Flow regulating mechanism for heat exchanger

Abstract

The utility model relates to the field of heat exchanger discloses a flow regulating mechanism of heat exchanger, including support plate, support plate is fixed in the outer wall front side of heat exchanger body, the inside of heat exchanger body is equipped with heat exchange pipe, the input of second water pump and the fixed first bypass pipe of delivery pipe intercommunication, the output of second water pump and the fixed second bypass pipe of heat exchange pipe one end intercommunication, in the utility model, through support plate, heat exchange pipe, control piece, PLC controller, first water pump, delivery pipe, flow control module, temperature sensor, second water pump, first bypass pipe and second bypass pipe synergies, system can real -time monitoring liquid state and automatic regulation flow, when first water pump appears the failure, PLC controller automatic identification and switches to second water pump, need not manual stoppage switching, greatly reduces the production interruption because of single point failure, improved the reliability and stability of system.

Description

Technical Field

[0001] This utility model relates to the technical field of heat exchangers, specifically to a flow regulation mechanism for a heat exchanger. Background Technology

[0002] A heat exchanger is an energy conversion device that can transfer heat energy from one fluid to another. In industrial production and daily life, heat exchangers are widely used in many fields, such as chemical, petroleum, refrigeration, and air conditioning.

[0003] The Chinese patent announcement CN219141567U discloses an automatic flow calibration heat exchanger. Its key technical features include a heat exchanger body comprising a housing and a control component, the control component being fixedly connected to the housing; and a heat exchange mechanism comprising a drive pump, a heat exchange tube, a temperature sensing module, and a flow control module. One end of the heat exchange tube is fixedly connected to the output end of the drive pump. The heat exchange tube is disposed within the housing, with both ends penetrating the housing. The other end of the heat exchange tube is fixedly connected to both the temperature sensing module and the flow control module.

[0004] In the above scheme, the liquid to be exchanged is injected into the heat exchange tube through a transmission pump, a temperature sensing module, and a flow control module. This has the following disadvantage: if the transmission pump fails, the entire device needs to be shut down for maintenance. Utility Model Content

[0005] The purpose of this invention is to provide a flow regulation mechanism for a heat exchanger to solve the problem that the entire device needs to be shut down for maintenance when the transmission pump fails.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a flow regulation mechanism for a heat exchanger, comprising a support plate fixed to the front side of the outer wall of the heat exchanger body, a heat exchange tube provided inside the heat exchanger body, both ends of the heat exchange tube penetrating the heat exchanger body and extending toward the front side of the outer wall of the heat exchanger body respectively, a control component fixed to the front side of the outer wall of the heat exchanger body, a PLC controller fixed to the right side of the control component, a first water pump fixed to the top surface of the support plate, the output end of the first water pump fixedly connected to one end of the heat exchange tube, a delivery pipe fixed to the input end of the first water pump, a flow control module fixedly connected to the other end of the heat exchange tube, a temperature sensor fixedly connected to the other end of the heat exchange tube, a second water pump fixed to the top surface of the support plate, a first bypass pipe fixedly connected to the delivery pipe between the input end of the second water pump, a second bypass pipe fixedly connected to the output end of the second water pump and one end of the heat exchange tube, and the first water pump, the flow control module, the temperature sensor, and the second water pump are all electrically connected to the PLC controller.

[0007] Preferably, a coolant inlet is fixedly connected to the top surface of the heat exchanger body, a coolant outlet is fixedly connected to the rear side of the outer wall of the heat exchanger body, and an arc-shaped guide plate is fixedly connected to the inner top surface of the heat exchanger body.

[0008] Preferably, a flow sensor is fixedly connected to the outer wall of the heat exchange tube, and the flow sensor is electrically connected to the PLC controller.

[0009] Preferably, a buzzer is detachably installed on the front side of the outer wall of the heat exchanger body, and the buzzer is electrically connected to the PLC controller.

[0010] Preferably, two threaded grooves are provided on the front side of the outer wall of the heat exchanger body, and fixing plates are fixed on the left and right sides of the buzzer. Threaded holes are provided on one side of each of the two fixing plates, and bolts are threaded into each of the two threaded holes. The threaded ends of the two bolts are respectively threaded into the inner threads of the two threaded grooves.

[0011] Preferably, two sealing rings are fixed between the through-hole of the heat exchanger body and the heat exchange tube.

[0012] Compared with the prior art, the flow regulation mechanism of a heat exchanger that adopts the above technical solution has the following beneficial effects:

[0013] First, during use, through the cooperation of temperature sensors, flow sensors and PLC controller, the system can monitor the liquid status in real time and automatically adjust the flow rate, so that the heat exchange process can adapt to different working conditions and maintain the optimal heat exchange efficiency, avoiding the efficiency loss and energy waste caused by the fixed flow rate of traditional heat exchangers; by designing a redundant structure of the first and second water pumps and equipping them with a first bypass pipe and a second bypass pipe, when the first water pump fails, the PLC controller automatically identifies and switches to the second water pump, without the need for manual shutdown and switching, greatly reducing production interruptions caused by single point failures and improving the reliability and stability of the system;

[0014] Second, during use, the buzzer's alarm function can sound an alarm when the system malfunctions, reminding operators to handle the situation in a timely manner and reducing the risk of larger accidents caused by undetected problems.

[0015] Third, during use, the buzzer features a detachable structure with threaded grooves and a mounting plate, facilitating daily maintenance and replacement. The sealing ring ensures no liquid leakage, contributing to on-site safety and long-term reliable equipment operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a cross-sectional view of the deflector plate in an embodiment.

[0019] Figure 4 For the example Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Support plate; 2. Heat exchanger body; 3. Heat exchange tube; 4. Control components; 5. PLC controller; 6. First water pump; 7. Delivery pipe; 8. Flow control module; 9. Temperature sensor; 10. Second water pump; 11. First bypass pipe; 12. Second bypass pipe; 13. Coolant inlet; 14. Coolant outlet; 15. Arc-shaped guide plate; 16. Flow sensor; 17. Buzzer; 18. Threaded groove; 19. Fixing plate; 20. Threaded hole; 21. Bolt; 22. Sealing ring. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4As shown, a flow regulation mechanism for a heat exchanger includes a support plate 1 fixed to the front side of the outer wall of a heat exchanger body 2. A heat exchange tube 3 is disposed inside the heat exchanger body 2, with both ends of the tube penetrating the body and extending towards the front side of the outer wall. A control component 4 is fixed to the front side of the outer wall of the heat exchanger body 2, and a PLC controller 5 (Siemens S7-200) is fixed to the right side of the control component 4. A first water pump 6 is fixed to the top surface of the support plate 1, with its output end fixedly connected to one end of the heat exchange tube 3. A delivery pipe 7 is fixed to the input end of the first water pump 6, and a flow control module 8 is fixedly connected to the other end of the heat exchange tube 3. The other end is connected to a temperature sensor 9. The top surface of the support plate 1 is fixed with a second water pump 10. The input end of the second water pump 10 is connected to the delivery pipe 7 with a first bypass pipe 11. The output end of the second water pump 10 is connected to one end of the heat exchange tube 3 with a second bypass pipe 12. The first water pump 6, the flow control module 8, the temperature sensor 9, and the second water pump 10 are all electrically connected to the PLC controller 5. The heat exchange tube 3 is equipped with a solenoid valve, which is electrically connected to the PLC controller 5. The top surface of the heat exchanger body 2 is connected to a coolant inlet 13. The rear side of the outer wall of the heat exchanger body 2 is connected to a coolant outlet 14. The inner top surface of the heat exchanger body 2 is fixed with an arc-shaped guide plate 15.

[0023] During operation, the cooling medium is injected into the heat exchanger body 2 through the coolant inlet 13. The coolant flows along the arc-shaped guide plate 15 inside the body, contacting and exchanging heat with the meandering heat exchange tubes 3 arranged inside. After heat exchange, the coolant is discharged through the coolant outlet 14. The meandering layout of the heat exchange tubes 3 increases the heat transfer area and improves the heat exchange efficiency.

[0024] Secondly, the first water pump 6, controlled by the PLC controller 5, draws in the liquid requiring heat exchange from the delivery pipe 7 and injects it into the heat exchange tube 3. During the liquid's flow within the heat exchange tube 3, the temperature sensor 9 collects the liquid temperature in real time and transmits the data to the PLC controller 5. The PLC controller 5 compares the temperature with a set threshold and dynamically adjusts the flow rate via the flow control module 8: when the temperature is too high, the flow rate is increased to enhance heat exchange; when the temperature is below the set value, the flow rate is reduced to avoid excessive heat exchange and energy waste.

[0025] When the first water pump 6 fails, the PLC controller 5 will immediately shut down the first water pump 6 and the solenoid valve, and start the second water pump 10. The second water pump 10 draws liquid from the delivery pipe 7 through the first bypass pipe 11, and then delivers it to the heat exchange pipe 3 through the second bypass pipe 12, ensuring that the heat exchange process is uninterrupted and realizing bypass switching and system redundancy;

[0026] Through the coordinated operation of support plate 1, heat exchange tube 3, control components 4, PLC controller 5, first water pump 6, delivery pipe 7, flow control module 8, temperature sensor 9, second water pump 10, first bypass pipe 11, and second bypass pipe 12, the system can monitor the liquid state in real time and automatically adjust the flow rate, enabling the heat exchange process to adapt to different operating conditions and maintain optimal heat exchange efficiency. This avoids the efficiency loss and energy waste caused by the fixed flow rate of traditional heat exchangers. By designing a redundant structure for the first water pump 6 and the second water pump 10, and equipping them with the first bypass pipe 11 and the second bypass pipe 12, when the first water pump 6 fails, the PLC controller 5 automatically identifies and switches to the second water pump 10 without manual shutdown, significantly reducing production interruptions caused by single-point failures and improving the reliability and stability of the system.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, a flow sensor 16 is fixedly connected to the outer wall of the heat exchange tube 3, and the flow sensor 16 is electrically connected to the PLC controller 5.

[0028] During operation, if the flow sensor 16 detects insufficient flow in the heat exchange tube 3 (e.g., due to a malfunction of the first water pump 6), the PLC controller 5 will immediately shut down the first water pump 6 and the solenoid valve, and start the second water pump 10. The second water pump 10 draws liquid from the delivery pipe 7 through the first bypass pipe 11, and then delivers it to the heat exchange tube 3 through the second bypass pipe 12, ensuring that the heat exchange process is uninterrupted and realizing bypass switching and system redundancy.

[0029] like Figure 1 , Figure 2 and Figure 4 As shown, a buzzer 17 is detachably installed on the front side of the outer wall of the heat exchanger body 2, and the buzzer 17 is electrically connected to the PLC controller 5.

[0030] During use, when the flow sensor 16 detects that the flow rate inside the heat exchange tube 3 is too low, it will immediately transmit this abnormal information to the PLC controller 5. The PLC controller 5 will react quickly and activate the buzzer 17 to emit a loud alarm sound, so as to remind them that the first water pump 6 may have malfunctioned. The operators can check and maintain it as soon as possible based on the alarm information.

[0031] like Figure 1 , Figure 2 and Figure 4As shown, two threaded grooves 18 are opened on the front side of the outer wall of the heat exchanger body 2. Fixing plates 19 are fixed on the left and right sides of the buzzer 17. Threaded holes 20 are opened on one side of the two fixing plates 19 respectively. Bolts 21 are threaded into the two threaded holes 20 respectively. The threaded ends of the two bolts 21 are threaded into the two threaded grooves 18 respectively. Two sealing rings 22 are fixed between the heat exchanger body 2 and the heat exchange tube 3.

[0032] During use, when installing the buzzer 17, the operator only needs to pass the two bolts 21 through the two threaded holes 20 respectively, and then rotate the bolts 21 to make their threaded ends tightly threaded into the two threaded grooves 18 on the front side of the outer wall of the heat exchanger body 2. This securely installs the buzzer 17 onto the heat exchanger body 2. For disassembly, the operator simply unscrews the bolts 21 and removes the buzzer 17, facilitating maintenance and replacement. The sealing ring 22, utilizing its elastic material properties, fits tightly between the penetration point of the heat exchanger body 2 and the heat exchange tube 3, forming a reliable sealing barrier that prevents liquid leakage and ensures the normal operation of the heat exchange process.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flow regulation mechanism for a heat exchanger, comprising a support plate (1), said support plate (1) being fixed to the front side of the outer wall of the heat exchanger body (2), characterized in that, The heat exchanger body (2) is equipped with heat exchange tubes (3) inside. Both ends of the heat exchange tubes (3) penetrate the heat exchanger body (2) and extend towards the front side of the outer wall of the heat exchanger body (2). A control component (4) is fixed to the front side of the outer wall of the heat exchanger body (2). A PLC controller (5) is fixed to the right side of the control component (4). A first water pump (6) is fixed to the top surface of the support plate (1). The output end of the first water pump (6) is fixedly connected to one end of the heat exchange tube (3). A delivery pipe (7) is fixed to the input end of the first water pump (6). The heat exchange tubes (3) The other end is connected to a flow control module (8), the other end of the heat exchange tube (3) is connected to a temperature sensor (9), the top surface of the support plate (1) is fixed with a second water pump (10), the input end of the second water pump (10) is connected to the delivery pipe (7) with a first bypass pipe (11), the output end of the second water pump (10) is connected to one end of the heat exchange tube (3) with a second bypass pipe (12), the first water pump (6), the flow control module (8), the temperature sensor (9) and the second water pump (10) are all electrically connected to the PLC controller (5).

2. The flow regulating mechanism for a heat exchanger according to claim 1, characterized in that: The top surface of the heat exchanger body (2) is connected to and fixed with a coolant inlet (13), the rear side of the outer wall of the heat exchanger body (2) is connected to and fixed with a coolant outlet (14), and the inner top surface of the heat exchanger body (2) is fixed with an arc-shaped guide plate (15).

3. The flow regulating mechanism for a heat exchanger according to claim 2, characterized in that: A flow sensor (16) is fixedly connected to the outer wall of the heat exchange tube (3), and the flow sensor (16) is electrically connected to the PLC controller (5).

4. The flow regulating mechanism for a heat exchanger according to claim 1, characterized in that: A buzzer (17) is detachably installed on the front side of the outer wall of the heat exchanger body (2), and the buzzer (17) is electrically connected to the PLC controller (5).

5. The flow regulating mechanism for a heat exchanger according to claim 4, characterized in that: Two threaded grooves (18) are opened on the front side of the outer wall of the heat exchanger body (2). Fixing plates (19) are fixed on the left and right sides of the buzzer (17). Threaded holes (20) are opened on one side of the two fixing plates (19). Bolts (21) are threaded into the two threaded holes (20). The threaded ends of the two bolts (21) are threaded into the two threaded grooves (18).

6. The flow regulating mechanism for a heat exchanger according to claim 1, characterized in that: Two sealing rings (22) are fixed between the heat exchanger body (2) and the heat exchange tube (3).

Images