Waste heat recovery device

Abstract

The waste heat recovery device comprises a shell, a heat exchange tube, a first sealing plate and a first clamping structure, a containing cavity is formed in the shell, at least part of the heat exchange tube is arranged in the containing cavity, a water inlet hole, a water outlet hole and an installation opening are formed in the shell, the heat exchange tube passes through the installation opening, the first sealing plate detachably covers the installation opening, and the first clamping structure is arranged on the first sealing plate. One end of the heat exchange pipe is fixed to the first sealing plate, and the other end of the heat exchange pipe is detachably connected with the shell. The number of the first clamping structures is at least two, the two first clamping structures are located at the two opposite ends of the first sealing plate respectively, first clamping holes matched with the first clamping structures are formed in the two sides of the shell respectively, the first clamping structures are provided with first clamping ends, and the first clamping structures are detachably arranged in the first clamping holes. The heat exchange pipe can be installed in or moved out of the containing cavity through the installation opening, and the heat exchange pipe can be conveniently overhauled and replaced. The first sealing plate can guarantee sealing of the mounting opening, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of heat energy recovery in thermal power plants, and in particular to a waste heat recovery device. Background Art

[0002] The steam turbine exhaust heat recovery system in a thermal power plant uses heat exchange equipment to recover and reuse the heat energy in the exhaust steam after the steam has finished driving the turbine. For example, the high-temperature heat energy in the exhaust steam can be used for heating, drying, or other industrial processes, thus achieving cascaded energy utilization.

[0003] In the related art, heat exchange tubes are usually used to replace the heat in steam into water. However, the box used for heat exchange is usually closed, and the heat exchange tubes in the box are inconvenient to replace, which is not conducive to the maintenance of the device. Utility Model Content

[0004] The purpose of the present disclosure is to provide a waste heat recovery device to solve the above technical problems.

[0005] To achieve the above-mentioned objectives, the present disclosure provides a waste heat recovery device, comprising a shell, a heat exchange tube, a first sealing plate, and a first clamping structure. The shell is formed with a housing cavity, and at least a portion of the heat exchange tube is disposed in the housing cavity. The shell is formed with a water inlet, a water outlet, and an installation port. The installation port is used for the heat exchange tube to pass through. The first sealing plate is detachably covered on the installation port. One end of the heat exchange tube is fixed to the first sealing plate, and the other end of the heat exchange tube is detachably connected to the shell.

[0006] There are at least two first clamping structures, and the two first clamping structures are respectively located at the opposite ends of the first sealing plate. First clamping holes cooperating with the first clamping structures are respectively formed on both sides of the shell. The first clamping structure has a first clamping end, and the first clamping structure can be detachably arranged in the first clamping hole.

[0007] Optionally, the first clamping structure also includes a first body, a first movable part and a first elastic member, a blind hole is formed on the first body, one end of the first movable part is inserted into the blind hole, the other end of the first movable part is constructed as the first clamping end, the first elastic member is arranged in the blind hole, one end of the first elastic member is abutted against the inner wall of the blind hole, and the other end of the first elastic member is connected to the first movable part to provide elastic force for keeping the first clamping end in the first clamping hole.

[0008] Optionally, the first movable portion is constructed as a cone, the large end of the cone is axially movably disposed in the blind hole, and the small end of the cone is the first clamping end.

[0009] Optionally, the waste heat recovery device further includes a second sealing plate, and a spare port is further formed on the shell, the second sealing plate detachably covers the spare port, and the spare port is used for the heat exchange pipe to pass through;

[0010] The waste heat recovery device also includes at least two second clamping structures, which are respectively located at opposite ends of the second sealing plate. Second clamping holes that cooperate with the second clamping structures are respectively formed on both sides of the shell. The second clamping structure has a second clamping end, and the second clamping structure can be detachably arranged in the second clamping hole.

[0011] Optionally, the second clamping structure further includes a second body, a second movable portion and a second elastic member;

[0012] The second body is formed with a mounting groove and a communication hole extending along the movable direction of the second movable part, and one end of the communication hole is connected to the inner wall of the mounting groove;

[0013] The second movable portion includes a first part and a second part connected to each other, the first part is movably arranged in the installation groove, the second part is passed through the communication hole, and an end of the first part away from the second part is configured as the second clamping end;

[0014] The second elastic member is arranged in the installation groove, one end of the second elastic member is against the inner wall of the installation groove, and the other end of the second elastic member is connected to the first part. The second elastic member is used to provide elastic force for the second clamping end to remain in the second clamping hole.

[0015] Optionally, the first sealing plate and the second sealing plate have the same size, and the first clamping end can be detachably disposed in the second clamping hole.

[0016] Optionally, a plurality of steam outlet holes are formed on the shell, there are a plurality of heat exchange tubes, and the outlets of the plurality of heat exchange tubes are detachably connected to some of the plurality of steam outlet holes. The waste heat recovery device also includes a sealing plug, which is used to seal the steam outlet holes among the plurality of steam outlet holes that are not connected to the outlet of the heat exchange tube.

[0017] Optionally, the waste heat recovery device also includes a fixed plate arranged in the accommodating cavity, the heat exchange tube includes a plurality of connected straight segments and a plurality of bent segments to form an S-shaped pipeline, a plurality of through holes are formed at intervals on the fixed plate, and the plurality of straight segments are respectively passed through the plurality of through holes.

[0018] Optionally, the waste heat recovery device further includes at least two support plates, both of which are disposed in the accommodating cavity, and both ends of the support plates are respectively connected to the inner wall of the shell;

[0019] A gap is formed between the two support plates for allowing the heat exchange tube to pass through, and the upper surfaces of the two support plates are in contact with the lower surface of the fixing plate.

[0020] Optionally, the waste heat recovery device further includes a cleaning structure, which is disposed in the housing and includes a cleaning brush, wherein one side of the bristles of the cleaning brush is in contact with the wall of the heat exchange tube.

[0021] The cleaning structure also includes a connecting plate, both ends of which are respectively connected to the inner wall of the shell, and the cleaning brush is arranged on the surface of the connecting plate on one side close to the heat exchange tube. There are two connecting plates and two cleaning brushes, and the two cleaning brushes are respectively located on both sides of the heat exchange tube. The two cleaning brushes are connected to the inner wall of the shell through the connecting plate.

[0022] Through the above technical solution, the first clamping structure is detachably connected to the housing, allowing the first sealing plate to switch between covering the mounting opening and exposing the mounting opening. On the one hand, this allows the first sealing plate to be separated from the housing, allowing the heat exchange tube to be installed in or removed from the accommodating cavity through the mounting opening, facilitating the inspection and replacement of the heat exchange tube. On the other hand, when the first sealing plate covers the mounting opening, the first clamping structure can also ensure that the first sealing plate seals the mounting opening, thereby reducing heat loss during the heat exchange process and improving heat exchange efficiency.

[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 is a perspective view of a waste heat recovery device provided by an embodiment of the present disclosure, wherein a heat exchange tube is shown;

[0026] Figure 2 yes Figure 1 Enlarged view of part A;

[0027] Figure 3 This is an assembly perspective view of a second sealing plate and a second clamping structure of a waste heat recovery device provided in one embodiment of the present disclosure;

[0028] Figure 4 This is a perspective view of the assembly of a first sealing plate and a heat exchange tube of a waste heat recovery device provided in one embodiment of the present disclosure;

[0029] Figure 5 is a specific three-dimensional diagram of the housing of a waste heat recovery device provided by an embodiment of the present disclosure, wherein a cleaning structure is shown;

[0030] Figure 6 is a three-dimensional diagram of a waste heat recovery device provided in one embodiment of the present disclosure;

[0031] Figure 7 This is a perspective view of a waste heat recovery device provided by an embodiment of the present disclosure (with Figure 6 different perspectives).

[0032] Description of Reference Numerals

[0033] 100 - Waste heat recovery device; 1 - Housing; 11 - Water inlet; 12 - Water outlet; 13 - Mounting port; 14 - Spare port; 15 - First clamping hole; 16 - Second clamping hole; 17 - Steam outlet; 18 - Steam outlet pipe; 19 - Mounting portion; 2 - Heat exchange tube; 21 - One-way valve; 3 - First sealing plate; 31 - Mounting handle; 4 - First clamping structure; 41 - First clamping end; 42 - First body; 421 - Blind hole; 43 - First movable portion; 44-first elastic member; 5-second sealing plate; 51-mounting handle; 6-second clamping structure; 61-second clamping end; 62-second body; 621-mounting groove; 622-connecting hole; 63-second movable part; 631-first part; 632-second part; 6321-stop part; 64-second elastic member; 7-sealing plug; 8-fixing plate; 9-support plate; 10-cleaning structure; 101-cleaning brush; 102-connecting plate. DETAILED DESCRIPTION

[0034] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0035] In this disclosure, unless otherwise indicated, directional terms such as "upper" and "lower" are generally defined with reference to the drawing orientation of the corresponding drawings. These terms are used solely to facilitate description and simplify the present disclosure. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, structure, or operation. Therefore, they should not be construed as limitations of the present disclosure. "Inner" and "outer" refer to the inner and outer sides of the corresponding components. Furthermore, the terms "first" and "second," etc., are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0036] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "connected," and "installed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0037] like Figures 1 to 7 As shown, the present disclosure provides a waste heat recovery device 100, including a shell 1, a heat exchange tube 2, a first sealing plate 3 and a first clamping structure 4. A accommodating cavity is formed in the shell 1, and at least a portion of the heat exchange tube 2 is arranged in the accommodating cavity. A water inlet hole 11, a water outlet hole 12 and an installation port 13 are formed on the shell 1. The installation port 13 is used for the heat exchange tube 2 to pass through. The first sealing plate 3 is detachably covered on the installation port 13. One end of the heat exchange tube 2 is fixed on the first sealing plate 3, and the other end of the heat exchange tube 2 is detachably connected to the shell 1.

[0038] There are at least two first clamping structures 4, and the two first clamping structures 4 are respectively located at the opposite ends of the first sealing plate 3. First clamping holes 15 that cooperate with the first clamping structures 4 are respectively formed on both sides of the shell 1. The first clamping structure 4 has a first clamping end 41, and the first clamping structure 4 can be detachably arranged in the first clamping hole 15.

[0039] During routine maintenance and inspection of the waste heat recovery device 100, the first engaging end 41 of the first engaging structure 4 can be controlled to withdraw from the first engaging hole 15, thereby separating the first sealing plate 3 from the housing 1 and exposing the mounting opening 13. At the same time, since one end of the heat exchange tube 2 is fixed to the first sealing plate 3, separating the first sealing plate 3 from the mounting opening 13 can also drive the heat exchange tube 2 to pass through the mounting opening 13 and out of the accommodating cavity of the housing 1.

[0040] Through the above technical solution, the first clamping structure 4 is detachably connected to the housing 1, allowing the first sealing plate 3 to switch between covering the installation opening 13 and exposing the installation opening 13. On the one hand, this allows the first sealing plate 3 to be separated from the housing 1, allowing the heat exchange tube 2 to be installed in or removed from the accommodating cavity through the installation opening 13, facilitating the inspection and replacement of the heat exchange tube 2. On the other hand, when the first sealing plate 3 covers the installation opening 13, the first clamping structure 4 can also ensure that the first sealing plate 3 seals the installation opening 13, thereby reducing heat loss during the heat exchange process and improving heat exchange efficiency.

[0041] Alternatively, as Figure 2As shown, the first clamping structure 4 also includes a first body 42, a first movable portion 43, and a first elastic member 44. A blind hole 421 is formed in the first body 42. One end of the first movable portion 43 is inserted into the blind hole 421, and the other end of the first movable portion 43 is configured as a first clamping end 41. The first elastic member 44 is disposed in the blind hole 421. One end of the first elastic member 44 abuts against the inner wall of the blind hole 421, and the other end of the first elastic member 44 is connected to the first movable portion 43 to provide elastic force to maintain the first clamping end 41 in the first clamping hole 15. When the first clamping end 41 is located in the first clamping hole 15, the first movable portion 43 can maintain a tendency to move toward the first clamping hole 15 under the elastic action of the first elastic member 44, thereby ensuring that the first sealing plate 3 does not fall off from the housing 1. When removing the first sealing plate 3 from the mounting opening 13 , the end of the first movable portion 43 outside the blind hole 421 can be squeezed to compress the first elastic member 44 so that the first clamping end 41 exits the first clamping hole 15 , thereby facilitating the removal of the first sealing plate 3 .

[0042] The present disclosure does not limit the specific structure of the first movable portion 43. In one embodiment provided in the present disclosure, Figure 1 and Figure 2 As shown, the first movable portion 43 is constructed as a cone, with the large end of the cone axially movably disposed within the blind hole 421, and the small end of the cone serving as the first clamping end 41. When the first clamping end 41 is located within the first clamping hole 15, the side of the cone with a larger diameter can abut against the inner wall of the first clamping hole 15, thereby maintaining the first clamping end 41 within the first clamping hole 15. When the first sealing plate 3 is removed from the mounting opening 13, since the cone has a conical surface, as the first sealing plate 3 moves in the vertical direction, the inner wall of the first clamping hole 15 and the conical surface of the cone slide relative to each other, pushing the cone toward the inside of the blind hole 421 and further out of the first clamping hole 15.

[0043] In another embodiment provided in the present disclosure, the first movable part 43 can be constructed as a wedge block, which has two wedge surfaces arranged opposite to each other in the vertical direction. The two wedge surfaces can provide thrust to the first movable part 43 when the first movable part 43 enters the first clamping hole 15 and when the first movable part 43 exits the first clamping hole 15, so that the first movable part 43 can move toward the blind hole 421.

[0044] Optionally, the first engaging hole 15 may be a tapered hole, and the tapered hole may match the shape of the first movable portion 43 configured as a cone, so that the first movable portion 43 and the first engaging hole 15 fit more tightly.

[0045] Alternatively, as Figure 1 and Figure 3As shown, the waste heat recovery device 100 further includes a second sealing plate 5. A spare port 14 is formed on the shell 1. The second sealing plate 5 is detachably covered on the spare port 14. The spare port 14 is used for the heat exchange tube 2 to pass through.

[0046] The waste heat recovery device 100 may also include at least two second clip structures 6, which are located at opposite ends of the second sealing plate 5. Second clip holes 16 that cooperate with the second clip structures 6 are formed on both sides of the shell 1. The second clip structure 6 has a second clip end 61, and the second clip structure 6 is detachably disposed within the second clip hole 16. During daily use, the second sealing plate 5 covers the spare port 14 and is connected to the shell 1 via the second clip structure 6 to ensure the sealing of the shell 1. When the waste heat recovery device 100 needs to increase the heat exchange tube 2 to improve the heat exchange efficiency, the second clip end 61 of the second clip structure 6 can be moved out of the second clip hole 16, thereby separating the second sealing plate 5 and the shell 1, exposing the spare port 14. The number of heat exchange tubes 2 can be increased through the spare port 14, thereby further improving the heat exchange efficiency.

[0047] Optionally, an operating portion is formed on both the first sealing plate 3 and the second sealing plate 5 , and an operator can remove or install the first sealing plate 3 and the second sealing plate 5 through the operating portion, thereby improving the convenience of removing the first sealing plate 3 and the second sealing plate 5 .

[0048] The present disclosure does not limit the specific structure of the operating part. For example, Figure 3 and Figure 4 As shown, the first sealing plate 3 can be configured to install a handle 31 , and the second sealing plate 5 can be configured to install a handle 51 .

[0049] Alternatively, as Figure 6 and Figure 7 As shown, two mounting portions 19 arranged opposite to each other may be formed on the housing 1 , a first snap-fitting hole 15 is formed on the mounting portion 19 at a position corresponding to the first snap-fitting structure 4 , and a second snap-fitting hole 16 is formed at a position corresponding to the second snap-fitting structure 6 .

[0050] Alternatively, as Figure 3 As shown, the second clamping structure 6 further includes a second body 62, a second movable portion 63 and a second elastic member 64. The second body 62 is formed with a mounting groove 621 and a connecting hole 622 extending along the movable direction of the second movable portion 63. One end of the connecting hole 622 is connected to the inner wall of the mounting groove 621.

[0051] The second movable portion 63 includes a first portion 631 and a second portion 632 connected to each other. The first portion 631 is movably disposed within the mounting slot 621, and the second portion 632 is disposed through the communicating hole 622. The end of the first portion 631 away from the second portion 632 is configured as the second clamping end 61. A second elastic member 64 is disposed within the mounting slot 621. One end of the second elastic member 64 abuts against the inner wall of the mounting slot 621, and the other end of the second elastic member 64 is connected to the first portion 631. The second elastic member 64 is used to provide an elastic force to maintain the second clamping end 61 within the second clamping hole 16.

[0052] Because the first portion 631 and the second portion 632 of the second movable portion 63 are connected, the second portion 632 is movably inserted into the connecting hole 622 to drive the first portion 631 to move within the mounting slot 621. When the second sealing plate 5 covers the backup port 14, the first portion 631 of the second movable portion 63 is positioned within the second engaging hole 16 under the action of the second elastic member 64. To remove the second sealing plate 5 from the backup port 14, the second portion 632 can be pulled to move the first portion 631 away from the second engaging hole 16, thereby allowing the second engaging end 61 to exit the second engaging hole 16.

[0053] Alternatively, as Figure 3 As shown, a stopper 6321 is formed at one end of the second portion 632 away from the first portion 631. The stopper 6321 can abut against the outer surface of the second body 62 to prevent the second portion 632 from retreating into the communicating hole 622 under the elastic action of the second elastic member 64. Furthermore, the stopper 6321 can also be grasped by an operator to facilitate pulling the second engaging end 61 out of the second engaging hole 16 via the second portion 632.

[0054] Alternatively, as Figure 3 As shown, the side of the first part 631 in contact with the shell 1 can have an arcuate surface, which is conducive to converting the vertical pressure received by the first part 631 into a thrust in the horizontal direction, thereby facilitating the installation connection between the second clamping structure 6 and the shell 1.

[0055] In order to facilitate the addition of heat exchange tubes 2, optionally, as Figure 1As shown, the first sealing plate 3 and the second sealing plate 5 have the same size, and the first clamping end 41 can be detachably arranged in the second clamping hole 16. In daily use, the first sealing plate 3 covers the installation port 13, and the second sealing plate 5 covers the spare port 14 to reduce the heat loss of the waste heat recovery device 100 during operation. When it is necessary to increase the heat exchange efficiency of the waste heat recovery device 100, the second sealing plate 5 can be removed, and at the same time, the heat exchange tube 2 installed on the first sealing plate 3 can be installed into the shell 1 through the spare port 14. Since the first sealing plate 3 and the second sealing plate 5 have the same size, the first sealing plate 3 can also play a good sealing role when covering the spare port 14. In addition, the first clamping end 41 can be detachably arranged in the second clamping hole 16, which can also ensure the normal installation and disassembly of the first clamping structure 4 and the second clamping hole 16.

[0056] In order to adapt to different numbers of heat exchange tubes 2, optionally, as Figure 1 and Figure 6 As shown, the shell 1 is also formed with multiple steam outlets 17. There are multiple heat exchange tubes 2, and the outlets of the multiple heat exchange tubes 2 are detachably connected to some of the multiple steam outlets 17. The waste heat recovery device 100 also includes a sealing plug 7, which is used to seal the steam outlets 17 that are not connected to the outlets of the heat exchange tubes 2. Since there are multiple heat exchange tubes 2, the waste heat recovery device 100 can add or remove heat exchange tubes 2 according to actual operational needs. The inlet of the heat exchange tube 2 can be set on the first sealing plate 3, and the outlet of the heat exchange tube 2 can be connected to any steam outlet 17 provided on the shell 1, thereby discharging the steam after heat exchange. When no heat exchange tubes 2 are added to the waste heat recovery device 100, some steam outlets 17 are idle. In this case, sealing the steam outlets 17 with the sealing plug 7 ensures the sealing of the shell 1, reducing leakage of the heat exchange liquid or heat loss.

[0057] Optionally, a steam outlet pipe 18 is detachably mounted on the steam outlet hole 17, an external thread is formed on the outer peripheral surface of one end of the steam outlet pipe 18, and internal threads are formed on the inner wall of the steam outlet hole 17 and the inner wall at the outlet of the heat exchange tube 2. The steam outlet pipe 18 can be threadedly connected to the steam outlet hole 17 and the steam outlet pipe 18 respectively to connect the outlet of the heat exchange tube 2 with the steam outlet hole 17.

[0058] In order to better support the heat exchange tube 2, optionally, as Figure 4As shown, the waste heat recovery device 100 also includes a fixed plate 8 disposed in the accommodating cavity, and the heat exchange tube 2 includes a plurality of connected straight segments and a plurality of bent segments to form an S-shaped pipeline. A plurality of through holes are formed at intervals on the fixed plate 8, and the plurality of straight segments are respectively inserted into the plurality of through holes. The provision of a plurality of connected straight segments and bent segments can increase the heat exchange area of ​​the heat exchange tube 2, so that the steam in the heat exchange tube 2 can contact the heat exchange liquid as much as possible, thereby improving the heat exchange effect. Fixing the plurality of straight segments through the fixed plate 8 can, on the one hand, improve the integrity of the heat exchange tube 2 and facilitate the installation and disassembly of the heat exchange tube 2; on the other hand, it can also prevent the straight segments of the heat exchange tube 2 from being misaligned due to uneven force, thereby causing leakage of the heat exchange tube 2.

[0059] Alternatively, as Figure 4 As shown, a drain outlet is provided on the bending section between two adjacent straight sections, and a one-way valve 21 is provided at the drain outlet. The one-way valve 21 allows the condensed water in the heat exchange tube 2 to be discharged through the drain outlet, while the heated water in the shell 1 will not enter the heat exchange tube 2 through the drain outlet, thereby ensuring the heat exchange efficiency.

[0060] Alternatively, as Figure 5 As shown, the waste heat recovery device 100 also includes at least two support plates 9, both of which are disposed within the accommodating cavity. The two ends of the support plates 9 are respectively connected to the inner wall of the shell 1. A gap is formed between the two support plates 9 for the passage of the heat exchange tube 2. The upper surfaces of the two support plates 9 abut against the lower surface of the fixed plate 8. By disposing the support plates 9 within the shell 1 and utilizing the gap between the two support plates 9 to accommodate the heat exchange tube 2 while supporting the fixed plate 8, the heat exchange tube 2 can be limited and supported in the horizontal and vertical directions, thereby ensuring that the heat exchange tube 2 will not deform or leak due to stress during use.

[0061] In order to improve the heat exchange efficiency, optionally, as Figure 5 As shown, the waste heat recovery device 100 further includes a cleaning structure 10 , which is disposed in the housing 1 . The cleaning structure 10 includes a cleaning brush 101 , and one side of the bristles of the cleaning brush 101 is in contact with the wall of the heat exchange tube 2 .

[0062] The cleaning structure 10 also includes a connecting plate 102, the two ends of which are respectively connected to the inner wall of the shell 1, and the cleaning brush 101 is arranged on the side surface of the connecting plate 102 close to the heat exchange tube 2. There are two connecting plates 102 and two cleaning brushes 101. The two cleaning brushes 101 are respectively located on both sides of the heat exchange tube 2, and the two cleaning brushes 101 are connected to the inner wall of the shell 1 through the connecting plate 102.

[0063] Since cleaning brushes 101 are provided on both sides of the heat exchange tube 2, when the heat exchange tube 2 is inserted into or taken out through the installation port 13 or the spare port 14, the tube wall of the heat exchange tube 2 can rub against the bristles of the cleaning brush 101, so that the cleaning brush 101 can clean the scale and other attachments on the tube wall of the heat exchange tube 2, thereby improving the heat exchange effect between the steam in the heat exchange tube 2 and the water in the shell 1, and further improving the heat exchange efficiency.

[0064] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0065] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0066] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A waste heat recovery device, characterized in that: The heat exchange tube comprises a shell, a heat exchange tube, a first sealing plate, and a first clamping structure. The shell is formed with a receiving cavity, and at least a portion of the heat exchange tube is disposed in the receiving cavity. The shell is formed with a water inlet, a water outlet, and an installation port. The installation port is used for the heat exchange tube to pass through. The first sealing plate is detachably covered on the installation port. One end of the heat exchange tube is fixed to the first sealing plate, and the other end of the heat exchange tube is detachably connected to the shell. There are at least two first clamping structures, and the two first clamping structures are respectively located at the opposite ends of the first sealing plate. First clamping holes cooperating with the first clamping structures are respectively formed on both sides of the shell. The first clamping structure has a first clamping end, and the first clamping structure can be detachably arranged in the first clamping hole.

2. The waste heat recovery device according to claim 1, characterized in that: The first clamping structure also includes a first body, a first movable part and a first elastic member. A blind hole is formed on the first body. One end of the first movable part is inserted into the blind hole. The other end of the first movable part is constructed as the first clamping end. The first elastic member is arranged in the blind hole. One end of the first elastic member is abutted against the inner wall of the blind hole. The other end of the first elastic member is connected to the first movable part to provide elastic force to keep the first clamping end in the first clamping hole.

3. The waste heat recovery device according to claim 2, characterized in that: The first movable portion is configured as a cone, the large end of the cone is axially movably disposed in the blind hole, and the small end of the cone serves as the first clamping end.

4. The waste heat recovery device according to claim 1, characterized in that: The waste heat recovery device further includes a second sealing plate. A spare port is formed on the shell. The second sealing plate is detachably covered on the spare port. The spare port is used for the heat exchange pipe to pass through. The waste heat recovery device also includes at least two second clamping structures, which are respectively located at opposite ends of the second sealing plate. Second clamping holes that cooperate with the second clamping structures are respectively formed on both sides of the shell. The second clamping structure has a second clamping end, and the second clamping structure can be detachably arranged in the second clamping hole.

5. The waste heat recovery device according to claim 4, characterized in that: The second clamping structure further includes a second body, a second movable portion and a second elastic member; The second body is formed with a mounting groove and a communication hole extending along the movable direction of the second movable part, and one end of the communication hole is connected to the inner wall of the mounting groove; The second movable portion includes a first part and a second part connected to each other, the first part is movably arranged in the installation groove, the second part is passed through the communication hole, and an end of the first part away from the second part is configured as the second clamping end; The second elastic member is arranged in the installation groove, one end of the second elastic member is against the inner wall of the installation groove, and the other end of the second elastic member is connected to the first part. The second elastic member is used to provide elastic force for the second clamping end to remain in the second clamping hole.

6. The waste heat recovery device according to claim 4, characterized in that: The first sealing plate and the second sealing plate have the same size, and the first clamping end can be detachably disposed in the second clamping hole.

7. The waste heat recovery device according to any one of claims 1 to 6, characterized in that: A plurality of steam outlet holes are also formed on the shell, and there are a plurality of heat exchange tubes. The outlets of the plurality of heat exchange tubes are detachably connected to some of the plurality of steam outlet holes. The waste heat recovery device also includes a sealing plug, which is used to seal the steam outlet holes among the plurality of steam outlet holes that are not connected to the outlet of the heat exchange tube.

8. The waste heat recovery device according to any one of claims 1 to 6, characterized in that: The waste heat recovery device also includes a fixed plate arranged in the accommodating cavity, the heat exchange tube includes multiple straight segments and multiple bent segments connected to form an S-shaped pipeline, and multiple through holes are formed at intervals on the fixed plate, and the multiple straight segments are respectively inserted into the multiple through holes.

9. The waste heat recovery device according to claim 8, characterized in that: The waste heat recovery device further includes at least two support plates, both of which are disposed in the accommodating cavity, and both ends of the support plates are respectively connected to the inner wall of the shell; A gap is formed between the two support plates for allowing the heat exchange tube to pass through, and the upper surfaces of the two support plates are in contact with the lower surface of the fixing plate.

10. The waste heat recovery device according to claim 8, characterized in that: The waste heat recovery device further includes a cleaning structure, which is disposed in the housing and includes a cleaning brush, wherein one side of the bristles of the cleaning brush is in contact with the wall of the heat exchange tube. The cleaning structure also includes a connecting plate, both ends of which are respectively connected to the inner wall of the shell, and the cleaning brush is arranged on the surface of the connecting plate on one side close to the heat exchange tube. There are two connecting plates and two cleaning brushes, and the two cleaning brushes are respectively located on both sides of the heat exchange tube. The two cleaning brushes are connected to the inner wall of the shell through the connecting plate.

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