Heat exchanger and water leakage detection method

Abstract

The invention discloses a heat exchanger and a water leakage detection method, and belongs to the field of heat exchangers. The heat exchanger comprises a frame body, and a plurality of penetrating holes are formed in the front side and the rear side of the frame body; the communicating structure comprises a communicating plate, communicating holes allowing the ends of the heat exchange pipes to be inserted are formed in the communicating plate, communicating channels are formed between the corresponding communicating holes, inner sealing rings and outer sealing rings are fixed to the inner walls of the communicating holes, and the inner walls of the inner sealing rings and the inner walls of the outer sealing rings abut against the outer walls of the heat exchange pipes. Sealing cavities are formed between the inner sealing ring and the outer sealing ring, water outlet channels in one-to-one correspondence with the sealing cavities are formed in the communicating plate, one ends of the water outlet channels communicate with the sealing cavities, and the other ends of the water outlet channels penetrate through the left side of the communicating plate. And the water outlet detection device is used for detecting whether water flows out of each water outlet channel or not. The water outlet detection device can detect which water outlet channel discharges water, so that the inner sealing ring of which communication hole needs to be replaced is known, the corresponding inner sealing ring can be independently replaced, and the replacement cost is low.

Description

Technical Field

[0001] The 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 is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water. At present, the heat exchanger used in a gas water heater mainly includes a frame, a plurality of heat exchange tubes with fins arranged in the frame, a mounting plate for fixing the heat exchange tubes to the frame, and a connecting structure arranged outside the frame to connect the ends of the heat exchange tubes in pairs. The connecting structure enables all the heat exchange tubes to form a continuous flow channel.

[0003] The patent with the publication number of CN118242910B discloses a heat exchanger and an installation process. The present invention discloses a heat exchanger and an installation process, including: a frame, a plurality of through holes are provided on the frame; a plurality of heat exchange tubes, the heat exchange tubes pass through the corresponding through holes; two connecting structures, the two connecting structures are respectively arranged on the front and rear sides of the frame, the connecting structure includes an inner connecting plate and an outer connecting plate, the inner connecting plate is provided with an inner through hole, the inner wall of the inner through hole is provided with a first inner ring groove and a second inner ring groove, the first inner ring groove and the second inner ring groove are respectively installed with a first seal and a second seal, the inner connecting plate is provided with an inner water groove, the outer connecting plate is provided with an outer general groove, the bottom surface of the outer general groove is provided with a plurality of connecting cavities, the outer side of each connecting cavity is provided with an outer sealing ring groove, an outer sealing ring is installed in the outer sealing ring groove, and the outer sealing ring abuts against the inner connecting plate; a water leakage detection device, the water leakage detection device is used to detect whether there is water. It can timely detect water leakage at the connection between the heat exchange tube and 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 seal on the entire inner connecting plate can only be replaced, which has a relatively high replacement cost and is relatively 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: A frame, wherein a plurality of through holes are provided on the front and rear sides of the frame; A plurality of heat exchange tubes, wherein the heat exchange tubes pass through corresponding perforations; Two communication structures, the two communication structures are respectively arranged at 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 with the sealed cavity, and the other end passes through the left side of the communication plate; A water outlet detection device is used to detect whether water is flowing out of each water outlet channel.

[0007] Preferably, the water outlet detection device comprises: A detection rod body, wherein 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, a detection groove is provided on the lower side of the detection channel, the detection channel is connected with the corresponding water outlet channel, a detection vertical channel is further provided in the detection rod body, one end of the detection channel away from the water outlet channel is connected with the detection vertical 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; The sensor is fixed on the outer wall of the sensing rod.

[0008] 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 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.

[0009] Preferably, the telescopic device comprises: A telescopic seat, the telescopic seat is fixed on the outer wall of the frame, a telescopic slide groove is provided in the telescopic seat, and a telescopic side groove connected to the telescopic slide groove is provided on the side wall of the telescopic seat; A telescopic screw, the telescopic screw being rotatably connected in the telescopic slide slot; 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.

[0010] 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 connecting groove, the sensing rod body is fixed on the lower side of the induction connecting plate, and the induction connecting groove connects the sensing groove with the detection vertical channel.

[0011] 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.

[0012] Preferably, the detection rod body includes an outer detection rod body and an inner detection rod body, the detection vertical channel is arranged in the outer detection rod body, the upper and lower ends of the detection vertical channel penetrate the detection rod body, the detection inner rod body is installed in the detection vertical channel, a lateral adjustment device is fixed to the upper end of the detection outer rod body, the upper end of the detection inner rod body is connected to the lateral adjustment device, the detection channel includes a fixed detection channel and a movable detection channel, the fixed detection channel is arranged in the outer detection rod body, the movable detection channel is arranged in the inner detection rod body, and the detection groove penetrates one end of the fixed detection channel close to the movable detection channel.

[0013] 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.

[0014] Preferably, a right fixed block is fixed on the right side of the frame, a right plug 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 plug rod is plugged into the right connecting groove.

[0015] A water leakage detection method is also disclosed, based on the above heat exchanger, comprising 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 groove, 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 that 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; The transverse limit bolt is turned to release the restriction on the detection inner rod body, and the detection inner rod body is moved 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.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (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. (2) When water leaks, 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. Then the water will pass through the detection channel. During the process, the water will overflow the detection groove and flow to the detection vertical channel, and then enter the sensing groove. The sensing float of the sensing groove will float up. At this time, the sensor can sense the floating of the sensing float, and the sensor will send out a water leakage signal. The main control system will send out an alarm signal, and the heat exchanger will stop running; (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 it can be known that the inner sealing ring in the sealing cavity is leaking and needs to be replaced in time. With the cooperation of a detection rod and a sensing rod, it is possible to know which inner sealing ring is leaking. The structure is very simple. (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; (5) When you need to drain the water in the sensor tank, just unscrew the drain bolt to drain it, which is very convenient; (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 groove from the lower end of the detection vertical channel and finally flows out from the drain threaded hole. The drainage is very convenient and can be observed next time after the drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the heat exchanger of the present invention; Figure 2 for Figure 1 A partial enlarged view of point I in the middle; Figure 3 It is a cross-sectional view of the connection between the connecting plate and the heat exchange tube; Figure 4 for Figure 1 Left view of Figure 5 for Figure 4 Cross-sectional view at AA in the middle; Figure 6 for Figure 5 A partial enlarged view of position II in the middle; Figure 7 for Figure 5 A partial enlarged view of the part III in the middle; Figure 8 is a structural schematic diagram of a connecting plate; Fig. 9 for Figure 1 Schematic diagram of part of the structure when the connecting plate is removed; Fig.10 It is a schematic diagram of the structure of the detection rod; Fig.11 It is a structural schematic diagram of another implementation method of the detection rod body; Fig.12 for Fig.11 A cross-sectional view of Fig.13 for Fig.12 A partial enlarged view of the IV in the middle; Fig.14 for Fig.12 A partial enlarged view of the middle V; Fig.15 It is a cross-sectional view of the connecting plate.

[0018] 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, limit 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 moving 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 limiting bolt; 45. Horizontal threaded hole; 46. Telescopic side groove; 47. Inner limiting ring groove; 48. Outer limiting ring groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 15 The present invention provides a technical solution for a heat exchanger and a water leakage detection method.

[0021] A heat exchanger, comprising: A frame 1, wherein a plurality of through holes 2 are provided on opposite front and rear sides of the frame 1; A plurality of heat exchange tubes 3, wherein the heat exchange tubes 3 pass through corresponding perforations 2; Two connecting structures, which are respectively arranged on the front and rear sides of the frame 1. The connecting structures make all the heat exchange tubes 3 form a continuous flow channel. The connecting structure includes a connecting plate 4. The connecting plate 4 is provided with a connecting hole 5 for inserting the end of the heat exchange tube 3. A connecting channel 6 is provided between the corresponding connecting holes 5. The connecting channel 6 connects the corresponding heat exchange tubes 3. An inner sealing ring 7 and an outer sealing ring 8 are fixed to the inner wall of the connecting hole 5. 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 connecting 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 connecting plate 4; The water outlet detection device is used to detect whether water is flowing out of each water outlet channel 10.

[0022] Since the inner walls of the inner sealing ring 7 and the outer sealing ring 8 are in contact with the outer wall of the heat exchange tube 3, water can be prevented from flowing out from 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 to the sealing cavity 9, and then flow out from 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, so as to know which connecting hole 5's inner sealing ring 7 needs to be replaced, and the corresponding inner sealing ring 7 can be replaced separately, and the replacement cost is low.

[0023] like Figure 6 and Figure 7 As shown, the water outlet detection device includes: 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 with the corresponding water outlet channel 10. A detection vertical channel 14 is also provided in the detection rod body 11. One end of the detection channel 12 away from the water outlet channel 10 is connected with the detection vertical channel 14. The lower end of the detection vertical channel 14 passes through the detection rod body 11. The sensing rod body 15 is arranged below the detection rod body 11, and a sensing slot 16 with an opening facing upward is arranged in the sensing rod body 15; A sensing float 17, wherein the sensing float 17 is installed in the sensing groove 16; The sensor 18 is fixed on the outer wall of the sensing rod body 15 .

[0024] When water leaks, water will flow from the gap between the inner sealing ring 7 and the heat exchange tube 3 to the sealing cavity 9, and then through the sealing 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 fill the detection groove 13 and flow to 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 remind the user to repair it in time.

[0025] 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 know which inner sealing ring 7 is leaking, and the structure is very simple.

[0026] like Figure 2-Figure 7 As shown, a limiting groove 19 is provided on the left side of the connecting plate 4, a telescopic device is provided on the outer wall of the frame 1, and the detection rod body 11 is installed on the telescopic device, which is used to drive the detection rod body 11 to be inserted into or leave the limiting groove 19.

[0027] When the telescopic device drives the detection rod 11 to be plugged into the limiting groove 19, the position of the connecting plate 4 can be limited, thereby preventing the connecting plate 4 from moving. At this time, the water outlet channel 10 is connected with the corresponding detection channel 12, and the detection rod 11 can play a limiting role and a detection role. When the connecting plate 4 needs to be removed, the telescopic device drives the detection rod 11 to move out of the limiting groove 19, and the connecting plate 4 can be removed.

[0028] like Figure 6 As shown, the telescopic device includes: 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, and a telescopic side groove 46 connected with the telescopic slide 21 is provided on the side wall of the telescopic seat 20; A telescopic screw 22, the telescopic screw 22 is rotatably connected in the telescopic slide slot 21; 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 with the telescopic threaded hole 24, and a telescopic connecting rod 25 extending from the telescopic side groove 46 is fixed on the telescopic slider 23, and the telescopic connecting rod 25 is fixedly connected to the detection rod body 11.

[0029] By rotating the telescopic screw 22 , the telescopic slider 23 can be driven to move in the telescopic slide groove 21 , and the telescopic slider 23 drives the detection rod body 11 to move through the telescopic connecting rod 25 , so that the detection rod body 11 can be plugged into or leave the limiting groove 19 .

[0030] like Figure 7 As shown, an induction connecting plate 26 is fixed on the outer wall of the frame 1, and the induction connecting plate 26 is arranged below the detection rod body 11. An induction connecting plate 26 is provided with an induction connecting groove 27. The sensing rod body 15 is fixed on the lower side of the induction connecting plate 26, and the induction connecting groove 27 connects the sensing groove 16 with the detection vertical channel 14.

[0031] The sensing rod body 15 is fixed to the frame body 1 through the sensing connecting plate 26 , the lower side of the detection rod body 11 is in contact with the upper side of the sensing connecting plate 26 , and the sensing connecting plate 26 does not affect the movement of the detection rod body.

[0032] like Figure 7 As shown, a drain threaded hole 28 is provided at the bottom of the sensing tank 16, 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 drain the water. To replace the inner sealing ring, only the connecting plate needs to be disassembled, which is very convenient.

[0033] like Figure 11-Figure 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 a detection outer rod body 30 and a detection inner rod body 31. The detection vertical channel 14 is arranged in the detection outer rod body 30. The upper and lower ends of the detection vertical channel 14 penetrate the detection outer rod body 30. The detection inner rod body 31 is installed in the detection vertical channel 14. A lateral adjustment device is fixed to the upper end of the detection outer rod body 30. The upper end of the detection inner rod body 31 is connected to the lateral adjustment device. The lateral adjustment device can drive the detection inner rod body 31 to move laterally. The detection channel 12 includes a detection fixed channel 32 and a detection movable channel 33. The detection fixed channel 32 is arranged in the detection outer rod body 30, and the detection movable channel 33 is arranged in the detection inner rod body 31. The detection groove 13 is located on the lower side of the detection fixed channel 32, and the detection groove 13 penetrates the detection fixed channel 32 close to the end of the detection movable channel 33.

[0034] When it is not necessary to drain water, the inner rod body 31 is detected to be in the Fig.14In the middle position, water will enter the detection groove 13 through the detection fixed channel 32, and then enter the detection vertical channel 14 from the detection moving channel 33. Whether there is water leakage can be confirmed by observing whether there is water in the detection groove 13. When it is necessary to drain the water in the detection groove 13, 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, and the water enters the sensing groove 16 from the lower end of the detection vertical channel 14, and finally from the water discharge threaded hole 28. The water is very convenient to drain, and it is convenient for observation next time after the water is discharged.

[0035] like Figure 5 and Fig. 9 As shown, a right fixed block 36 is fixed to the right side of the frame 1, and a right plug 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 plug rod 37 is plugged into the right connecting groove 39, which can limit the left and right positions of the connecting plate 4.

[0036] like Fig.13 As shown, the lateral adjustment device includes: A first transverse fixing block 40, the first transverse fixing block 40 is fixed to the upper side of the detection outer rod body 30; A second transverse fixing block 41, which is fixed to the upper side of the detection outer rod body 30; A transverse fixing rod 42, the transverse fixing rod 42 is fixed between the first transverse fixing block 40 and the second transverse fixing block 41, and a transverse sliding groove 43 is provided at the upper end of the detection inner rod body 31, and the transverse fixing rod 42 is plugged into the transverse sliding groove 43; The transverse limiting bolt 44 and the first transverse fixing block 40 are provided with a transverse threaded hole 45 , and 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 .

[0037] like Fig.13 and Fig.14 As shown, since the transverse fixing rod 42 is plugged 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 against 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.

[0038] 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 connecting plate 4, and the second mark 35 is marked on the outer side of the connecting hole 5 connected with the corresponding detection channel 12. For example, if the first mark 34 corresponding to the top detection channel 12 is 1, then the second mark 35 corresponding to the connecting hole 5 connected with the top detection channel 12 is also 1. If water is found in the detection groove 13 of the top detection channel 12, it is only necessary to replace the inner sealing ring 7 in the connecting hole 5 corresponding to the second mark 35.

[0039] like Figure 3 As shown, the inner wall of the connecting 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 .

[0040] Since the outer sealing ring 8 plays a role of water blocking, it basically does not need to be replaced, but can be replaced when necessary. Of course, the sensing rod body 15 can also be made relatively larger, and the sensing groove 16 can also be relatively enlarged to accommodate more water. The sensing rod body 15 and the telescopic connecting rod can be fixed by bolts. When the sensing rod body needs to be disassembled, the bolts can be removed.

[0041] 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 located below the sealed cavity 9 is vertically downward, and the other sections are arranged horizontally.

[0042] 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 detection rod body 11 and the increasing connecting plate 4 can be detected.

[0043] A water leakage detection method is also disclosed. The detection method is based on the above heat exchanger and comprises the following steps: When there is a water leak, 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 leak signal; 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; After the telescopic device drives the detection rod body 11 to leave the limiting groove 19, the connecting plate 4 is removed and the corresponding inner sealing ring 7 is replaced; The transverse limiting bolt is rotated to release the restriction on the detection inner rod body 31, and the detection inner rod body 31 is moved away from the detection groove 13, so that the water in the detection groove 13 flows out of the detection groove 13; Unscrew the drain bolt 29 to drain the water.

[0044] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger, characterized in that: include: A frame, wherein a plurality of through holes are provided on the front and rear sides of the frame; A plurality of heat exchange tubes, wherein the heat exchange tubes pass through corresponding perforations; Two communication structures, the two communication structures are respectively arranged at 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 with the sealed cavity, and the other end passes through the left side of the communication plate; A water outlet detection device is used to detect whether water is flowing out of each water outlet channel.

2. A heat exchanger according to claim 1, characterized in that: The water outlet detection device comprises: A detection rod body, wherein 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, a detection groove is provided on the lower side of the detection channel, the detection channel is connected with the corresponding water outlet channel, a detection vertical channel is further provided in the detection rod body, one end of the detection channel away from the water outlet channel is connected with the detection vertical 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; The sensor is fixed on the outer wall of the sensing rod.

3. A heat exchanger according to claim 2, characterized in that: 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 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.

4. A heat exchanger according to claim 3, characterized in that: The telescopic device comprises: A telescopic seat, the telescopic seat is fixed on the outer wall of the frame, a telescopic slide groove is provided in the telescopic seat, and a telescopic side groove connected to the telescopic slide groove is provided on the side wall of the telescopic seat; A telescopic screw, the telescopic screw being rotatably connected in the telescopic slide slot; 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.

5. A heat exchanger according to claim 3, characterized in that: 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 induction rod body is fixed on the lower side of the induction connecting plate, and the induction communicating groove connects the induction groove with the detection vertical channel.

6. A heat exchanger according to claim 5, characterized in that: 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.

7. A heat exchanger according to claim 6, characterized in that: The detection rod body includes an outer detection rod body and an inner detection rod body, the detection vertical channel is arranged in the outer detection rod body, the upper and lower ends of the detection vertical channel penetrate the outer detection rod body, the detection inner rod body is installed in the detection vertical channel, a lateral adjustment device is fixed to the upper end of the detection outer rod body, 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 outer detection rod body, the detection movable channel is arranged in the inner detection rod body, and the detection groove penetrates one end of the detection fixed channel close to the detection movable channel.

8. A heat exchanger according to claim 2, characterized in that: 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.

9. A 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 plugging 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 plugging rod is plugged into the right connecting slot.

10. A water leakage detection method, characterized in that: The heat exchanger according to any one of claims 1 to 9 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 groove, 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 that 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; The transverse limit bolt is turned to release the restriction on the detection inner rod body, and the detection inner rod body is moved 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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