Refrigerating system and process equipment

Abstract

The utility model relates to a refrigerating system and process equipment. The refrigerating system comprises a heat exchanger, a connecting pipe set, a conveying mechanism, a freezing mechanism and a pressure relief assembly. The connecting pipe set comprises a first liquid inlet pipe and a first liquid return pipe, and the first liquid inlet pipe and the first liquid return pipe are both connected with the heat exchanger. The conveying mechanism is connected with the ends, away from the heat exchanger, of the first liquid inlet pipe and the first liquid return pipe, and the refrigerating unit is arranged on the first liquid inlet pipe and used for cooling a cooling medium conveyed to the heat exchanger. The pressure relief assembly is arranged on the first liquid inlet pipe and connected with the conveying mechanism, and when the pressure in the first liquid inlet pipe is larger than a preset pressure value, the pressure relief assembly can convey the cooling medium in the first liquid inlet pipe to the conveying mechanism. By the adoption of the refrigerating system, when the pressure in the first liquid inlet pipe is larger than the preset pressure value, the pressure relief assembly conveys the cooling medium in the first liquid inlet pipe to the conveying mechanism, the risk caused by too high pressure in the first liquid inlet pipe is avoided, and the use reliability of the refrigerating system is improved.

Description

Technical Field

[0001] The present application belongs to the field of heat exchange technology, and in particular, relates to a refrigeration system and process equipment. Background Art

[0002] For most process solutions, their temperature needs to be controlled during application. For example, for process solutions that need to be kept at low temperatures, cooling equipment is required to cool the process solutions to prevent the temperature of the process solutions from exceeding the application temperature range.

[0003] Existing cooling equipment usually uses refrigerant to exchange heat with process solution. However, the temperature of the refrigerant will also rise during use, affecting the cooling effect. Therefore, additional equipment is usually set up to cool the refrigerant. The cooled refrigerant is then stored in a storage tank. The refrigerant in the storage tank is then extracted and transported to the pipeline to exchange heat with the process solution. However, the temperature of the refrigerant rises after heat exchange, which will cause the pressure in the pipeline to increase, resulting in the risk of high pressure in the pipeline. Utility Model Content

[0004] The technical problem to be solved by the present application is that there is a risk of high pressure in the pipelines of existing cooling equipment, and a refrigeration system and process equipment are provided that can avoid excessive pressure in the pipelines.

[0005] The technical solution proposed in this application is:

[0006] A refrigeration system, comprising:

[0007] Heat exchanger;

[0008] A connecting pipe group, including a first liquid inlet pipe and a first liquid return pipe, wherein the first liquid inlet pipe and the first liquid return pipe are both connected to the heat exchanger;

[0009] a conveying mechanism connected to the first liquid inlet pipe and the first liquid return pipe at one end away from the heat exchanger, and the conveying mechanism is capable of driving the cooling medium to circulate among the conveying mechanism, the first liquid inlet pipe, the heat exchanger and the first liquid return pipe;

[0010] a refrigeration unit, arranged on the first liquid inlet pipe, for cooling the cooling medium delivered to the heat exchanger;

[0011] A pressure relief component is arranged on the first liquid inlet pipe, and the pressure relief component is connected to the conveying mechanism. When the pressure in the first liquid inlet pipe is greater than a preset pressure value, the pressure relief component can convey the cooling medium in the first liquid inlet pipe to the conveying mechanism.

[0012] Furthermore, the pressure relief assembly includes a pressure relief regulating valve and a pressure detector, one end of the pressure relief regulating valve is connected to the first liquid inlet pipe, and the other end is connected to the conveying mechanism, and the pressure detector is arranged on the first liquid inlet pipe.

[0013] Furthermore, the refrigeration system includes multiple heat exchangers, and the connecting pipe group also includes multiple input branch pipes and multiple output branch pipes, each of the input branch pipes is connected to the first liquid inlet pipe and a corresponding one of the heat exchangers, and each of the output branch pipes is connected to the first liquid return pipe and a corresponding one of the heat exchangers.

[0014] Furthermore, the connecting pipe group also includes a plurality of cooling regulating valves, each of which is arranged on a corresponding input branch pipe to adjust the flow rate of the cooling medium input to the heat exchanger.

[0015] Furthermore, the connecting pipe set also includes a plurality of second temperature detectors, and each of the second temperature detectors is disposed at a corresponding output branch pipe.

[0016] Furthermore, the conveying mechanism includes a first storage tank, a first delivery pump and a manifold, the first storage tank is used to store the cooling medium, the first delivery pump is connected to the first storage tank and the first liquid inlet pipe, the manifold is connected to the first storage tank and the first liquid return pipe, the first delivery pump can pump the cooling medium in the first storage tank to the first liquid inlet pipe, and the pressure relief assembly is connected to the manifold.

[0017] Furthermore, the conveying mechanism also includes a first temperature detector, and the first temperature detector is arranged in the first storage tank.

[0018] Furthermore, the conveying mechanism also includes a pH value detector, and the pH value detector is arranged in the first storage tank. The first storage tank is also provided with a liquid filling port.

[0019] Furthermore, the refrigeration system also includes a heat dissipation mechanism, which is connected to the refrigeration unit and is used to dissipate heat from the refrigeration unit.

[0020] A process equipment comprises the above refrigeration system.

[0021] Furthermore, the process equipment also includes a second storage tank, a cooling circuit and a second delivery pump, the second storage tank stores a process solution, the cooling circuit is connected to the second storage tank and the heat exchanger, and the second delivery pump is arranged in the cooling circuit to drive the process solution to circulate between the second storage tank, the cooling circuit and the heat exchanger.

[0022] With the above-mentioned refrigeration system and process equipment, the delivery mechanism drives the cooling medium to be delivered to the heat exchanger to cool the process solution. After the heat exchange, the temperature of the cooling medium rises, causing the pressure in the first liquid inlet pipe to increase. When the pressure in the first liquid inlet pipe is greater than the preset pressure value, the pressure relief component delivers the cooling medium in the first liquid inlet pipe to the delivery mechanism, avoiding the risk of excessive pressure in the first liquid inlet pipe and improving the reliability of the use of the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification. They are used to explain the present application together with the embodiments of the present application and do not constitute a limitation of the present application.

[0024] Figure 1 A schematic diagram of the principle of a process device provided in one embodiment of the present application;

[0025] Figure 2 for Figure 1 The schematic diagram of the refrigeration system part of the process equipment shown;

[0026] Figure 3 for Figure 1 Schematic diagram of the principles of the process system and part of the refrigeration system in the process equipment shown.

[0027] Description of labels:

[0028] 10. Process equipment;

[0029] 100, refrigeration system; 110, conveying mechanism; 111, first storage tank; 112, first conveying pump; 113, manifold; 114, pH value detector; 115, first temperature detector; 120, connecting pipe group; 121, first liquid inlet pipe; 122, first liquid return pipe; 123, input branch pipe; 124, output branch pipe; 125, cooling regulating valve; 126, second temperature detector; 131, heat exchanger; 132, refrigeration unit; 133, heat dissipation mechanism; 140, pressure relief assembly; 141, pressure relief regulating valve; 142, pressure detector;

[0030] 200, process system; 201, second storage tank; 202, second delivery pump; 203, second liquid inlet pipe; 204, second liquid return pipe; 205, third temperature detector; 206, fourth temperature detector; 207, process pipeline; 208, process delivery pump. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] like Figure 1 As shown, an embodiment of the present application provides a process equipment 10 , which includes a refrigeration system 100 and a process system 200 . The refrigeration system 100 can cool the process solution in the process system 200 .

[0034] Please also see Figure 2 and Figure 3 In one embodiment, the refrigeration system 100 includes a conveying mechanism 110, a connecting pipe group 120 and a heat exchanger 131. The connecting pipe group 120 is connected to the conveying mechanism 110 and the heat exchanger 131. The conveying mechanism 110 can drive the cooling medium to circulate between the heat exchanger 131, the connecting pipe group 120 and the conveying mechanism 110, and the heat exchanger 131 can realize heat exchange between the cooling medium and the process solution, thereby cooling the process solution.

[0035] It can be determined that the conveying mechanism 110 and the heat exchanger 131 are connected through the connecting pipe group 120, and the cooling medium circulates between the conveying mechanism 110, the connecting pipe group 120 and the heat exchanger 131, so the cooling medium is conveyed from the conveying mechanism 110 to the heat exchanger 131 through the connecting pipe group 120, and is also conveyed from the heat exchanger 131 to the conveying mechanism 110 through the connecting pipe group 120.

[0036] Furthermore, the refrigeration system 100 also includes a refrigeration unit 132, which is arranged in the connecting pipe group 120 and is located between the heat exchanger 131 and the conveying mechanism 110. The refrigeration unit 132 is used to freeze the cooling medium flowing from the connecting pipe group 120 to the heat exchanger 131, thereby reducing the temperature of the cooling medium and further improving the cooling effect of the cooling medium on the process solution.

[0037] Furthermore, the refrigeration system 100 further includes a pressure relief assembly 140, which is disposed in the connecting tube assembly 120 and connected to the conveying mechanism 110. When the pressure in the connecting tube assembly 120 is greater than a preset pressure value, the pressure relief assembly 140 can also convey the cooling medium in the connecting tube assembly 120 to the conveying mechanism 110.

[0038] With the above-mentioned refrigeration system 100, the delivery mechanism 110 drives the cooling medium to be delivered to the heat exchanger 131 to cool the process solution. After the heat exchange, the temperature of the cooling medium rises, resulting in an increase in the pressure in the connecting pipe group 120. When the pressure in the connecting pipe group 120 is greater than the preset pressure value, the pressure relief component 140 delivers the cooling medium in the connecting pipe group 120 to the delivery mechanism 110, avoiding the risk of excessive pressure in the connecting pipe group 120, thereby improving the practical reliability of the refrigeration system 100.

[0039] In one embodiment, the delivery mechanism 110 includes a first storage tank 111, a first delivery pump 112, and a manifold 113. The first storage tank 111 is used to store cooling medium. The first delivery pump 112 and the manifold 113 are both connected to the first storage tank 111 and the connecting pipe group 120. The first delivery pump 112 can pump the cooling medium in the first storage tank 111 to the connecting pipe group 120, so that the cooling medium circulates among the first storage tank 111, the connecting pipe group 120, the heat exchanger 131, and the manifold 113. Specifically, the cooling medium is output from the first storage tank 111 to the connecting pipe group 120, and then enters the heat exchanger 131 to exchange heat with the process solution. Next, the cooling medium in the heat exchanger 131 flows back to the manifold 113 through the connecting pipe group 120, and then returns to the liquid storage tank through the manifold 113.

[0040] Furthermore, the pressure relief assembly 140 is connected to the manifold 113 , so that when the pressure in the connecting pipe group 120 is greater than a preset pressure value, the cooling medium is directly transported back to the first storage tank 111 through the manifold 113 .

[0041] Specific to Figure 1 In the illustrated embodiment, the cooling medium is an ethylene glycol solution (a mixture of 40% ethylene glycol and 60% soft water). In order to ensure sealing and avoid the risk of contamination caused by medium leakage, a pressure relief valve is provided on the first storage tank 111. When the pressure on the connecting pipe group 120 is too high, the pressure relief assembly 140 transports the cooling medium back to the first storage tank 111. When the pressure in the first storage tank 111 is too high, the pressure of the first storage tank 111 is relieved through the pressure relief valve.

[0042] Of course, in other embodiments, when the properties of the cooling medium are relatively stable, the first storage tank 111 can be arranged to be connected to the outside, thereby eliminating the need to provide a pressure relief valve on the first storage tank 111 for pressure relief.

[0043] In one embodiment, the conveying mechanism 110 further includes a pH value detector 114, which is disposed in the first storage tank 111 and is used to detect the pH value of the cooling medium. Furthermore, a liquid filling port is provided on the first storage tank 111 to replenish the cooling medium into the first storage tank 111 through the liquid filling port. In addition, the content of ethylene glycol in the first storage tank 111 can also be adjusted according to the pH value to ensure that its content meets the requirements.

[0044] It should be explained that, in order to ensure the sealing performance, a sealing cover or a one-way valve can be provided at the liquid filling port. When adding liquid, the prepared cooling medium can be directly added to the first storage tank 111 through the liquid filling port; when adjusting the pH value of the cooling medium in the first storage tank 111, ethylene glycol or soft water can be added to the first storage tank 111 through the liquid filling port, and during the adding process, the first delivery pump 112 can be started to make the cooling medium circulate and the ethylene glycol and soft water mix more evenly.

[0045] Furthermore, the conveying mechanism 110 also includes a first liquid level detector, which is arranged in the first storage tank 111 and is used to detect the liquid level of the cooling medium in the first storage tank 111, so that when the liquid level in the first storage tank 111 is lower than a preset low liquid level value, the cooling medium is added to the first storage tank 111 through the liquid filling port until the liquid level in the first storage tank 111 reaches a preset high liquid level value.

[0046] In one embodiment, the conveying mechanism 110 also includes a first temperature detector 115, which is disposed in the first storage tank 111 and is used to detect the temperature inside the first storage tank 111. The refrigeration unit 132 can cool the cooling medium in the connecting pipe group 120 according to the temperature value, thereby ensuring the cooling effect.

[0047] In one embodiment, the connecting pipe group 120 includes a first liquid inlet pipe 121 and a first liquid return pipe 122. The first liquid inlet pipe 121 and the first liquid return pipe 122 are both connected to the conveying mechanism 110 and the heat exchanger 131. The conveying mechanism 110 drives the cooling medium to be conveyed to the heat exchanger 131 through the first liquid inlet pipe 121, and the cooling medium flows back from the heat exchanger 131 to the conveying mechanism 110 through the first liquid return pipe 122.

[0048] Specifically, the first liquid inlet pipe 121 is connected to the first delivery pump 112 , and the first delivery pump 112 pumps the cooling medium in the first storage tank 111 to the first liquid inlet pipe 121 ; the first liquid return pipe 122 is connected to the confluence pipe 113 to deliver the cooling medium back to the first storage tank 111 .

[0049] Furthermore, the refrigeration unit 132 and the pressure relief component 140 are both disposed in the first liquid inlet pipe 121. In other words, the refrigeration unit 132 is used to cool the cooling medium transported to the heat exchanger 131 in the first liquid inlet pipe 121, and the cooled cooling medium can be directly transported to the heat exchanger 131 for heat exchange, thereby improving the cooling effect of the cooling medium on the process solution. The pressure relief component 140 can relieve the pressure of the cooling medium in the first liquid inlet pipe 121.

[0050] The delivery mechanism 110 drives the cooling medium to be delivered to the heat exchanger 131 to cool the process solution. After the heat exchange, the temperature of the cooling medium rises, resulting in an increase in the pressure in the first liquid inlet pipe 121. When the pressure in the first liquid inlet pipe 121 is greater than the preset pressure value, the pressure relief component 140 delivers the cooling medium in the first liquid inlet pipe 121 to the delivery mechanism 110, avoiding the risk of excessive pressure in the first liquid inlet pipe 121, thereby improving the reliability of the use of the refrigeration system 100.

[0051] It is understandable that the first liquid return pipe 122 is directly connected to the manifold 113, so when the cooling medium is heated up in the heat exchanger 131 and the pressure increases, the cooling medium in the first liquid return pipe 122 can directly flow back to the first storage tank 111, and the first liquid return pipe 122 generally does not have risks due to excessive pressure. For the first liquid inlet pipe 121, its liquid inlet pipe inputs cooling medium through the first delivery pump 112, and the other end is connected to the heat exchanger 131. When the cooling medium in the heat exchanger 131 rises and the pressure increases, there will be pressure sources at both ends of the first liquid inlet pipe 121, which makes the pressure in the first liquid inlet pipe 121 too high and there is a risk, so a pressure relief component 140 is set on the first liquid inlet pipe 121, that is, between the refrigeration unit 132 and the heat exchanger 131, to discharge the cooling medium in the first liquid inlet pipe 121 to the first storage tank 111. Of course, in other embodiments, the pressure relief assembly 140 may also be disposed between the first delivery pump 112 and the refrigeration unit 132, which is not limited here.

[0052] In one embodiment, the refrigeration system 100 includes a plurality of heat exchangers 131 , and the first liquid inlet pipe 121 and the first liquid return pipe 122 are connected to the plurality of heat exchangers 131 , so that the process solutions in the plurality of process systems 200 are cooled by the plurality of heat exchangers 131 .

[0053] Furthermore, the connecting pipe group 120 also includes a plurality of input branch pipes 123 and a plurality of output branch pipes 124 , each input branch pipe 123 is connected to the first liquid inlet pipe 121 and a corresponding heat exchanger 131 , and each output branch pipe 124 is connected to the first liquid return pipe 122 and a corresponding heat exchanger 131 .

[0054] Preferably, the connecting pipe group 120 further includes a plurality of cooling regulating valves 125, each of which is disposed on a corresponding input branch pipe 123 to adjust the flow rate of the cooling medium input to the heat exchanger 131, thereby adjusting the cooling effect. It should be explained that the process solution has a suitable process temperature. In order to avoid the process solution temperature being too low or too high, the flow rate of the cooling medium can be adjusted by the cooling regulating valve 125, thereby adjusting the cooling effect on the process solution.

[0055] In one embodiment, the connecting pipe group 120 further includes a plurality of second temperature detectors 126, each of which is disposed on a corresponding output branch pipe 124, and is used to detect the temperature of the cooling medium after heat exchange. It should be noted that the second temperature detector 126 detects the temperature of the cooling medium, and the first temperature detector 115 detects the temperature in the first storage tank 111, so the detection result of the second temperature detector 126 is more accurate, and the refrigeration unit 132 can cool the cooling medium according to the detection result of the second temperature detector 126.

[0056] At the same time, the opening of the cooling regulating valve 125 can be controlled according to the detection result of the second temperature detector 126. Specifically, assuming that the temperature of the cooling medium after freezing of the refrigeration unit 132 is -5°C, and the temperature range required for the process solution is 2~5°C, if the detection result of the second temperature detector 126 is 10°C, it indicates how high the temperature of the process solution is, and it is necessary to increase the opening of the cooling regulating valve 125, or fully open the cooling regulating valve 125; if the detection result of the second temperature detector 126 is 5°C, it indicates that the temperature of the process solution is close to the required temperature, and the opening of the cooling regulating valve 125 can be closed by half; if the detection result of the second temperature detector 126 is lower than 5°C and not lower than 2°C by much, it indicates that the temperature of the process solution is at the required temperature, and the cooling regulating valve 125 can be closed.

[0057] In addition, the detection result of the first temperature detector 115 and the detection result of the second temperature detector 126 can be compared to determine whether the temperature detector is abnormal, thereby preventing the temperature from being out of control due to the abnormality of the temperature detector.

[0058] In one embodiment, the refrigeration system 100 further includes a heat dissipation mechanism 133, which is connected to the refrigeration unit 132 and is used to dissipate heat from the refrigeration unit 132. It should be explained that the refrigeration unit 132 and the heat dissipation mechanism 133 are conventional equipment, and the heat dissipation mechanism 133 is a cooling tower, so it is not described here.

[0059] In one embodiment, the pressure relief assembly 140 includes a pressure relief regulating valve 141 and a pressure detector 142. One end of the pressure relief regulating valve 141 is connected to the first liquid inlet pipe 121, and the other end is connected to the conveying mechanism 110, specifically connected to the manifold 113. The pressure detector 142 is used to detect the pressure in the first liquid inlet pipe 121. In this way, when the pressure detector 142 detects that the pressure in the first liquid inlet pipe 121 is greater than a preset pressure value, the pressure relief regulating valve 141 opens, so that the cooling medium in the first liquid inlet pipe 121 flows into the first storage tank 111, thereby achieving pressure relief on the first liquid inlet pipe 121.

[0060] In one embodiment, the process system 200 includes a second storage tank 201, a cooling loop and a second delivery pump 202. The second storage tank 201 stores a process solution. The cooling loop is connected to the second storage tank 201 and the heat exchanger 131. The second delivery pump 202 is arranged in the cooling loop to drive the process solution to circulate between the second storage tank 201, the cooling loop and the heat exchanger 131.

[0061] Furthermore, the cooling circuit includes a second liquid inlet pipe 203 and a second liquid return pipe 204 . The second liquid inlet pipe 203 and the second liquid return pipe 204 are both connected to the second storage tank 201 and the heat exchanger 131 . The second delivery pump 202 is disposed on the second liquid inlet pipe 203 .

[0062] Furthermore, the process system 200 also includes a third temperature detector 205, which is disposed in the second liquid return pipe 204 and is used to detect the temperature of the process solution after heat exchange. The second delivery pump 202 operates according to the temperature of the process solution.

[0063] It should be explained that the temperature of the process solution after heat exchange in the second liquid return pipe 204 will be lower than the temperature of the process solution in the second storage tank 201, so the opening of the cooling regulating valve 125 is adjusted according to the detection result of the second temperature detector 126. In addition, when it is judged that the temperature of the process solution meets the requirements, the closing of the second delivery pump 202 will lag behind the closing of the cooling regulating valve 125, that is, after the cooling regulating valve 125 is closed, the second delivery pump 202 will continue to run for a period of time to make the temperature of the process solution in the second storage tank 201 uniform.

[0064] More preferably, the process system 200 further includes a fourth temperature detector 206, which is disposed in the second storage tank 201 and is used to detect the temperature in the second storage tank 201. By comparing the detection result of the fourth temperature detector 206 with the detection result of the third temperature detector 205, it is possible to prevent the temperature detector from being abnormal and causing the temperature to fall out of control.

[0065] In one embodiment, the process system 200 also includes a process pipeline 207 and a process delivery pump. One end of the process pipeline 207 is connected to the second storage tank 201, and the other end extends into the process space. The process delivery pump is arranged in the process pipeline 207 to drive the process solution in the second storage tank 201 to be delivered to the process space to realize the application of the process solution.

[0066] Furthermore, the process system 200 further includes a second liquid level detector, which is disposed in the second storage tank 201 and is used to detect the liquid level of the process solution in the second storage tank 201. A liquid filling port is also provided on the second storage tank 201. Similarly, the process solution in the second storage tank 201 can be replenished according to the detection result of the second liquid level detector, and the replenishment is performed through the liquid filling port.

[0067] It can be understood that when there are multiple heat exchangers 131, there are also multiple process systems 200 to improve production efficiency.

[0068] In one embodiment, the process equipment further includes a control system, which is electrically connected to the electrical components in the refrigeration system 100 and the process system 200 to enable the process equipment to operate automatically, thereby further improving production efficiency, production safety factor and product quality.

[0069] In order to facilitate understanding of the technical solution of this application, Figure 1 and Figure 2 The working process of the process equipment in the above embodiment is described:

[0070] For the refrigeration system 100: firstly, the ethylene glycol solution is prepared according to the detection result of the pH value detector 114, and then the ethylene glycol solution in the first storage tank 111 is pumped to the first liquid inlet pipe 121 by the first delivery pump 112, and the refrigeration unit 132 cools the ethylene glycol solution in the first liquid inlet pipe 121, so that the temperature of the ethylene glycol solution is reduced to -5°C. The cooled ethylene glycol solution is transported to the heat exchanger 131 to exchange heat with the process solution, and the ethylene glycol solution after heat exchange returns to the first storage tank 111 through the output branch pipe 124, the first liquid return pipe 122 and the confluence pipe 113.

[0071] During operation, if the pressure detector 142 detects that the pressure in the first liquid inlet pipe 121 is greater than the preset pressure value, the pressure relief regulating valve 141 opens to discharge the ethylene glycol solution in the first liquid inlet pipe 121 directly into the first storage tank 111. At the same time, when the temperature of the process solution is judged to meet the temperature requirement through the detection result of the second temperature detector 126, the cooling regulating valve 125 and the first delivery pump 112 stop working. In consideration of economic efficiency, the refrigeration unit 132 and the heat dissipation mechanism 133 can be shut down or kept working, which is not limited here.

[0072] For the process system 200: the second delivery pump 202 pumps the process solution in the second storage tank 201 to the heat exchanger 131, and the cooling medium exchanges heat with the process solution in the heat exchanger 131, so that the temperature of the process solution is maintained in a preset temperature range (for example, 2°C~5°C in this embodiment). After the third temperature detector 205 detects that the temperature of the process solution meets the requirements, the second delivery pump 202 continues to operate for a period of time and then shuts down. Subsequently, the process delivery pump can pump the process solution to the process space.

[0073] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A refrigeration system, characterized in that: include: Heat exchanger; A connecting pipe group, including a first liquid inlet pipe and a first liquid return pipe, wherein the first liquid inlet pipe and the first liquid return pipe are both connected to the heat exchanger; a conveying mechanism connected to the first liquid inlet pipe and the first liquid return pipe at one end away from the heat exchanger, and the conveying mechanism is capable of driving the cooling medium to circulate among the conveying mechanism, the first liquid inlet pipe, the heat exchanger and the first liquid return pipe; a refrigeration unit, arranged on the first liquid inlet pipe, for cooling the cooling medium delivered to the heat exchanger; A pressure relief component is arranged on the first liquid inlet pipe, and the pressure relief component is connected to the conveying mechanism. When the pressure in the first liquid inlet pipe is greater than a preset pressure value, the pressure relief component can convey the cooling medium in the first liquid inlet pipe to the conveying mechanism.

2. The refrigeration system according to claim 1, characterized in that: The pressure relief assembly includes a pressure relief regulating valve and a pressure detector. One end of the pressure relief regulating valve is connected to the first liquid inlet pipe, and the other end is connected to the conveying mechanism. The pressure detector is arranged on the first liquid inlet pipe.

3. The refrigeration system according to claim 1, characterized in that: The refrigeration system includes multiple heat exchangers, and the connecting pipe group also includes multiple input branch pipes and multiple output branch pipes, each of the input branch pipes is connected to the first liquid inlet pipe and a corresponding one of the heat exchangers, and each of the output branch pipes is connected to the first liquid return pipe and a corresponding one of the heat exchangers.

4. The refrigeration system according to claim 3, characterized in that: The connecting pipe group further includes a plurality of cooling regulating valves, each of which is disposed on a corresponding input branch pipe to regulate the flow of the cooling medium input to the heat exchanger.

5. The refrigeration system according to claim 4, characterized in that: The connecting pipe set further includes a plurality of second temperature detectors, each of which is disposed on a corresponding output branch pipe.

6. The refrigeration system according to claim 1, characterized in that: The conveying mechanism includes a first storage tank, a first delivery pump and a manifold. The first storage tank is used to store the cooling medium. The first delivery pump is connected to the first storage tank and the first liquid inlet pipe. The manifold is connected to the first storage tank and the first liquid return pipe. The first delivery pump can pump the cooling medium in the first storage tank to the first liquid inlet pipe. The pressure relief assembly is connected to the manifold.

7. The refrigeration system according to claim 6, characterized in that: The conveying mechanism further comprises a pH value detector, and the pH value detector is arranged in the first storage tank, and the first storage tank is also provided with a liquid filling port.

8. The refrigeration system according to any one of claims 1 to 7, characterized in that: The refrigeration system further comprises a heat dissipation mechanism, which is connected to the refrigeration unit and is used for dissipating heat from the refrigeration unit.

9. A process equipment, characterized in that: A refrigeration system comprising any one of claims 1 to 8.

10. The process equipment according to claim 9, characterized in that: The process equipment also includes a second storage tank, a cooling circuit and a second delivery pump. The second storage tank stores a process solution. The cooling circuit is connected to the second storage tank and the heat exchanger. The second delivery pump is arranged in the cooling circuit to drive the process solution to circulate between the second storage tank, the cooling circuit and the heat exchanger.

Images