A shell and tube heat exchanger capable of improving heat exchange efficiency

Abstract

The present invention discloses a shell and tube heat exchanger capable of improving heat exchange efficiency, including a shell, wherein the top inner wall and the bottom inner wall of one side of the shell are respectively provided with a hot fluid inlet pipe and a cold fluid outlet pipe, and the top inner wall and the bottom inner wall of the opposite side of the shell are respectively provided with a cold fluid inlet pipe and a hot fluid outlet pipe, the top inner wall of the shell is provided with an oscillation mechanism, and the bottom inner wall of the shell is provided with a drainage mechanism, and one inner wall of the shell is provided with a drainage mechanism, and the drainage mechanism and the cold fluid inlet pipe are located on the same side, and two tube sheets are simultaneously fitted on the inner wall of the shell, and a heat transfer tube bundle is simultaneously connected between the two tube sheets. The shell and tube heat exchanger capable of improving heat exchange efficiency disclosed by the present invention can complete the drainage of hot fluid retention liquid to avoid scaling caused by too long retention time, reduce the frequency of cleaning the outer wall of the heat transfer tube bundle, and at the same time cause the hot fluid to oscillate during the flow process, thereby improving heat transfer efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of shell and tube heat exchangers, and in particular to a shell and tube heat exchanger capable of improving heat exchange efficiency. Background Art

[0002] The tubular exchanger is the most widely used heat exchanger in chemical and alcohol production. It primarily consists of a shell, tubesheet, heat exchange tubes, headers, and baffles. Materials available include ordinary carbon steel, copper, or stainless steel. During heat exchange, one fluid enters through the header's connecting tube, flows through the tubes, and exits through the outlet pipe at the other end of the header. This is called the tube side. The other fluid enters through a nozzle on the shell and exits through another nozzle on the shell. This is called the shell side.

[0003] The staggered arrangement of baffles blocks the bottom of the shell. When the heat fluid stops flowing, it accumulates at the bottom of the heat exchange tubes. The longer the accumulation time, the more likely impurities in the heat fluid will form scale on the outer walls of the heat exchange tubes and the inner walls of the shell. Scaling directly affects heat exchange efficiency and requires more frequent cleaning. Summary of the Invention

[0004] The present invention discloses a shell-and-tube heat exchanger capable of improving heat exchange efficiency, aiming to solve the technical problem that when the input of hot fluid stops, it will cause accumulation and retention at the bottom end of the heat exchange tube. The longer the retention time, the more likely the impurities in the hot fluid will scale on the outer wall of the heat exchange tube and the inner wall of the shell.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A shell-and-tube heat exchanger capable of improving heat exchange efficiency comprises a shell, wherein a hot fluid inlet pipe and a cold fluid outlet pipe are respectively provided on the top inner wall and the bottom inner wall of one side of the shell, and a cold fluid inlet pipe and a hot fluid outlet pipe are respectively provided on the top inner wall and the bottom inner wall of the opposite side of the shell, an oscillation mechanism is provided on the top inner wall of the shell, a drainage mechanism is provided on the bottom inner wall of the shell, a drainage mechanism is provided on one inner wall of the shell, and the drainage mechanism and the cold fluid inlet pipe are located on the same side, two tube sheets are simultaneously provided on the inner wall of the shell, and a heat transfer tube bundle is simultaneously connected between the two tube sheets, the hot fluid inlet pipe and the hot fluid outlet pipe are located between the two tube sheets, a plurality of baffles are equidistantly and staggeredly provided outside the heat transfer tube bundle, and a plurality of base frames are fixedly connected to the bottom end of the shell;

[0007] The drainage mechanism includes a support bin fixed to the inner wall of the bottom end of the shell, a rotating bin is movably connected in the support bin, one end of the rotating bin is fixedly connected to a support shaft 1, and the support shaft 1 passes through the support bin and is connected to a gear 2, the gear 2 is meshed with a gear 1, and one side of the gear 1 is connected to a motor 2, a drainage port is provided on one side of the rotating bin, two inclined plates are fixedly connected in the rotating bin, and the two inclined plates are respectively located on both sides of the drainage port, a connecting pipe is fixedly connected to the inner wall of the other end of the rotating bin, and the connecting pipe is collinear with the rotating axis of the rotating bin, and the connecting pipe passes through the support bin and extends into the hot fluid The outlet pipe is provided with an inclined surface 1 inclined in the direction in which the hot fluid outlet pipe is provided, and the inner side of the connecting pipe is provided with a plurality of groups of multi-way pipes in the gap between the rotating bin and the inclined plate, and the input end and the output end of each group of multi-way pipes pass through the inner wall of the rotating bin in the same direction at the same time, and the output end of each group of the multi-way pipes is respectively provided with a high-pressure nozzle, and the connection between the input end and the output end of each group of the multi-way pipes is respectively provided with a water pump, and the bottom ends of the plurality of the baffles located below are respectively provided with sealing plates 2, and the bottom end of the tube plate is provided with sealing plate 1, and the outer walls of the bottom ends of the sealing plates 1 and 2 are movably fitted to the outer wall of the rotating bin;

[0008] A through groove is provided at the connection between the housing and the support bin, the second motor is fixed to the outside of the second bearing frame, and the output end of the second motor passes through the second bearing frame and is connected to the first gear. A bearing is embedded in the inner wall of one side of the support bin, and the other side of the first gear is connected to the bearing.

[0009] One side of the support bin and the hot fluid outlet pipe is penetrated by a second perforation, and the connecting pipe is located in the second perforation and is tightly connected to the inner wall of the second perforation. One side of the rotating bin is penetrated by multiple first perforations, and the input ends and output ends of the multiple multi-way tubes are respectively embedded in the multiple first perforations, and the cut ends of the input ends and output ends of the multi-way tubes are consistent with the outer wall of the rotating bin.

[0010] By providing a drainage mechanism, the second motor in the drainage mechanism can simultaneously drive the rotating bin to rotate in contact with the inner wall of the supporting bin to change the setting position of the drainage port. When the drainage port is located at the top, the hot fluid remaining at the bottom of the shell can be guided and discharged into the hot fluid outlet pipe through the connecting pipe, completing the drainage of the hot fluid retention liquid to avoid scaling caused by too long a retention time and reduce the frequency of cleaning the outer wall of the heat transfer tube bundle. In addition, when the drainage port is located directly below the rotating bin, the hot fluid can be sucked in by the input end of the multi-way pipe, and then guided by the water pump and sprayed out by the high-pressure nozzle. It acts on the hot fluid from the bottom, causing the hot fluid to oscillate during the flow process. Through vibration, the uniformity of the temperature distribution is broken, the temperature difference is increased, and the heat transfer efficiency is improved.

[0011] In a preferred embodiment, the oscillation mechanism includes a groove provided on the inner wall of the top end of the housing, a plurality of rotating brackets are equidistantly provided at the top end of the groove, a magnet 1 is laterally mounted at the bottom end of the rotating bracket, and a synchronous wheel set is fixedly connected to the top end of the rotating bracket;

[0012] A synchronous belt is sleeved on two adjacent synchronous wheel groups at the same time, and the top of one of the synchronous wheel groups is connected to motor 1, the top of the shell is fixedly connected to a heat insulation bin, and the synchronous wheel group and the rotating bracket are both located in the heat insulation bin, the motor 1 is installed at the top of the heat insulation bin, and the output end of the motor 1 passes through the heat insulation bin and is connected to the synchronous wheel group;

[0013] The inner wall of the groove is provided with a plurality of bearing frames 1 at equal intervals, and each synchronous wheel set is connected to the bearing frame 1 respectively, and each magnet 1 is adsorbed with a magnet 2 across the groove;

[0014] The plurality of magnets 2 are respectively located between two adjacent baffles, the bottom ends of the magnets 2 are fixedly connected to a cross bracket, and the bottom end of the cross bracket is provided with a plurality of convex rods distributed at equal intervals.

[0015] By providing an oscillation mechanism, in the oscillation mechanism, each magnet located at the bottom of the rotating bracket can be driven to rotate by a motor, thereby driving multiple cross brackets located at the bottom of the groove to rotate through the groove, and the hot fluid at the top in the flow process is stirred by the setting of the convex rod. The oscillation generated during the stirring process can synchronously break the uniformity of the temperature distribution, increase the temperature difference, and thus accelerate heat transfer. It can be assisted by the drainage mechanism to synchronously act on the hot fluid flowing at the top and bottom, thereby further improving the heat exchange efficiency.

[0016] In a preferred embodiment, the drainage mechanism includes a scraper 1 and a scraper 2, and the top of each scraper 1 and scraper 2 is respectively provided with an inclined surface 2 inclined toward the position of the heat transfer tube bundle. One side of the scraper 1 is fixedly connected to a support tube 3, and one end of the support tube 3 is sequentially fixedly connected to the support tube 2, the gear 3 and the extension tube, and a plurality of ridges are arranged around the outside of the extension tube. One side of the scraper 2 is simultaneously fixedly connected to a support shaft 2 and the support tube 1, and one side of the support shaft 2 is fixedly connected to the support shaft 3, and the support shaft 3 passes through the support tube 1 and one side of the housing and is connected to the motor 3. The support tube 2, the gear 3 and the extension tube are simultaneously sleeved on the support shaft 3, and a portion of the support tube 2 is sleeved between the support shaft 3 and the support tube 1.

[0017] A C-shaped support plate is fixedly connected to the support shaft three, and the C-shaped support plate is located on the outside of the shell. An electric clamp is installed on the inner wall of one side of the C-shaped support plate, and the electric clamp is connected to a battery. The battery of the electric clamp is also arranged on the outside of the shell. The electric clamp is clamped outside the extension tube. Sliders are fixedly connected to the opposite sides of the C-shaped support plate respectively. An annular limiting groove is fixedly connected to the outer wall of one end of the shell, and the slide is movably engaged in the annular limiting groove. A bearing frame three is fixedly connected to the outer wall of the same end of the shell, and the support shaft three passes through and is rotatably connected to the bearing frame three.

[0018] The motor three is installed outside the bearing frame three, and the C-shaped support plate is located on the inner side of the bearing frame three. The outer wall of the gear three is movably engaged with a rack, and the outer wall of the bottom end of the rack is provided with multiple limit sliders. The C-shaped support plate is also installed with a hydraulic rod and a limit slide rod. Multiple limit slides are simultaneously sleeved on the limit slide rod. One side outer wall of the rack is fixedly connected to a side support plate, and the output end of the hydraulic rod is connected to the side support plate.

[0019] By providing a drainage mechanism, when the injection of cold fluid stops, the hydraulic rod is activated to extend, causing the outer side of scraper 1 to simultaneously rotate against the tube sheet and the inner wall of the shell. While scraper 2 remains fixed, scraper 1 rotates to form an integral relative plane with scraper 2. The electric clamp is electrically connected to the battery and then clamps the outer side of the extended tube to fix the position of scraper 1. At this time, the lower part of inclined surface 2 faces the direction of the tube sheet. Then, motor 3 drives scraper 1 and scraper 2 to rotate, so that they can contact the inner wall of the shell to transfer residual cold fluid and push the cold fluid upward until it enters the corresponding heat transfer tube bundle to avoid cold fluid stagnation and scaling. Correspondingly, the hydraulic rod is retracted to retract scraper 1 to contact the bottom of scraper 2, minimizing the angle between the two and preventing the extended scraper structure from partially blocking the connection path between the cold fluid inlet pipe and the heat transfer tube bundle. This ensures that the cold fluid can evenly enter the heat transfer tube bundle, thereby ensuring the utilization rate of the heat transfer tube bundle.

[0020] The heat dissipation device of claim 1, wherein the cooling fan is mounted on an upper surface of the heat dissipation device and the cooling fan is mounted on an upper surface of the heat dissipation device. The cooling fan is mounted on an upper surface of the heat dissipation device. The cooling fan is mounted on an upper surface of the heat dissipation device. The support bin is connected to gear 2, which is meshed with gear 1, and one side of gear 1 is connected to motor 2. A drain port is provided on one side of the rotating bin. Two inclined plates are fixedly connected to the rotating bin, and the two inclined plates are respectively located on both sides of the drain port. A connecting pipe is fixedly connected to the inner wall of the other end of the rotating bin, and the connecting pipe is colinear with the rotating axis of the rotating bin. The connecting pipe passes through the support bin and extends into the hot fluid outlet pipe, and the inner side of the connecting pipe is provided with an inclined surface inclined in the direction in which the hot fluid outlet pipe is set. , multiple groups of multi-way tubes are provided in the gap between the rotating bin and the inclined plate, and the input and output ends of each group of multi-way tubes pass through the inner wall of the rotating bin in the same direction at the same time, the output end of each group of multi-way tubes is respectively provided with a high-pressure nozzle, and the connection between the input and output ends of each group of multi-way tubes is respectively provided with a water pump, the bottom ends of the multiple baffles located below are respectively provided with sealing plates 2, and the bottom end of the tube plate is provided with sealing plate 1, and the outer walls of the bottom ends of sealing plates 1 and 2 are movably fitted to the outer wall of the rotating bin. The shell-and-tube heat exchanger provided by the present invention that can improve heat exchange efficiency has the technical effect of completing the drainage of hot fluid retention liquid to avoid scaling caused by too long retention time, reducing the frequency of cleaning the outer wall of the heat transfer tube bundle, and at the same time causing the hot fluid in the flow process to oscillate, thereby improving the heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a shell-and-tube heat exchanger proposed by the present invention that can improve heat exchange efficiency.

[0022] Figure 2 This is a schematic diagram of the internal structure of a shell-and-tube heat exchanger proposed by the present invention that can improve heat exchange efficiency.

[0023] Figure 3 This is a schematic diagram of the connection structure of the heat transfer tube bundle and baffles of a shell-and-tube heat exchanger proposed by the present invention, which can improve the heat exchange efficiency.

[0024] Figure 4 This is a schematic diagram of the disassembly of the drainage mechanism of a shell-and-tube heat exchanger proposed by the present invention, which can improve the heat exchange efficiency.

[0025] Figure 5 This is a schematic diagram of the internal structure of a rotating chamber of a shell-and-tube heat exchanger proposed by the present invention, which can improve heat exchange efficiency.

[0026] Figure 6 This is a schematic diagram of the overall structure of an oscillation mechanism of a shell-and-tube heat exchanger proposed by the present invention that can improve heat exchange efficiency.

[0027] Figure 7 This is a schematic diagram of the partial disassembly of the oscillation mechanism of a shell-and-tube heat exchanger proposed by the present invention, which can improve the heat exchange efficiency.

[0028] Figure 8 This is a schematic diagram of the overall structure of a drainage mechanism of a shell-and-tube heat exchanger proposed by the present invention, which can improve heat exchange efficiency.

[0029] Figure 9 This is a schematic diagram of the disassembly of the drainage mechanism of a shell-and-tube heat exchanger proposed by the present invention, which can improve the heat exchange efficiency.

[0030] Figure 10 This is a schematic diagram of the disassembled gear three-connection structure of a shell-and-tube heat exchanger proposed by the present invention, which can improve heat exchange efficiency.

[0031] In the figure: 1. hot fluid inlet pipe; 2. cold fluid outlet pipe; 3. shell; 4. oscillating mechanism; 5. cold fluid inlet pipe; 6. hot fluid outlet pipe; 7. drainage mechanism; 8. base frame; 9. drainage mechanism; 10. tube sheet; 11. heat transfer tube bundle; 12. baffle; 401. motor 1; 402. heat insulation chamber; 403. synchronous belt; 404. synchronous wheel set; 405. bearing frame 1; 406. groove; 407. rotating bracket; 408. magnet 1; 409. magnet 2; 410. cross bracket; 411. protruding rod; 701. supporting chamber; 702. drainage port; 703. rotating chamber; 704. sealing plate 1; 705. sealing plate 2; 706. through groove; 707. bearing frame 2; 708. bearing; 709. motor 2; 710. gear 1; 711, Gear 2; 712, High-pressure nozzle; 713, Multi-way pipe; 714, Water pump; 715, Perforation 1; 716, Perforation 2; 717, Connecting pipe; 718, Support shaft 1; 719, Inclined plate; 720, Inclined surface 1; 901, Annular limit groove; 902, Bearing frame 3; 903, Inclined surface 2; 904, Scraper 1; 905, Gear 3; 906, Hydraulic rod; 9 07. Support shaft two; 908. Support tube one; 909. Support shaft three; 910. Motor three; 911. C-type support plate; 912. Slide; 913. Scraper two; 914. Support tube two; 915. Support tube three; 916. Rack; 917. Side support plate; 918. Limit slider; 919. Limit slide rod; 920. Electric gripper; 921. Extension tube; 922. Raised strip. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] The present invention discloses a shell-and-tube heat exchanger capable of improving heat exchange efficiency, which is mainly used in chemical production scenarios.

[0034] Reference Figure 1-Figure 5, a shell and tube heat exchanger capable of improving heat exchange efficiency, comprising a shell 3, a hot fluid inlet pipe 1 and a cold fluid outlet pipe 2 are respectively provided on the top inner wall and the bottom inner wall of one side of the shell 3, a cold fluid inlet pipe 5 and a hot fluid outlet pipe 6 are respectively provided on the top inner wall and the bottom inner wall of the opposite side of the shell 3, an oscillation mechanism 4 is provided on the top inner wall of the shell 3, a drainage mechanism 7 is provided on the bottom inner wall of the shell 3, a drainage mechanism 9 is provided on one inner wall of the shell 3, and the drainage mechanism 9 and the cold fluid inlet pipe 5 are located on the same side, two tube sheets 10 are simultaneously fitted on the inner wall of the shell 3, and a heat transfer tube bundle 11 is simultaneously connected between the two tube sheets 10, the hot fluid inlet pipe 1 and the hot fluid outlet pipe 6 are located between the two tube sheets 10, a plurality of baffles 12 are equidistantly and staggeredly arranged up and down outside the heat transfer tube bundle 11, and a plurality of base frames 8 are fixedly connected to the bottom end of the shell 3;

[0035] The discharge mechanism 7 includes a support bin 701 fixed to the inner wall of the bottom end of the shell 3, and a rotating bin 703 is movably connected in the support bin 701. One end of the rotating bin 703 is fixedly connected to a support shaft 1 718, and the support shaft 1 718 passes through the support bin 701 and is connected to a gear 2 711. The gear 2 711 is meshed with a gear 1 710, and one side of the gear 1 710 is connected to a motor 2 709. A discharge port 702 is provided on one side of the rotating bin 703, and two inclined plates 719 are fixedly connected in the rotating bin 703, and the two inclined plates 719 are respectively located on both sides of the discharge port 702. A connecting pipe 717 is fixedly connected to the inner wall of the other end of the rotating bin 703, and the connecting pipe 717 is connected to the rotating The rotating shafts are collinear, the connecting pipe 717 passes through the supporting bin 701 and extends into the hot fluid outlet pipe 6, and the inner side of the connecting pipe 717 is provided with an inclined surface 720 inclined in the direction in which the hot fluid outlet pipe 6 is set. A plurality of groups of multi-channel pipes 713 are provided in the gap between the rotating bin 703 and the inclined plate 719, and the input end and output end of each group of multi-channel pipes 713 pass through the inner wall of the rotating bin 703 in the same direction at the same time, and the output end of each group of multi-channel pipes 713 is respectively provided with a high-pressure nozzle 712, and the connection between the input end and the output end of each group of multi-channel pipes 713 is respectively provided with a water pump 714, and the bottom ends of the plurality of baffles 12 located below are respectively provided with a sealing plate 2 705, and the bottom end of the tube sheet 10 is provided with a sealing plate 7 04, the outer wall of the bottom end of the sealing plate 1 704 and the sealing plate 2 705 is movably fitted to the outer wall of the rotating bin 703, and the motor 2 709 in the drainage mechanism 7 drives the gear 1 710 to rotate, and then drives the gear 2 711 to rotate through the meshing structure, and at the same time drives the rotating bin 703 to rotate in contact with the inner wall of the supporting bin 701 to change the setting position of the drainage port 702. When the drainage port 702 is located at the top, the hot fluid remaining at the bottom of the shell 3 can be guided to enter the rotating bin 703, and guided along the inclined plates 719 on both sides, and enter the hot fluid outlet pipe 6 through the connecting pipe 717 for discharge, completing the drainage of the hot fluid retention liquid to avoid scaling caused by too long a retention time and reduce the transmission The frequency of cleaning the outer wall of the heat pipe bundle 11 and the setting of the inclined surface 720 in the connecting pipe 717 can increase the difficulty of the liquid climbing, thereby preventing the hot fluid from entering the rotating bin 703 under the normal discharge state of the hot fluid outlet pipe 6. In addition, when the drain port 702 is located directly below the rotating bin 703, the input and output ends of the multiple groups of multi-way pipes 713 are connected to the inside of the shell 3 at the same time, thereby sucking in the hot fluid through the input end of the multi-way pipe 713, and then guided by the water pump 714, and sprayed out by the high-pressure nozzle 712, acting on the hot fluid from the bottom, causing the hot fluid to oscillate during the flow process. Through vibration, the uniformity of the temperature distribution is broken, the temperature difference is increased, and the heat transfer efficiency is improved.

[0036] Reference Figure 4In a preferred embodiment, a through groove 706 is provided at the connection between the shell 3 and the support bin 701, the motor 2 709 is fixed outside the bearing frame 2 707, and the output end of the motor 2 709 passes through the bearing frame 2 707 and is connected to the gear 1 710, a bearing 708 is inlaid on the inner wall of one side of the support bin 701, and the other side of the gear 1 710 is connected to the bearing 708.

[0037] Reference Figure 4 In a preferred embodiment, one side of the support bin 701 and the hot fluid outlet pipe 6 is penetrated by a second perforation 716, and the connecting pipe 717 is located in the second perforation 716 and is tightly connected to the inner wall of the second perforation 716. One side of the rotating bin 703 is penetrated by multiple first perforations 715, and the input ends and output ends of the multiple multi-way tubes 713 are respectively embedded in the multiple first perforations 715, and the cut ends of the input ends and output ends of the multi-way tubes 713 are consistent with the outer wall of the rotating bin 703.

[0038] Reference Figure 6 and Figure 7 In a preferred embodiment, the oscillation mechanism 4 includes a groove 406 arranged on the inner wall of the top end of the shell 3, and a plurality of rotating brackets 407 are equidistantly arranged at the top end of the groove 406, and a magnet 408 is horizontally installed at the bottom end of the rotating bracket 407, and the top end of each rotating bracket 407 is fixedly connected to a synchronous wheel set 404.

[0039] Reference Figure 6 and Figure 7 In a preferred embodiment, two adjacent synchronous wheel sets 404 are simultaneously sleeved with synchronous belts 403, and the top of one of the synchronous wheel sets 404 is connected to motor 1 401, the top of the shell 3 is fixedly connected to the insulation bin 402, and the synchronous wheel set 404 and the rotating bracket 407 are both located in the insulation bin 402, the motor 1 401 is installed at the top of the insulation bin 402, and the output end of the motor 1 401 passes through the insulation bin 402 and is connected to the synchronous wheel set 404.

[0040] Reference Figure 6 and Figure 7 In a preferred embodiment, a plurality of bearing frames 405 are equidistantly arranged on the inner wall of the groove 406 , and each synchronous wheel set 404 is respectively connected to the bearing frame 405 , and each magnet 1 408 is adsorbed with a magnet 2 409 across the groove 406 .

[0041] Reference Figure 6 and Figure 7In a preferred embodiment, a plurality of magnets 409 are respectively located between two adjacent baffles 12, and the bottom end of the magnet 409 is fixedly connected to a cross bracket 410, and a plurality of protruding rods 411 are evenly distributed at the bottom end of the cross bracket 410. In the oscillation mechanism 4, one of the synchronous wheel sets 404 can be driven to rotate by the motor 1 401, and based on the linkage setting of the synchronous belt 403, the plurality of rotating brackets 407 can be driven to rotate synchronously, and further, the magnet 1 408 located at the bottom end of the rotating bracket 407 can be driven to rotate. By setting the groove 406, the thickness of the inner wall of the top end of the shell 3 can be made thinner so that it will not affect the magnet 1 40 8 and the adsorption transmission of magnet 2 409, thereby driving the multiple cross brackets 410 located at the bottom of the groove 406 to rotate through the groove 406, and stirring the hot fluid at the top and in the flow process through the setting of the protruding rod 411, and the vibration generated during the stirring process can synchronously break the uniformity of the temperature distribution, increase the temperature difference, and thus accelerate the heat transfer, and can be assisted by the drainage mechanism 7 to synchronously act on the hot fluid flowing at the top and bottom to further improve the heat exchange efficiency. Moreover, based on the setting of the heat insulation bin 402 and the setting of the magnetic attraction structure, it will not affect the sealing of the shell 3 and will not affect the heat insulation inside the shell 3.

[0042] Reference Figure 8 and Figure 9 In a preferred embodiment, the drainage mechanism 9 includes a scraper 1 904 and a scraper 2 913, and the tops of the scraper 1 904 and the scraper 2 913 are respectively provided with an inclined surface 2 903 inclined toward the position of the heat transfer tube bundle 1. One side of the scraper 1 904 is fixedly connected to a support tube 3 915, and one end of the support tube 3 915 is sequentially fixedly connected to the support tube 2 914, the gear 3 905 and the extension tube 921. The extension tube 921 is surrounded by a plurality of ridges 922. The scraper 2 913 One side of the support shaft 907 is fixedly connected to the support shaft 2 907 and the support tube 1 908, one side of the support shaft 2 907 is fixedly connected to the support shaft 3 909, and the support shaft 3 909 passes through the support tube 1 908 and is connected to the motor 3 910 on one side of the shell 3, and a sealed bearing is provided at the connection between the support shaft 3 909 and the shell 3, the support tube 2 914, the gear 3 905 and the extension tube 921 are simultaneously sleeved on the support shaft 3 909, and part of the support tube 2 914 is sleeved between the support shaft 3 909 and the support tube 1 908.

[0043] Reference Figure 8 and Figure 9In a preferred embodiment, a C-shaped support plate 911 is fixedly connected to the support shaft three 909, and the C-shaped support plate 911 is located on the outside of the shell 3. An electric clamp 920 is installed on the inner wall of one side of the C-shaped support plate 911, and the electric clamp 920 is connected to a battery. The battery of the electric clamp 920 is also arranged on the outside of the shell 3. The electric clamp 920 is clamped outside the extension tube 921, and the opposite sides of the C-shaped support plate 911 are respectively fixedly connected with slides 912. The outer wall of one end of the shell 3 is fixedly connected with an annular limit groove 901, and the slide 912 is movably engaged in the annular limit groove 901. The outer wall of the same end of the shell 3 is fixedly connected with a bearing frame three 902, and the support shaft three 909 passes through and is rotatably connected to the bearing frame three 902.

[0044] Reference Figures 8-10In a preferred embodiment, motor three 910 is installed outside bearing frame three 902, and C-shaped support plate 911 is located on the inner side of bearing frame three 902. The outer wall of gear three 905 is movably engaged with a rack 916, and the outer wall of the bottom end of rack 916 is provided with multiple limiting sliders 918. Hydraulic rod 906 and limiting slide 919 are installed on C-shaped support plate 911 at the same time. Multiple limiting sliders 918 are simultaneously sleeved on limiting slide 919. One side outer wall of rack 916 is fixedly connected with side support plate 917, and the output end of hydraulic rod 906 is connected to side support plate 917. When cold fluid enters between tube sheet 10 and shell 3 from cold fluid inlet pipe 5, and then enters heat transfer tube bundle 11, when cold fluid stops pouring in, some fluid will be retained The gap between the tube sheet 10 and the shell 3 cannot enter the heat transfer tube bundle 11. In the drainage mechanism 9, when the cold fluid stops being injected, the hydraulic rod 906 is electrically connected to the battery, and the hydraulic rod 906 is started to extend, pushing the rack 916 to move horizontally, and ensuring the translation stability under the structure of the limit slider 918 moving on the limit slider 919. As the rack 916 moves horizontally, the gear three 905 is synchronously driven to rotate a certain distance, so that the outer side of the scraper one 904 can simultaneously fit the inner wall of the tube sheet 10 and the shell 3 and rotate. The support tube two 914 is sleeved between the support tube one 908 and the support shaft three 909, and the support tube three 915 is sleeved outside the support shaft three 909. The scraper one 904 can be ensured by the arrangement of the support tube one 908 and the support shaft three 909. 04 rotation stability. When scraper 2 913 is fixed, scraper 1 904 rotates to form a relative plane with scraper 2 913 as a whole. The electric clamp 920 is electrically connected to the battery. Then the electric clamp 920 clamps the outside of the extension tube 921 to fix the position of scraper 1 904. The setting of the ridge 922 can ensure the stability of the clamping of the electric clamp 920. At this time, the lower part of the inclined surface 2 903 is facing the setting direction of the tube sheet 10. The scraper 2 913 is then driven to rotate by the motor 3 910. The scraper 1 904 is driven to rotate synchronously by the clamping of the electric clamp 920, so that the two can fit the inner wall of the shell 3 to transfer the residual cold fluid and push the cold fluid upward until it enters the corresponding heat transfer tube bundle 11 to avoid the cold flow. The retention of the liquid body causes scaling. During the rotation process, the slide 912 can move along the annular limiting groove 901 to reduce the pressure on the output end of the motor 3 910 and ensure the stability of the rotation process. Compared with the structure using only a single scraper, when pushing the solution, the exposed side may cause the cold fluid to fall back to the bottom in the tilted state. The designed scraper expansion structure allows the two scrapers to serve as buffer platforms for each other. The solution can fall from one scraper to the other scraper and can also enter the heat transfer tube bundle 11. By reducing the probability of the cold fluid falling back, the recovery speed is optimized. Accordingly, before the cold fluid is injected again, the hydraulic rod 906 is retracted to make the scraper 1 904 retract and fit the bottom of the scraper 2 913, minimizing the angle between the two.Avoid the expanded scraper structure from partially blocking the connection path between the cold fluid inlet pipe 5 and the heat transfer tube bundle 11, so as to ensure that the cold fluid can evenly enter the heat transfer tube bundle 11 and ensure the utilization rate of the heat transfer tube bundle 11.

[0045] Working principle: In the liquid discharge mechanism 7, the motor 2 709 drives the gear 1 710 to rotate, and then drives the gear 2 711 to rotate through the meshing structure, and at the same time drives the rotating chamber 703 to rotate in close contact with the inner wall of the supporting chamber 701 to change the setting position of the liquid discharge port 702. When the liquid discharge port 702 is located at the top, the hot fluid remaining at the bottom of the shell 3 can be guided to enter the rotating chamber 703 and be guided along the inclined plates 719 on both sides to enter the hot fluid outlet pipe 6 through the connecting pipe 717 for discharge, thereby completing the drainage of the hot fluid retention liquid to avoid the accumulation of the hot fluid due to excessive retention time. Scale, reduce the frequency of cleaning the outer wall of the heat transfer tube bundle 11, and the setting based on the inclined surface 720 in the connecting pipe 717 can increase the difficulty of liquid climbing, thereby preventing the hot fluid from entering the rotating chamber 703 under the normal discharge state of the hot fluid outlet pipe 6. In addition, when the drain port 702 is located directly below the rotating chamber 703, the input and output ends of the multiple groups of multi-way pipes 713 are connected to the inside of the shell 3 at the same time, thereby sucking in the hot fluid through the input end of the multi-way pipe 713, and then guided by the water pump 714, sprayed out by the high-pressure nozzle 712, and acting on the hot fluid from the bottom, so that the flow The hot fluid in the process generates oscillations, which breaks the uniformity of temperature distribution through vibration, increases the temperature difference, and thus improves the heat transfer efficiency. At the same time, in the oscillation mechanism 4, one of the synchronous wheel sets 404 can be driven to rotate by the motor 1 401, and based on the linkage setting of the synchronous belt 403, multiple rotating brackets 407 can be driven to rotate synchronously, and further, the magnet 1 408 located at the bottom end of the rotating bracket 407 can be driven to rotate. By setting the groove 406, the thickness of the inner wall of the top end of the shell 3 can be made thinner, so that it will not affect the adsorption transmission of the magnet 1 408 and the magnet 2 409. This can drive the multiple cross brackets 410 located at the bottom of the groove 406 to rotate through the groove 406, and the hot fluid at the top and in the flow process can be stirred by the setting of the protruding rod 411. The vibration generated during the stirring process can simultaneously break the uniformity of the temperature distribution, increase the temperature difference, and thus accelerate the heat transfer. It can be assisted by the drainage mechanism 7 to synchronously act on the hot fluid flowing at the top and bottom to further improve the heat exchange efficiency. Based on the setting of the insulation chamber 402 and the setting of the magnetic attraction structure, it will not affect the sealing of the shell 3 and will not affect the heat insulation inside the shell 3.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A shell and tube heat exchanger capable of improving heat exchange efficiency, comprising a shell (3), characterized in that: The top inner wall and the bottom inner wall of one side of the shell (3) are respectively provided with a hot fluid inlet pipe (1) and a cold fluid outlet pipe (2); the top inner wall and the bottom inner wall of the opposite side of the shell (3) are respectively provided with a cold fluid inlet pipe (5) and a hot fluid outlet pipe (6); the top inner wall of the shell (3) is provided with an oscillation mechanism (4); the bottom inner wall of the shell (3) is provided with a drainage mechanism (7); and the inner wall of one side of the shell (3) is provided with a drainage mechanism (9). The drainage mechanism (9) and the cold fluid inlet pipe (5) are located on the same side, two tube sheets (10) are simultaneously provided on the inner wall of the shell (3), and a heat transfer tube bundle (11) is simultaneously connected between the two tube sheets (10), the hot fluid inlet pipe (1) and the hot fluid outlet pipe (6) are located between the two tube sheets (10), and a plurality of baffles (12) are equidistantly arranged above and below the heat transfer tube bundle (11), and the bottom end of the shell (3) is fixedly connected to a plurality of base frames (8); The liquid discharge mechanism (7) includes a support chamber (701) fixed to the inner wall of the bottom end of the housing (3), a rotating chamber (703) is movably connected in the support chamber (701), one end of the rotating chamber (703) is fixedly connected to a support shaft 1 (718), and the support shaft 1 (718) passes through the support chamber (701) and is connected to a gear 2 (711), the gear 2 (711) is meshed with a gear 1 (710), and one side of the gear 1 (710) The rotary chamber (703) is connected to a second motor (709), a liquid discharge port (702) is provided on one side of the rotary chamber (703), two inclined plates (719) are fixedly connected to the rotary chamber (703), and the two inclined plates (719) are respectively located on both sides of the liquid discharge port (702), and a connecting pipe (717) is fixedly connected to the inner wall of the other end of the rotary chamber (703), and the connecting pipe (717) is collinear with the rotation axis of the rotary chamber (703), and the connecting pipe (717) is fixedly connected to the inner wall of the other end of the rotary chamber (703). ) passes through the support bin (701) and extends into the hot fluid outlet pipe (6), and the inner side of the connecting pipe (717) is provided with an inclined surface (720) inclined in the direction in which the hot fluid outlet pipe (6) is provided. A plurality of groups of multi-way pipes (713) are provided in the gap between the rotating bin (703) and the inclined plate (719), and the input end and the output end of each group of multi-way pipes (713) simultaneously pass through the inner wall of the rotating bin (703) in the same direction. Each group of the multi-way pipes (713) The output ends of the plurality of baffles (12) are provided with high-pressure nozzles (712), and the connection between the input end and the output end of each group of multi-way tubes (713) is provided with a water pump (714), the bottom ends of the plurality of baffles (12) located below are provided with sealing plates 2 (705), and the bottom end of the tube plate (10) is provided with sealing plate 1 (704), and the outer walls of the bottom ends of the sealing plates 1 (704) and 2 (705) are movably attached to the outer wall of the rotating bin (703).

2. A shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 1, characterized in that: A through groove (706) is provided at the connection between the housing (3) and the support chamber (701); the second motor (709) is fixed outside the second bearing frame (707); and the output end of the second motor (709) passes through the second bearing frame (707) and is connected to the first gear (710); a bearing (708) is embedded in the inner wall of one side of the support chamber (701), and the other side of the first gear (710) is connected to the bearing (708).

3. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 1, characterized in that: One side of the support bin (701) and the hot fluid outlet pipe (6) is penetrated by a second perforation (716), and the connecting pipe (717) is located in the second perforation (716) and is tightly connected to the inner wall of the second perforation (716). One side of the rotating bin (703) is penetrated by multiple first perforations (715), and the input ends and output ends of the multiple multi-way pipes (713) are respectively embedded in the multiple first perforations (715), and the cut ends of the input ends and output ends of the multi-way pipes (713) are consistent with the outer wall of the rotating bin (703).

4. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 1, characterized in that: The oscillating mechanism (4) comprises a groove (406) arranged on the inner wall of the top end of the shell (3); a plurality of rotating brackets (407) are equidistantly arranged at the top end of the groove (406); a magnet (408) is laterally mounted at the bottom end of the rotating bracket (407); and a synchronous wheel set (404) is fixedly connected to the top end of each rotating bracket (407).

5. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 4, characterized in that: Two adjacent synchronous wheel groups (404) are simultaneously sleeved with synchronous belts (403), and the top of one of the synchronous wheel groups (404) is connected to a motor 1 (401), the top of the housing (3) is fixedly connected to a heat insulation bin (402), and the synchronous wheel group (404) and the rotating bracket (407) are both located in the heat insulation bin (402), the motor 1 (401) is installed at the top of the heat insulation bin (402), and the output end of the motor 1 (401) passes through the heat insulation bin (402) and is connected to the synchronous wheel group (404).

6. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 5, characterized in that: The inner wall of the groove (406) is provided with a plurality of bearing frames (405) at equal intervals, and each synchronous wheel set (404) is respectively connected to the bearing frame (405), and each magnet (408) is adsorbed with a magnet (409) across the groove (406).

7. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 6, characterized in that: The plurality of magnets (409) are respectively located between two adjacent baffles (12); the bottom ends of the magnets (409) are fixedly connected to a cross bracket (410); and the bottom ends of the cross bracket (410) are equidistantly distributed with a plurality of protruding rods (411).

8. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 1, characterized in that: The drainage mechanism (9) includes a scraper 1 (904) and a scraper 2 (913), and the tops of the scraper 1 (904) and the scraper 2 (913) are respectively provided with a slope 2 (903) inclined toward the position of the heat transfer tube bundle (11). One side of the scraper 1 (904) is fixedly connected to a support tube 3 (915), and one end of the support tube 3 (915) is fixedly connected to the support tube 2 (914), the gear 3 (905) and the extension tube (921) in sequence. The extension tube (921) is surrounded by a plurality of convex strips (922). One side of the scraper 2 (913) is fixedly connected to the support shaft 2 (907) and the support tube 1 (908), one side of the support shaft 2 (907) is fixedly connected to the support shaft 3 (909), and the support shaft 3 (909) passes through the support tube 1 (908) and one side of the shell (3) and is connected to the motor 3 (910), the support tube 2 (914), the gear 3 (905) and the extension tube (921) are simultaneously sleeved on the support shaft 3 (909), and part of the support tube 2 (914) is sleeved between the support shaft 3 (909) and the support tube 1 (908).

9. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 8, characterized in that: The support shaft (909) is fixedly connected to a C-shaped support plate (911), and the C-shaped support plate (911) is located outside the shell (3). An electric clamp (920) is installed on the inner wall of one side of the C-shaped support plate (911), and the electric clamp (920) is connected to a battery. The battery of the electric clamp (920) is also arranged on the outside of the shell (3). The electric clamp (920) is clamped outside the extension tube (921). The C-shaped support plate (911) is fixedly connected to a slide plate (912) on both sides facing each other. The outer wall of one end of the shell (3) is fixedly connected to an annular limiting groove (901), and the slide plate (912) is movably engaged in the annular limiting groove (901). The outer wall of the same end of the shell (3) is fixedly connected to a bearing frame (902), and the support shaft (909) passes through and is rotatably connected to the bearing frame (902).

10. The shell-and-tube heat exchanger capable of improving heat exchange efficiency according to claim 9, characterized in that: The motor three (910) is installed outside the bearing frame three (902), and the C-shaped support plate (911) is located on the inner side of the bearing frame three (902). The outer wall of the gear three (905) is movably engaged with a rack (916), and the outer wall of the bottom end of the rack (916) is provided with multiple limiting sliders (918). The C-shaped support plate (911) is simultaneously installed with a hydraulic rod (906) and a limiting slide rod (919), and multiple limiting sliders (918) are simultaneously sleeved on the limiting slide rod (919). The outer wall of one side of the rack (916) is fixedly connected with a side support plate (917), and the output end of the hydraulic rod (906) is connected to the side support plate (917).

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