A heat exchanger and a method for detecting water leakage

Abstract

The present invention discloses a heat exchanger and a water leakage detection method, which belongs to the field of heat exchangers and includes: a frame, wherein the frame is provided with a plurality of perforations on the front and rear sides thereof; a plurality of heat exchange tubes, a connecting structure including a connecting plate, a connecting hole for inserting the ends of the heat exchange tubes on the connecting plate, a connecting channel between the corresponding connecting holes, an inner sealing ring and an outer sealing ring fixed to the inner wall of the connecting hole, the inner walls of the inner sealing ring and the outer sealing ring both abutting against the outer wall of the heat exchange tube, a sealed cavity formed between the inner sealing ring and the outer sealing ring, a water outlet channel corresponding to the sealed cavity is provided in the connecting plate, one end of the water outlet channel is connected to the sealed cavity, and the other end passes through the left side of the connecting plate; a water outlet detection device, the water outlet detection device is used to detect whether water is flowing out of each water outlet channel. The water outlet detection device can detect which water outlet channel is flowing out, thereby knowing which connecting hole's inner sealing ring needs to be replaced, and the corresponding inner sealing ring can be replaced individually, with low replacement cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchange, and in particular relates to a heat exchanger and a water leakage detection method. Background Art

[0002] A gas water heater uses gas as fuel, heating it through combustion and transferring heat to cold water flowing through a heat exchanger to produce hot water. Currently, the heat exchanger used in a gas water heater primarily consists of a frame, multiple finned heat exchange tubes mounted within the frame, a mounting plate for securing the tubes to the frame, and a connecting structure external to the frame that connects the tube ends. This connecting structure creates a continuous flow path for all the tubes.

[0003] Patent publication number CN118242910B discloses a heat exchanger and installation process. The invention discloses a heat exchanger and installation process, comprising: a frame having a plurality of perforations; a plurality of heat exchange tubes passing through corresponding perforations; two connecting structures, disposed on the front and rear sides of the frame, respectively. The connecting structures comprise an inner connecting plate and an outer connecting plate, the inner connecting plate having an inner perforation, the inner wall of the inner perforation having a first inner ring groove and a second inner ring groove, each of which has a first sealing member and a second sealing member installed therein, respectively; an inner water connection groove within the inner connecting plate, an outer main groove within the outer connecting plate, a plurality of connecting cavities on the bottom surface of the outer main groove, each of which has an outer sealing ring groove on the outside, an outer sealing ring installed therein, the outer sealing ring abutting the inner connecting plate; and a water leakage detection device for detecting the presence of water, thereby promptly detecting water leakage at the connection between the heat exchange tube, the mounting plate, and the connecting structure.

[0004] However, if the first seal on the inner connecting plate leaks, it is not clear which first seal is leaking, and the first seals on the entire inner connecting plate must be replaced, which is relatively costly and time-consuming. Summary of the Invention

[0005] The object of the present invention is to provide a heat exchanger and a water leakage detection method, which can clearly identify the inner sealing ring that needs to be replaced and reduce the replacement cost.

[0006] To achieve the above object, the present invention provides the following technical solution: a heat exchanger comprising:

[0007] A frame, wherein the front and rear sides of the frame are provided with a plurality of through holes;

[0008] a plurality of heat exchange tubes, each of the heat exchange tubes passing through corresponding perforations;

[0009] Two communication structures, the two communication structures are respectively arranged on the front and rear sides of the frame body, the communication structure includes a communication plate, the communication plate is provided with a communication hole for the end of the heat exchange tube to be inserted, a communication channel is provided between the corresponding communication holes, an inner sealing ring and an outer sealing ring are fixed to the inner wall of the communication hole, the inner walls of the inner sealing ring and the outer sealing ring are both in contact with the outer wall of the heat exchange tube, a sealed cavity is formed between the inner sealing ring and the outer sealing ring, a water outlet channel corresponding to the sealed cavity is provided in the communication plate, one end of the water outlet channel is connected to the sealed cavity, and the other end passes through the left side of the communication plate;

[0010] A water outlet detection device is used to detect whether water is flowing out of each water outlet channel.

[0011] Preferably, the water outlet detection device includes:

[0012] A detection rod body, the detection rod body is set to a transparent material, the detection rod body is set on the left side of the connecting plate, the detection rod body is provided with a detection channel corresponding to the water outlet channel, the detection channel is horizontally arranged, the lower side of the detection channel is provided with a detection groove, the detection channel is connected to the corresponding water outlet channel, and a detection vertical channel is further provided in the detection rod body, the detection channel is connected to the detection vertical channel at one end away from the water outlet channel, and the lower end of the detection vertical channel passes through the detection rod body;

[0013] A sensing rod body, the sensing rod body is arranged below the detection rod body, and a sensing groove with an upward opening is provided in the sensing rod body;

[0014] A sensing float, the sensing float being installed in the sensing tank;

[0015] The sensor is fixed on the outer wall of the sensing rod.

[0016] Preferably, a limiting groove is provided on the left side of the connecting plate, a telescopic device is provided on the outer wall of the frame, the detection rod is installed on the telescopic device, and the telescopic device is used to drive the detection rod to be plugged into or leave the limiting groove.

[0017] Preferably, the telescopic device comprises:

[0018] A telescopic seat, the telescopic seat being fixed on the outer wall of the frame, a telescopic slide being provided in the telescopic seat, and a telescopic side groove being connected to the telescopic slide being provided on the side wall of the telescopic seat;

[0019] a telescopic screw, the telescopic screw being rotatably connected in the telescopic slide;

[0020] A telescopic slider is provided with a telescopic threaded hole, the telescopic slider is installed in the telescopic slide groove, the telescopic screw is threadedly connected to the telescopic threaded hole, a telescopic connecting rod extending out of the telescopic side groove is fixed on the telescopic slider, and the telescopic connecting rod is fixedly connected to the detection rod body.

[0021] Preferably, an induction connecting plate is fixed on the outer wall of the frame, the induction connecting plate is arranged below the detection rod body, an induction connecting plate is provided with an induction communicating groove, the sensing rod body is fixed on the lower side of the induction connecting plate, and the induction communicating groove connects the sensing groove with the detection vertical channel.

[0022] Preferably, a drain threaded hole is provided at the bottom of the sensing tank, and a drain bolt is threadedly connected to the drain threaded hole.

[0023] Preferably, the detection rod body includes a detection outer rod body and a detection inner rod body, the detection vertical channel is arranged in the detection outer rod body, the upper and lower ends of the detection vertical channel pass through the detection rod body, the detection inner rod body is installed in the detection vertical channel, the upper end of the detection outer rod body is fixed with a lateral adjustment device, the upper end of the detection inner rod body is connected to the lateral adjustment device, the detection channel includes a detection fixed channel and a detection movable channel, the detection fixed channel is arranged in the detection outer rod body, the detection movable channel is arranged in the detection inner rod body, and the detection groove passes through one end of the detection fixed channel close to the detection movable channel.

[0024] Preferably, a first mark corresponding to the detection channel is provided on the outer wall of the detection rod body, and a second mark corresponding to the first mark is provided on the connecting plate, and the second mark is marked on the outside of the connecting hole connected to the corresponding detection channel.

[0025] Preferably, a right fixed block is fixed on the right side of the frame, a right insertion rod is fixed on the right fixed block, a right connecting block is fixed on the right side of the connecting plate, a right connecting block is provided with a right connecting groove, and the right insertion rod is plugged into the right connecting groove.

[0026] A water leakage detection method is also disclosed, which is based on the above-mentioned heat exchanger and includes the following steps:

[0027] When water leaks, water will flow from the gap between the inner sealing ring and the heat exchange tube to the sensing tank, the sensing float will float up, and the sensor will send out a water leak signal;

[0028] Observe which detection groove has water remaining on it, so as to know whether the inner sealing ring in the corresponding connecting hole needs to be replaced;

[0029] After the telescopic device drives the detection rod to leave the limiting groove, remove the connecting plate and replace the corresponding inner sealing ring;

[0030] Turn the transverse limit bolt to release the restriction on the detection inner rod body, move the detection inner rod body away from the detection groove, and the water in the detection groove flows out of the detection groove;

[0031] Unscrew the drain bolt to drain the water.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) When the inner sealing ring ages, water will flow from the gap between the inner sealing ring and the heat exchange tube to the sealing cavity, and then flow out from the sealing cavity and the water outlet channel. The water outlet detection device can detect which water outlet channel is discharging water, so as to know which connecting hole's inner sealing ring needs to be replaced. The corresponding inner sealing ring can be replaced separately, and the replacement cost is low.

[0034] (2) When water leaks, water will flow from the gap between the inner sealing ring and the heat exchange tube to the sealed cavity, and then flow out from the sealed cavity and the water outlet channel. Then the water will pass through the detection channel. During the process of passing, the water will overflow the detection groove and flow into the detection vertical channel. Then, it will enter the sensing tank. The sensing float of the sensing tank will float up. At this time, the sensor can sense the floating float, and the sensor will send a water leakage signal. The main control system will send an alarm signal, and the heat exchanger will stop running.

[0035] (3) Since the detection rod is made of transparent material, it is possible to see whether there is water in the detection groove. If there is water in the detection groove, it indicates that the sealing cavity connected to the detection groove is leaking, so that it can be known that the inner sealing ring in the sealing cavity is leaking and needs to be replaced in time. A detection rod and a sensing rod can be used together to know which inner sealing ring is leaking. The structure is very simple.

[0036] (4) When the telescopic device drives the detection rod to be plugged into the limiting groove, the position of the connecting plate can be limited, thereby preventing the connecting plate from moving. At this time, the water outlet channel is connected to the corresponding detection channel, and the detection rod can play a role of limiting and detecting at the same time;

[0037] (5) When the water in the induction tank needs to be drained, just unscrew the drain bolt to drain it, which is very convenient;

[0038] (6) When the water in the detection groove needs to be drained, it is only necessary to move the detection inner rod body. After the detection inner rod body moves away from the detection groove, the water in the detection groove can flow out of the detection groove. The water enters the sensing tank from the lower end of the detection vertical channel and finally flows out from the water drain thread hole. The drainage is very convenient and can be observed next time after drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1Schematic diagram of the structure of the heat exchanger of the present invention;

[0040] Figure 2 for Figure 1 A partial enlarged view of point I in the middle;

[0041] Figure 3 It is a cross-sectional view of the connection between the connecting plate and the heat exchange tube;

[0042] Figure 4 for Figure 1 Left view of;

[0043] Figure 5 for Figure 4 Cross-section at AA;

[0044] Figure 6 for Figure 5 A partial enlarged view of position II in the middle;

[0045] Figure 7 for Figure 5 A partial enlarged view of point III in the middle;

[0046] Figure 8 is a structural diagram of the connecting plate;

[0047] Figure 9 for Figure 1 Schematic diagram of part of the structure when the connecting plate is removed;

[0048] Figure 10 Schematic diagram of the structure of the detection rod;

[0049] Figure 11 A schematic structural diagram of another embodiment of the detection rod body;

[0050] Figure 12 for Figure 11 sectional view of

[0051] Figure 13 for Figure 12 A partial enlarged view of position IV in the middle;

[0052] Figure 14 for Figure 12 A partial enlarged view of the middle V;

[0053] Figure 15 A cross-sectional view of the connecting plate.

[0054] In the figure: 1. frame; 2. perforation; 3. heat exchange tube; 4. connecting plate; 5. connecting hole; 6. connecting channel; 7. inner sealing ring; 8. outer sealing ring; 9. sealing cavity; 10. water outlet channel; 11. detection rod; 12. detection channel; 13. detection groove; 14. detection vertical channel; 15. sensing rod; 16. sensing groove; 17. sensing float; 18. sensor; 19. limiting groove; 20. telescopic seat; 21. telescopic slide; 22. telescopic screw; 23. telescopic slider; 24. telescopic threaded hole; 25. telescopic connecting rod; 26. sensing connecting plate ; 27. Induction connecting groove; 28. Drain threaded hole; 29. Drain bolt; 30. Detection of outer rod body; 31. Detection of inner rod body; 32. Detection of fixed channel; 33. Detection of movable channel; 34. First mark; 35. Second mark; 36. Right fixed block; 37. Right plug rod; 38. Right connecting block; 39. Right connecting groove; 40. First horizontal fixing block; 41. Second horizontal fixing block; 42. Horizontal fixing rod; 43. Horizontal sliding groove; 44. Horizontal limit bolt; 45. Horizontal threaded hole; 46. Telescopic side groove; 47. Inner limit ring groove; 48. Outer limit ring groove. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] See also Figures 1-15 The present invention provides a technical solution for a heat exchanger and a water leakage detection method.

[0057] A heat exchanger comprising:

[0058] A frame 1, with a plurality of through holes 2 provided on the front and rear opposite sides of the frame 1;

[0059] A plurality of heat exchange tubes 3, each heat exchange tube 3 passing through the corresponding perforations 2;

[0060] Two communicating structures, which are respectively arranged on the front and rear sides of the frame 1. The communicating structure makes all the heat exchange tubes 3 form a continuous flow channel. The communicating structure includes a communicating plate 4. The communicating plate 4 is provided with a communicating hole 5 for inserting the end of the heat exchange tube 3. A communicating channel 6 is provided between the corresponding communicating holes 5. The communicating channel 6 connects the corresponding heat exchange tubes 3. The inner wall of the communicating hole 5 is fixed with an inner sealing ring 7 and an outer sealing ring 8. The inner walls of the inner sealing ring 7 and the outer sealing ring 8 are both in contact with the outer wall of the heat exchange tube 3. The inner sealing ring 7 is arranged on the side away from the frame 1. A sealed cavity 9 is formed between the inner sealing ring 7 and the outer sealing ring 8. A water outlet channel 10 corresponding to the sealed cavity 9 is provided in the communicating plate 4. One end of the water outlet channel 10 is connected with the sealed cavity 9, and the other end passes through the left side of the communicating plate 4;

[0061] The water outlet detection device is used to detect whether water is flowing out of each water outlet channel 10.

[0062] Because the inner walls of the inner sealing ring 7 and the outer sealing ring 8 are in contact with the outer walls of the heat exchange tube 3, water can be prevented from flowing out of the gap between the heat exchange tube 3 and the connecting hole 5. However, over time, the inner sealing ring 7 will age, and water will flow from the gap between the inner sealing ring 7 and the heat exchange tube 3 into the sealing cavity 9, and then out of the sealing cavity 9 and the water outlet channel 10. The water outlet detection device can detect which water outlet channel 10 is discharging water, thereby knowing which connecting hole 5's inner sealing ring 7 needs to be replaced. The corresponding inner sealing ring 7 can be replaced separately, which reduces the replacement cost.

[0063] like Figure 6 and Figure 7 As shown, the water outlet detection device includes:

[0064] A detection rod body 11 is provided, which is made of a transparent material. The detection rod body 11 is provided on the left side of the connecting plate 4. A detection channel 12 corresponding to the water outlet channel 10 is provided on the detection rod body 11. The detection channel 12 is horizontally arranged. A detection groove 13 is provided on the lower side of the detection channel 12. The detection channel 12 is connected to the corresponding water outlet channel 10. A detection vertical channel 14 is further provided in the detection rod body 11. The end of the detection channel 12 away from the water outlet channel 10 is connected to the detection vertical channel 14. The lower end of the detection vertical channel 14 passes through the detection rod body 11;

[0065] The sensing rod 15 is provided below the detection rod 11 and has a sensing slot 16 with an upward opening.

[0066] The induction float 17 is installed in the induction tank 16;

[0067] The sensor 18 is fixed on the outer wall of the sensing rod 15 .

[0068] When water leaks, water will flow from the gap between the inner sealing ring 7 and the heat exchange tube 3 to the sealed cavity 9, then pass through the sealed cavity 9 and the water outlet channel 10, and then the water will pass through the detection channel 12. During the process, the water will overflow the detection groove 13 and flow into the detection vertical channel 14, and then enter the sensing groove 16. The sensing float 17 of the sensing groove 16 will float up. At this time, the sensor 18 can sense the floating of the sensing float 17, and the sensor 18 will send a water leakage signal. The main control system will send an alarm signal, the heat exchanger will stop running, and the user will be reminded to repair it in time.

[0069] Since the detection rod 11 is made of transparent material, it is possible to see whether there is water in the detection groove 13. If there is water in the detection groove 13, it indicates that the sealing cavity 9 connected to the detection groove 13 is leaking, so that it can be known that the inner sealing ring 7 in the sealing cavity 9 is leaking and needs to be replaced in time. With the cooperation of a detection rod 11 and a sensing rod 15, it is possible to determine which inner sealing ring 7 is leaking, and the structure is very simple.

[0070] like Figure 2-Figure 7 As shown, a limiting groove 19 is provided on the left side of the connecting plate 4, and a telescopic device is provided on the outer wall of the frame 1. The detection rod 11 is installed on the telescopic device, which is used to drive the detection rod 11 to be inserted into or leave the limiting groove 19.

[0071] When the telescopic device drives the detection rod 11 to engage with the limiting groove 19, the position of the connecting plate 4 can be restricted, thereby preventing the connecting plate 4 from moving. At this time, the water outlet channel 10 is connected to the corresponding detection channel 12, and the detection rod 11 can both limit and detect the connection. When it is necessary to remove the connecting plate 4, the telescopic device drives the detection rod 11 out of the limiting groove 19, and the connecting plate 4 can be removed.

[0072] like Figure 6 As shown, the telescopic device includes:

[0073] The telescopic seat 20 is fixed on the outer wall of the frame 1. A telescopic slide 21 is provided in the telescopic seat 20. A telescopic side groove 46 communicating with the telescopic slide 21 is provided on the side wall of the telescopic seat 20.

[0074] The telescopic screw 22 is rotatably connected to the telescopic slide 21;

[0075] The telescopic slider 23 is provided with a telescopic threaded hole 24. The telescopic slider 23 is installed in the telescopic slide groove 21. The telescopic screw 22 is threadedly connected to the telescopic threaded hole 24. A telescopic connecting rod 25 extending from the telescopic side groove 46 is fixed on the telescopic slider 23. The telescopic connecting rod 25 is fixedly connected to the detection rod body 11.

[0076] By rotating the telescopic screw 22, the telescopic slider 23 can be driven to move in the telescopic slide groove 21. The telescopic slider 23 drives the detection rod body 11 to move through the telescopic connecting rod 25, thereby realizing the detection rod body 11 being inserted into or leaving the limiting groove 19.

[0077] like Figure 7 As shown, an inductive connecting plate 26 is fixed on the outer wall of the frame 1, and the inductive connecting plate 26 is arranged below the detection rod body 11. An inductive connecting plate 26 is provided with an inductive connecting groove 27. The sensing rod body 15 is fixed on the lower side of the inductive connecting plate 26, and the inductive connecting groove 27 connects the sensing groove 16 with the detection vertical channel 14.

[0078] The sensing rod 15 is fixed to the frame 1 through the sensing connecting plate 26 . The lower side of the detection rod 11 is in contact with the upper side of the sensing connecting plate 26 . The sensing connecting plate 26 does not affect the movement of the detection rod.

[0079] like Figure 7 As shown, the bottom of the sensing tank 16 is provided with a drain threaded hole 28, and a drain bolt 29 is connected to the inner thread of the drain threaded hole 28. When the water in the sensing tank 16 needs to be drained, the drain bolt 29 can be unscrewed to release it. Replacing the inner sealing ring only requires removing the connecting plate, which is very convenient.

[0080] like Figure 11-14 As shown, the following is another way of detecting the rod body 11. In order to facilitate the discharge of water in the detection groove 13, the detection rod body 11 includes an outer detection rod body 30 and an inner detection rod body 31. The detection vertical channel 14 is arranged in the outer detection rod body 30. The upper and lower ends of the detection vertical channel 14 pass through the outer detection rod body 30. The detection inner rod body 31 is installed in the detection vertical channel 14. The upper end of the outer detection rod body 30 is fixed with a lateral adjustment device. The upper end of the inner detection rod body 31 is connected to the lateral adjustment device. The lateral adjustment device can drive the inner detection rod body 31 to move laterally. The detection channel 12 includes a fixed detection channel 32 and a movable detection channel 33. The fixed detection channel 32 is arranged in the outer detection rod body 30, and the movable detection channel 33 is arranged in the inner detection rod body 31. The detection groove 13 is located on the lower side of the fixed detection channel 32, and the detection groove 13 passes through the fixed detection channel 32 close to the end of the movable detection channel 33.

[0081] When it is not necessary to drain the water, the inner rod 31 is detected to be in the Figure 14In the middle position, water enters the detection groove 13 through the detection fixed channel 32, and then enters the detection vertical channel 14 through the detection movable channel 33. Water leakage can be confirmed by observing whether there is water in the detection groove 13. When the water in the detection groove 13 needs to be drained, it is only necessary to move the detection inner rod 31. After the detection inner rod 31 moves away from the detection groove 13, the water in the detection groove 13 can flow out of the detection groove 13, enter the sensing groove 16 from the lower end of the detection vertical channel 14, and finally drain out from the water drain threaded hole 28. Draining is very convenient and can be observed next time after drainage.

[0082] like Figure 5 and Figure 9 As shown, a right fixed block 36 is fixed to the right side of the frame 1, and a right insertion rod 37 is fixed on the right fixed block 36. A right connecting block 38 is fixed to the right side of the connecting plate 4, and a right connecting groove 39 is provided on the right connecting block 38. The right insertion rod 37 is plugged into the right connecting groove 39, which can limit the left and right positions of the connecting plate 4.

[0083] like Figure 13 As shown, the lateral adjustment device includes:

[0084] A first transverse fixing block 40 is fixed to the upper side of the detection outer rod body 30;

[0085] A second transverse fixing block 41 is fixed to the upper side of the detection outer rod body 30;

[0086] A transverse fixing rod 42 is fixed between the first transverse fixing block 40 and the second transverse fixing block 41. A transverse sliding groove 43 is provided at the upper end of the inner rod body 31, and the transverse fixing rod 42 is plugged into the transverse sliding groove 43;

[0087] The transverse limiting bolt 44 and the first transverse fixing block 40 are provided with a transverse threaded hole 45 . The transverse limiting bolt 44 and the transverse threaded hole 45 , and the end of the transverse limiting bolt 44 abut against the side of the detection inner rod body 31 facing the first transverse fixing block 40 .

[0088] like Figure 13 and Figure 14As shown, due to the insertion of the transverse fixing rod 42 into the transverse sliding groove 43, the detection inner rod body 31 can move laterally relative to the transverse fixing rod 42. When it is necessary to connect the detection inner rod body 31 with the detection groove 13 close to the end of the detection vertical channel 14, it is only necessary to rotate the transverse limiting bolt 44. The end of the transverse limiting bolt 44 drives the detection inner rod body 31 to move toward the detection groove 13 until the detection inner rod body 31 abuts the right inner wall of the detection vertical channel 14. At this time, the transverse limiting bolt 44 limits the position of the detection inner rod body 31 to prevent it from moving. When it is necessary to move the detection inner rod body 31, it is only necessary to rotate the transverse limiting bolt 44 in the opposite direction. At this time, the transverse limiting bolt 44 releases the restriction on the detection inner rod body 31, and the detection inner rod body 31 can be moved to release water.

[0089] like Figure 1 、 Figure 6 and Figure 8 As shown, a first mark 34 corresponding to the detection channel 12 is provided on the outer wall of the detection rod body 11, and a second mark 35 corresponding to the first mark 34 is provided on the communication plate 4. The second mark 35 is marked on the outside of the communication hole 5 connected to the corresponding detection channel 12. For example, if the first mark 34 corresponding to the topmost detection channel 12 is 1, then the second mark 35 corresponding to the communication hole 5 connected to the topmost detection channel 12 is also 1. If water is observed in the detection groove 13 of the topmost detection channel 12, it is only necessary to replace the inner sealing ring 7 in the communication hole 5 corresponding to the second mark 35.

[0090] like Figure 3 As shown, the inner wall of the communicating hole 5 is provided with an inner limiting ring groove 47 and an outer limiting ring groove 48 , the outer end of the inner sealing ring 7 is plugged into the inner limiting ring groove 47 , and the outer end of the outer sealing ring 8 is plugged into the outer limiting ring groove 48 .

[0091] Because the outer sealing ring 8 acts as a water barrier, it generally does not need to be replaced, but can be replaced if necessary. Of course, the sensing rod 15 can also be made larger, and the sensing groove 16 can also be enlarged to accommodate more water. The sensing rod 15 can be secured to the telescopic connecting rod with bolts. When the sensing rod needs to be disassembled, the bolts can be removed.

[0092] like Figure 6 As shown, the communication port between the water outlet channel 10 and the sealed cavity 9 is located at the bottom of the sealed cavity 9. A section of the water outlet channel 10 below the sealed cavity 9 is vertically downward, and the other sections are arranged horizontally.

[0093] An elastic sealing layer is provided on one side where the detection rod body 11 is plugged into the limiting groove 19 , so that the sealing performance of the connection between the rod body 11 and the increased connecting plate 4 can be detected.

[0094] A water leakage detection method is also disclosed. The detection method is based on the above heat exchanger and includes the following steps:

[0095] When water leaks, water will flow from the gap between the inner sealing ring 7 and the heat exchange tube 3 to the sensing groove 16, the sensing float 17 will float up, and the sensor 18 will send out a water leakage signal;

[0096] Observe which detection groove 13 has water remaining on it, so as to know that the inner sealing ring 7 in the corresponding communicating hole 5 needs to be replaced;

[0097] After the telescopic device drives the detection rod 11 to leave the limiting groove 19, the connecting plate 4 is removed and the corresponding inner sealing ring 7 is replaced;

[0098] Turn the transverse limiting bolt to release the restriction on the detection inner rod 31, move the detection inner rod 31 away from the detection groove 13, and the water in the detection groove 13 flows out of the detection groove 13;

[0099] Unscrew the drain bolt 29 to drain the water.

[0100] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger, characterized in that: include: A frame, wherein the front and rear sides of the frame are provided with a plurality of through holes; a plurality of heat exchange tubes, each of the heat exchange tubes passing through corresponding perforations; Two communication structures, the two communication structures are respectively arranged on the front and rear sides of the frame body, the communication structure includes a communication plate, the communication plate is provided with a communication hole for the end of the heat exchange tube to be inserted, a communication channel is provided between the corresponding communication holes, an inner sealing ring and an outer sealing ring are fixed to the inner wall of the communication hole, the inner walls of the inner sealing ring and the outer sealing ring are both in contact with the outer wall of the heat exchange tube, a sealed cavity is formed between the inner sealing ring and the outer sealing ring, a water outlet channel corresponding to the sealed cavity is provided in the communication plate, one end of the water outlet channel is connected to the sealed cavity, and the other end passes through the left side of the communication plate; A water outlet detection device, which is used to detect whether water is flowing out of each water outlet channel; The water outlet detection device comprises: A detection rod body, the detection rod body is set to a transparent material, the detection rod body is set on the left side of the connecting plate, the detection rod body is provided with a detection channel corresponding to the water outlet channel, the detection channel is horizontally arranged, the lower side of the detection channel is provided with a detection groove, the detection channel is connected to the corresponding water outlet channel, and a detection vertical channel is further provided in the detection rod body, the detection channel is connected to the detection vertical channel at one end away from the water outlet channel, and the lower end of the detection vertical channel passes through the detection rod body; A sensing rod body, the sensing rod body is arranged below the detection rod body, and a sensing groove with an upward opening is provided in the sensing rod body; A sensing float, the sensing float being installed in the sensing tank; A sensor, wherein the sensor is fixed on the outer wall of the sensing rod; A limiting groove is provided on the left side of the connecting plate, and a telescopic device is provided on the outer wall of the frame body. The detection rod body is installed on the telescopic device, and the telescopic device is used to drive the detection rod body to be inserted into or leave the limiting groove; The detection rod body includes a detection outer rod body and a detection inner rod body, the detection vertical channel is arranged in the detection outer rod body, the upper and lower ends of the detection vertical channel pass through the detection outer rod body, the detection inner rod body is installed in the detection vertical channel, the upper end of the detection outer rod body is fixed with a lateral adjustment device, the upper end of the detection inner rod body is connected to the lateral adjustment device, the detection channel includes a detection fixed channel and a detection movable channel, the detection fixed channel is arranged in the detection outer rod body, the detection movable channel is arranged in the detection inner rod body, and the detection groove passes through the end of the detection fixed channel close to the detection movable channel; A first mark corresponding to the detection channel is provided on the outer wall of the detection rod body, and a second mark corresponding to the first mark is provided on the connecting plate. The second mark is marked on the outside of the connecting hole connected to the corresponding detection channel.

2. A heat exchanger according to claim 1, characterized in that: The telescopic device comprises: A telescopic seat, the telescopic seat being fixed on the outer wall of the frame, a telescopic slide being provided in the telescopic seat, and a telescopic side groove being connected to the telescopic slide being provided on the side wall of the telescopic seat; a telescopic screw, the telescopic screw being rotatably connected in the telescopic slide; A telescopic slider is provided with a telescopic threaded hole, the telescopic slider is installed in the telescopic slide groove, the telescopic screw is threadedly connected to the telescopic threaded hole, a telescopic connecting rod extending out of the telescopic side groove is fixed on the telescopic slider, and the telescopic connecting rod is fixedly connected to the detection rod body.

3. A heat exchanger according to claim 1, characterized in that: An induction connecting plate is fixed on the outer wall of the frame, and the induction connecting plate is arranged below the detection rod body. An induction connecting plate is provided with an induction communicating groove, and the sensing rod body is fixed on the lower side of the induction connecting plate. The induction communicating groove connects the induction groove with the detection vertical channel.

4. A heat exchanger according to claim 3, characterized in that: A water drain threaded hole is provided at the bottom of the sensing tank, and a water drain bolt is connected to the inner thread of the water drain threaded hole.

5. The heat exchanger according to claim 1, characterized in that: A right fixing block is fixed on the right side of the frame body, a right insertion rod is fixed on the right fixing block, a right connecting block is fixed on the right side of the connecting plate, a right connecting slot is provided on the right connecting block, and the right insertion rod is plugged into the right connecting slot.

6. A water leakage detection method, characterized in that: The heat exchanger according to any one of claims 1 to 5 comprises the following steps: When water leaks, water will flow from the gap between the inner sealing ring and the heat exchange tube to the sensing tank, the sensing float will float up, and the sensor will send out a water leak signal; Observe which detection groove has water remaining on it, so as to know whether the inner sealing ring in the corresponding connecting hole needs to be replaced; After the telescopic device drives the detection rod to leave the limiting groove, remove the connecting plate and replace the corresponding inner sealing ring; Turn the transverse limit bolt to release the restriction on the detection inner rod body, move the detection inner rod body away from the detection groove, and the water in the detection groove flows out of the detection groove; Unscrew the drain bolt to drain the water.

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