Multi-cycle integrated temperature control system
By designing a multi-cycle integrated temperature control system, using the combination of heat exchanger and regulating valve, the existing temperature control system equipment is solved, and the problems of complexity, unstable temperature difference control and long heating time are achieved, and a fast, accurate and stable temperature control effect is achieved.
Patent Information
- Application Number
- CN202422200337.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing temperature control system has complex equipment and unstable temperature difference control, especially when high flow operations are difficult to control in qualified ranges, and the heating process takes a long time.
A multi-cycle integrated temperature control system is designed, including a first external circulation circuit, an internal circulation circuit and a second external circulation circuit. Through the combination of a heat exchanger and a regulating valve, efficient heating and recycling of the heat conducting medium is achieved, ensuring that the client equipment reaches the required temperature while controlling the stability of the temperature difference.
It achieves a rapid temperature increase response rate, high temperature control accuracy, stable temperature difference control during the temperature control process, and can achieve precise temperature control even during large flow operations.
Smart Images
Figure CN223038339U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temperature control, and particularly relates to a multi-cycle integrated temperature control system. Background Art
[0002] In the industrial production process, the requirements for temperature control systems by various products are getting higher and higher. In many industrial and civil fields, such as the die-casting industry, semiconductor manufacturing, lithium batteries, thin film industry, etc., precise temperature control is required to ensure the product yield and extend its service life. The temperature control systems in the prior art include single-cycle temperature control systems and double-cycle temperature control systems. The single-cycle temperature control system is insufficient in temperature adjustment accuracy, so it is not suitable for fields that require precise temperature control. The double-cycle temperature control system has great advantages in achieving precise temperature control. However, the main defects of the existing double-cycle temperature control system are: the equipment is complex, the temperature difference control is unstable, especially when operating with a large flow rate, it is difficult to control the temperature difference within a qualified range. At the same time, when heating, if the difference between the starting temperature and the target temperature of the system is large, the time required for the heating process will also increase accordingly because more time and energy are needed to reach the target temperature.
[0003] In summary, there is still a large room for improvement in the temperature control accuracy, heating response speed, etc. of the temperature control systems in the prior art. Summary of the Utility Model
[0004] This application proposes a multi-cycle integrated temperature control system, aiming to solve the defects in the prior art such as complex equipment of the temperature control system, unstable temperature difference control, and long time required for the heating process.
[0005] The technical solution adopted by the utility model is: a multi-cycle integrated temperature control system, which includes: a first external circulation loop, the first external circulation loop includes a heat exchanger, the inlet of the heat exchanger is connected to the heat source inlet through a first external circulation pipeline, the outlet of the heat exchanger is connected to the heat source outlet through a second external circulation pipeline, a regulating valve is provided on the first external circulation pipeline, and a check valve is provided on the second external circulation pipeline; an internal circulation loop, the internal circulation loop includes an internal circulation pump and a heat transfer medium storage tank that are connected to each other with the heat exchanger to form a loop, the heat transfer medium in the internal circulation loop exchanges heat with the heat transfer medium in the first external circulation loop in the heat exchanger, the heat transfer medium storage tank is provided with a temperature sensor, and the inside of the heat transfer medium storage tank is also connected to a heat transfer medium delivery source, and the temperature of the heat transfer medium delivered by the heat transfer medium delivery source is lower than the temperature of the heat transfer medium in the heat transfer medium storage tank; a second external circulation loop, the second external circulation loop includes an external circulation pump, and the external circulation pump forms a loop with the client and the heat transfer medium storage tank, and a switch valve is provided on each of the pipelines at the inlet and outlet of the client.
[0006] Further, the heat source is steam. The first external circulation pipeline is sequentially provided with a filter, a ball valve, and the regulating valve from the heat source inlet. The inlet and outlet of the regulating valve are also connected through a first bypass pipe. A ball valve is provided on the first bypass pipe, and the inlet and outlet of the regulating valve are respectively connected to the first bypass pipe through a ball valve.
[0007] Further, a pressure gauge, a pressure switch, and a temperature sensor are also provided on the first external circulation pipeline.
[0008] Further, a steam trap and a ball valve are also provided between the check valve and the heat source outlet on the second external circulation pipeline. The inlet and outlet of the steam trap are also connected through a second bypass pipe. A ball valve is provided on the second bypass pipe, and the inlet and outlet of the steam trap are respectively connected to the second bypass pipe through a ball valve.
[0009] Further, butterfly valves are respectively connected to the inlet and outlet of the internal circulation pump.
[0010] Further, a liquid level sensor, a drain pipe, and an overflow pipe are also provided on the heat transfer medium storage tank. A ball valve is provided on the drain pipe.
[0011] Further, the heat transfer medium is water. A water injection port is also provided on the heat transfer medium storage tank. The heat transfer medium delivery source is connected to the heat transfer medium storage tank through a make-up water pipe. A ball valve, a filter, and an electromagnetic valve are provided on the make-up water pipe.
[0012] Further, the second external circulation loop further includes a third bypass pipe. The third bypass pipe is connected in parallel to the client inlet and outlet pipelines. The switching valve on the client inlet and outlet pipelines is arranged between the third bypass pipe and the client. A ball valve is also provided on the third bypass pipe.
[0013] Further, a filter, a pressure gauge, and a drain pipe are also provided on the second external circulation pipeline. A ball valve is provided on the drain pipe. Switching valves are provided at the inlet of the external circulation pump and the outlet of the heat transfer medium storage tank.
[0014] Compared with the prior art, in the present utility model, a heat source (such as steam) is connected to a pipeline. Through the opening and closing of a regulating valve, heat exchange is carried out with the medium in the inner circulation pipe via a heat exchanger. The condensate water and the steam mixture after heat exchange pass through a steam trap and flow out. During this period, an inner circulation pump in the inner circulation pipeline pumps out the medium in the heat-conducting medium storage tank (i.e., the water tank), passes through the heat exchanger, and then flows back into the water tank, circulating repeatedly to raise the water temperature in the water tank. The medium that has undergone heat exchange in the water tank is transported to the client device via an outer circulation pump and then returns to the water tank for circulation until the client device reaches the required temperature. The required temperature is detected and set through a direct-insertion temperature sensor in the water tank, and the temperature of the client device is controlled by controlling the opening and closing of the regulating valve in the outer circulation system. Before the client device in this application is used, the first outer circulation system and the inner circulation system can be controlled to work in advance to preheat the medium in the water tank. When the client device is used, the heating-up time can be shortened, the heating response rate is fast, and at the same time, it also has the advantages of high temperature control accuracy and stable temperature difference control during the temperature control process. Even during large-flow operations, accurate temperature control can be achieved. Brief Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0016] Figure 1 It is a schematic connection structure diagram of the temperature control system in the present utility model.
[0017] The main reference numerals in this application are as follows:
[0018] A, the first outer circulation loop; 9, heat exchanger; A1, the first outer circulation pipeline; 3, filter; 4, ball valve; A2, the first bypass pipe; A3, the second outer circulation pipeline; 8, regulating valve; 10, check valve; 5, pressure gauge; 6, pressure switch; 7, temperature sensor; 11, steam trap; A4, the second bypass pipe; 22, butterfly valve; 24, liquid level sensor; 28, drain pipe; 27, overflow pipe; B, the inner circulation loop; 21, inner circulation pump; 23, heat-conducting medium storage tank; 41, heat-conducting medium delivery source; 26, water injection port; B1, make-up water pipe; 40, solenoid valve; C, the second outer circulation loop; 30, outer circulation pump; 31, client; 25, on-off valve; C1, the third bypass pipe; 29, drain pipe. Detailed Embodiments
[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0020] In the following description, reference is made to the accompanying drawings, which describe several embodiments of the present application. It should be understood that other embodiments may also be used, and mechanical composition, structure, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is only defined by the claims of the published patent. The terms used herein are only for describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "beneath", "lower part", "above", "upper part", etc., may be used in the text to facilitate the description of the relationship between one element or feature shown in the figure and another element or feature.
[0021] The present application proposes a multi-cycle integrated temperature control system, as Figure 1 shown, the multi-cycle integrated temperature control system mainly includes a first external circulation loop A, an internal circulation loop B, and a second external circulation loop C. The first external circulation loop A serves as the heating part of the entire temperature control system and is used to introduce a heat source to heat the circulating heat-conducting medium in the system. The internal circulation loop B exchanges heat with the first external circulation loop A through a heat exchanger 9. The internal circulation loop B is used to provide heat to the second external circulation loop C. The second external circulation loop C is connected to the client 31 to form a circulation loop, thereby performing circulating heating on the client 31.
[0022] Specifically, the first external circulation loop A includes a heat exchanger 9. The inlet of the heat exchanger 9 is connected to the heat source inlet through a first external circulation pipeline A1, and the outlet of the heat exchanger 9 is connected to the heat source outlet through a second external circulation pipeline A3. The heat exchanger 9 is used to achieve heat exchange and transfer the heat of the heat source (steam) to the fluid in the internal circulation loop B. The first external circulation pipeline A1 extends from the heat source inlet to the inlet of the heat exchanger 9. A regulating valve 8 is provided on the first external circulation pipeline A1 to adjust the fluid flow rate and pressure and precisely control the amount of fluid entering the heat exchanger 9, thereby controlling the heat exchange efficiency. The second external circulation pipeline A3 extends from the outlet of the heat exchanger 9 to the heat source outlet. A check valve 10 is provided on the second external circulation pipeline A3. The check valve 10 on the second external circulation pipeline A3 is used to prevent fluid backflow.
[0023] In this embodiment, the heat source is steam. The first external circulation pipeline A1 is successively provided with a filter 3, a ball valve 4, and a regulating valve 8 from the heat source inlet. The filter 3 is the first component of the first external circulation pipeline A1 from the heat source inlet. The main function of the filter 3 is to remove impurities in the steam, such as particulate matter, rust slag, etc. If these impurities enter the system, they will cause blockage or wear of pipelines and equipment (such as heat exchanger 9, regulating valve 8, etc.), thereby affecting the efficiency and lifespan of the system. By removing impurities, the filter 3 protects subsequent equipment from contamination and damage, ensuring the long-term stable operation of the entire system. The ball valve 4 is located behind the filter 3. The ball valve 4 is used to control the flow of steam, and can fully open or close the steam passage. Moreover, the inlet and outlet of the regulating valve 8 are also connected through a first bypass pipe A2. A ball valve 4 is also provided on the first bypass pipe A2, and the inlet and outlet of the regulating valve 8 are each connected to the first bypass pipe A2 through a ball valve 4. This facilitates manual control of the system. When system maintenance or component replacement is required, closing the ball valve 4 can isolate the system, preventing the steam from flowing continuously, improving the safety and convenience of maintenance. In case of an emergency, the ball valve 4 can quickly cut off the steam flow, preventing the accident from spreading. The regulating valve 8 can be integrated with an automated control system to achieve precise temperature and flow control, improving the automation level and operation efficiency of the system. Additionally, a pressure gauge 5, a pressure switch 6, and a temperature sensor 7 are also provided on the first external circulation pipeline A1. The pressure gauge 5 displays the pressure inside the pipeline in real time, facilitating monitoring and adjustment. When the pressure exceeds the set value, it automatically cuts off or alarms to protect the safety of the system. The temperature sensor 7 monitors the fluid temperature in real time, providing data support for precise temperature control.
[0024] Between the check valve 10 and the heat source outlet of the second external circulation pipeline A3, a steam trap 11 and a ball valve 4 are also provided. Moreover, the inlet and outlet of the steam trap 11 are also connected through a second bypass pipe A4. A ball valve 4 is provided on the second bypass pipe A4, and the inlet and outlet of the steam trap 11 are each connected to the second bypass pipe A4 through a ball valve 4. In the second external circulation pipeline A3, after the steam exchanges heat in the heat exchanger 9 and liquefies, the steam trap 11 can be used to remove condensate and non-condensable gases in the system. The inlet and outlet of the steam trap 11 are each connected to the second bypass pipe A4 through a ball valve 4. The function of these ball valves 4 is to control the connection state between the steam trap 11 and the second bypass pipe A4, so as to adjust the flow in the system as needed. The inlet and outlet of the steam trap 11 are connected through the second bypass pipe A4. The function of the second bypass pipe A4 is to divert or connect the pipeline to the main pipeline when needed to meet the operation requirements of the system, and its function is similar to that of the first bypass pipe A2.
[0025] Further, the inner circulation loop B includes an inner circulation pump 21 and a heat transfer medium storage tank 23. The heat exchanger 9 is connected to the inner circulation pump 21 and the heat transfer medium storage tank 23 to form a loop. The heat transfer medium in the inner circulation loop B exchanges heat with the heat transfer medium in the first outer circulation loop A in the heat exchanger 9. The heat transfer medium storage tank 23 is provided with a temperature sensor 7, and the inside of the heat transfer medium storage tank 23 is also connected to a heat transfer medium supply source 41. The temperature of the heat transfer medium supplied by the heat transfer medium supply source 41 is lower than the temperature of the heat transfer medium in the heat transfer medium storage tank 23. Butterfly valves 22 are connected to the inlet and outlet of the inner circulation pump 21 respectively. The inner circulation pump 21 is used to circulate the heat transfer medium to flow in the inner circulation loop B. By providing sufficient power, the heat transfer medium is pumped from the heat transfer medium storage tank 23 for circulation and pushed into the heat exchanger 9 for heat exchange. The heat transfer medium storage tank 23 is a container in the inner circulation loop B for storing the heat transfer medium. A temperature sensor 7 (such as a direct insertion type temperature sensor 7) is equipped in the heat transfer medium storage tank 23 to monitor the temperature of the heat transfer medium. In addition, the inside of the heat transfer medium storage tank 23 is also connected to the heat transfer medium supply source 41 to obtain the heat transfer medium from the supply source. In this embodiment, the heat transfer medium in the inner circulation loop B is water, and the corresponding heat transfer medium supply source 41 is a water supply source. Butterfly valves 22 are connected to the inlet and outlet of the inner circulation pump 21 respectively to control the valves at the inlet and outlet of the inner circulation pump 21. By adjusting the opening degree of the butterfly valve 22, the flow rate and pressure of the inner circulation pump 21 can be controlled to meet the requirements of the inner circulation loop B.
[0026] Further, the second circulation loop includes an outer circulation pump 30. The outer circulation pump 30 forms a loop with the client 31 and the heat transfer medium storage tank 23. The outer circulation pump 30 is responsible for pushing the heat transfer medium to flow in the second circulation loop, transporting the heat transfer medium from the heat transfer medium storage tank 23 to the client 31, and completing the circulation of the entire loop. A switching valve 25 is provided on the pipeline at the inlet and outlet of the client 31 respectively. These valves are used to control the flow rate and path of the heat transfer medium entering and leaving the client 31. By adjusting these switching valves 25, the client 31 can be isolated or connected; a liquid level sensor 24, a drain pipe 28 and an overflow pipe 27 are also provided on the heat transfer medium storage tank 23. A ball valve 4 is provided on the drain pipe 28. The liquid level sensor 24 is used to monitor the liquid level in the heat transfer medium storage tank 23 to ensure that the liquid is at a safe and effective level. The drain pipe 28 is used to discharge impurities or excess liquid in the heat transfer medium storage tank 23. The overflow pipe 27 prevents overflow when the heat transfer medium storage tank 23 is overfilled, maintaining the safe operation of the system. The ball valve 4 is installed on the drain pipe 28 to control the opening and closing of the draining operation.
[0027] Further, a water injection port 26 is also provided on the heat conduction medium storage tank 23. The heat conduction medium delivery source 41 is connected to the heat conduction medium storage tank 23 through a make-up water pipe B1. A ball valve 4, a filter 3, and a solenoid valve 40 are provided on the make-up water pipe B1. The water injection port 26 is used to add water to the heat conduction medium storage tank 23, which may be used when initially starting the system or when it is necessary to supplement the heat conduction medium during operation. The make-up water pipe B1 connects the heat conduction medium delivery source 41 (such as a water tank or a water supply system) and the heat conduction medium storage tank 23 to ensure that the heat conduction medium can be supplemented quickly and accurately when needed. The ball valve 4 is installed on the make-up water pipe B1 and is used to manually control the inflow of the heat conduction medium, and can open or close the make-up water operation, which is convenient for daily maintenance and operation in case of emergency. The filter 3 is used to remove impurities in the heat conduction medium entering the heat conduction medium storage tank 23, protect other devices in the system from damage by particulate matter, and ensure the purity of the heat conduction medium and the stable operation of the system. The solenoid valve 40 is also a key component installed on the make-up water pipe B1. It can automatically control the make-up water process by electric control. When the system detects that the liquid level in the heat conduction medium storage tank 23 is lower than the set value, the solenoid valve 40 can automatically open for make-up water operation; when the liquid level returns to normal, the solenoid valve 40 automatically closes to prevent overfilling.
[0028] In addition, the second circulation loop further includes a third bypass pipe C1. The third bypass pipe C1 is connected in parallel to the inlet and outlet pipelines of the client 31. A switching valve 25 on the inlet and outlet pipelines of the client 31 is provided between the third bypass pipe C1 and the client 31. A ball valve 4 is also provided on the third bypass pipe C1. The third bypass pipe C1 being connected in parallel to the inlet and outlet pipelines of the client 31 enables the heat conduction medium to flow directly around the client 31. This design provides a kind of flexibility to ensure the normal operation of the loop in some cases (such as when the client 31 needs maintenance or fails). A ball valve 4 is also provided on the third bypass pipe C1 to control the opening and closing of the bypass flow path. A filter 3, a pressure gauge 5, and a drain pipe 29 are also provided on the second circulation loop. A ball valve 4 is provided on the drain pipe 29. Switching valves 25 are provided at the inlet of the external circulation pump 30 and the outlet of the heat conduction medium storage tank 23. The filter 3 is installed on the second circulation loop to remove impurities in the heat conduction medium, protect the pump and other devices from damage by particulate matter, and keep the system clean and operate efficiently. The pressure gauge 5 is used to monitor the pressure in the second circulation loop to ensure the safe operation of the system within the set pressure range. The drain pipe 29 is used when the system needs to relieve pressure or discharge some heat conduction medium. A ball valve 4 is also provided on the drain pipe 29 to control the drain operation.
[0029] The utility model relates to a multi - cycle integrated temperature control system. A heat source (such as steam) is connected to a pipeline. Through the opening and closing of a regulating valve, heat exchange is carried out with the medium in the inner - circulation pipe via a heat exchanger. The condensate water and the steam mixture after heat exchange pass through a steam trap and flow out. During this period, an inner - circulation pump in the inner - circulation pipeline pumps out the medium in the heat - conducting medium storage tank (i.e., water tank), flows through the heat exchanger, and then flows back into the water tank, circulating repeatedly to raise the water temperature in the water tank. The medium that has undergone heat exchange in the water tank is transported to the client device via an outer - circulation pump and then returns to the water tank for circulation until the client device reaches the required temperature. The required temperature is detected and set through a direct - insertion temperature sensor in the water tank, and the temperature of the client device is controlled by controlling the opening and closing of the regulating valve in the outer - circulation system. Before the client device in this application is used, the first outer - circulation system and the inner - circulation system can be controlled to work in advance to pre - heat the medium in the water tank. When the client device is used, the heating - up time can be shortened, the heating - up response rate is fast, and at the same time, it also has the advantages of high temperature - control accuracy and stable temperature - difference control during the temperature - control process. Even during large - flow operations, an accurate temperature - control effect can be achieved.
[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A multi-circulation integrated temperature control system, characterized in that: include: a first external circulation loop, wherein the first external circulation loop comprises a heat exchanger, wherein the inlet of the heat exchanger is connected to the inlet of the heat source through a first external circulation pipeline, and the outlet of the heat exchanger is connected to the outlet of the heat source through a second external circulation pipeline, wherein a regulating valve is provided on the first external circulation pipeline, and a check valve is provided on the second external circulation pipeline; An inner circulation loop, the inner circulation loop comprises an inner circulation pump and a heat transfer medium storage box which are connected to the heat exchanger to form a loop, the heat transfer medium in the inner circulation loop and the heat transfer medium in the first outer circulation loop perform heat exchange in the heat exchanger, the heat transfer medium storage box is provided with a temperature sensor, and the inside of the heat transfer medium storage box is also connected to a heat transfer medium delivery source, the temperature of the heat transfer medium delivered by the heat transfer medium delivery source is lower than the temperature of the heat transfer medium in the heat transfer medium storage box; The second external circulation loop includes an external circulation pump, the external circulation pump forms a loop with the client and the heat transfer medium storage box, and a switch valve is respectively provided on the pipeline of the client inlet and outlet.
2. The multi-circulation integrated temperature control system according to claim 1, characterized in that: The heat source is steam, and the first external circulation pipeline is provided with a filter, a ball valve and the regulating valve in sequence from the heat source inlet. The inlet and outlet of the regulating valve are also connected through a first bypass pipe. The first bypass pipe is provided with a ball valve, and the inlet and outlet of the regulating valve are each connected to the first bypass pipe through a ball valve.
3. The multi-circulation integrated temperature control system according to claim 2, characterized in that: The first external circulation pipeline is also provided with a pressure gauge, a pressure switch and a temperature sensor.
4. The multi-circulation integrated temperature control system according to claim 2, characterized in that: The second external circulation pipeline is also provided with a steam trap and a ball valve between the check valve and the heat source outlet, and the inlet and outlet of the steam trap are also connected through a second bypass pipe. The second bypass pipe is provided with a ball valve, and the inlet and outlet of the steam trap are each connected to the second bypass pipe through a ball valve.
5. The multi-circulation integrated temperature control system according to claim 1, characterized in that: The inlet and outlet of the internal circulation pump are respectively connected with a butterfly valve.
6. The multi-circulation integrated temperature control system according to claim 1, characterized in that: The heat-conducting medium storage box is also provided with a liquid level sensor, a sewage pipe and an overflow pipe, and the sewage pipe is provided with a ball valve.
7. The multi-circulation integrated temperature control system according to claim 6, characterized in that: The heat-conducting medium is water, and the heat-conducting medium storage box is also provided with a water injection port. The heat-conducting medium delivery source is connected to the heat-conducting medium storage box through a water supply pipe, and the water supply pipe is provided with a ball valve, a filter and a solenoid valve.
8. The multi-circulation integrated temperature control system according to claim 1, characterized in that: The second external circulation loop also includes a third bypass pipe, which is connected in parallel to the client inlet and outlet pipelines, and the switch valves on the client inlet and outlet pipelines are arranged between the third bypass pipe and the client, and the third bypass pipe is also provided with a ball valve.
9. The multi-circulation integrated temperature control system according to claim 1, characterized in that: The second external circulation loop is also provided with a filter, a pressure gauge and a drain pipe, the drain pipe is provided with a ball valve, and the inlet of the external circulation pump and the outlet of the heat transfer medium storage box are provided with switch valves.