14.

[0059] In an optional embodiment, the water point 11 includes a high-temperature point 12 and a low-temperature point 13; the second heat exchanger 10 is located downstream of the high-temperature point 12 and upstream of the low-temperature point 13, and can cool the high-temperature point 12 to supply water to the low-temperature point 13.

[0060] In this embodiment, water usage point 11 is divided into high-temperature point 12 and low-temperature point 13 according to temperature requirements. High-temperature point 12 directly uses high-temperature injection water discharged from storage tank unit 3, while low-temperature point 13 requires injection water that has been cooled by the second heat exchanger 10.

[0061] Specifically, in this embodiment, the second heat exchanger 10 is located downstream of the high-temperature point 12 and upstream of the low-temperature point 13. Its main function is to cool the injection water after it has been used at the high-temperature point 12, ensuring that the low-temperature point 13 can obtain injection water that meets the temperature requirements. With this arrangement, the system can efficiently meet the water usage requirements of different temperature points 11, while optimizing energy utilization.

[0062] More specifically, in this embodiment, the temperature of high temperature point 12 is 40°C, and the temperature of low temperature point 13 is 25°C.

[0063] In an optional implementation, the low-temperature points 13 are in multiple groups; the multiple groups of low-temperature points 13 are connected in parallel.

[0064] In this embodiment, multiple low-temperature points 13 are grouped together, and the low-temperature points 13 within the same group are connected in series and connected in series with the second heat exchanger 10.

[0065] In an optional embodiment, a conductivity sensor 8 is provided between the first heat exchanger 4 and the storage tank unit 3.

[0066] In this embodiment, the conductivity sensor 8 monitors the conductivity of the injection water after it has been heated by the first heat exchanger 4 in real time to ensure that the water quality meets the requirements. If the conductivity exceeds the set range, the system will issue an alarm and take corresponding measures.

[0067] Specifically, in this embodiment, the first heat exchanger 4 is used for system heating, such as heating to 121°C using industrial steam during the disinfection stage. During this process, high temperatures may cause the release of trace ions, such as metal ions, from the inner walls of pipes or equipment materials, or the decomposition of residual organic matter in the water to produce conductive substances. By installing a conductivity sensor 8 downstream of the first heat exchanger 4, the changes in the conductivity of the water after heating are detected in real time, ensuring that no additional impurities are introduced during the heating process and maintaining water purity. Simultaneously, if the detected conductivity exceeds a threshold, the system can automatically close the tank inlet valve and trigger a discharge or reprocessing process.

[0068] As can be seen from the above, the shared cold point cooling system provided by this utility model is divided into two main units: distribution module 1 and piping system 2. Distribution module 1 consists of a first heat exchanger 4 and a storage tank unit 3. Piping system 2 is the piping system 2 that supplies water to the water point 11 in the workshop, including a second heat exchanger 10, pipe fittings, and other parts.

[0069] During the normal production and water supply process of the system, water point 11 is divided into two types: high temperature point 12 and low temperature point 13. Low temperature point 13 needs to be cooled to the target temperature by the second heat exchanger 10 before use. The temperature is 40℃ for routine cleaning and about 25℃ for some liquid preparation points.

[0070] When the system is being disinfected, the industrial steam interface 5 of the first heat exchanger 4 is opened, allowing steam to enter the shell side of the first heat exchanger 4, and the system begins to heat up.

[0071] The insulation timer will start when the second temperature transmitter detects a temperature of 121°C.

[0072] After the system insulation is completed, the cooling process will begin, and the water in the system will be cooled to 60-70℃ before being discharged.

[0073] When cooling down, turn on the chilled water to the second heat exchanger 10, and open the valve fully to begin cooling the water inside the pipes.

[0074] When the first temperature transmitter detects that the system temperature reaches 60-70℃, the system has reached the discharge target temperature. Then, close the chilled water supply port 15 of the second heat exchanger 10 to stop cooling, and open the manual diaphragm valve 7 under the tank to discharge.

[0075] The beneficial effects of this utility model embodiment are:

[0076] The cooling effect of the second heat exchanger 10 at the water point 11 in the pipeline system 2 is used to cool the injection water system. This eliminates the need for the distribution module 1 to connect to the chilled water interface, thus reducing the system's investment and maintenance costs.

[0077] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shared cold point cooling system, characterized in that, This includes the distribution module and piping system; The distribution module includes a storage tank unit and a first heat exchanger; The piping system includes at least one second heat exchanger and at least one water point; The storage tank unit, the first heat exchanger, the second heat exchanger, and the water point are connected in series; The first heat exchanger is used to heat the system, and the second heat exchanger is used to cool the system.

2. The shared cold point cooling system according to claim 1, characterized in that, It also includes a temperature detection unit, which is installed in the distribution module or the pipeline system to control the system's heating and cooling processes.

3. The shared cold point cooling system according to claim 2, characterized in that, The temperature detection unit includes a first temperature transmitter and a second temperature transmitter. The first temperature transmitter is located at the outlet of the storage tank unit, and the second temperature transmitter is located at the inlet of the first heat exchanger.

4. The shared cold point cooling system according to claim 3, characterized in that, The temperature detection unit also includes a third temperature transmitter and a fourth temperature transmitter; The third temperature transmitter is installed at the outlet of the first heat exchanger, and the fourth temperature transmitter is installed at the outlet of the second heat exchanger.

5. The shared cold point cooling system according to claim 1, characterized in that, A first drain valve is installed downstream of the water point.

6. The shared cold point cooling system according to claim 1, characterized in that, The storage tank unit is connected to a second drain valve.

7. The shared cold point cooling system according to claim 1, characterized in that, Each of the aforementioned water usage points is equipped with a pneumatic diaphragm valve.

8. The shared cold point cooling system according to claim 1, characterized in that, The water usage points include high-temperature points and low-temperature points; The second heat exchanger is located downstream of the high-temperature point and upstream of the low-temperature point, and can cool the high-temperature point to supply water to the low-temperature point.

9. The shared cold point cooling system according to claim 8, characterized in that, The low-temperature points are in multiple groups; Multiple sets of the aforementioned low-temperature points are connected in parallel.

10. The shared cold point cooling system according to claim 1, characterized in that, A conductivity sensor is installed between the first heat exchanger and the storage tank unit.

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