A device for testing the heat exchange effect of a circular block perforated graphite heat exchanger

Abstract

This invention discloses a device for testing the heat exchange efficiency of a circular block-type graphite heat exchanger, relating to the field of graphite heat exchanger heat exchange efficiency testing technology. It includes a heat exchanger body, with an external mounting assembly connected to the outer side of the body. The external mounting assembly is connected to a testing component. The testing component includes two liquid storage tanks, with a first water inlet pipe and a second water inlet pipe fixedly connected to both ends of each tank. The two sets of first water inlet pipes are respectively connected to the input ends of the heat exchanger's hot flow pipe and cold flow pipe, and the two sets of second water inlet pipes are respectively connected to the output ends of the heat exchanger's hot flow pipe and cold flow pipe. This invention, by setting up the testing component, can guide the flow of cold and hot currents in the heat exchanger and test the heat exchange efficiency. The test results are obvious, and the device can be used repeatedly for a long time. The external mounting assembly allows for quick installation and removal on the graphite heat exchanger, facilitating rapid testing of different graphite heat exchangers. It is practical, convenient, and has good performance.

Description

Technical Field

[0001] This invention relates to the field of graphite heat exchanger heat exchange effect testing technology, specifically a device for testing the heat exchange effect of a circular block perforated graphite heat exchanger. Background Technology

[0002] The petroleum and chemical industries utilize heat exchange equipment extensively in their production processes. The media being exchanged often contain strong acids, strong alkalis, and related salts, which can cause severe corrosion to these equipment, potentially leading to toxic substance leaks, personal injury, and environmental pollution. Therefore, heat exchange equipment must possess not only excellent heat exchange performance but also sufficient corrosion resistance. Graphite heat exchangers, with their advantages of high heat exchange efficiency, strong corrosion resistance, compact structure, small footprint, and ease of installation and maintenance, are widely used in the domestic market.

[0003] The circular block perforated graphite heat exchanger is a type of graphite heat exchanger. It consists of several impregnated graphite heat exchange blocks with annular cross-sections. The heat exchange blocks are sealed with PTFE (polytetrafluoroethylene) sealing rings and housed within a steel cylindrical shell. Each graphite heat exchange block has numerous circular perforated flow channels parallel to and perpendicular to its axial axis, with the radial flow channels located at the midpoints of the intervals between the axial flow channels. One medium flows along the axial flow channels, while another medium flows through the radial flow channels, undergoing internal and external deflections.

[0004] The inner head and heat exchange blocks of the circular perforated graphite heat exchanger are made of graphite impregnated with phenolic resin, which has high thermal conductivity. Except for strong oxidizing media such as nitric acid, concentrated sulfuric acid, chromic acid, hypochlorous acid, strong alkalis, and strong oxidizing salt solutions, it is suitable for heat exchange of various inorganic acids, organic acids, salt solutions, weak alkalis, and solvents. It exhibits excellent corrosion resistance.

[0005] The circular block perforated graphite heat exchanger is currently one of the most advanced and highest-performing graphite heat exchangers available. The cylindrical body of the circular block perforated graphite heat exchanger can be fitted with lug supports for suspended installation; simultaneously, the carbon steel outer shell can be designed as a multi-section short cylindrical structure, greatly facilitating installation and maintenance for users. It features high overall structural strength, resistance to scaling on the heat transfer surface, strong temperature and pressure resistance, excellent corrosion resistance, good impact resistance, and high heat transfer efficiency.

[0006] During the use of circular block perforated graphite heat exchangers, it is necessary to periodically test their heat exchange performance over time. Currently, it is inconvenient to test the heat exchange performance of circular block perforated graphite heat exchangers, and it often relies on the daily experience of operators to determine the performance, which has certain shortcomings and needs to be improved. Summary of the Invention

[0007] This invention provides a device for detecting the heat exchange effect of a circular block perforated graphite heat exchanger, which solves the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A device for testing the heat exchange effect of a circular block perforated graphite heat exchanger includes a heat exchanger body, an external mounting assembly connected to the outer side of the heat exchanger body, and a testing assembly connected to the external mounting assembly.

[0010] The detection assembly includes two liquid storage tanks, with a first water inlet pipe and a second water inlet pipe fixedly connected to both ends of the liquid storage tanks respectively. The two sets of first water inlet pipes are respectively connected to the input ends of the hot flow pipe and the cold flow pipe of the heat exchanger, and the two sets of second water inlet pipes are respectively connected to the output ends of the hot flow pipe and the cold flow pipe of the heat exchanger.

[0011] A reaction chamber is provided on one side of the storage tank. Two input pipes are fixedly connected between the reaction chamber and the two storage tanks. An inner sealing seat is fixedly connected in the middle of the reaction chamber. Hot flow chamber and cold flow chamber are respectively provided on both sides of the inner sealing seat. The hot flow chamber and cold flow chamber are respectively connected to the two input pipes. A temperature difference sensor is fixedly installed inside the inner sealing seat. The cold electrode and hot electrode of the temperature difference sensor are fixedly connected to heat-conducting plates. The two heat-conducting plates are respectively placed in the hot flow chamber and cold flow chamber. An observation tube is fixedly installed on one side of the reaction tank. Multiple LEDs are installed in the observation tube. The multiple LEDs are electrically connected to the temperature difference sensor.

[0012] As a preferred embodiment of the present invention, the external mounting assembly includes two end plates, a support plate is fixedly provided between the two end plates, the liquid storage tank and the reaction tank are both fixedly provided on the support plate, and a fixing rod is also fixedly provided at the top and bottom ends between the two end plates. Fixed side plates are provided on both sides of the heat exchanger body, the fixing rod passes through the two fixed side plates and is fixedly connected to them, and a clamping screw is threaded through and connected to the end of the fixed side plate away from the fixing rod, and a clamping block is rotatably connected to the end of the clamping screw near the heat exchanger body.

[0013] As a preferred embodiment of the present invention, a handwheel is fixedly connected to the end of the clamping screw away from the clamping block.

[0014] As a preferred embodiment of the present invention, flanges are fixedly connected to both ends of the heat exchanger body, and connecting sleeves are provided at the connection points between the flanges and the first water inlet pipe and the second water inlet pipe.

[0015] As a preferred embodiment of the present invention, a discharge box is also fixedly provided on the support plate, and an output pipe is fixedly connected between the discharge box and the reaction box. A manifold cavity is opened in the upper part of the inner sealing seat, and a return channel is provided on both sides of the manifold cavity. The two return channels are respectively connected to the hot flow cavity and the cold flow cavity. A one-way flow guide assembly connected to the return channel is fixedly provided on both sides of the inner sealing seat.

[0016] As a preferred embodiment of the present invention, the unidirectional flow guide assembly includes a flow guide jacket fixedly disposed on the outside of the inner closed seat, a middle section flow guide chamber is provided in the middle of the flow guide jacket, a flow guide output chamber is provided at one end of the middle section flow guide chamber near the return liquid channel, a flow guide input chamber is provided at the other end of the middle section flow guide chamber, a movable ball is provided in the middle section flow guide chamber, and multiple ribs are fixedly provided on the inner wall of the flow guide output chamber.

[0017] As a preferred embodiment of the present invention, the rib plate is fixedly connected to a fixing frame, the fixing frame is fixedly connected to a guide rod, and the guide rod passes through the movable ball and is slidably connected to it.

[0018] The present invention has the following advantages: By setting up a detection component, the present invention can guide the flow of cold and hot flow in the heat exchanger and detect the heat exchange efficiency. The detection results are obvious and can be used repeatedly for a long time. By setting up an external installation component, it can realize quick installation and disassembly on the graphite heat exchanger, which facilitates rapid testing of different graphite heat exchangers. It is practical, convenient and effective. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front three-dimensional structure of the heat exchange effect testing device for a circular block perforated graphite heat exchanger.

[0020] Figure 2 This is a schematic diagram of the rear three-dimensional structure of the heat exchange effect testing device for a circular block perforated graphite heat exchanger.

[0021] Figure 3 This is a schematic diagram of the internal structure of the reaction chamber in the heat exchange effect testing device for a circular block perforated graphite heat exchanger.

[0022] Figure 4 This is a schematic diagram of the unidirectional flow guide component in the heat exchange effect testing device for a circular block perforated graphite heat exchanger.

[0023] In the diagram: 1. Heat exchanger body; 2. Flange; 3. End plate; 4. Bearing plate; 5. Fixing rod; 6. Fixing side plate; 7. Clamping screw; 8. Clamping block; 9. Handwheel; 10. Liquid storage tank; 11. First water inlet pipe; 12. Connecting sleeve; 13. Second water inlet pipe; 14. Reaction chamber; 15. Input pipe; 16. Observation pipe; 17. Output pipe; 18. Discharge box; 19. Inner sealing seat; 20. Thermoelectric generator; 21. Heat-conducting plate; 22. Manifold; 23. Return liquid channel; 24. One-way flow guide assembly; 25. Flow guide jacket; 26. Middle section flow guide chamber; 27. Flow guide input chamber; 28. Flow guide output chamber; 29. ​​Rib plate; 30. Fixing frame; 31. Movable ball; 32. Guide rod. Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0026] Please see Figure 1-4 A device for testing the heat exchange effect of a circular block-type graphite heat exchanger includes a heat exchanger body 1, an external mounting assembly connected to the outside of the heat exchanger body 1, and a testing assembly connected to the external mounting assembly.

[0027] The detection assembly includes two liquid storage tanks 10. The two ends of the liquid storage tanks 10 are respectively fixedly connected to a first water inlet pipe 11 and a second water inlet pipe 13. The two sets of first water inlet pipes 11 are respectively connected to the input ends of the hot flow pipe and the cold flow pipe of the heat exchanger, and the two sets of second water inlet pipes 13 are respectively connected to the output ends of the hot flow pipe and the cold flow pipe of the heat exchanger.

[0028] A reaction chamber 14 is provided on one side of the liquid storage tank 10. Two input pipes 15 are fixedly connected between the reaction chamber 14 and the two liquid storage tanks 10. An inner sealing seat 19 is fixedly connected in the middle of the reaction chamber 14. A hot flow chamber and a cold flow chamber are respectively provided on both sides of the inner sealing seat 19. The hot flow chamber and the cold flow chamber are respectively connected to the two input pipes 15. A temperature difference sensor is fixedly provided inside the inner sealing seat 19. The cold electrode and the hot electrode of the temperature difference sensor are both fixedly connected to heat-conducting plates 21. The two heat-conducting plates 21 are respectively placed in the hot flow chamber and the cold flow chamber. An observation tube 16 is fixedly provided on one side of the reaction chamber 14. Multiple LEDs are provided in the observation tube 16. The multiple LEDs are electrically connected to the temperature difference sensor.

[0029] The amount of current required to light up each of the multiple LEDs is different.

[0030] The external mounting assembly includes two end plates 3, with a support plate 4 fixed between the two end plates 3. The liquid storage tank 10 and the reaction tank 14 are both fixedly mounted on the support plate 4. Fixing rods 5 are also fixed at the top and bottom ends between the two end plates 3. Fixing side plates 6 are provided on both sides of the heat exchanger body 1. The fixing rods 5 pass through the two fixing side plates 6 and are fixedly connected to them. A clamping screw 7 is threaded through and connected to the end of the fixing side plate 6 away from the fixing rod 5. A clamping block 8 is rotatably connected to the end of the clamping screw 7 near the heat exchanger body 1.

[0031] A handwheel 9 is fixedly connected to the end of the clamping screw 7 away from the clamping block 8.

[0032] Both ends of the heat exchanger body 1 are fixedly connected to flanges 2, and connecting sleeves 12 are provided at the connection points between flanges 2 and the first water inlet pipe 11 and the second water inlet pipe 13.

[0033] The support plate 4 is also fixedly provided with a discharge box 18. The discharge box 18 is fixedly connected to the reaction box 14 with an output pipe 17. The upper part of the inner sealing seat 19 is provided with a manifold 22. Both sides of the manifold 22 are provided with return channels. The two return channels are respectively connected to the hot flow chamber and the cold flow chamber. Both sides of the inner sealing seat 19 are fixedly provided with unidirectional flow guide components 24 connected to the return channels.

[0034] The unidirectional flow guide assembly 24 includes a flow guide jacket 25 fixedly disposed on the outside of the inner sealing seat 19. A middle section flow guide chamber 26 is provided in the middle of the flow guide jacket 25. A flow guide output chamber 28 is provided at one end of the middle section flow guide chamber 26 near the return liquid channel 23. A flow guide input chamber 27 is provided at the other end of the middle section flow guide chamber 26. A movable ball 31 is provided inside the middle section flow guide chamber 26. A plurality of ribs 29 are fixedly provided on the inner wall of the flow guide output chamber 28.

[0035] The rib plate 29 is fixedly connected to a fixing frame 30, and the fixing frame 30 is fixedly connected to a guide rod 32. The guide rod 32 passes through the movable ball 31 and is slidably connected to it.

[0036] In the implementation of this invention, hot and cold fluids enter two storage tanks 10 through the first water inlet pipe 11 and the second water inlet pipe 13, respectively, and then enter the hot flow chamber and the cold flow chamber through two input pipes 15, respectively. The heat conduction of the hot and cold fluids through the two heat-conducting plates 21 creates a temperature difference between the two poles of the thermoelectric generator 20, which generates electricity. The power output of the thermoelectric generator 20 varies according to the size of the temperature difference, which is reflected in the LEDs in the observation tube 16. When the output current of the thermoelectric generator 20 increases, the number of LEDs lit also increases. If the output current of the thermoelectric generator 20 decreases, the number of LEDs lit also decreases. The heat exchange effect can be observed based on the number of LEDs lit.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting the heat exchange effect of a circular block perforated graphite heat exchanger, comprising a heat exchanger body (1), characterized in that, The heat exchanger body (1) is connected to an external mounting assembly on its outer side, and the external mounting assembly is connected to a detection assembly. The detection component includes two liquid storage tanks (10), and the two ends of the liquid storage tanks (10) are respectively fixedly connected to a first water inlet pipe (11) and a second water inlet pipe (13). The two sets of first water inlet pipes (11) are respectively connected to the input ends of the hot flow pipe and the cold flow pipe of the heat exchanger, and the two sets of second water inlet pipes (13) are respectively connected to the output ends of the hot flow pipe and the cold flow pipe of the heat exchanger. A reaction chamber (14) is provided on one side of the liquid storage tank (10). Two input pipes (15) are fixedly connected between the reaction chamber (14) and the two liquid storage tanks (10). An inner sealing seat (19) is fixedly connected in the middle of the reaction chamber (14). A hot flow chamber and a cold flow chamber are provided on both sides of the inner sealing seat (19). The hot flow chamber and the cold flow chamber are respectively connected to the two input pipes (15). A temperature difference sensor is fixedly provided inside the inner sealing seat (19). A heat conduction plate (21) is fixedly connected to both the cold and hot electrodes of the temperature difference sensor. The two heat conduction plates (21) are respectively placed in the hot flow chamber and the cold flow chamber. An observation tube (16) is fixedly provided on one side of the reaction chamber (14). Multiple LED beads are provided inside the observation tube (16). The multiple LED beads are electrically connected to the temperature difference sensor.

2. The heat exchange effect testing device for a circular block perforated graphite heat exchanger according to claim 1, characterized in that, The external mounting assembly includes two end plates (3), a support plate (4) is fixed between the two end plates (3), the liquid storage tank (10) and the reaction box (14) are both fixed on the support plate (4), and a fixing rod (5) is fixed at the top and bottom of the two end plates (3). Fixed side plates (6) are provided on both sides of the heat exchanger body (1). The fixing rod (5) passes through the two fixed side plates (6) and is fixedly connected to them. A clamping screw (7) is threaded through and connected to the end of the fixed side plate (6) away from the fixing rod (5). A clamping block (8) is rotatably connected to the end of the clamping screw (7) near the heat exchanger body (1).

3. The heat exchange effect testing device for a circular block perforated graphite heat exchanger according to claim 2, characterized in that, A handwheel (9) is fixedly connected to the end of the clamping screw (7) away from the clamping block (8).

4. The heat exchange effect testing device for a circular block perforated graphite heat exchanger according to claim 1, characterized in that, Both ends of the heat exchanger body (1) are fixedly connected with flanges (2), and the flanges (2) are provided with connecting sleeves (12) at the connection points with the first water inlet pipe (11) and the second water inlet pipe (13).

5. The heat exchange effect testing device for a circular block perforated graphite heat exchanger according to claim 1, characterized in that, A discharge box (18) is also fixedly provided on the support plate (4). An output pipe (17) is fixedly connected between the discharge box (18) and the reaction box (14). A manifold (22) is opened in the upper part of the inner sealing seat (19). A return channel is provided on both sides of the manifold (22). The two return channels are connected to the hot flow chamber and the cold flow chamber respectively. A one-way flow guide assembly (24) connected to the return channel is fixedly provided on both sides of the inner sealing seat (19).

6. The heat exchange effect testing device for a circular block perforated graphite heat exchanger according to claim 5, characterized in that, The unidirectional flow guide assembly (24) includes a flow guide jacket (25) fixedly disposed on the outside of the inner closed seat (19). A middle flow guide chamber (26) is provided in the middle of the flow guide jacket (25). A flow guide output chamber (28) is provided at one end of the middle flow guide chamber (26) near the return liquid channel (23). A flow guide input chamber (27) is provided at the other end of the middle flow guide chamber (26). A movable ball (31) is provided inside the middle flow guide chamber (26). A plurality of ribs (29) are fixedly provided on the inner wall of the flow guide output chamber (28).

7. The heat exchange effect testing device for a circular block perforated graphite heat exchanger according to claim 6, characterized in that, The rib (29) is fixedly connected to a fixing frame (30), the fixing frame (30) is fixedly connected to a guide rod (32), the guide rod (32) passes through the movable ball (31) and is slidably connected to it.

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