Fluoroplastic steel flue heat exchanger

Abstract

The present application relates to heat exchanger technical field, specifically, it is a kind of fluorine plastic steel flue heat exchanger, including shell, the inside side end of the shell is fixedly connected with partition, the side wall of the partition is fixedly connected with multiple heat exchange pipes, the inside of the shell is fixedly connected with multiple drainage plates at the position corresponding heat exchange pipe, the partition, drainage plate and shell are equipped with the adaptive mechanism for preventing heat exchange pipe vibration damage on it, the adaptive mechanism includes multiple main magnets, multiple vice magnets, multiple containing bags, hydraulic cylinder, support rod and connecting rod, the beneficial effects of the present application are: eliminating the wear and tear, fatigue damage and gap leakage problem from the source, significantly prolong the service life of heat exchange pipe, can be adjusted support rigidity in real time according to the size of flue gas flow, ensure that heat exchange pipe is in stable stress state under different working conditions, can be adjusted to be completely fluid, completely rigid and semi-solid state, maintain the neatness of tube bundle arrangement, ensure long-term efficient heat exchange of heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically a fluoroplastic steel flue heat exchanger. Background Technology

[0002] Fluoroplastic steel flue heat exchangers are mainly used in the field of industrial high-temperature flue gas waste heat recovery. They are used to recover heat and cool down medium- and high-temperature flue gas emitted from boilers, kilns, and various equipment. The heat exchanger uses fluoroplastic steel as the main heat exchange material and achieves heat transfer between flue gas and heat exchange medium through a shell-and-tube structure. High-temperature flue gas flows in the shell side of the heat exchanger, while the heat exchange medium flows inside the heat exchange tubes. The two exchange heat indirectly through the tube walls, transferring the waste heat in the flue gas to cold water, heat transfer oil, or other working fluids, thus realizing heat energy recovery and reuse. Fluoroplastic steel has good temperature resistance and acid and alkali corrosion resistance, and can adapt to complex flue gas environments containing sulfur and dust, ensuring long-term stable operation of the heat exchange structure. The equipment as a whole can reduce the exhaust temperature, improve energy utilization efficiency, and reduce the impact of direct discharge of high-temperature flue gas on subsequent pipelines and the environment. It plays a stable heat exchange role in industrial energy saving, flue gas treatment, and waste heat utilization systems.

[0003] In existing technologies, the flow guide plate and multiple arranged heat exchange tubes are fixedly connected. The airflow state of the flue gas to be heat exchanged fluctuates with the operating conditions. When the flue gas impact intensity is large, the airflow exerts a continuous impact on the heat exchange tubes inside the shell, causing the heat exchange tubes to vibrate periodically. Since the heat exchange tubes and the flow guide plate are rigidly fixed, the alternating stress generated by the vibration of the heat exchange tubes will be concentrated at the connection point. Long-term operation can easily cause wear and fatigue damage at the connection point, which will lead to gap leakage, shorten the service life of the heat exchange tubes, reduce the overall heat exchange efficiency of the heat exchanger, and affect the long-term stable operation of the equipment. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a fluoroplastic steel flue heat exchanger.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a fluoroplastic steel flue heat exchanger, including a shell, a partition plate fixedly connected to the inner side of the shell, a plurality of heat exchange tubes fixedly connected to the side wall of the partition plate, and a plurality of flow guide plates fixedly connected to the inner side of the shell at the positions corresponding to the heat exchange tubes; The spacer plate, the flow guide plate, and the shell are all equipped with an adaptive mechanism to prevent vibration damage to the heat exchange tubes. The adaptive mechanism includes multiple main magnets, multiple secondary magnets, multiple containment bags, a hydraulic cylinder, a support rod, and a connecting rod. The outer walls of the main magnets and secondary magnets are fixedly connected with anti-corrosion layers. The inner rings of the main magnets and secondary magnets are fixedly connected with buffer pads. The containment bags are filled with magnetorheological fluid, which can switch between flexible and rigid states through the magnetic fields of the main magnets and secondary magnets. A rack is fixedly connected to the bottom of the output end of the hydraulic cylinder. A connecting rod is fixedly connected to the support rod. A gear is fixedly connected to the support rod at a position adjacent to the connecting rod. A connecting seat is fixedly connected to the side end of the connecting rod. An integral rod is fixedly connected between adjacent secondary magnets.

[0006] Specifically, a water inlet is fixedly connected to the top of the shell near the side end, a water outlet is fixedly connected to the bottom of the shell near the side end, a smoke exhaust port is fixedly connected to the top of the shell adjacent to the water inlet, a smoke inlet is fixedly connected to the bottom of the shell at a position symmetrical to the water outlet, and a symmetrically arranged base is fixedly connected to the bottom of the shell.

[0007] Specifically, the water inlet and outlet are both connected to the shell, and the smoke inlet and exhaust outlet are both connected to the shell.

[0008] Specifically, there are four drainage plates in total, two of which are fixedly connected to the top of the shell, and the other two are fixedly connected to the bottom of the shell.

[0009] Specifically, the main magnets are fixedly connected to the side walls of the partition plate and multiple flow guide plates, respectively. The auxiliary magnets are located on the outer walls of the partition plate and flow guide plates, and at positions symmetrical to the main magnets. The main magnets and the symmetrical auxiliary magnets are arranged with opposite poles. One end of each heat exchange tube slides through the auxiliary magnet, the main magnet, and the buffer pad. The receiving bags are fixedly connected to the corresponding heat exchange tube positions on the partition plate and flow guide plates. Each heat exchange tube is fixedly connected to its corresponding receiving bag. The hydraulic cylinder is fixedly installed at the top of the shell. The support rod is rotatably connected to the top of the shell at the position corresponding to the hydraulic cylinder through a support plate. The connecting rod is slidably connected to two of the flow guide plates. The anti-corrosion layer, the buffer pad, and the receiving bag are all made of fluororubber.

[0010] Specifically, the top integral rod is fixedly connected to the connecting rod, the rack is meshed with the gear, and the connecting seat shaft movably passes through the connecting rod.

[0011] The beneficial effects of this invention are: The adaptive mechanism enables rapid switching between rigid support and flexible buffering between the heat exchange tubes and the flow guide plate, effectively absorbing vibrations caused by flue gas impact, avoiding alternating stress concentration, eliminating wear, fatigue damage and gap leakage at the source, and significantly extending the service life of the heat exchange tubes. The use of magnetorheological fluid in conjunction with main and auxiliary magnets allows for real-time adjustment of the support stiffness according to the flue gas flow rate, ensuring that the heat exchange tubes are in a stable stress state under different operating conditions. It can be adjusted to a fully fluid, fully rigid and semi-solid state, maintaining the neatness of the tube bundle arrangement and ensuring long-term efficient heat exchange of the heat exchanger. In a semi-solid flexible support state, magnetorheological fluid can simultaneously achieve vibration damping and sound wave attenuation, reducing the noise generated by flue gas flow and tube bundle vibration, thus achieving the dual effects of noise reduction and vibration reduction. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 A cross-sectional view provided for this invention; Figure 2 This is a front view provided for the present invention; Figure 3 A structural diagram of the heat exchange tube penetrating the auxiliary magnet and the buffer pad provided by the present invention; Figure 4 This is a structural diagram showing the separation of the auxiliary magnet from the spacer plate and the sidewall of the diversion plate provided by the present invention. Figure 5 A cross-sectional view of the main magnet, the secondary magnet, and the receiving bag provided by the present invention; Figure 6 A structural diagram showing the connection between the integrated seat and the connecting rod provided by the present invention.

[0014] In the diagram: 1. Shell; 2. Spacer; 3. Heat exchanger tube; 4. Drainage plate; 5. Adaptive mechanism; 51. Main magnet; 52. Secondary magnet; 53. Container bag; 54. Hydraulic cylinder; 55. Support rod; 56. Connecting rod; 57. Anti-corrosion layer; 58. Buffer pad; 59. Magnetorheological fluid; 60. Rack; 61. Linkage rod; 62. Gear; 63. Connecting seat; 64. Integrated rod. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] Please see Figures 1 to 6 The present invention provides a fluoroplastic steel flue heat exchanger, including a shell 1, a partition plate 2 fixedly connected to the inner side of the shell 1, a plurality of heat exchange tubes 3 fixedly connected to the side wall of the partition plate 2, and a plurality of flow guide plates 4 fixedly connected to the inner side of the shell 1 at the positions corresponding to the heat exchange tubes 3. The partition plate 2, the diversion plate 4, and the shell 1 are all equipped with an adaptive mechanism 5 to prevent vibration damage to the heat exchange tube 3. The adaptive mechanism 5 includes multiple main magnets 51, multiple auxiliary magnets 52, multiple containment bags 53, a hydraulic cylinder 54, a support rod 55, and a connecting rod 56. The outer walls of the main magnets 51 and auxiliary magnets 52 are fixedly connected with anti-corrosion layers 57. The inner rings of the main magnets 51 and auxiliary magnets 52 are fixedly connected with buffer pads 58. The containment bags 53 are filled with magnetorheological fluid 59. The magnetorheological fluid 59 can switch between flexible and rigid states through the magnetic fields of the main magnets 51 and auxiliary magnets 52. The bottom of the output end of the hydraulic cylinder 54 is fixedly connected with a rack 60. The support rod 55 is fixedly connected with a connecting rod 61. The support rod 55 is fixedly connected with a gear 62 at a position adjacent to the connecting rod 61. The side end of the connecting rod 56 is fixedly connected with a connecting seat 63. An integral rod 64 is fixedly connected between adjacent auxiliary magnets 52.

[0017] A water inlet is fixedly connected to the top of the shell 1 near the side end, a water outlet is fixedly connected to the bottom of the shell 1 near the side end, a smoke exhaust port is fixedly connected to the top of the shell 1 adjacent to the water inlet, a smoke inlet is fixedly connected to the bottom of the shell 1 at a position symmetrical to the water outlet, and a symmetrically arranged base is fixedly connected to the bottom of the shell 1. The base facilitates the provision of working support for the shell 1. The water inlet and water outlet are both in communication with the shell 1, and the smoke inlet and smoke exhaust port are both in communication with the shell 1. There are four diversion plates 4 in total. Two diversion plates 4 are fixedly connected to the top of the inside of the housing 1, and the other two diversion plates 4 are fixedly connected to the bottom of the inside of the housing 1. The diversion plates 4 facilitate the diversion of flue gas entering the inside of the housing 1. The main magnet 51 is fixedly connected to the side wall of the partition plate 2 and the side wall of multiple guide plates 4. The auxiliary magnets 52 are located on the outer wall of the partition plate 2, the guide plates 4, and at symmetrical positions to the main magnet 51. The main magnet 51 and the symmetrical auxiliary magnets 52 are arranged with opposite poles, so that there is an opposite magnetic field between them, thereby transforming the magnetorheological fluid 59 from a fluid to a rigid body. One end of the heat exchange tube 3 slides through the auxiliary magnet 52, the main magnet 51, and the buffer pad 58. The buffer pad 58 can provide a certain vibration space for the heat exchange tube 3. The receiving bag 53 is fixedly connected to the partition plate 2 and the guide plates 4 at the corresponding positions of the heat exchange tube 3. The heat exchange tube 3 is fixedly connected to the corresponding receiving bag 53. The pressure cylinder 54 is fixedly installed at the top of the housing 1. The support rod 55 is rotatably connected to the top of the housing 1 at the position corresponding to the hydraulic cylinder 54. The anti-corrosion layer 57, the buffer pad 58 and the receiving bag 53 are all made of fluororubber, which has the characteristics of high temperature resistance and corrosion resistance. The connecting rod 56 is slidably connected to two of the diversion plates 4. The top integrated rod 64 is fixedly connected to the connecting rod 56. The connecting rod 56 facilitates the movement of multiple auxiliary magnets 52 together through the integrated rod 64. The rack 60 is meshed with the gear 62. The rack 60 facilitates the rotation of the gear 62. The shaft of the connecting seat 63 moves through the connecting rod 61. When the connecting rod 61 rotates, it facilitates the movement of the connecting seat 63 together.

[0018] In use, high-temperature flue gas is discharged from the flue gas inlet into the shell 1, while coolant is introduced into the shell 1 through the water inlet. The high-temperature flue gas will slowly flow towards the flue gas outlet through multiple guide plates 4 inside the shell 1, while the coolant will enter multiple heat exchange tubes 3 at the top of the partition plate 2. The coolant will flow slowly from the top to the bottom of the multiple heat exchange tubes 3, and finally be discharged to the bottom position of the corresponding partition plate 2 inside the shell 1, and then be discharged through the water outlet. During the flow of flue gas inside the shell 1, it will fully contact the heat exchange tubes 3 carrying the coolant, thereby achieving the effect of efficient heat exchange without contact with the cooling medium. Then the flue gas will be discharged from the flue gas outlet, and the heat exchange can be repeated in this way. When the flue gas has a strong impact, it will cause the heat exchange tube 3 to vibrate. At this time, the hydraulic cylinder 54 can be activated. The output end of the hydraulic cylinder 54 extends and drives the rack 60 to move upward inside the housing 1. The upward movement of the rack 60 drives the gear 62 to rotate. The rotation of the gear 62 drives the support rod 55 to rotate. The rotation of the support rod 55 drives the connecting rod 61 to rotate clockwise. The rotation of the connecting rod 61 will squeeze the shaft of the connecting seat 63, thereby causing the connecting seat 63 to move in the direction of the rotation of the connecting rod 61. The movement of the connecting seat 63 will drive the connecting rod 56 to move together. The connecting rod 56 will move under the guidance of the two guide plates 4. The movement of the connecting rod 56 will drive the movement of multiple auxiliary magnets 52 through multiple integrated rods 64. The auxiliary magnets 52 will all move away from the corresponding main magnet 51 on the heat exchange tube 3. At this time, the magnetic field between the main magnet 51 and the corresponding auxiliary magnet 52 weakens. Then, the magnetorheological fluid 59 in the containment bag 53 located between the main magnet 51 and the auxiliary magnet 52 will change from a completely rigid state to a state with both... The heat exchange tube 3 is in a semi-solid state with a certain degree of flexibility and structural rigidity, rather than being completely transformed into a free-flowing fluid state. In this state, the vibrating heat exchange tube 3 will vibrate flexibly under the support of multiple containment bags 53 and magnetorheological fluid 59. The magnetorheological fluid 59 and containment bags 53 can adapt to the vibration of the heat exchange tube 3. The buffer pads 58 of the inner ring of the main magnet 51 and the auxiliary magnet 52 will also deform accordingly. In this state, the heat exchange tube 3 will not vibrate rigidly with the guide plate 4, thus avoiding wear and fatigue damage to the heat exchange tube 3. When the flue gas can no longer make the heat exchange tube 3 vibrate, the auxiliary magnet 52 can be reset to its original position to make the magnetorheological fluid 59 completely transform into rigidity, thereby providing rigid support for the heat exchange tube 3 together with the containment bags 53 and the guide plate 4. The state of the containment bags 53 and the magnetorheological fluid 59 can be freely adjusted according to the degree of vibration of the heat exchange tube, and can be adjusted to a completely fluid, completely rigid, or semi-solid state, thereby effectively improving the working efficiency, quality, and service life of the entire heat exchanger, while also having the characteristics of high ease of operation.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fluoroplastic steel flue heat exchanger, characterized in that: Includes a shell (1), a partition plate (2) is fixedly connected to the inner side of the shell (1), a plurality of heat exchange tubes (3) are fixedly connected to the side wall of the partition plate (2), and a plurality of flow guide plates (4) are fixedly connected to the inner side of the shell (1) at the positions corresponding to the heat exchange tubes (3). The spacer plate (2), the flow guide plate (4), and the shell (1) are all provided with an adaptive mechanism (5) to prevent vibration damage to the heat exchange tube (3). The adaptive mechanism (5) includes multiple main magnets (51), multiple auxiliary magnets (52), multiple containment bags (53), a hydraulic cylinder (54), a support rod (55), and a connecting rod (56). The outer walls of the main magnets (51) and auxiliary magnets (52) are fixedly connected with anti-corrosion layers (57). The inner rings of the main magnets (51) and auxiliary magnets (52) are fixedly connected with buffer pads (58). The containment bags (53) The interior is filled with magnetorheological fluid (59). The magnetorheological fluid (59) can switch between flexible and rigid through the magnetic fields of the main magnet (51) and the auxiliary magnet (52). The bottom of the output end of the hydraulic cylinder (54) is fixedly connected to a rack (60). A connecting rod (61) is fixedly connected to the support rod (55). A gear (62) is fixedly connected to the support rod (55) at a position adjacent to the connecting rod (61). A connecting seat (63) is fixedly connected to the side end of the connecting rod (56). An integral rod (64) is fixedly connected between adjacent auxiliary magnets (52).

2. The fluoroplastic steel flue heat exchanger according to claim 1, characterized in that: The shell (1) has a water inlet fixedly connected to the top of the side end, a water outlet fixedly connected to the bottom of the side end, a smoke exhaust port fixedly connected to the top of the shell (1) at a position adjacent to the water inlet, a smoke inlet fixedly connected to the bottom of the shell (1) at a position symmetrical to the water outlet, and a symmetrically arranged base fixedly connected to the bottom of the shell (1).

3. The fluoroplastic steel flue heat exchanger according to claim 2, characterized in that: The water inlet and outlet are connected to the shell (1), and the smoke inlet and exhaust outlet are connected to the shell (1).

4. The fluoroplastic steel flue heat exchanger according to claim 1, characterized in that: There are four drainage plates (4) in total, two of which are fixedly connected to the top of the shell (1) and the other two are fixedly connected to the bottom of the shell (1).

5. A fluoroplastic steel flue heat exchanger according to claim 1, characterized in that: The main magnet (51) is fixedly connected to the side wall of the partition plate (2) and the side wall of multiple flow guide plates (4). The auxiliary magnets (52) are located on the outer wall of the partition plate (2), the flow guide plates (4), and at symmetrical positions to the main magnet (51). The main magnet (51) and the symmetrical auxiliary magnets (52) are arranged with opposite poles. One end of the heat exchange tube (3) slides through the auxiliary magnet (52), the main magnet (51), and the buffer pad (58). The receiving bag (53) is fixedly connected to the partition plate (2) and the side wall of multiple flow guide plates (4). 2) At the position of the heat exchange tube (3) on the diversion plate (4), the heat exchange tube (3) is fixedly connected to the corresponding receiving bag (53). The hydraulic cylinder (54) is fixedly installed at the top of the shell (1). The support rod (55) is rotatably connected to the position of the hydraulic cylinder (54) at the top of the shell (1) through the support plate. The connecting rod (56) is slidably connected to two of the diversion plates (4). The anti-corrosion layer (57), the buffer pad (58) and the receiving bag (53) are all made of fluororubber.

6. The fluoroplastic steel flue heat exchanger according to claim 1, characterized in that: The top integral rod (64) is fixedly connected to the connecting rod (56), the rack (60) is meshed with the gear (62), and the shaft of the connecting seat (63) moves through the connecting rod (61).

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