Temperature control system

Abstract

The utility model discloses a temperature control system. The temperature control system comprises a secondary refrigerant inlet, a first one-way valve, a constant pressure tank and a circulating pipeline, a reaction kettle, a second one-way valve, a mixing tank, a circulating pump and a heat exchanger are arranged on the circulating pipeline; an outlet of the reaction kettle is communicated with one end of the second one-way valve, the other end of the second one-way valve is communicated with a first inlet of the mixing tank, an outlet of the mixing tank is communicated with one end of the circulating pump, the other end of the circulating pump is communicated with a first inlet of the heat exchanger, and a first outlet of the heat exchanger is communicated with an inlet of the reaction kettle; the secondary refrigerant inlet is connected with the inlet of the constant-pressure tank through the first one-way valve; and the outlet of the constant-pressure tank is communicated with the circulating pipeline between the outlet of the reaction kettle and the second one-way valve. By adopting the scheme, the problem of how to enable the secondary refrigerant to meet the use requirement of a client side under the condition that the secondary refrigerant is not replaced is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of temperature control, and in particular to a temperature control system. Background Technology

[0002] In temperature control systems, refrigerants are typically used for temperature control. However, these systems usually have a limited applicable temperature range. When the refrigerant used by the client is fixed, its temperature may not meet the client's requirements under certain operating conditions. For example, if the temperature range is -20℃ to 130℃, and the client uses a 50% ethylene glycol solution as the refrigerant, this solution has a freezing point of -40℃ and a boiling point of 107℃. Therefore, this medium cannot meet the client's requirements under high-temperature conditions. Thus, how to make the refrigerant meet the client's requirements without changing it is a pressing technical problem that needs to be solved. Utility Model Content

[0003] This invention provides a temperature control system to solve the problem of how to ensure that the refrigerant meets the user requirements without changing the refrigerant.

[0004] According to one aspect of the present invention, a temperature control system is provided, which includes a refrigerant inlet, a first one-way valve, a constant pressure tank, and a circulation pipeline.

[0005] The circulation pipeline is equipped with a reaction vessel, a second one-way valve, a mixing tank, a circulation pump, and a heat exchanger;

[0006] The outlet of the reactor is connected to one end of the second one-way valve, the other end of the second one-way valve is connected to the first inlet of the mixing tank, the outlet of the mixing tank is connected to one end of the circulating pump, the other end of the circulating pump is connected to the first inlet of the heat exchanger, and the first outlet of the heat exchanger is connected to the inlet of the reactor.

[0007] The refrigerant inlet is connected to the constant pressure tank inlet via the first check valve, and the circulation pipeline between the constant pressure tank outlet and the reactor outlet and the second check valve is connected.

[0008] In an optional embodiment of this utility model, a back pressure valve and a refrigerant outlet are further included, wherein the back pressure valve is connected between the constant pressure tank and the refrigerant outlet; and / or, the temperature control system further includes a first temperature control valve, wherein the outlet of the reactor is connected to the refrigerant outlet through the first temperature control valve.

[0009] In an optional embodiment of this utility model, a first hand valve is further included, which is connected between the back pressure valve and the refrigerant outlet.

[0010] In optional embodiments of this utility model, at least one of the following is also included:

[0011] A first regulating valve is provided, through which the refrigerant inlet is connected to the second inlet of the mixing tank;

[0012] A second regulating valve is connected between the mixing tank and the circulating pump;

[0013] A third regulating valve is connected between the circulating pump and the heat exchanger.

[0014] In optional embodiments of this utility model, at least one of the following is also included:

[0015] A third check valve is located between the circulating pump and the heat exchanger.

[0016] A first pressure sensing element is connected between the second regulating valve and the circulating pump;

[0017] A second pressure sensing element is connected between the circulating pump and the third regulating valve;

[0018] A third pressure sensing element is connected between the heat exchanger and the reactor.

[0019] A fourth pressure sensing element is connected between the constant pressure tank and the reaction vessel;

[0020] A first temperature sensing element is connected between the heat exchanger and the reactor.

[0021] In an optional embodiment of this utility model, a second hand valve is further included, which is connected between the refrigerant inlet and the first one-way valve; and / or,

[0022] The temperature control system also includes a first filter, which is connected between the refrigerant inlet and the first one-way valve.

[0023] In an optional embodiment of this utility model, a steam inlet, a switch control valve, and a second temperature control valve are also included. The steam inlet is connected to the second inlet of the heat exchanger through the switch control valve and the second temperature control valve.

[0024] In optional embodiments of this utility model, at least one of the following is also included:

[0025] A third valve is connected between the steam inlet and the on / off control valve;

[0026] A second filter is connected between the steam inlet and the on / off control valve;

[0027] A fifth pressure sensor is connected between the steam inlet and the on / off control valve.

[0028] In an optional embodiment of this utility model, a compressed air inlet, a safety valve, and a check valve are also included, wherein the compressed air inlet is connected to the second inlet of the heat exchanger through the safety valve and the check valve.

[0029] In an optional embodiment of this utility model, it further includes a condensate tank and a condensate outlet, wherein the second outlet of the heat exchanger is connected to the inlet of the condensate tank, and the outlet of the condensate tank is connected to the condensate outlet; and / or,

[0030] The temperature control system also includes a fourth hand valve and a fifth hand valve. The fourth hand valve is connected between the reactor inlet and the first outlet of the heat exchanger, and the fifth hand valve is connected between the reactor outlet and the constant pressure tank.

[0031] The technical solution of this utility model embodiment involves sequentially connecting a reaction vessel, a second one-way valve, a mixing tank, a circulating pump, and a heat exchanger to form a circulating pipeline. The refrigerant inlet is connected to the constant pressure tank inlet via the first one-way valve. The constant pressure tank outlet and the reaction vessel outlet are connected to the circulating pipeline via the second one-way valve. Therefore, the refrigerant entering through the refrigerant inlet pressurizes the constant pressure tank through the first one-way valve. Since the constant pressure tank is connected to the circulating pipeline, the pressure in the constant pressure tank is equal to the pressure in the circulating pipeline. This pressurizes the refrigerant inside the circulating pipeline, and the change in refrigerant pressure alters its boiling point temperature, thus meeting the client's usage requirements. This solves the problem of how to ensure the refrigerant meets the client's usage requirements without replacing it. Because automatic pressurization does not require electricity, installation is convenient and suitable for various operating conditions, better protecting the system's safe and efficient operation while meeting customer usage requirements.

[0032] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1This is a schematic diagram of a temperature control system provided according to an embodiment of the present utility model.

[0035] The components are as follows: 1. Refrigerant inlet; 2. First check valve; 3. Constant pressure tank; 4. Circulation pipeline; 5. Reactor; 6. Second check valve; 7. Mixing tank; 8. Circulation pump; 9. Heat exchanger; 10. Back pressure valve; 11. Refrigerant outlet; 12. First temperature control valve; 13. First manual valve; 14. First regulating valve; 15. Second regulating valve; 16. Third regulating valve; 17. Third check valve; 18. First pressure sensor; 19. Second pressure sensor; 20. Third pressure sensor; 21. 21. Fourth pressure sensor; 22. First temperature sensor; 23. Second hand valve; 24. First filter; 25. Steam inlet; 26. Switch control valve; 27. Second temperature control valve; 28. Third hand valve; 29. ​​Second filter; 30. Fifth pressure sensor; 31. Compressed air inlet; 32. Safety valve; 33. Check valve; 34. Condensate tank; 35. Condensate outlet; 36. Fourth hand valve; 37. Fifth hand valve; 38. Sixth pressure sensor; 39. Seventh pressure sensor. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] This utility model embodiment provides a temperature control system, such as Figure 1 As shown, the temperature control system includes a refrigerant inlet 1, a first one-way valve 2, a constant pressure tank 3, and a circulation pipeline 4.

[0039] The circulation pipeline 4 is equipped with a reactor 5, a second one-way valve 6, a mixing tank 7, a circulation pump 8, and a heat exchanger 9. The outlet of the reactor 5 is connected to one end of the second one-way valve 6, the other end of the second one-way valve 6 is connected to the first inlet of the mixing tank 7, the outlet of the mixing tank 7 is connected to one end of the circulation pump 8, the other end of the circulation pump 8 is connected to the first inlet of the heat exchanger 9, and the first outlet of the heat exchanger 9 is connected to the inlet of the reactor 5. Thus, under the action of the circulation pump 8, the refrigerant can return to the circulation pump 8 through the heat exchanger 9, the reactor 5, and the second one-way valve 6.

[0040] The refrigerant inlet 1 is connected to the inlet of the constant pressure tank 3 via the first one-way valve 2. The outlet of the constant pressure tank 3 and the outlet of the reactor 5 are connected to the circulation pipeline 4 via the second one-way valve 6. The refrigerant entering through the refrigerant inlet 1 pressurizes the constant pressure tank 3 through the first one-way valve 2. Since the constant pressure tank 3 is connected to the circulation pipeline 4, the pressure of the constant pressure tank 3 is equal to the pressure of the circulation pipeline 4. Thus, the refrigerant inside the circulation pipeline 4 is pressurized, thereby meeting the user's needs.

[0041] For example, if the temperature control system has a temperature range of -20℃ to 130℃, and the client uses a 50% ethylene glycol solution as the refrigerant, this solution has a freezing point of -40℃ and a boiling point of 107℃. Therefore, this medium cannot meet the client's requirements under high-temperature conditions. Research shows that it is only necessary to pressurize the circulation line 4 to 1.5 bar. At this point, the boiling point of the 50% ethylene glycol solution is 136℃, which meets the requirements. By setting the refrigerant inlet pressure of refrigerant inlet 1 to 2 bar, the refrigerant entering through refrigerant inlet 1 pressurizes the constant pressure tank 3 through the first one-way valve 2. Since the constant pressure tank 3 is connected to the circulation line 4, the pressure in the constant pressure tank 3 is equal to the pressure in the circulation line 4, both being 2 bar. At this point, the 50% ethylene glycol solution inside the circulation line 4 is pressurized to 2 bar, meeting the requirements for high-temperature operation.

[0042] The above solution connects the reactor 5, the second one-way valve 6, the mixing tank 7, the circulating pump 8, and the heat exchanger 9 sequentially to form a circulation pipeline 4. The refrigerant inlet 1 is connected to the inlet of the constant pressure tank 3 via the first one-way valve 2. The outlet of the constant pressure tank 3 and the outlet of the reactor 5 are connected to the circulation pipeline 4 via the second one-way valve 6. Therefore, the refrigerant entering through the refrigerant inlet 1 pressurizes the constant pressure tank 3 through the first one-way valve 2. Since the constant pressure tank 3 is connected to the circulation pipeline 4, the pressure in the constant pressure tank 3 is equal to the pressure in the circulation pipeline 4. This pressurizes the refrigerant inside the circulation pipeline 4, and the change in refrigerant pressure alters its boiling point temperature, thus meeting the client's usage requirements. This solves the problem of how to ensure the refrigerant meets the client's requirements without replacing it. Because automatic pressurization does not require electricity, installation is convenient and suitable for various operating conditions, better protecting the system's safe and efficient operation while meeting customer usage requirements.

[0043] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a back pressure valve 10 and a refrigerant outlet 11. The back pressure valve 10 is connected between the constant pressure tank 3 and the refrigerant outlet 11. Since the inlet pressure of the refrigerant inlet 1 is supplied by the client's equipment, the refrigerant pressure may become excessive. Because the circulating pump 8 has a pressurization function, the refrigerant pressure after passing through the circulating pump 8 may be too high. Therefore, by setting up the back pressure valve 10, it automatically opens when the pressure is too high, relieving the pressure inside the circulating pipeline 4 to the refrigerant outlet 11, thereby preventing excessive pressure inside the circulating pipeline 4. Since automatic pressure relief requires no electricity, installation is convenient and suitable for various operating conditions, better protecting the system's safe and efficient operation while meeting customer operating requirements.

[0044] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a first temperature control valve 12, through which the outlet of the reactor 5 is connected to the refrigerant outlet 11. The first temperature control valve 12 can adjust the flow rate by changing the valve opening degree, thereby eliminating the impact of load fluctuations and restoring the temperature to the set value. Therefore, the first temperature control valve 12 in this solution can regulate the refrigerant temperature at the refrigerant outlet 11, effectively preventing overcooling or overheating and protecting the temperature control system from damage.

[0045] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a first-hand valve 13, which is connected between the back pressure valve 10 and the refrigerant outlet 11. By setting the first-hand valve 13, the user can manually adjust its position as needed to achieve the desired temperature control effect. The first-hand valve 13 plays a role in flexible adjustment and precise control within the temperature control system, and its flexibility is particularly important when rapid temperature adjustments are required or when system malfunctions occur.

[0046] In an optional embodiment of this utility model, the temperature control system further includes a first regulating valve 14, through which the refrigerant inlet 1 is connected to the second inlet of the mixing tank 7; through the first regulating valve 14, when the first regulating valve 14 is opened, the refrigerant entering the refrigerant inlet 1 can enter the circulation pump 8, so that there is refrigerant in the circulation pipeline 4.

[0047] In optional embodiments of this utility model, such as Figure 1As shown, the temperature control system also includes a second regulating valve 15, which is connected between the mixing tank 7 and the circulating pump 8. By setting the second regulating valve 15 before the circulating pump 8, backflow of the refrigerant can be prevented and pressure surges can be mitigated, protecting the safety of the circulating pipeline 4 and the temperature control system. In some embodiments, the second regulating valve 15 is a ball valve. Ball valves have superior sealing performance, are suitable for high-temperature media, reduce valve hysteresis factors, and have a long service life.

[0048] In an optional embodiment of this invention, the temperature control system further includes a third regulating valve 16, which is connected between the circulating pump 8 and the heat exchanger 9. By providing the third regulating valve 16 after the circulating pump 8, backflow of the refrigerant can be prevented and pressure surges can be mitigated, protecting the safety of the circulating pipeline 4 and the temperature control system. In some embodiments, the third regulating valve 16 is a ball valve.

[0049] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a third check valve 17, which is located between the circulating pump 8 and the heat exchanger 9; wherein, the third check valve 17 can prevent the refrigerant from flowing in the opposite direction.

[0050] In an optional embodiment of this utility model, the temperature control system further includes a first pressure detection element 18, which is connected between the second regulating valve 15 and the circulating pump 8. The first pressure detection element 18 refers to a component capable of detecting pressure; in some embodiments, the first pressure detection element 18 includes at least one of a pressure sensor and a pressure gauge. By providing the first pressure detection element 18, the pressure in the circulation pipeline 4 at the front end of the circulating pump 8 can be easily determined.

[0051] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a second pressure detection element 19, which is connected between the circulating pump 8 and the third regulating valve 16. The second pressure detection element 19 is a component capable of detecting pressure; in some embodiments, it includes at least one of a pressure sensor and a pressure gauge. By providing the second pressure detection element 19, the pressure in the circulation pipeline 4 downstream of the circulating pump 8 can be easily determined.

[0052] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a third pressure detection element 20, which is connected between the heat exchanger 9 and the reactor 5. The third pressure detection element 20 is a component capable of detecting pressure; in some embodiments, it includes at least one of a pressure sensor and a pressure gauge. By providing the third pressure detection element 20, the pressure of the refrigerant entering the reactor 5 can be easily determined.

[0053] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a fourth pressure detection element 21, which is connected between the constant pressure tank 3 and the reaction vessel 5. The fourth pressure detection element 21 is a component capable of detecting pressure; in some embodiments, it includes at least one of a pressure sensor and a pressure gauge. By providing the fourth pressure detection element 21, the pressure of the refrigerant discharged from the reaction vessel 5 can be easily determined.

[0054] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a first temperature detection element 22, which is connected between the heat exchanger 9 and the reactor 5. The first temperature detection element 22 refers to a component capable of detecting temperature; in some embodiments, it includes a temperature sensor. By providing the first temperature detection element 22, the temperature of the refrigerant entering the reactor 5 can be detected.

[0055] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a second manual valve 23, which is connected between the refrigerant inlet 1 and the first one-way valve 2. The second manual valve 23, as a control component, allows for convenient manual adjustment of the refrigerant flow rate after being installed at the refrigerant inlet 1. This flexibility allows the system to be fine-tuned according to actual needs, ensuring that the refrigerant supply matches the heat load of the temperature control system. By adjusting the opening of the second manual valve 23, the flow rate of refrigerant entering the temperature control system can be controlled, thereby achieving precise temperature control of the system.

[0056] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a first filter 24, which is connected between the refrigerant inlet 1 and the first one-way valve 2. The first filter 24 removes solid impurities from the refrigerant, such as metal fragments, oxides, and dust. If these impurities enter the temperature control system, they may adhere to the inner walls of pipes, the surface of the heat exchanger, or system components, leading to decreased heat exchange efficiency, reduced system performance, and even component blockage or damage. The first filter 24 ensures the cleanliness of the refrigerant, thereby protecting system components from impurities and extending the system's service life.

[0057] In optional embodiments of this utility model, such as Figure 1As shown, the temperature control system also includes a steam inlet 25, an on / off control valve 26, and a second temperature control valve 27. The steam inlet 25 is connected to the second inlet of the heat exchanger 9 through the on / off control valve 26 and the second temperature control valve 27. In this temperature control system, the steam inlet 25, the on / off control valve 26, the second temperature control valve 27, and the heat exchanger 9 together form an important steam control loop. The steam inlet 25 is used to supply steam, and the on / off control valve 26 can precisely control the steam flow, enabling rapid opening and closing of the steam. The second temperature control valve 27 can automatically adjust the valve opening according to the system's temperature requirements, thereby precisely controlling the steam temperature entering the heat exchanger 9. This helps maintain the stability of the system temperature and ensures the efficient operation of the heat exchange process. In some embodiments, when the system temperature exceeds a preset value, the second temperature control valve 27 automatically reduces its opening, reducing the amount of steam entering to prevent the system from overheating. This helps protect system components from high-temperature damage and extends their service life.

[0058] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a third hand valve 28, which is connected between the steam inlet 25 and the on / off control valve 26. The third hand valve 28 allows manual control of the steam's on / off state and flow rate. By adjusting the opening of the third hand valve 28, the amount of steam entering the system can be precisely controlled to meet the system's heating requirements. In the event of a steam system malfunction or an emergency shutdown, the third hand valve 28 can be quickly closed, cutting off the steam supply. This helps prevent the accident from escalating and protects equipment and personnel safety.

[0059] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a second filter 29, which is connected between the steam inlet 25 and the on / off control valve 26. This filter can intercept and remove impurities such as particulate matter, oxides, and grease from the steam. This improves steam quality, protects system components, and ensures personnel safety.

[0060] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a fifth pressure detection element 30, which is connected between the steam inlet 25 and the on / off control valve 26. The fifth pressure detection element 30 is a component capable of detecting pressure; in some embodiments, it includes at least one of a pressure sensor and a pressure gauge. By providing the fifth pressure detection element 30, the pressure of the steam entering from the steam inlet can be easily determined.

[0061] In optional embodiments of this utility model, such as Figure 1As shown, the temperature control system also includes a compressed air inlet 31, a safety valve 32, and a check valve 33. The compressed air inlet 31 is connected to the second inlet of the heat exchanger 9 through the safety valve 32 and the check valve 33. The compressed air inlet 31 is the channel through which the temperature control system obtains compressed air, allowing it to introduce an appropriate amount of compressed air to meet specific process requirements. The main function of the safety valve 32 is to prevent excessive pressure within the temperature control system. When the pressure at the compressed air inlet 31 exceeds the preset safety value of the temperature control system, the safety valve 32 will automatically open to release the excess pressure, thus preventing damage to the temperature control system due to overpressure. The safety valve 32 also enhances the overall safety of the temperature control system. The main function of the check valve 33 is to prevent backflow of compressed air within the system. When compressed air enters the system from the inlet, the check valve 33 ensures that it flows only in a predetermined direction, entering the heat exchanger 9 or other target components. This helps maintain system stability and efficiency, preventing energy loss or equipment damage caused by backflow.

[0062] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a condensate tank 34 and a condensate outlet 35. The second outlet of the heat exchanger 9 is connected to the inlet of the condensate tank 34, and the outlet of the condensate tank 34 is connected to the condensate outlet 35. Thus, the condensate generated by the heat exchanger 9 can be stored in the condensate tank 34 and then discharged through the condensate outlet 35.

[0063] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a fourth hand valve 36 and a fifth hand valve 37. The fourth hand valve 36 is connected between the inlet of the reactor 5 and the first outlet of the heat exchanger 9, and the fifth hand valve 37 is connected between the outlet of the reactor 5 and the constant pressure tank 3.

[0064] The fourth hand valve 36 controls the inflow of refrigerant into the reactor 5. By adjusting the opening of the fourth hand valve 36, the refrigerant can be ensured to enter the reactor 5 at an appropriate flow rate and pressure, thus meeting the requirements of the chemical reaction. In case of an emergency or when the reaction needs to be stopped, the fourth hand valve 36 can be quickly closed to cut off the refrigerant supply. This helps prevent the accident from escalating and protects the reactor 5 and its internal components from damage.

[0065] The fifth hand valve 37 controls the outflow of refrigerant from reactor 5. By adjusting the opening of the fifth hand valve 37, it can be ensured that the refrigerant is discharged from reactor 5 at an appropriate flow rate and pressure, thereby meeting the requirements of subsequent processes. In some cases, the fifth hand valve 37 can play a crucial role in preventing refrigerant backflow from damaging reactor 5 or affecting the reaction effect. By closing the fifth hand valve 37, it can be ensured that the refrigerant will not flow back into reactor 5.

[0066] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a sixth pressure detection element 38, which is disposed between the refrigerant inlet 1 and the first regulating valve 14. The sixth pressure detection element 38 refers to a component capable of detecting pressure. In some embodiments, the sixth pressure detection element 38 includes at least one of a pressure sensor and a pressure gauge. By providing the sixth pressure detection element 38, the pressure of the refrigerant entering from the refrigerant inlet 1 can be easily determined.

[0067] In optional embodiments of this utility model, such as Figure 1 As shown, the temperature control system also includes a seventh pressure detection element 39, which is disposed between the compressed air inlet 31 and the safety valve 32. The seventh pressure detection element 39 is a component capable of detecting pressure. In some embodiments, the seventh pressure detection element 39 includes at least one of a pressure sensor and a pressure gauge. By providing the seventh pressure detection element 39, the pressure of the compressed air entering from the compressed air inlet 31 can be easily determined.

[0068] In one specific embodiment, the temperature control system operates within a range of -20°C to 130°C. The client uses a 50% ethylene glycol solution as the refrigerant. This solution has a freezing point of -40°C and a boiling point of 107°C, meaning it cannot meet the client's requirements under high-temperature conditions. The temperature control system employs a closed-loop circulation system. Research indicates that only 1.5 bar needs to be pressurized in circulation line 4. At this pressure, the boiling point of the 50% ethylene glycol solution is 136°C, which meets the requirements.

[0069] By setting the inlet pressure of the refrigerant at the refrigerant inlet 1 to 2 bar, the refrigerant entering through the refrigerant inlet 1 pressurizes the constant pressure tank 3 through the first one-way valve 2. Since the constant pressure tank 3 is connected to the circulation pipeline 4, the pressure of the constant pressure tank 3 is equal to the pressure of the circulation pipeline 4, both being 2 bar. At this time, the 50% ethylene glycol solution inside the circulation pipeline 4 is pressurized to 2 bar, meeting the requirements for high-temperature operation.

[0070] Because the pressure at the refrigerant inlet 1 is due to the supply equipment of the client, the refrigerant pressure is too high at this time. Since the circulating pump 8 has a pressurization function, the pressure of the 50% ethylene glycol solution will reach 7 bar after passing through the circulating pump 8. The pressure resistance range of the client's reactor 5 is limited. At this time, by setting the back pressure valve 10, when the inlet pressure of the back pressure valve 10 is greater than 2.5 bar, it will automatically open to relieve the internal pressure of the circulating pipeline 4 to the refrigerant outlet 11, thereby preventing the pressure from being too high.

[0071] Therefore, this temperature control system can automatically pressurize and depressurize without the need for electricity. It is easy to install and suitable for use under various working conditions, meeting the needs of customers while better protecting the system for safe and efficient operation.

[0072] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0073] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A temperature control system, characterized in that, This includes the refrigerant inlet, the first check valve, the constant pressure tank, and the circulation pipeline; The circulation pipeline is equipped with a reaction vessel, a second one-way valve, a mixing tank, a circulation pump, and a heat exchanger; The outlet of the reactor is connected to one end of the second one-way valve, the other end of the second one-way valve is connected to the first inlet of the mixing tank, the outlet of the mixing tank is connected to one end of the circulating pump, the other end of the circulating pump is connected to the first inlet of the heat exchanger, and the first outlet of the heat exchanger is connected to the inlet of the reactor. The refrigerant inlet is connected to the constant pressure tank inlet via the first check valve, and the circulation pipeline between the constant pressure tank outlet and the reactor outlet and the second check valve is connected.

2. The temperature control system according to claim 1, characterized in that, It also includes a back pressure valve and a refrigerant outlet, the back pressure valve being connected between the constant pressure tank and the refrigerant outlet; and / or, the temperature control system further includes a first temperature control valve, the outlet of the reactor being connected to the refrigerant outlet through the first temperature control valve.

3. The temperature control system according to claim 2, characterized in that, It also includes a first hand valve, which is connected between the back pressure valve and the refrigerant outlet.

4. The temperature control system according to claim 1, characterized in that, It also includes at least one of the following: A first regulating valve is provided, through which the refrigerant inlet is connected to the second inlet of the mixing tank; A second regulating valve is connected between the mixing tank and the circulating pump; A third regulating valve is connected between the circulating pump and the heat exchanger.

5. The temperature control system according to claim 4, characterized in that, It also includes at least one of the following: A third check valve is located between the circulating pump and the heat exchanger. A first pressure sensing element is connected between the second regulating valve and the circulating pump; A second pressure sensing element is connected between the circulating pump and the third regulating valve; A third pressure sensing element is connected between the heat exchanger and the reactor. A fourth pressure sensing element is connected between the constant pressure tank and the reaction vessel; A first temperature sensing element is connected between the heat exchanger and the reactor.

6. The temperature control system according to claim 1, characterized in that, It also includes a second hand valve, which is connected between the refrigerant inlet and the first check valve; and / or, The temperature control system also includes a first filter, which is connected between the refrigerant inlet and the first one-way valve.

7. The temperature control system according to any one of claims 1 to 6, characterized in that, It also includes a steam inlet, a switch control valve, and a second temperature control valve, wherein the steam inlet is connected to the second inlet of the heat exchanger through the switch control valve and the second temperature control valve.

8. The temperature control system according to claim 7, characterized in that, It also includes at least one of the following: A third valve is connected between the steam inlet and the on / off control valve; A second filter is connected between the steam inlet and the on / off control valve; A fifth pressure sensor is connected between the steam inlet and the on / off control valve.

9. The temperature control system according to any one of claims 1 to 6, characterized in that, It also includes a compressed air inlet, a safety valve, and a check valve, wherein the compressed air inlet is connected to the second inlet of the heat exchanger through the safety valve and the check valve.

10. The temperature control system according to any one of claims 1 to 6, characterized in that, It also includes a condensate tank and a condensate outlet, wherein the second outlet of the heat exchanger is connected to the inlet of the condensate tank, and the outlet of the condensate tank is connected to the condensate outlet; and / or, The temperature control system also includes a fourth hand valve and a fifth hand valve. The fourth hand valve is connected between the reactor inlet and the first outlet of the heat exchanger, and the fifth hand valve is connected between the reactor outlet and the constant pressure tank.

Images