Oil refining water circulation heat exchanger

Abstract

The application relates to the technical field of oil refining, in particular to a water-circulating heat exchanger for oil refining, which comprises a storage bin, a heat exchange box and a heat conduction box, the heat conduction box is arranged in the heat exchange box, and a heat exchange cavity is arranged between the heat conduction box and the heat exchange box; a heat conduction pipe group is arranged at least partially in the heat conduction box, the heat conduction pipe group comprises a water inlet main pipe, heat exchange branch pipes and a water outlet main pipe, the heat exchange branch pipes are provided in plurality, one end of each heat exchange branch pipe is communicated with the water inlet main pipe, and the other end is communicated with the water outlet main pipe; heat exchange pipes are arranged at least partially in the heat exchange cavity; a heat conduction medium is arranged in the heat conduction box, so that the heat conduction pipe group transmits heat to the heat exchange pipes; and a flow interception assembly is arranged between each heat exchange branch pipe and the water inlet main pipe, and the flow interception assembly is used for communicating the heat exchange branch pipe with the water inlet main pipe. The application can block the heat exchange branch pipes with leakage, avoid liquid leakage from polluting the external environment, and ensure normal work of other heat exchange branch pipes.

Description

Technical Field

[0001] This application relates to the technical field of oil refining, and in particular to an oil refining water circulation heat exchanger. Background Technology

[0002] Refining water circulating heat exchangers are commonly used equipment in the petrochemical industry, primarily to improve the efficiency of heat energy utilization during the refining process. They transfer heat energy from the high-temperature end to the low-temperature end through circulating water, thereby achieving energy recovery and utilization and reducing energy consumption. In the modern petroleum industry, water resources are used extensively, and without effective treatment measures, serious water waste can occur. Therefore, it is necessary to reduce industrial water consumption through the application of circulating water treatment technology, improving refining efficiency while achieving the rational utilization of water resources.

[0003] Existing circulating water heat exchangers are prone to leaks and blockages during use. If these issues are not addressed promptly, they will affect the system's heat exchange efficiency. Summary of the Invention

[0004] To address the problems of leakage and blockage in existing heat exchangers, this application provides a refinery water circulation heat exchanger.

[0005] This application provides a refining water circulating heat exchanger, which adopts the following technical solution:

[0006] A refining water circulation heat exchanger includes a heat exchange box and a heat transfer box, the heat transfer box being located inside the heat exchange box, and a heat exchange cavity being provided between the heat transfer box and the heat exchange box;

[0007] The heat pipe assembly is at least partially located inside the heat transfer box. The heat pipe assembly includes an inlet main pipe, heat exchange branch pipes and an outlet main pipe. There are multiple heat exchange branch pipes. One end of each heat exchange branch pipe is connected to the inlet main pipe and the other end is connected to the outlet main pipe.

[0008] The heat exchange tubes are at least partially located in the heat exchange chamber, and the heat conduction box contains a heat conduction medium, which allows the heat conduction tube assembly to transfer heat to the heat exchange tubes.

[0009] The flow-stopping component is installed between each heat exchange branch pipe and the main water inlet pipe. The flow-stopping component is used to connect the heat exchange branch pipe and the main water inlet pipe. When there is a leak in the main water inlet pipe or the heat exchange branch pipe, the flow-stopping component is used to open and close the heat exchange branch pipe to achieve flow stoppage.

[0010] By adopting the above technical solution and setting multiple heat exchange branch pipes, a good heat exchange effect can be achieved. On the other hand, when one heat exchange branch pipe leaks, the other heat exchange branch pipes can still operate normally without affecting the normal operation of the oil refining water circulation heat exchanger. By setting up a flow-blocking component, when one heat exchange branch pipe leaks, the flow-blocking component can seal the leaking heat exchange branch pipe, preventing leakage from polluting the external environment. In addition, when the connection between the heat exchange branch pipe and the main water inlet pipe is blocked, the flow-blocking component can move back and forth between the heat exchange branch pipe and the main water inlet pipe to achieve the effect of clearing sludge and preventing blockage.

[0011] Optionally, the flow-blocking assembly includes a flow-blocking element, a protective sleeve, a first waterproof sleeve, and a second waterproof sleeve. The flow-blocking element is located between the main inlet pipe and each heat exchange branch pipe. The protective sleeve is fixedly fitted onto the flow-blocking element. A flow channel is opened inside the flow-blocking element, and the flow channel is connected to the heat exchange branch pipe and the main inlet pipe. One end of the first waterproof sleeve is connected to the heat exchange branch pipe, and the other end is threaded to the protective sleeve. One end of the second waterproof sleeve is connected to the main inlet pipe, and the other end is threaded to the end of the protective sleeve opposite to the first waterproof sleeve, so that the flow-blocking element and the protective sleeve can move between the first waterproof sleeve and the second waterproof sleeve.

[0012] By adopting the above technical solution and setting the first and second waterproof sleeves, when the flow-stopping component is moving, liquid can be prevented from flowing out between the main water inlet pipe and the heat exchange branch pipe as much as possible, thus achieving a protective effect; by setting the protective sleeve, it is convenient to move the flow-stopping component.

[0013] Optionally, each heat exchange branch pipe has a heat exchange channel, and the inlet main pipe is provided with an inlet channel. The intercepting component includes a main body, a first sealing part, and a second sealing part. The first sealing part is connected to the end of the main body near the heat exchange branch pipe, and the second sealing part is connected to the end of the main body near the inlet main pipe. The first sealing part is used to close the heat exchange channel, and the second sealing part is used to close the inlet channel.

[0014] By adopting the above technical solution, by setting a first sealing part and a second sealing part, the heat exchange channel can be closed or opened by the first sealing part being close to or away from the heat exchange channel, and the liquid flow rate can also be adjusted by the first sealing part being close to or away from the heat exchange channel; similarly, the water inlet channel can be closed or opened by the second sealing part being close to or away from the water inlet channel, and the liquid flow rate can also be adjusted by the second sealing part being close to or away from the heat exchange channel.

[0015] Optionally, the heat exchange channel includes a first channel and a second channel that are interconnected. The second channel is closer to the flow cut-off element than the first channel. The diameter of the second channel is larger than that of the first channel, and the diameter of the first channel is the same as that of the first plug. The water inlet channel includes a third channel and a fourth channel that are interconnected. The fourth channel is closer to the flow cut-off element than the third channel. The diameter of the fourth channel is larger than that of the third channel, and the diameter of the third channel is the same as that of the second plug.

[0016] By adopting the above technical solution, since the diameter of the first channel is the same as the diameter of the first sealing part, the flow-blocking element moves towards the first channel until it contacts the heat exchange branch pipe, thus sealing the first channel. Similarly, since the diameter of the third channel is the same as the diameter of the second sealing part, the second sealing part moves towards the third channel until it contacts the main inlet pipe, thus sealing the third channel. In this way, when a leak occurs in the heat exchange branch pipe or the main inlet pipe, it can be sealed in time to cut off the flow, causing the leaking pipe to stop working while other pipes can continue to operate, without affecting the water circulation heat exchange effect.

[0017] Optionally, the diameter of the main body is the same as the diameter of the second and fourth channels.

[0018] By adopting the above technical solution, when a leak occurs in the heat exchange branch pipe, the first sealing part can seal the first channel, and the main body can seal the second channel, which helps to achieve a better sealing effect.

[0019] Optionally, the protective sleeve has a first annular groove and a second annular groove. The first waterproof sleeve is at least partially slidably embedded in the first annular groove, and the second waterproof sleeve is at least partially slidably embedded in the second annular groove. A first elastic element is provided in the first annular groove, with one end of the first elastic element abutting against the inner wall of the first annular groove and the other end abutting against the first waterproof sleeve. A second elastic element is provided in the second annular groove, with one end of the second elastic element abutting against the inner wall of the second annular groove and the other end abutting against the second waterproof sleeve.

[0020] By adopting the above technical solution and by setting the first elastic element and the second elastic element, when the protective sleeve and the intercepting element are moved, collisions between the protective sleeve and the first waterproof sleeve and the second waterproof sleeve can be avoided as much as possible, thus playing a buffering and protective role.

[0021] Optionally, the flow interception assembly also includes a first protective sleeve and a second protective sleeve. The first protective sleeve is fitted onto the heat exchange branch pipe and has a first groove and a second groove inside. A first waterproof sleeve is fitted into the first groove and engages with the inner wall of the first groove, and one end of the protective sleeve is located in the second groove. The second protective sleeve is fitted onto the main water inlet pipe and has a third groove and a fourth groove inside. A second waterproof sleeve is fitted into the third groove and engages with the inner wall of the third groove, and the other end of the protective sleeve is located in the fourth groove.

[0022] By adopting the above technical solution, and by setting a first protective sleeve and a second protective sleeve, the first protective sleeve simultaneously covers at least a portion of the heat exchange branch pipe, the first waterproof sleeve, and the protective sleeve, and the second protective sleeve simultaneously covers at least a portion of the water inlet main pipe, the second waterproof sleeve, and the protective sleeve, thereby further preventing leakage at the connection between the water inlet main pipe and the heat exchange branch pipe, so as to achieve a better sealing effect.

[0023] Optionally, a gap is provided between the first protective sleeve and the second protective sleeve, and a rotating ring is provided on the outer wall of the protective sleeve opposite to the interceptor, with the rotating ring disposed within the gap.

[0024] By adopting the above technical solution and setting a rotating ring, it is easy to rotate the protective sleeve and the flow cut-off element, thereby facilitating the movement of the flow cut-off element between the heat exchange branch pipe and the main water inlet pipe.

[0025] Optionally, the flow interceptor also includes a first transition section and a second transition section that are interconnected. The first transition section is connected between the main body and the first blocking section, and the second transition section is connected between the main body and the second blocking section. The flow channel includes a main flow channel, a first branch flow channel and a second branch flow channel. The main flow channel is opened in the main body, the first branch flow channel is opened in the first transition section, and the second branch flow channel is opened in the second transition section.

[0026] By adopting the above technical solution, and by setting a first transition section and a second transition section, the first transition section connects the first sealing section and the main body, and the second transition section connects the second sealing section and the main body. When a leak occurs in the pipeline, when the first sealing section is used for sealing, the first transition section can contact the inner wall of the heat exchange channel to achieve a good sealing effect, thereby achieving a good sealing effect; when the second sealing section is used for sealing, the second transition section can contact the inner wall of the water inlet channel to achieve a good sealing effect, thereby achieving a good sealing effect.

[0027] Optionally, the first sealing part is provided with a first protrusion at the end facing the heat exchange branch pipe, and the second sealing part is provided with a first protrusion at the end facing the main water inlet pipe. Both the first protrusion and the second protrusion are conical.

[0028] By adopting the above technical solution, when the pipeline is blocked, a better cleaning effect can be achieved by moving the interceptor and contacting the sludge through the first and second protrusions.

[0029] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0030] 1. By setting up a flow-blocking component, when one of the heat exchange branch pipes leaks, the flow-blocking component can seal the leaking heat exchange branch pipe, preventing the leakage from polluting the external environment;

[0031] 2. By setting up multiple heat exchange branch pipes, a good heat exchange effect can be achieved on the one hand, and on the other hand, when one heat exchange branch pipe leaks, the other heat exchange branch pipes can work normally without affecting the normal operation of the oil refining water circulation heat exchanger.

[0032] 3. When blockage occurs at the connection between the heat exchange branch pipe and the main water inlet pipe, the flow-blocking component can be moved back and forth between the heat exchange branch pipe and the main water inlet pipe to achieve the effect of clearing blockage and preventing blockage. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the oil refining water circulation heat exchanger in the embodiments of this application.

[0034] Figure 2 This is an internal cross-sectional view of the oil refining water circulation heat exchanger in the embodiments of this application.

[0035] Figure 3 This is an internal cross-sectional view of the interception component in an embodiment of this application.

[0036] Figure 4 This is a schematic diagram of the interceptor and protective sleeve in the embodiments of this application.

[0037] Figure 5 This is a schematic diagram of the interceptor in the embodiments of this application.

[0038] Figure 6 This is a schematic diagram of the structure of the first protective sleeve or the second protective sleeve in the embodiments of this application.

[0039] In the picture:

[0040] 1. Heat exchanger; 2. Heat transfer box; 3. Heat exchange chamber; 4. Heat transfer tube assembly; 41. Main water inlet pipe; 411. Water inlet channel; 412. Third channel; 413. Fourth channel; 42. Heat exchange branch pipe; 421. Heat exchange channel; 422. First channel; 423. Second channel; 43. Main water outlet pipe; 5. Heat exchange tube; 6. Flow interception assembly; 61. Flow interception component; 610. Flow channel; 601. Main flow channel; 602. First branch flow channel; 603. Second branch flow channel; 611. Main body; 612. 613. First sealing part; 614. Second sealing part; 615. First protrusion; 616. Second protrusion; 62. Protective sleeve; 621. First annular groove; 622. Second annular groove; 623. First elastic element; 624. Second elastic element; 63. First waterproof sleeve; 64. Second waterproof sleeve; 65. First protective sleeve; 651. First groove; 652. Second groove; 66. Second protective sleeve; 661. Third groove; 662. Fourth groove; 67. Rotating ring; 68. First transition part; 69. Second transition part. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0043] This application provides a refinery water circulation heat exchanger, with reference to... Figure 1 and Figure 2 The oil refining water circulating heat exchanger includes a heat exchange box 1 and a heat transfer box 2. The heat transfer box 2 is located inside the heat exchange box 1, and a heat exchange cavity 3 is provided between the heat transfer box 2 and the heat exchange box 1. The oil refining water circulating heat exchanger also includes a heat transfer tube assembly 4 and heat exchange tubes 5. The heat exchange tubes 5 are located inside the heat exchange cavity 3. The heat transfer box 2 is filled with a heat transfer medium. The high-temperature waste liquid transfers heat to the heat transfer tube assembly 4, and then the heat transfer medium transfers the heat from the heat transfer tube assembly 4 to the heat exchange tubes 5. The heat exchange tubes 5 then transfer heat to the liquid inside the tubes to achieve heat exchange.

[0044] It is understood that in this embodiment, the heat exchange tubes 5 are arranged in a spiral shape within the heat exchange cavity 3, thereby increasing the contact area with the heat transfer box 2 and extending the flow path of the liquid within the heat transfer box, thus achieving a better heat exchange effect. In other embodiments, the heat exchange tubes 5 may also be arranged in other forms, which are not limited here.

[0045] In this embodiment, the heat pipe assembly 4 is at least partially located inside the heat conduction box 2. The heat pipe assembly 4 includes a main water inlet pipe 41, heat exchange branch pipes 42, and a main water outlet pipe 43. One end of the main water inlet pipe 41 and the main water outlet pipe 43 are located outside the heat conduction box 2. There are multiple heat exchange branch pipes 42. One end of each heat exchange branch pipe 42 is connected to the main water inlet pipe 41, and the other end passes through the heat conduction box 2 and is connected to the main water outlet pipe 43.

[0046] Similarly, in this embodiment, each heat exchange branch pipe 42 is arranged in a spiral within the heat transfer box 2 to extend the flow path of the high-temperature liquid within the heat exchange box 1, thereby achieving a better heat exchange effect. It is easy to understand that in this embodiment, each heat exchange branch pipe 42 can be arranged in a spiral, with multiple heat exchange branch pipes 42 stacked together.

[0047] In addition, refer to Figure 1and Figure 2 The oil refining water circulation heat exchanger also includes a flow-blocking component 6, which is located between each heat exchange branch pipe 42 and the main water inlet pipe 41. The flow-blocking component 6 is used to connect the heat exchange branch pipe 42 and the main water inlet pipe 41. When a leak occurs between the main water inlet pipe 41 and the heat exchange branch pipe 42, the flow-blocking component 6 is used to open and close the heat exchange branch pipe 42 to achieve flow blocking.

[0048] By setting up multiple heat exchange branch pipes 42 and installing a flow-blocking component 6 between each heat exchange branch pipe 42 and the main inlet pipe 41, when a leak occurs in a heat exchange branch pipe 42, the flow-blocking component 6 can close the single heat exchange branch pipe 42, thus blocking the flow in that single heat exchange branch pipe 42 without affecting the use of other heat exchange branch pipes 42, ensuring the normal operation of the water circulation heat exchanger. Furthermore, the flow-blocking component 6, by moving between the heat exchange branch pipe 42 and the main inlet pipe 41, achieves a good anti-clogging effect.

[0049] Specifically, refer to Figure 3 and Figure 4 In this embodiment, the flow-blocking assembly 6 includes a flow-blocking element 61, a protective sleeve 62, a first waterproof sleeve 63, and a second waterproof sleeve 64. The flow-blocking element 61 is disposed between the main inlet pipe 41 and each heat exchange branch pipe 42. The protective sleeve 62 is fixedly sleeved on the outer periphery of the flow-blocking element 61, with one end connected to the first waterproof sleeve 63 and the other end connected to the second waterproof sleeve 64. A flow channel 610 is provided inside the flow-blocking element 61, and the flow channel 610 is connected to the heat exchange branch pipe 42 and the main inlet pipe 41. Specifically, each heat exchange branch pipe 42 has a heat exchange channel 421, and the main inlet pipe 41 is provided with an inlet channel 411. One end of the flow channel 610 is connected to the heat exchange branch pipe 42, and the other end is connected to the main inlet pipe 41.

[0050] High-temperature wastewater enters the flow channel 610 from the inlet channel 411 of the main inlet pipe 41, and then enters the heat exchange channel 421 of the heat exchange branch pipe 42. The heat of the high-temperature wastewater is transferred to the liquid in the heat exchange tube 5 through the heat transfer medium in the heat exchange branch pipe 42, so as to make full use of the heat and realize resource reuse.

[0051] Specifically, refer to Figures 3 to 5The flow-blocking component 61 includes a main body 611, a first sealing part 612, and a second sealing part 613. The first sealing part 612 is connected to the end of the main body 611 near the heat exchange branch pipe 42, and the second sealing part 613 is connected to the end of the main body 611 near the inlet main pipe 41. The first sealing part 612 is used to close the heat exchange channel 421, and the second sealing part 613 is used to close the inlet channel 411. One end of the first waterproof sleeve 63 is connected to the heat exchange branch pipe 42, and the other end is threaded to the protective sleeve 62. One end of the second waterproof sleeve 64 is connected to the inlet main pipe 41, and the other end is threaded to the end of the protective sleeve 62 away from the first waterproof sleeve 63, so that the flow-blocking component 61 and the protective sleeve 62 can move between the first waterproof sleeve 63 and the second waterproof sleeve 64.

[0052] It is understood that in other embodiments, the first blocking part 612 and the second blocking part 613 may be hemispherical, and the first blocking part 612 and the second blocking part 613 may also be conical or other irregular shapes, which are not limited here.

[0053] Since the protective sleeve 62 is threadedly connected to the first waterproof sleeve 63 and the second waterproof sleeve 64 respectively, rotating the protective sleeve 62 can drive the flow-blocking member 61 to move between the heat exchange branch pipe 42 and the main water inlet pipe 41. When the first sealing part 612 of the flow-blocking member 61 enters the heat exchange channel 421, it seals the heat exchange channel 421. When the second sealing part 613 of the flow-blocking member 61 enters the water inlet channel 411, it seals the water inlet channel 411, which is convenient for operation. At the same time, when the water inlet channel 411 and the heat exchange channel 421 are blocked, the repeated movement of the flow-blocking member 61 between the main water inlet pipe 41 and the heat exchange branch pipe 42 can unclog the pipes, so as to avoid blockage between the main water inlet pipe 41 and the heat exchange branch pipe 42 as much as possible.

[0054] Reference Figures 3 to 5 The heat exchange channel 421 includes a first channel 422 and a second channel 423 that are interconnected. The second channel 423 is closer to the flow-blocking member 61 than the first channel 422. The diameter of the second channel 423 is larger than that of the first channel 422. The diameter of the first channel 422 is the same as that of the first sealing part 612. The water inlet channel 411 includes a third channel 412 and a fourth channel 413 that are interconnected. The fourth channel 413 is closer to the flow-blocking member 61 than the third channel 412. The diameter of the fourth channel 413 is larger than that of the third channel 412. The diameter of the third channel 412 is the same as that of the second sealing part 613.

[0055] Since the diameter of the first channel 422 is the same as the diameter of the first sealing part 612, the flow-blocking element 61 moves towards the first channel 422 until it contacts the heat exchange branch pipe 42, thus sealing the first channel 422. Similarly, since the diameter of the third channel 412 is the same as the diameter of the second sealing part 613, the second sealing part 613 moves towards the third channel 412 until the flow-blocking element 61 contacts the inlet main pipe 41, thus sealing the third channel 412. In this way, when a leak occurs in the heat exchange branch pipe 42 or the inlet main pipe 41, it can be sealed in time to achieve flow control, causing the leaking pipe to stop working while other pipes can continue to work, without affecting the water circulation heat exchange effect.

[0056] Furthermore, the diameter of the main body 611 is the same as the diameter of the second channel 423 and the fourth channel 413. When a leak occurs in the heat exchange branch pipe 42, the first channel 422 is sealed by the first sealing part 612, and at the same time, the main body 611 can seal the second channel 423, which helps to achieve a better sealing effect.

[0057] In this embodiment, refer to Figure 3 and Figure 4 The protective sleeve 62 has a first annular groove 621 at one end facing the first waterproof sleeve 63 and a second annular groove 622 at one end facing the second waterproof sleeve 64. The first waterproof sleeve 63 is slidably embedded in the first annular groove 621 and the second waterproof sleeve 64 is slidably embedded in the second annular groove 622. A first elastic element 623 is provided in the first annular groove 621. One end of the first elastic element 623 abuts against the inner wall of the first annular groove 621 and the other end abuts against the first waterproof sleeve 63. A second elastic element 624 is provided in the second annular groove 622. One end of the second elastic element 624 abuts against the inner wall of the second annular groove 622 and the other end abuts against the second waterproof sleeve 64.

[0058] It is easy to understand that in this embodiment, both the first elastic element 623 and the second elastic element 624 are springs. In other embodiments, the first elastic element 623 and the second elastic element 624 may also be rubber sleeves, etc., and are not limited here. By setting the first elastic element 623 and the second elastic element 624, when the protective sleeve 62 and the interceptor 61 are moved, collisions between the protective sleeve 62 and the first waterproof sleeve 63 and the second waterproof sleeve 64 can be avoided as much as possible, thus playing a buffering and protective role.

[0059] For further details, please refer to [link / reference]. Figure 3 and Figure 6In some embodiments, the flow-blocking component 61 further includes a first protective sleeve 65 and a second protective sleeve 66. The first protective sleeve 65 is fitted onto the heat exchange branch pipe 42, and has a first groove 651 and a second groove 652 inside. A first waterproof sleeve 63 is disposed inside the first groove 651 and engages with the inner wall of the first groove 651. One end of the protective sleeve 62 is disposed inside the second groove 652. The second protective sleeve 66 is fitted onto the main water inlet pipe 41, and has a third groove 661 and a fourth groove 662 inside. A second waterproof sleeve 64 is fitted into the third groove 661 and engages with the inner wall of the third groove 661. The other end of the protective sleeve 62 is disposed inside the fourth groove 662. There is a movement gap between the protective sleeve 62 and the inner wall of the second groove 652 to facilitate the movement of the flow-blocking component 61.

[0060] By setting a first protective sleeve 65 and a second protective sleeve 66, the first protective sleeve 65 simultaneously covers at least a portion of the heat exchange branch pipe 42, the first waterproof sleeve 63 and the protective sleeve 62, and the second protective sleeve 66 simultaneously covers at least a portion of the water inlet main pipe 41, the second waterproof sleeve 64 and the protective sleeve 62, thereby further preventing leakage at the connection between the water inlet main pipe 41 and the heat exchange branch pipe 42, so as to achieve a better sealing effect.

[0061] A gap is provided between the first protective sleeve 65 and the second protective sleeve 66. A rotating ring 67 is fixed on the outer wall of the protective sleeve 62 away from the flow interceptor 61, and the rotating ring 67 is disposed within the gap. By providing the rotating ring 67, it is convenient to rotate the protective sleeve 62 and the flow interceptor 61, thereby facilitating the movement of the flow interceptor 61 between the heat exchange branch pipe 42 and the water inlet main pipe 41.

[0062] Reference Figure 5 The flow interceptor 61 also includes a first transition section 68 and a second transition section 69 that are interconnected. The first transition section 68 connects the main body 611 and the first blocking section 612, and the second transition section 69 connects the main body 611 and the second blocking section 613. The first transition section 68, the second transition section 69, the first anti-blocking section 612, the main body 611, and the second anti-blocking section 612 are separated by a dotted line in the diagram, which is only for illustration. The flow channel 610 includes a main flow channel 601, a first branch flow channel 602, and a second branch flow channel 603. The main flow channel 601 is located within the main body 611, the first branch flow channel 602 is located in the first transition section 68, and the second branch flow channel 603 is located in the second transition section 69. It can be understood that in this embodiment, the first branch flow channel 602 and the second branch flow channel 603 are each provided in two sections to ensure the flow rate of the liquid. In other embodiments, the first branch channel 602 and the second branch channel 603 may each be provided with multiple sections or a single section, which is not limited here.

[0063] In some embodiments, the first sealing part 612 is provided with a first protrusion 614 at one end facing the heat exchange branch pipe 42, and the second sealing part 613 is provided with a second protrusion 615 at one end facing the water inlet main pipe 41. Both the first protrusion 614 and the second protrusion 615 are conical.

[0064] By providing a first protrusion 614 on the first sealing portion 612 and a second protrusion 615 on the second sealing portion 613, when the pipe becomes blocked, the flow-stopping member 61 can be moved, allowing the first protrusion 614 and the second protrusion 615 to contact the sludge, thus achieving a better cleaning effect. It is understood that in other embodiments, the first protrusion 614 and the second protrusion 615 may also be needle-shaped or other shapes, which are not limited here.

[0065] In some embodiments, sealing rings may be provided on the first sealing portion 612 and the second sealing portion 613, or on the inner walls of the first annular groove 621 and the second annular groove 622. Sealing rings may also be provided on the inner walls of the second groove 652 and the fourth groove 662. Sealing rings may also be provided on any one or more of the first sealing portion 612 and the second sealing portion 613, the first annular groove 621 and the second annular groove 622, or the first annular groove 621 and the second annular groove 622. No limitation is imposed here.

[0066] The working principle of this application is as follows: High-temperature wastewater enters each inlet branch pipe from the main inlet pipe 41, and the liquid to be heated enters the heat exchange tube 5. The high-temperature wastewater transfers heat to the heat transfer medium, which then transfers heat to the liquid in the heat exchange tube 5 to achieve heat exchange. Since the heat transfer tube group 4 contains high-temperature wastewater, if the heat transfer tube group 4 leaks, it will pollute the external environment. The oil refining water circulation heat exchanger provided in this application, when a leak occurs in the heat exchange branch pipe 42 or the main inlet pipe 41, rotates the rotating ring 67. The rotating ring 67 drives the protective sleeve 62 and the flow-blocking element 61 to move towards or away from the heat exchange branch pipe 42. When the flow-blocking element 61 moves towards the heat exchange branch pipe 42, the first sealing part 612 blocks the first channel 422, and the main body part 611 blocks the second channel 423 to achieve flow interception. When the heat pipe assembly 4 is operating normally, the high-temperature wastewater flows sequentially through the third channel 412, the fourth channel 413, the second branch channel 603, the main channel 601, the first branch channel 602, the second channel 423, and the first channel 422. During the flow of wastewater, the first waterproof sleeve 63 and the second waterproof sleeve 64 provide waterproof protection for the heat exchange branch pipe 42 and the main water inlet pipe 41, while the first protective sleeve 65 and the second protective sleeve 66 provide a second layer of waterproof protection to achieve a good leak-proof effect.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water-refining heat exchanger, characterized in that, include: A heat exchange box (1) and a heat transfer box (2), wherein the heat transfer box (2) is located inside the heat exchange box (1), and a heat exchange cavity (3) is provided between the heat transfer box (2) and the heat exchange box (1); A heat pipe assembly (4) is at least partially located inside the heat-conducting box (2). The heat pipe assembly (4) includes an inlet main pipe (41), heat exchange branch pipes (42), and an outlet main pipe (43). There are multiple heat exchange branch pipes (42). One end of each heat exchange branch pipe (42) is connected to the inlet main pipe (41), and the other end is connected to the outlet main pipe (43). The heat exchange tube (5) is at least partially disposed in the heat exchange cavity (3), and the heat conduction box (2) is provided with a heat conduction medium, so that the heat conduction tube group (4) transfers heat to the heat exchange tube (5); A flow-blocking component (6) is disposed between each of the heat exchange branch pipes (42) and the main water inlet pipe (41). The flow-blocking component (6) is used to connect the heat exchange branch pipes (42) and the main water inlet pipe (41). When the main water inlet pipe (41) and the heat exchange branch pipes (42) leak, the flow-blocking component (6) is used to open and close the heat exchange branch pipes (42) to achieve flow blocking. The flow-blocking assembly (6) includes a flow-blocking component (61), a protective sleeve (62), a first waterproof sleeve (63), and a second waterproof sleeve (64). The flow-blocking component (61) is disposed between the main water inlet pipe (41) and each of the heat exchange branch pipes (42). The protective sleeve (62) is fixedly sleeved on the flow-blocking component (61). A flow channel (610) is opened inside the flow-blocking component (61), and the flow channel (610) is connected to the heat exchange branch pipes (42) and the main water inlet pipe (41). The first waterproof sleeve (63) is connected at one end to the heat exchange branch pipe (42) and at the other end to the protective sleeve (62) by a thread. The second waterproof sleeve (64) is connected at one end to the water inlet main pipe (41) and at the other end to the protective sleeve (62) away from the first waterproof sleeve (63) by a thread, so that the flow cut-off element (61) and the protective sleeve (62) can move between the first waterproof sleeve (63) and the second waterproof sleeve (64). The flow interception assembly (6) further includes a first protective sleeve (65) and a second protective sleeve (66). The first protective sleeve (65) is fitted onto the heat exchange branch pipe (42). The first protective sleeve (65) has a first groove (651) and a second groove (652) inside. The first waterproof sleeve (63) is located in the first groove (651) and is engaged with the inner wall of the first groove (651). One end of the protective sleeve (62) is located in the second groove (652). The second protective sleeve (66) is fitted onto the main water inlet pipe (41). The second protective sleeve (66) has a third groove (661) and a fourth groove (662) inside. The second waterproof sleeve (64) is fitted into the third groove (661) and is engaged with the inner wall of the third groove (661). The other end of the protective sleeve (62) is located in the fourth groove (662).

2. The oil refining water circulation heat exchanger according to claim 1, characterized in that: Each heat exchange branch pipe (42) has a heat exchange channel (421), and the main water inlet pipe (41) is provided with a water inlet channel (411). The flow cut-off component (61) includes a main body (611), a first sealing part (612), and a second sealing part (613). The first sealing part (612) is connected to the end of the main body (611) near the heat exchange branch pipe (42), and the second sealing part (613) is connected to the end of the main body (611) near the main water inlet pipe (41). The first sealing part (612) is used to close the heat exchange channel (421), and the second sealing part (613) is used to close the water inlet channel (411).

3. The oil refining water circulation heat exchanger according to claim 2, characterized in that: The heat exchange channel (421) includes a first channel (422) and a second channel (423) that are interconnected. The second channel (423) is closer to the flow cut-off member (61) relative to the first channel (422). The diameter of the second channel (423) is larger than that of the first channel (422), and the diameter of the first channel (422) is the same as that of the first blocking part (612). The water inlet channel (411) includes a third channel (412) and a fourth channel (413) that are interconnected. The fourth channel (413) is closer to the flow cut-off member (61) relative to the third channel (412). The diameter of the fourth channel (413) is larger than that of the third channel (412), and the diameter of the third channel (412) is the same as that of the second blocking part (613).

4. The oil refining water circulation heat exchanger according to claim 3, characterized in that: The diameter of the main body (611) is the same as the diameter of the second channel (423) and the fourth channel (413).

5. The oil refining water circulation heat exchanger according to claim 1, characterized in that: The protective sleeve (62) has a first annular groove (621) and a second annular groove (622) inside. The first waterproof sleeve (63) is at least partially threaded to the first annular groove (621), and the second waterproof sleeve (64) is at least partially threaded to the second annular groove (622). A first elastic element (623) is provided in the first annular groove (621). One end of the first elastic element (623) abuts against the inner wall of the first annular groove (621), and the other end abuts against the first waterproof sleeve (63). A second elastic element (624) is provided in the second annular groove (622). One end of the second elastic element (624) abuts against the inner wall of the second annular groove (622), and the other end abuts against the second waterproof sleeve (64).

6. The oil refining water circulation heat exchanger according to claim 1, characterized in that: A gap is provided between the first protective sleeve (65) and the second protective sleeve (66). A rotating ring (67) is provided on the outer wall of the protective sleeve (62) away from the interceptor (61), and the rotating ring (67) is disposed in the gap.

7. A refining water circulation heat exchanger according to claim 2, characterized in that: The flow interceptor (61) further includes a first transition section (68) and a second transition section (69) that are interconnected. The first transition section (68) is connected between the main body (611) and the first blocking section (612), and the second transition section (69) is connected between the main body (611) and the second blocking section (613). The flow channel (610) includes a main flow channel (601), a first branch flow channel (602), and a second branch flow channel (603). The main flow channel (601) is located within the main body (611), the first branch flow channel (602) is located in the first transition section (68), and the second branch flow channel (603) is located in the second transition section (69).

8. A refining water circulation heat exchanger according to claim 2, characterized in that: The first sealing part (612) is provided with a first protrusion (614) at one end facing the heat exchange branch pipe (42), and the second sealing part (613) is provided with a second protrusion (615) at one end facing the water inlet main pipe (41). Both the first protrusion (614) and the second protrusion (615) are conical.

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