Temperature control system capable of working uninterruptedly

Abstract

The utility model provides a temperature control system capable of uninterruptedly working, which comprises an internal circulation pipeline, a heat exchanger and an external cooling pipeline, the internal circulation pipeline is connected with the heat exchanger, and the external cooling pipeline is connected with the heat exchanger; the heat exchanger comprises a first heat exchanger, a second heat exchanger, a first heat exchanger switch and a second heat exchanger switch, the first heat exchanger is connected with the second heat exchanger in parallel, the first heat exchanger switch is connected with the first heat exchanger, and the second heat exchanger switch is connected with the second heat exchanger. By the adoption of the structural design of the double heat exchangers, loops can be switched, elements can be replaced on line, uninterrupted work of equipment is achieved, and production efficiency and system reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control systems, in particular to a temperature control system that works uninterruptedly. Background Art

[0002] The temperature control system in the field of polymer material processing is an indispensable part of the polymer material processing process, and it plays a vital role in ensuring product quality and performance.

[0003] Polymer material processing imposes extremely stringent temperature requirements. Temperature control accuracy directly impacts the material's melt state, fluidity, and the physical and chemical properties of the final product. Therefore, temperature control systems must possess high-precision temperature regulation capabilities to meet the processing needs of diverse polymer materials.

[0004] Temperature control system circuit switching is a key method for achieving precise temperature control. Existing temperature control systems generally include circuit switching functionality. Within a temperature control system, switching between different temperature control circuits is accomplished by changing the fluid flow path or adjusting system parameters according to the established temperature control strategy.

[0005] However, when faced with failures in important components, the machine often needs to be shut down for maintenance, resulting in production interruptions and affecting production efficiency. In particular, some products are interrupted during production due to failures in important components in the temperature control system, and the important components cannot be kept working uninterruptedly through circuit switching, resulting in the direct scrapping of products produced in the equipment. Utility Model Content

[0006] The utility model provides a temperature control system that works continuously, and its purpose is to solve the technical problem in the background technology that when an important component fails, the system needs to be shut down for maintenance, resulting in production interruption and affecting production efficiency.

[0007] In order to achieve the above-mentioned object, the present invention provides a temperature control system that works uninterruptedly, comprising an internal circulation pipeline, a heat exchanger and an external cooling pipeline, wherein the internal circulation pipeline is connected to the heat exchanger, and the external cooling pipeline is connected to the heat exchanger;

[0008] The heat exchanger includes a first heat exchanger, a second heat exchanger, a first heat exchanger switch and a second heat exchanger switch. The first heat exchanger and the second heat exchanger are connected in parallel. The first heat exchanger switch is connected to the first heat exchanger, and the second heat exchanger switch is connected to the second heat exchanger.

[0009] Preferably, the internal circulation pipeline includes a circulating medium inlet pipeline and a pressure sensor, a start switch, a first circulating power mechanism, a second circulating power mechanism, a first circulating power mechanism switch, a second circulating power mechanism switch, an equipment body pipeline, a circulating medium outlet pipeline, and a circulating one-way valve. The pressure sensor and the start switch are arranged in series on the circulating medium inlet pipeline, the first circulating power mechanism and the second circulating power mechanism are connected in parallel, the first circulating power mechanism switch is connected to the first circulating power mechanism, the second circulating power mechanism switch is connected to the second circulating power mechanism, and the circulating one-way valve is connected to the circulating medium inlet pipeline and the circulating medium outlet pipeline.

[0010] Preferably, the internal circulation pipeline further includes a first heater, a second heater, a first heater switch and a second heater switch, the first heater and the second heater are connected in parallel, the first heater switch is connected to the first heater, and the second heater switch is connected to the second heater.

[0011] Preferably, the internal circulation pipeline further includes a flow switch and a pressure switch, and the flow switch and the pressure switch are both arranged on the circulating medium inlet pipeline.

[0012] Preferably, the internal circulation pipeline further includes a temperature measuring resistor, and the temperature measuring resistor is arranged on the circulating medium outlet pipeline.

[0013] Preferably, the internal circulation pipeline further includes a service valve, and the service valve is provided on the circulating medium outlet pipeline.

[0014] Preferably, the external cooling pipeline includes an external water inlet pipeline, a first regulating valve, a second regulating valve, a first regulating valve switch, a second regulating valve switch, and an external return water pipeline arranged on the external water inlet pipeline, the first regulating valve and the second regulating valve are connected in parallel, the first regulating valve switch is connected to the first regulating valve, the second regulating valve switch is connected to the second regulating valve, the external water inlet pipeline is connected to one end of the heat exchanger, and the external return water pipeline is connected to the other end of the heat exchanger.

[0015] Preferably, the first regulating valve and the second regulating valve are both electric regulating valves.

[0016] Preferably, the external cooling pipeline further includes a pressure sensor and a cooling temperature measuring resistor, and the pressure sensor and the cooling temperature measuring resistor are arranged on the external water inlet pipeline.

[0017] Preferably, the external cooling pipeline further includes a flow detection switch, and the flow detection switch is provided on the external water return pipeline.

[0018] The uninterrupted temperature control system of the present invention has the following beneficial effects:

[0019] The structural design adopts dual heat exchangers and other components, which can switch circuits and replace components online to achieve uninterrupted operation of the equipment, improve production efficiency and system reliability, and has the advantages of short downtime, high production efficiency and high system reliability. It is suitable for the field of rubber and other polymer material processing machinery and shows broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a preferred embodiment of a non-stop temperature control system of the present invention;

[0021] In the picture:

[0022] Pressure sensor; 2. Start switch; 3. First circulation power mechanism switch; 4. First circulation power mechanism; 5. First circulation power mechanism switch; 6. First heater switch; 7. First heater; 8. First heater switch; 9. Temperature measuring resistor; 10. Exhaust valve; 11. First regulating valve switch; 12. First regulating valve; 13. First regulating valve switch; 14. Cooling temperature measuring resistor; 15. Pressure sensor;

[0023] Second circulation power mechanism switch; 22. Second circulation power mechanism; 23. Second circulation power mechanism switch; 24. Second heater switch; 25. Second heater; 26. Second heater switch; 27. Second heat exchanger switch; 28. Second heat exchanger switch; 29. ​​Second heat exchanger; 30. First heat exchanger switch; 31. First heat exchanger switch; 32. First heat exchanger; 33. Second regulating valve switch; 34. Second regulating valve; 35. Second regulating valve switch;

[0024] 40. Inspection valve; 41. Temperature measuring resistor; 42. Pressure switch; 43. Second heat exchanger switch; 44. Second heat exchanger switch; 45. Flow switch; 46. First heat exchanger switch, 47. First heat exchanger switch. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0026] The utility model aims at solving the existing problems and provides a temperature control system that works continuously.

[0027] In one embodiment, a temperature control system that works continuously, such as Figure 1As shown, it includes an internal circulation pipeline, a heat exchanger and an external cooling pipeline, the internal circulation pipeline is connected to the heat exchanger, and the external cooling pipeline is connected to the heat exchanger;

[0028] The heat exchanger includes a first heat exchanger 32, a second heat exchanger 29, a first heat exchanger switch 30, 31, 46, 47, and a second heat exchanger switch 27, 28, 43, 44. The first heat exchanger 32 and the second heat exchanger 29 are connected in parallel. The first heat exchanger switches 30, 31, 46, 47 are connected to the first heat exchanger 32, and the second heat exchanger switches 27, 28, 43, 44 are connected to the second heat exchanger 29. The first heat exchanger switches 30, 31, 46, 47 are located at both ends of the first heat exchanger 32, and the second heat exchanger switches 27, 28, 43, 44 are located at both ends of the second heat exchanger 29.

[0029] Wherein, the first heat exchanger switches 30 and 46 are provided on the internal circulation pipeline; the first heat exchanger switches 31 and 47 are provided on the external cooling pipeline;

[0030] The second heat exchanger switches 27 and 43 are provided on the internal circulation pipeline; the second heat exchanger switches 28 and 44 are provided on the external cooling pipeline;

[0031] The first heat exchanger 32 and the second heat exchanger 29 transfer heat from the internal medium to the external cooling water, achieving temperature control. The appropriate heat exchanger is selected based on the medium's characteristics, heat exchange efficiency requirements, and cooling needs, and precise control is implemented to ensure effective heat exchange. If a failure is detected in the first heat exchanger 32, the system automatically switches to the backup circuit of the second heat exchanger 29 to ensure continuous operation.

[0032] The internal circulation pipeline includes a circulating medium inlet pipeline and a pressure sensor 1, a start switch 2, a first circulating power mechanism 4, a second circulating power mechanism 22, first circulating power mechanism switches 3, 5, second circulating power mechanism switches 21, 23, a first heater 7, a second heater 25, first heater switches 6, 8 and second heater switches 24, 26, an equipment body pipeline, and a circulating medium outlet pipeline, a circulating one-way valve, a flow switch 45, a pressure switch 42, a temperature measuring resistor 41, and a service valve 40. The pressure sensor 1 and the start switch 2 are arranged in series on the circulating medium inlet pipeline, the first circulating power mechanism 4 and the second circulating power mechanism 22 are connected in parallel, the first circulating power mechanism switches 3, 5 are connected to the first circulating power mechanism 4, the second circulating power mechanism switches 21, 23 are connected to the second circulating power mechanism 22, and the circulating one-way valve connects the circulating medium inlet pipeline and the circulating medium outlet pipeline.

[0033] The first circulating power mechanism switches 3 , 5 are provided at both ends of the first circulating power mechanism 4 , and the second circulating power mechanism switches 21 , 23 are provided at both ends of the second circulating power mechanism 22 .

[0034] When a fault is detected in the first circulating power mechanism 4, the system automatically switches to the backup circuit of the second circulating power mechanism 22 through bypass switching to ensure continuous operation. The switching process is automatically controlled by the control module according to the fault diagnosis results.

[0035] In this embodiment, both the first circulation mechanism 4 and the second circulation mechanism 22 are circulation pumps. The circulation pumps accelerate the circulation of the internal medium, thereby improving heat exchange efficiency. An appropriate circulation pump is selected based on the medium characteristics, flow rate, and head requirements, and is precisely controlled to ensure stable circulation flow.

[0036] As a further improvement of this embodiment, a filtering device is provided before the circulating medium enters the circulating pipeline.

[0037] The first heater 7 and the second heater 25 are connected in parallel, the first heater switches 6 and 8 are connected to the first heater 7, and the second heater switches 24 and 26 are connected to the second heater 25. The first heater switches 6 and 8 are located at both ends of the first heater 7, and the second heater switches 24 and 26 are located at both ends of the second heater 25.

[0038] The flow switch 45 and the pressure switch 42 are both installed on the circulating medium inlet pipeline. The temperature measuring resistor 41 is installed on the circulating medium outlet pipeline. The inspection valve 40 is installed on the circulating medium outlet pipeline.

[0039] The external cooling pipeline includes an external water inlet pipeline, a first regulating valve 12, a second regulating valve 34, first regulating valve switches 11, 13, second regulating valve switches 33, 35, a second pressure sensor 15, a cooling temperature measuring resistor 14, an external water return pipeline, and a flow detection switch 48. The external cooling water removes heat from the internal medium to achieve temperature control.

[0040] The first regulating valve 12 and the second regulating valve 34 are both electrically operated. They control the flow of external cooling water to meet cooling requirements. Flow control is achieved by precisely controlling the opening of the electrically operated regulating valves according to temperature control requirements.

[0041] The first regulating valve 12 and the second regulating valve 34 are connected in parallel. The first regulating valve switches 11 and 13 are connected to the first regulating valve 12, and the second regulating valve switches 33 and 35 are connected to the second regulating valve 34. The external water inlet pipe is connected to one end of the heat exchanger, and the external water return pipe is connected to the other end of the heat exchanger. The first regulating valve switches 11 and 13 are installed at both ends of the first regulating valve 12, and the second regulating valve switches 33 and 35 are installed at both ends of the second regulating valve 34.

[0042] The second pressure sensor 15 and the cooling temperature measuring resistor 14 are arranged on the external water inlet pipe. The pressure sensor is used to monitor the cooling water pressure and make adjustments to ensure safe operation of the system.

[0043] As a further improvement to this embodiment, a pressurizing device may be provided on the external water return pipeline.

[0044] The flow detection switch 48 is provided on the external water return pipe.

[0045] The control module analyzes component operating data to predict failure trends and take preventative measures to prevent them. It uses artificial intelligence algorithms to optimize control strategies, thereby improving system control accuracy and efficiency. It includes a data acquisition module, a data processing module, a control instruction module, and a human-computer interface.

[0046] Data acquisition: Through industrial bus or other communication methods, the status parameters of each component are collected in real time, such as temperature, pressure, flow, working hours, etc.

[0047] Data processing: Process and analyze the collected data, such as calculating the average value, determining whether it exceeds the threshold, predicting failures, etc.

[0048] Control instructions: Generate control instructions based on data processing results, such as: opening / closing valves, starting / stopping pumps, adjusting temperature, etc.

[0049] Human-computer interaction: Through the human-computer interface, the system status, alarm information, operation instructions, etc. are displayed, and the operator's input instructions are received.

[0050] The structure of the control module is:

[0051] The control module uses a PLC (Programmable Logic Controller) or industrial control computer as the core processor. It is equipped with corresponding input and output modules for connecting sensors, actuators, and human-machine interfaces. It can use industrial bus or network communication protocols to achieve interoperability with other devices.

[0052] The control module is responsible for data processing and motion control for the entire system, sending and receiving data via the industrial bus to a higher-level control module or MES (a production information management system for the execution layer of a manufacturing enterprise's workshop). During system operation, the control module calculates the cumulative operating hours of key components such as valves, pumps, heaters, and heat exchangers. When the operating hours of key components approach the mean time between failures (MTBF), relevant personnel are notified via on-site alarms or push notifications.

[0053] The internal circulation part is used to accelerate and heat the circulation of the circulating medium inside the equipment. The circulating medium passes through the pressure sensor 1 to detect the pressure. After the medium pressure reaches the working pressure, the solenoid valve 2 is opened and the circulating medium enters the internal circulation pipeline. In the default state, the start switches 3 and 5 solenoid valves are opened, the circulating pump 4 of the first circulating power mechanism works, the solenoid valves 21 and 23 of the second circulating power mechanism are closed, and the circulating pump of the second circulating power mechanism 22 does not work. When the control module detects that the circulating pump of the first circulating power mechanism 4 is not working properly, the circulating pump of the first circulating power mechanism 4 is stopped, the switches 21 and 23 of the second circulating power mechanism are opened, the start switches 3 and 5 are closed, and the second circulating power mechanism 22 is started.

[0054] After the circulating medium is pressurized, it passes through the solenoid valve of the first heater switch 6 and enters the first heater 7. The first heater 7 is equipped with a liquid level detector, a thermistor, and an automatic exhaust valve to ensure that when the first heater 7 is working, any abnormal situation can be fed back and intervened in time.

[0055] A temperature measuring resistor 9 is installed in the pipe where the circulating medium flows through the solenoid valve of the first heater switch 8. When the control module detects that the medium temperature is below the set temperature, the first heater 7 is activated. Under normal circumstances, the solenoid valves of the second heater switches 24 and 26 are closed, and the second heater 25 (with the same configuration as the first heater 7) does not operate. If the first heater 7 fails, the first heater 7 stops operating, the second heater switches 24 and 26 are opened, the first heater switches 6 and 8 are closed, and the second heater 25 operates according to the set requirements.

[0056] When the first heater 7 or the second heater 25 is in continuous operation, the exhaust valve 10 will automatically exhaust air periodically to prevent the automatic exhaust valve on the first heater 7 or the second heater 25 from exhausting air in time and causing overpressure danger.

[0057] The circulating medium passes through the first heat exchanger switch 30, enters the first heat exchanger 32, exchanges heat with the external cooling water, and then passes through the first heat exchanger switch 46; similarly, if the first heat exchanger 32 fails, the system will close the first heat exchanger switches 30 and 46, and the first heat exchanger switches 31 and 47 on the external cooling water pipeline, and simultaneously open the second heat exchanger switches 27 and 43 and the second heat exchanger switches 28 and 44 on the external cooling water pipeline, allowing the circulating medium to exchange heat with the external cooling water in the second heat exchanger 29.

[0058] The circulating medium passes through the flow switch 45 to detect the flow rate, the pressure switch 42 to detect the pressure, and then enters the equipment body through the external connecting pipe. After flowing out of the equipment body, it passes through the temperature measuring resistor 41 to detect the temperature and passes through the one-way valve 20 to form a circulation loop.

[0059] During equipment maintenance, service valve 40 allows the medium inside the device to be discharged. If a critical component fails, the control module triggers an audible and visual alarm, automatically switches to a bypass circuit, displays the faulty component on the human-machine interface, and recommends replacement. This information is then pushed to system administrators. This does not affect system operation, ensuring continuous function.

[0060] The external cooling system controls the flow of external cooling water to achieve cooling. The external cooling water passes through a second pressure sensor 15 to detect pressure, and a cooling temperature resistor 14 to detect temperature. If the temperature is 2.5 degrees Celsius or higher, the control module will indicate that the entire system is not functioning properly and that appropriate measures must be taken. Under normal operating conditions, the external cooling water flows through the first regulating valve switch 13. The opening of the first regulating valve 12 is adjusted to adjust the amount of external cooling water flowing in, according to process control requirements. If a problem occurs with the first regulating valve 12, the system will automatically close the first regulating valve switches 11 and 13, open the second regulating valve switches 33 and 35, and activate the second regulating valve 34.

[0061] External cooling water enters the second heat exchanger 29 through the second heat exchanger switch 28. After completing heat exchange in the second heat exchanger 29, it enters the return line through the second heat exchanger switch 44. Alternatively, it enters the first heat exchanger 32 through the first heat exchanger switch 31. After completing heat exchange in the first heat exchanger 32, it enters the return line through the first heat exchanger switch 47. The flow rate is detected by the flow detection switch 48. If 48 detects no flow, the control module will take appropriate action and issue an alarm. If a key component fails, the control module will issue an audible and visual alarm, automatically switch to a bypass mode, display the faulty component on the human-machine interface, provide replacement suggestions, and push this information to system administrators. This does not affect system operation, ensuring continuous functional output.

[0062] Key system components, such as valves, pumps, heaters, and heat exchangers, are designed to be replaceable online. Within the same system, flanges and bolts are standardized and uniform in type, with replacement tools provided for quick and easy replacement.

[0063] The uninterrupted temperature control system of the present invention has the following beneficial effects:

[0064] The structural design adopts dual heat exchangers and other components, which can switch circuits and replace or repair components online, thereby achieving uninterrupted operation of the equipment, improving production efficiency and system reliability. It has the advantages of short downtime, high production efficiency and high system reliability. It is suitable for the field of rubber and other polymer material processing machinery and shows broad application prospects.

[0065] When a component failure is detected, the system automatically switches to the backup circuit through bypass switching to ensure continuous operation. The switching process is automatically controlled by the control module according to the fault diagnosis results. With the structure of two heat exchangers, when one of the heat exchangers is malfunctioning, the heat exchanger circuit can be switched by the heat exchanger switches provided at both ends of the heat exchanger, and the other heat exchanger can be connected to work, and the malfunctioning heat exchanger can be repaired without stopping the machine. With the structure of two circulating power mechanisms, when one of the circulating power mechanisms is malfunctioning, the circulating power mechanism circuit can be switched by the circulating power mechanism switches provided at both ends of the circulating power mechanism, and the other circulating power mechanism can be connected to work, and the malfunctioning circulating power mechanism can be repaired without stopping the machine. The same applies to heaters and regulating valves.

[0066] The heater raises the internal medium temperature to the set value to meet production process requirements. The appropriate heater is selected based on the medium's characteristics and temperature requirements, and precise control is implemented to ensure stable heating temperatures. Safety devices such as a heater level detector, a dry-burn thermistor, and an automatic exhaust valve ensure safe system operation.

[0067] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A temperature control system that works continuously, characterized in that: It includes an internal circulation pipeline, a heat exchanger and an external cooling pipeline, wherein the internal circulation pipeline is connected to the heat exchanger, and the external cooling pipeline is connected to the heat exchanger; The heat exchanger includes a first heat exchanger (32), a second heat exchanger (29), a first heat exchanger switch (30, 31, 46, 47) and a second heat exchanger switch (27, 28, 43, 44), wherein the first heat exchanger (32) and the second heat exchanger (29) are connected in parallel, the first heat exchanger switch (30, 31, 46, 47) is connected to the first heat exchanger (32), and the second heat exchanger switch (27, 28, 43, 44) is connected to the second heat exchanger (29).

2. The uninterrupted temperature control system according to claim 1, characterized in that: The internal circulation pipeline includes a circulation medium inlet pipeline and a pressure sensor (1), a start switch (2), a first circulation power mechanism (4), a second circulation power mechanism (22), a first circulation power mechanism switch (3, 5), a second circulation power mechanism switch (21, 23), an equipment body pipeline, a circulation medium outlet pipeline, and a circulation check valve. The pressure sensor (1) and the start switch (2) are arranged in series on the circulation medium inlet pipeline, the first circulation power mechanism (4) and the second circulation power mechanism (22) are connected in parallel, the first circulation power mechanism switch (3, 5) is connected to the first circulation power mechanism (4), the second circulation power mechanism switch (21, 23) is connected to the second circulation power mechanism (22), and the circulation check valve connects the circulation medium inlet pipeline and the circulation medium outlet pipeline.

3. The uninterrupted temperature control system according to claim 2, characterized in that: The internal circulation pipeline further includes a first heater (7), a second heater (25), a first heater switch (6, 8) and a second heater switch (24, 26), wherein the first heater (7) and the second heater (25) are connected in parallel, the first heater switch (6, 8) is connected to the first heater (7), and the second heater switch (24, 26) is connected to the second heater (25).

4. The uninterrupted temperature control system according to claim 2, characterized in that: The internal circulation pipeline further comprises a flow switch (45) and a pressure switch (42), and the flow switch (45) and the pressure switch (42) are both arranged on the circulating medium inlet pipeline.

5. The uninterrupted temperature control system according to claim 2, characterized in that: The internal circulation pipeline further comprises a temperature measuring resistor (41), and the temperature measuring resistor (41) is arranged on the circulating medium outlet pipeline.

6. The uninterrupted temperature control system according to claim 2, characterized in that: The internal circulation pipeline further comprises a maintenance valve (40), and the maintenance valve (40) is provided on the circulating medium outlet pipeline.

7. The uninterrupted temperature control system according to claim 2, characterized in that: The external cooling pipeline includes an external water inlet pipeline, a first regulating valve (12), a second regulating valve (34), a first regulating valve switch (11, 13), a second regulating valve switch (33, 35) and an external water return pipeline, the first regulating valve (12) and the second regulating valve (34) being connected in parallel, the first regulating valve switch (11, 13) being connected to the first regulating valve (12), the second regulating valve switch (33, 35) being connected to the second regulating valve (34), the external water inlet pipeline being connected to one end of the heat exchanger, and the external water return pipeline being connected to the other end of the heat exchanger.

8. The uninterrupted temperature control system according to claim 7, characterized in that: The first regulating valve (12) and the second regulating valve (34) are both electric regulating valves.

9. The uninterrupted temperature control system according to claim 7, characterized in that: The external cooling pipeline further comprises a second pressure sensor (15) and a cooling temperature measuring resistor (14), and the second pressure sensor (15) and the cooling temperature measuring resistor (14) are arranged on the external water inlet pipeline.

10. The uninterrupted temperature control system according to claim 7, characterized in that: The external cooling pipeline further includes a flow detection switch (48), and the flow detection switch (48) is arranged on the external water return pipeline.

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