A natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment and method

Abstract

The present invention belongs to the field of heat exchange technology, and in particular relates to a natural gas TEG dehydration regeneration tail gas condensation heat exchange device and method, comprising a heat exchanger and a spray assembly, wherein the heat exchanger comprises a heat exchange box and a heat exchange tube bundle arranged in a V shape, wherein two first guide rods are horizontally arranged at the upper end of the heat exchange box, and a second guide rod is slidably arranged on the two first guide rods, and a third guide rod parallel to the second guide rod is arranged in the middle of the bottom side of the heat exchange box; the spray assembly adopts a retractable multi-section spray pipe structure, wherein one end of the spray assembly is slidably arranged on the second guide rod, and the other end of the spray assembly is slidably arranged on the third guide rod. This structure takes into account both efficient spray-assisted cooling and efficient cleaning and dust removal of the heat exchange fins. By adapting the retractable and adjustable spray assembly to the position of the fan, it can not only ensure the rational use of space, but also ensure that efficient spray cooling and cleaning and dust removal are achieved at different positions.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchange, and in particular relates to a natural gas TEG dehydration regeneration tail gas condensation heat exchange device and method. Background Art

[0002] TEG (triethylene glycol) dehydration is a commonly used natural gas dehydration process. It utilizes the high hygroscopicity of triethylene glycol to remove moisture from natural gas to meet pipeline transportation or processing requirements. In the TEG dehydration process, the distillation column (also known as the regeneration column or stripping column) is a key component of the TEG regeneration system. Located above the reboiler, the bleed air is the exhaust from the top of the distillation column. This bleed air typically contains water vapor, volatile organic compounds (VOCs), and trace amounts of TEG. Direct discharge can cause environmental pollution and economic losses (TEG loss), requiring recovery or treatment to achieve environmental protection and energy conservation.

[0003] One solution for recovering bleed air from a distillation column involves using an air cooler to cool the bleed air to below 40°C, condensing the water vapor and TEG, and then separating the liquid water and TEG in a separator tank. There are various types of air coolers, one of which is the V-type air cooler. This utilizes a V-shaped support structure with a symmetrical V-shaped heat exchange tube bundle. Fan blades are also installed to assist with air intake. Some air coolers also include a spray system to aid cooling under high-temperature conditions or to clean and remove dust from the heat exchange fins.

[0004] However, the existing air cooler spray system cannot take into account both efficient spray-assisted cooling and efficient cleaning and dust removal of the heat exchange fins. The reasons are as follows: For larger air coolers, in order to ensure that the V-shaped heat exchanger can be fully sprayed, the spray pipe of the spray system is generally arranged on the upper side, and the spray water is sprayed vertically downward on the heat exchange tube bundles on both sides to achieve cooling. However, due to the small gap between the heat exchange fins and the long distance between the spray pipe and the fins, the spray water cannot fully penetrate the densely arranged fins, resulting in the inability to effectively clean and dust the narrow areas between the fins. In addition, the spray water will be wasted and cannot be recycled. Summary of the Invention

[0005] In response to the technical problems existing in the background technology, the present invention provides a TEG-regenerated exhaust gas condensation heat exchange equipment, which, by designing an adjustable spray component, takes into account both efficient spray-assisted cooling and efficient cleaning and dust removal of the heat exchange fins.

[0006] To achieve the above objectives, the technical solution provided by the present invention is:

[0007] A natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment includes a frame, a heat exchanger, a fan and a spray assembly. The heat exchangers are symmetrically arranged on both sides of the frame. The heat exchanger includes a heat exchange box and a heat exchange tube bundle arranged in a V shape. The interior of the heat exchange box is filled with a plurality of heat exchange tube bundles. A fan is arranged directly above the heat exchange box. Two first guide rods are horizontally arranged at the upper end of the heat exchange box. The first guide rods are located on the bottom side of the fan. A second guide rod is slidably arranged on the two first guide rods. A third guide rod parallel to the second guide rod is arranged in the middle of the bottom side of the heat exchange box; the spray assembly adopts a retractable multi-section spray pipe structure, one end of the spray assembly is slidably set on the second guide rod, and the other end of the spray assembly is slidably set on the third guide rod.

[0008] Optionally, the spray assembly includes a first spray pipe, a second spray pipe and a baffle, the interior of the first spray pipe is provided with a first inner tube and a second inner tube of different diameters, one end of the second spray pipe is sequentially extended with a screw rod section and a polished rod section, a plurality of first spray holes are symmetrically distributed on both sides of the first spray pipe, a plurality of second spray holes are symmetrically distributed on both sides of the second spray pipe, and the spraying direction of the first spray hole and the second spray hole is the same; the outer wall of the first spray pipe is rotatably provided with a baffle, and the baffle is used to rotate and block the first spray hole on either side; the outer wall of the polished rod section slides closely against the inner wall of the first inner tube, and the inner wall of the second inner tube is provided with There is a first sealing ring, which is arranged tightly against the outer wall of the polished rod section; a screw nut is provided on the screw section, and a guide sleeve is provided on one side of the screw nut. The screw nut and the guide sleeve are arranged inside the second inner tube, and one end of the guide sleeve is provided with a mounting flange, and the mounting flange is connected to the end face of the stop sleeve; one end of the first spray pipe is provided with a first sliding sleeve that is slidably connected to the third guide rod, and one end of the second spray pipe is provided with a second sliding sleeve that is slidably connected to the second guide rod; when the first spray pipe and the second spray pipe extend and retract, the linked screw section extends and retracts, driving the screw nut to rotate and thereby realizing the rotation adjustment of the stop sleeve.

[0009] Optionally, through grooves are symmetrically provided on both sides of the baffle sleeve, a block for blocking the first spray hole is formed between the two through grooves, a spray groove is provided on the block, and the two spray grooves are symmetrically arranged; when the spray assembly is vertically arranged and located in the middle of the heat exchange tube bundles on both sides, the first spray hole is arranged opposite the through groove; when the spray assembly is tilted and close to the heat exchanger on either side, the first spray hole on the side close to the heat exchange tube bundle is opposite to the spray groove to realize spraying, and the first spray hole on the side away from the heat exchange tube bundle is opposite to the block to close the spraying.

[0010] Optionally, the heat exchange tube bundle is arranged in a U shape, and a plurality of heat exchange fins are provided on the outer sides of the heat exchange tube bundles. The heat exchange fins include a first fin arranged in a V shape and a second fin integrally connected to both sides of the first fin. The heat exchange tube bundle passes through the second fin on one side and bends to pass back through the second fin on the other side. When the spray assembly sprays and cleans the heat exchange fins, the spray water is sprayed in from between adjacent second fins, and after being guided by the V-shaped structure of the first fin, reaches the second fin on the other side and is sprayed out.

[0011] Optionally, air inlet grilles are provided on both sides of the heat exchange box, a top plate is provided at the upper end of the heat exchange box, a recovery box is provided on the bottom side of the heat exchange box, a conical base is provided at the upper end of the recovery box, the bottom ends of the heat exchange fins are supported on the base, and the upper ends of the heat exchange fins are arranged close to the top plate; a reflux channel is provided in the middle of the base, a gap is provided between the heat exchange fins and the grille, a collection tank is formed between the base and the bottom side of the grille, and the collection tank is connected to the recovery box on the bottom side.

[0012] Optionally, a first joint and a second joint are provided at the bottom end of the first spray pipe, the first joint is connected to the first spray pipe, and the second joint is connected to the first inner tube; the first joint and the second joint are respectively connected to the water pump through pipes, and the water pump is installed on the bottom side of the first spray pipe, and the water inlet pipe of the water pump extends into the recovery box through the reflux channel.

[0013] Optionally, the fan includes a fan box, fan blades are arranged inside the fan box, a filter is arranged at the upper end of the fan box, and the fan box is installed at the upper end of the frame and is arranged opposite to the recovery box.

[0014] Optionally, limit blocks are symmetrically arranged on both sides of the frame, and the limit blocks are arranged close to the top plate.

[0015] A method for condensing and heat exchanging exhaust gas from dehydration and regeneration of natural gas TEG, wherein when the spray assembly is arranged vertically, the second spray pipe is received inside the first spray pipe, the baffle sleeve opens the first spray hole, and the first spray pipe sprays to both sides to achieve auxiliary cooling; when the spray assembly is arranged tilted and close to the heat exchange fins, the second spray pipe extends from the inside of the first spray pipe, the baffle sleeve rotates to close the first spray hole on the side away from the heat exchange fins, and opens the first spray hole on the side close to the heat exchange fins to spray on one side to achieve spray cleaning of the heat exchange fins.

[0016] The present invention has the following advantages and beneficial effects:

[0017] In the present invention, by arranging the spray assembly between the V-shaped heat exchange tube bundles on both sides and utilizing the spray assembly's adjustable structure, uniform spraying to assist cooling and efficient cleaning and dust removal of the heat exchange fins are achieved. When the spray assembly is set vertically, the second spray pipe is stored inside the first spray pipe, the baffle sleeve opens the first spray hole, and the first spray pipe sprays to both sides to achieve auxiliary cooling. When the spray assembly is set at an angle and close to the heat exchange fins, the second spray pipe extends from the inside of the first spray pipe, and the baffle sleeve rotates to close the first spray hole on the side away from the heat exchange fins, thereby increasing the overall spray water pressure. The distance between the spray hole and the heat exchange fins is adjusted to bring the spray assembly close to the heat exchange fins, and the first spray hole on the side close to the heat exchange fins is opened to spray from one side at high pressure to achieve efficient spray cleaning of the heat exchange fins. This structure takes into account both efficient spray-assisted cooling and efficient cleaning and dust removal of the heat exchange fins. In addition, the telescopically adjustable spray assembly can adapt to the position of the upper fan. The spray assembly rotates within the triangular area and will not collide or interfere with the fan. It can not only ensure the rational use of space, but also ensure that efficient spray cooling and efficient cleaning and dust removal can be achieved at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the condensing heat exchange equipment in the present invention;

[0019] Figure 2 is a cross-sectional view of the condensing heat exchange equipment of the present invention;

[0020] Figure 3 This is a structural diagram of the tilted arrangement of the heat exchanger and the spray assembly in the present invention;

[0021] Figure 4 for Figure 3 A local enlarged view of point a in the middle;

[0022] Figure 5 This is a structural diagram of the vertical arrangement of the heat exchanger and the spray assembly in the present invention;

[0023] Figure 6 for Figure 5 Front view of

[0024] Figure 7 for Figure 5 A partial enlarged view of point b in the middle;

[0025] Figure 8 for Figure 6 A partial enlarged view of point c in the middle;

[0026] Figure 9 This is a structural diagram of the spray assembly of the present invention extending out to spray on one side;

[0027] Figure 10 is a cross-sectional view of the spray assembly of the present invention;

[0028] Figure 11 for Figure 10 A magnified view of the middle part of the structure;

[0029] Figure 12 This is a cross-sectional view of the present invention where the baffle does not block the spray cooling on both sides of the first spray hole;

[0030] Figure 13 This is a first cross-sectional view of the present invention in which the baffle shields the first spray hole for single-side spray cooling;

[0031] Figure 14 This is a second cross-sectional view of the present invention in which the baffle sleeve blocks the first spray hole for single-side spray cooling;

[0032] Figure 15 It is a structural diagram of the heat exchange fins in the present invention;

[0033] Figure 16 is a cross-sectional view of the first spray pipe in the present invention;

[0034] Figure 17 This is a structural diagram of the second spray pipe in the present invention;

[0035] Figure 18 It is a structural diagram of the retaining sleeve in the present invention;

[0036] Figure 19 is a cross-sectional view of the retaining sleeve in the present invention;

[0037] Figure 20 This is a structural diagram of the heat exchange tube bundle and heat exchange fins in the present invention;

[0038] Figure 21 This is a diagram of the distillation column air recovery system in the present invention;

[0039] Figure 22 This is one of the structural diagrams of the condensing heat exchange device provided with the reel mechanism in the present invention;

[0040] Figure 23 This is the second structural diagram of the drum mechanism provided on the condensing heat exchange device of the present invention;

[0041] Figure 24 This is a structural diagram of the connection between the first pull rope, the second pull rope and the spray assembly in the present invention.

[0042] Figure 1: Frame, 11: Side panel, 12: Limit block, 2: Fan, 21: Fan housing, 22: Driving device, 23: Blade, 24: Filter, 3: Recovery box, 3a: Recovery chamber, 3b: Collection tank, 31: Base, 32: Air inlet grille, 33: Return channel, 34: Top plate, 35: First guide rod, 36: Second guide rod, 36: Third sliding sleeve, 37: Third guide rod, 4: Heat exchange tube bundle, 41: First pipe, 42: Second pipe, 43: Connecting flange, 5: Heat exchange fin, 51: First fin, 52: Second fin, 53: Pipe hole, 6: Spray assembly, 7: First spray pipe, 71: Second A spray hole, 72-first inner tube, 73-second inner tube, 731-first sealing ring, 74-first joint, 75-second joint, 76-first sliding sleeve, 8-second spray pipe, 81-second spray hole, 82-screw segment, 83-light rod segment, 84-second sealing ring, 85-second sliding sleeve, 86-second pull rope, 87-second reel mechanism, 9-stop sleeve, 91-through groove, 92-stop block, 93-spray slot, 94-mounting flange, 941-connecting hole, 95-guide sleeve, 96-screw nut, 97-rotating sleeve, 98-first pull rope, 99-first reel mechanism, 10-triethylene glycol reboiler, 101-distillation column. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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, not all of the embodiments.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0045] Example 1

[0046] like Figure 21 As shown, the distillation column vent air recovery system includes a triethylene glycol reboiler 10 and an air cooler A. A distillation column 101 is provided on the triethylene glycol reboiler 10. The top exhaust of the distillation column 101 is connected to the air cooler A through a pipeline. The air cooler A is used to cool the vent air to below 40°C, condense water vapor and TEG, and then use a separation tank to separate liquid water and TEG.

[0047] like Figure 1 and Figure 2As shown, a natural gas TEG dehydration regeneration exhaust gas condensation heat exchange equipment includes a frame 1, a heat exchanger, a fan 2 and a spray assembly 6. The heat exchangers are symmetrically arranged on both sides of the frame 1. The heat exchanger includes a heat exchange box and a heat exchange tube bundle 4 arranged in a V shape. The heat exchange box is installed inside the frame 1, and side panels 11 are respectively provided on both sides of the frame 1 for blocking. The heat exchange box is arranged in a V shape with an opening facing upward. The interior of each side of the heat exchange box is filled with a number of heat exchange tube bundles 4, and a fan 2 is installed directly above the heat exchange box. During heat exchange, air is introduced into the heat exchange tube bundle 4, and the fan 2 is started. Cold air is sucked in from both sides of the heat exchange box and exchanges heat with the heat exchange tube bundle 4. The hot air after heat exchange is vertically drawn out above the fan 2.

[0048] like Figures 1 to 8 As shown, two first guide rods 35 are horizontally mounted at the upper end of the heat exchanger box, reinforcing the open top structure. The first guide rods 35 are located on the underside of the fan 2 to prevent interference with the fan 2. Second guide rods 36 are slidably mounted on the two first guide rods 35. Third sleeves 361 are mounted at the ends of the second guide rods 36. These sleeves 361 slide onto the outer walls of the first guide rods 35, allowing the second guide rods 36 to slide to either side of the heat exchange tube bundle 4. A third guide rod 37 is positioned parallel to the second guide rods 36 in the middle of the bottom of the heat exchanger box. The spray assembly 6 utilizes a retractable, multi-section spray pipe structure. One end of the spray assembly 6 slides onto the second guide rod 36, and the other end slides onto the third guide rod 37. This structure allows the angle and distance between the spray assembly 6 and either side of the heat exchange tube bundle 4 to be adjusted by moving the second guide rods 36. The spray assembly 6 can also be adjusted along the length of the second guide rods 36.

[0049] In the present invention, by arranging the spray assembly 6 between the V-shaped heat exchange tube bundles 4 on both sides and utilizing the adjustable structure of the spray assembly 6, uniform spraying to assist in cooling and efficient cleaning and dust removal of the heat exchange fins 5 are achieved.

[0050] like Figure 6 As shown, when the spray assembly 6 is set vertically, the spray assembly 6 is located in the middle of the heat exchange tube bundles 4 on both sides, and the first spray pipe 7 sprays to both sides to achieve auxiliary cooling. Figures 2 to 4As shown, when the spray assembly 6 is tilted and positioned close to one side of the heat exchange tube bundle 4, the second spray pipe 8 extends from the inside of the first spray pipe 7, and together they approach the heat exchange tube bundle 4 and heat exchange fins 5 for efficient spray cleaning. This structure combines efficient spray-assisted cooling with efficient cleaning and dust removal of the heat exchange fins 5. Furthermore, the telescopically adjustable spray assembly 6 can adapt to the position of the upper fan 2. The spray assembly 6 rotates within the triangular area without colliding or interfering with the fan 2, ensuring both rational use of space and efficient spray cooling and cleaning and dust removal at different locations.

[0051] Example 2

[0052] In order to ensure the efficiency of spray cooling and spray cleaning of the heat exchange fins 5 and improve the dust removal effect, further optimization design is made.

[0053] like Figures 1 to 20 As shown, the spray assembly 6 includes a first spray pipe 7, a second spray pipe 8 and a baffle 9. The interior of the first spray pipe 7 is provided with a first inner tube 72 and a second inner tube 73 of different diameters. The outer diameter of the first inner tube 72 is smaller than the outer diameter of the second inner tube 73. The first inner tube 72 and the second inner tube 73 form a stepped tube. One end of the second spray pipe 8 is sequentially extended with a screw section 82 and a polished rod section 83. A plurality of first spray holes 71 are symmetrically distributed on both sides of the first spray pipe 7, and a plurality of second spray holes 81 are symmetrically distributed on both sides of the second spray pipe 8. The first spray hole 71 and the second spray hole 81 have the same spray direction. The inner hole of the first spray hole 71 is set to be fan-shaped and flat, which can disperse the spray along the fan-shaped area. The second spray hole 81 is a cylindrical hole, which sprays vertically and concentratedly.

[0054] like Figure 10 and Figure 11As shown, the outer wall of the first spray pipe 7 is rotatably provided with a baffle 9, which is used to rotatably block the first spray hole 71 on either side, that is, the baffle 9 can be rotatably blocked or opened. The outer wall of the polished rod section 83 slides closely against the inner wall of the first inner tube 72, and the inner wall of the second inner tube 73 is fixedly provided with a first sealing ring 731, which is provided on the stepped end surfaces of the first inner tube 72 and the second inner tube 73. The first sealing ring 731 is provided closely against the outer wall of the polished rod section 83 to achieve a seal and prevent the medium inside the first inner tube 72 from seeping into the second inner tube 73. A screw nut 96 is provided on the screw segment 82, and a guide sleeve 95 is provided on one side of the screw nut 96. The screw nut 96 and the guide sleeve 95 are arranged inside the second inner tube 73. A second sealing ring 84 is provided between the screw segment 82 and the second spray pipe 8. The second sealing ring 84 always slides against the inner wall of the second inner tube 73 to achieve a sealing effect and prevent external water from seeping into and affecting the screw nut 96. A mounting flange 94 is provided at one end of the guide sleeve 95. The mounting flange 94 is connected to the end face of the stopper sleeve 9. The end face of the stopper sleeve 9 is provided with a connecting hole 941. The mounting flange 94 and the connecting hole 941 are aligned and screwed in to fix them. The screw nut 96 rotates in conjunction with the stopper sleeve 9 to rotate, thereby enabling the stopper sleeve 9 to block or open the first spray hole 71. One end of the first spray pipe 7 is provided with a first sliding sleeve 76 that is slidably connected to the third guide rod 37, and one end of the second spray pipe 8 is provided with a second sliding sleeve 85 that is slidably connected to the second guide rod 36. When the first and second spray pipes 7 and 8 extend and retract, the linked screw segment 82 extends and retracts. The screw segment 82 acts as the active element, driving the screw nut 96 to rotate, thereby achieving rotational adjustment of the stopper sleeve 9 and closing or opening the first spray hole 71. The screw nut 96 and screw segment 82 utilize a non-self-locking screw (such as a ball screw). When the friction angle is less than the thread lead angle, linear motion is converted into rotational motion.

[0055] This structure does not require the design of a driving mechanism. The rotation of the blocking sleeve 9 can be achieved by utilizing the telescopic movement of the spray assembly 6. The overall structure is compact and ingenious. The blocking sleeve 9 can be rotated and adjusted by utilizing the telescopic movement of the spray assembly 6 during the angle adjustment process, thereby achieving the blocking, closing or opening of the first spray hole 71. The blocking sleeve 9 is used to rotate and block the first spray hole 71 on either side. Such a design, such as Figure 6 As shown, when the spray assembly 6 is set vertically, the spray assembly 6 is located in the middle of the heat exchange tube bundles 4 on both sides. At this time, the baffle 9 rotates and staggers with the first spray holes 71 on both sides, and the first spray pipe 7 sprays to both sides to achieve auxiliary cooling. Figures 2 to 4As shown, when the spray assembly 6 is tilted and close to the heat exchange tube bundle 4 on one side, the second spray pipe 8 extends from the inside of the first spray pipe 7, and together they are close to the heat exchange tube bundle 4 and the heat exchange fins 5 for efficient spray cleaning, wherein the retaining sleeve 9 rotates to close the first spray hole 71 on the side away from the heat exchange fins 5, and opens the first spray hole 71 on the side close to the heat exchange fins 5 for single-sided spraying to achieve efficient pressurized cleaning and dust removal.

[0056] Furthermore, through grooves 91 are symmetrically provided on both sides of the blocking sleeve 9, and a block 92 for blocking the first spray hole 71 is formed between the two through grooves 91. A spray groove 93 is provided on the block 92. The spray groove 93 is set as a rectangle to play a role of converging. The spray groove 93 is located on the side of the block 92. The two spray grooves 93 are symmetrically provided (such as Figure 19 shown).

[0057] like Figure 12 As shown, when the spray assembly 6 is vertically positioned and located between the heat exchange tube bundles 4 on both sides, the first spray hole 71 is positioned directly opposite the through slot 91, allowing spray cooling to both sides. The first spray hole 71 sprays along the fan-shaped area, achieving large-area cooling. The through slot 91 is wide enough to avoid blocking the spray and affecting the diffuse spraying of the fan-shaped surface.

[0058] When the spray assembly 6 is tilted and close to the heat exchanger on either side, the first spray hole 71 on the side close to the heat exchange tube bundle 4 faces the spray slot 93 to enable spraying, and the first spray hole 71 on the side away from the heat exchange tube bundle 4 faces the block 92 to close the spraying. Figure 13 As shown, assuming that the stopper 92 rotates at an angle of a°, the upper stopper 92 rotates, and the upper spray slot 93 and the upper first spray hole 71 coincide with each other. The lower stopper 92 rotates, and the lower spray slot 93 and the lower first spray hole 71 are staggered. The upper spray slot 93 collects and converges the water flow sprayed from the first spray hole 71, thereby concentrating the spray for cleaning rather than fan-shaped diffusion spray, ensuring the cleaning effect. Figure 14 As shown, assuming the stopper 92 rotates by an angle of a° + b°, the upper stopper 92 rotates, causing the upper spray slot 93 to be offset from the upper first spray hole 71. The lower stopper 92 rotates, causing the lower spray slot 93 to align with the lower first spray hole 71. The lower spray slot 93 collects and converges the water flow from the first spray hole 71, thereby concentrating the spray for cleaning rather than fan-shaped diffusion, ensuring effective cleaning. In other words, by controlling the rotation angle, the first spray hole 71 on either side can be controlled to open for spraying.

[0059] like Figures 5 to 8 、 Figure 12As shown, when the spray assembly 6 is set vertically, the second spray pipe 8 is stored inside the first spray pipe 7. At this time, only the first spray pipe 7 performs auxiliary spray cooling. The blocking sleeve 9 opens the first spray hole 71. At this time, the first spray hole 71 is directly opposite the through groove 91, and the block 92 and the first spray hole 71 are staggered. The first spray pipe 7 spreads and sprays water to both sides along the fan-shaped area to achieve auxiliary cooling. Since the water sprayed from the first spray hole 71 is spread out in a fan-shaped area, as long as the spray assembly 6 is set in the middle of the radiator, the first spray pipe 7 sprays water to both sides along different heights to reach the radiator, achieving uniform heat dissipation and cooling. In this case, the spray assembly 6 does not need to slide along the third guide rod 37, and does not need to move along the length direction of the radiator to spray and cool.

[0060] like Figure 3 、 Figure 4 、 Figure 13 and Figure 14 As shown, when the spray assembly 6 is tilted and close to the heat exchange fin 5, the second spray pipe 8 extends from the inside of the first spray pipe 7, and the baffle 9 rotates to close the first spray hole 71 on the side away from the heat exchange fin 5, thereby increasing the overall spray water pressure and adjusting the distance between the first spray hole 71 and the heat exchange fin 5 so that the spray assembly 6 is close to the heat exchange fin 5. At the same time, the first spray hole 71 and the spray slot 93 are aligned to achieve a convergence effect, and the first spray hole 71 on the side close to the heat exchange fin 5 is opened to spray out a single high-pressure spray to achieve efficient spray cleaning of the heat exchange fin 5. This structure takes into account both efficient spray-assisted cooling and efficient cleaning and dust removal of the heat exchange fin 5. In addition, the telescopically adjustable spray assembly 6 can adapt to the position of the upper fan 2. The spray assembly 6 rotates within the triangular area and will not collide or interfere with the fan 2. This can not only ensure the rational use of space, but also ensure that efficient spray cooling and efficient cleaning and dust removal can be achieved at different positions.

[0061] When the spray assembly 6 is tilted and close to the heat exchange fin 5 on either side, in order to ensure that the blocking sleeve 9 accurately positions and blocks the first spray hole 71, it is only necessary to control the tilt angle of the spray assembly 6, such as Figure 6 As shown, when the spray assembly 6 moves laterally and tilts to both sides, it is only necessary to control the distance of the lateral movement to control the rotation angle of the blocking sleeve 9, thereby achieving accurate blocking and opening of the first spray hole 71 on either side.

[0062] Example 3

[0063] In order to further improve the heat exchange efficiency and ensure the cleaning and dust removal effect of the heat exchange fins 5, further optimization design is made.

[0064] like Figure 1 、 Figure 2 and Figure 20As shown, the heat exchange tube bundle 4 is arranged in a U-shape. Several heat exchange fins 5 are sheathed around the outer sides of the heat exchange tube bundles 4. The heat exchange fins 5 include a V-shaped first fin 51 and second fins 52 integrally connected to the first fin 51 on either side. The heat exchange tube bundle 4 passes through the second fin 52 on one side and then bends back through the second fin 52 on the other side. The first fin 51 and the second fin 52 are provided with a plurality of tube holes 53 through which the heat exchange tube bundle 4 passes. The ends of the heat exchange tube bundle 4 are connected to a first pipe 41 and a second pipe 42, respectively. The first pipe 41 and the second pipe 42 are provided with a plurality of connecting flanges 43.

[0065] In view of the structure of this heat exchanger, the bent heat exchange fins 5 are used to increase the heat exchange area in a narrower space and improve the heat exchange efficiency. At the same time, when the spray assembly 6 is close to the heat exchange fins 5 for spraying and cleaning, the spray water is sprayed in from between the adjacent second fins 52, and after being guided by the V-shaped structure of the first fin 51, it reaches the second fin 52 on the other side and is sprayed out. This bent structure fully disturbs and disperses the cleaning water flow, so that it is dispersed along the bent channel, and then both sides of the heat dissipation fins can be fully disturbed and cleaned. At the same time, this bent heat exchange fin 5 structure can divert the water flow from one end of the heat exchange fin 5 to the other end, realizing the cleaning operation of the entire section of the heat exchange fin 5. When the traditional flat fins are cleaned by water flow, the water flow flushes in a straight line, and the adjacent fins cannot be disturbed and cleaned, resulting in low cleaning efficiency.

[0066] like Figures 1 to 8 As shown, the heat exchange box has air inlet grilles 32 on both sides, which serve as air filters. A top plate 34 is provided at the upper end of the heat exchange box, and a recovery box 3 is provided at the bottom side of the heat exchange box. A conical base 31 is provided at the upper end of the recovery box 3. The bottom ends of the heat exchange fins 5 are supported on the base 31, and the upper ends of the heat exchange fins 5 are placed close to the top plate 34. A return channel 33 is provided in the middle of the base 31. There is a gap between the heat exchange fins 5 and the air inlet grille 32. A collection tank 3b is formed between the bottom side of the base 31 and the air inlet grille 32. The collection tank 3b is connected to the recovery box 3 on the bottom side. The interior of the recovery box 3 is a recovery chamber 3a. In this structure, a recovery tank 3 is installed on the bottom side of the heat exchanger to recycle water. When the spray assembly 6 is in the middle, some of the spray water flows back to the recovery tank 3 through the return channel 33. The remaining spray water overflows from the sides and is recovered in the recovery tank 3 after passing through the collection tank 3b. When the spray assembly 6 is located on both sides for cleaning, most of the spray water will penetrate the heat exchange fins 5, eventually flowing down the other end of the heat exchange fins 5 to the collection tank 3b before being recovered in the recovery tank 3. This structure can fully recycle and reuse water resources.

[0067] Secondly, due to the bent structure of the heat exchange fins 5, in addition to being able to fully disturb and drain the water flow to achieve efficient and thorough cleaning during cleaning, due to the bent drainage structure, the water source will not directly rush out vertically to the air inlet grille 32, resulting in the waste of cleaning water source sprayed out from the air inlet grille 32. This kind of bent structure can slow down and buffer the cleaning water after drainage in the later process, and ultimately ensure that most of the cleaning water source will slowly overflow from the other end of the heat exchange fin 5 after disturbed cleaning, thereby reducing the waste of vertical spraying of water source.

[0068] In the present invention, a first joint 74 and a second joint 75 are provided at the bottom end of the first spray pipe 7. The first joint 74 communicates with the first spray pipe 7, and the second joint 75 communicates with the first inner tube 72. The first joint 74 and the second joint 75 are respectively connected to a water pump via pipes. The water pump is mounted on the bottom side of the first spray pipe 7, and the water inlet pipe of the water pump extends into the recovery tank 3 through the return channel 33. This structure can achieve dual spraying operation, that is, the first spray pipe 7 and the second spray pipe 8 both spray water.

[0069] In the present invention, the screw nut 96 structure is used to realize the rotation adjustment of the stopper sleeve 9, and the first sealing ring 731 and the second sealing ring 84 are designed to achieve the sealing effect. However, in order to improve the sealing effect of the screw segment 82 and the screw nut 96 and improve the waterproof performance, a more preferred spray cleaning method is proposed. The first joint 74 is connected to the water pump, and the second joint 75 is connected to the air pump. Under this option, when the spray assembly 6 is set in the middle position, the second spray pipe 8 is received inside the first spray pipe 7, and the second spray hole 81 of the second spray pipe 8 is located inside the second inner tube 73. At this time, the first spray pipe 7 sprays water to achieve cooling, but due to the presence of the fan 2, there is a possibility that the water mist may be drawn up, resulting in water entering the second inner tube 73. Therefore, the second spray pipe 8 sprays high-pressure gas at this time to ensure that the interior of the second inner tube 73 is filled with dry gas, thereby achieving efficient waterproofness and ensuring the normal operation of the screw segment 82 and the screw nut 96. When the spray assembly 6 is set on both sides, the second spray pipe 8 extends from the inside of the first spray pipe 7. At this time, the first spray pipe 7 sprays water to achieve cleaning. The first spray pipe 7 also needs to achieve the same function. In this case, the second spray pipe 8 sprays high-pressure gas to achieve spray cleaning of the upper heat exchange fins 5. At the same time, when the second spray pipe 8 sprays air, it can prevent water mist from gathering at the top of the first spray pipe 7, ensuring the waterproof sealing performance at the position of the second sealing ring 84.

[0070] like Figure 1 and Figure 2As shown, in the present invention, the fan 2 includes a fan housing 21, within which are disposed fan blades 23, which are driven to rotate by a drive device 22. A filter 24 is disposed at the upper end of the fan housing 21. The fan housing 21 is mounted at the upper end of the frame 1, facing the recovery box 3. Limit blocks 12 are symmetrically disposed on both sides of the frame 1, and are disposed in close proximity to the top plate 34.

[0071] Example 4

[0072] In the present invention, in order to avoid setting too many driving parts on the air cooler, the angle adjustment and mobile spraying of the spray assembly 6 are achieved by manual assistance.

[0073] like Figures 22 to 24 As shown, second pull ropes 86 are fixedly provided on both sides of the upper end of the second sliding sleeve 85. The second pull ropes 86 pass through the limit blocks 12 at both ends to the outside. The exit position of the second pull rope 86 is located in the middle of the frame 1. A second reel mechanism 87 is provided on the outside of the limit block 12. The second reel mechanism 87 is set in the middle of the frame 1. The second reel mechanism 87 is provided on the limit blocks 12 on both sides. The second pull rope 86 is wound around the second reel mechanism 87. Therefore, when driving the second guide rod 36 to move and adjust the angle of the spray assembly 6, it is only necessary to operate the second reel mechanism 87 at one end. The second reel mechanism 87 on one side is wound, and the second reel mechanism 87 on the other side is unwound synchronously. Then, the second guide rod 36 can be moved along the first guide rod 35 to adjust the angle of the spray assembly 6.

[0074] like Figures 22 to 24 As shown, a rotating sleeve 97 is rotatably provided in the middle of the stopper sleeve 9, and first pull ropes 98 are fixedly provided on both sides of the rotating sleeve 97. The first pull ropes 98 pass through the side panels 11 at both ends to the outside, and a first reel mechanism 99 is provided on the outside of the side panels 11. That is, a first reel mechanism 99 is provided on both sides of the side panels 11, and the first pull ropes 98 are respectively wound on the first reel mechanisms 99. Therefore, when driving the spray assembly 6 to move, it is only necessary to operate the first reel mechanism 99 at one end, and the first reel mechanism 99 on one side is wound, and the first reel mechanism 99 on the other side is unwound synchronously, so that the spray assembly 6 can be moved and adjusted along the second guide rod 36.

[0075] This structure utilizes a pull rope mechanism, through which two first pull ropes 98, two first reel mechanisms 99, two second pull ropes 86 and two second reel mechanisms 87 cooperate with each other, to manually assist in achieving angle adjustment and mobile spraying of the spray assembly 6.

[0076] The present invention provides a method for using a natural gas TEG dehydration regeneration tail gas condensation heat exchange device. When the spray assembly 6 is set vertically, the second spray pipe 8 is stored inside the first spray pipe 7. Only the first spray pipe 7 is working. The baffle 9 opens the first spray holes 71 on both sides of the first spray pipe 7. The first spray pipe 7 spreads and sprays along the fan-shaped area on both sides to cover the internal space to achieve auxiliary cooling. At this time, the spray assembly 6 is in the middle position of the heat exchanger (such as Figure 23 As shown), during the spray cooling process, there is no need to move and adjust the spray position to achieve spray cooling in all directions, ensuring that the air cooler can use the spray component 6 for auxiliary cooling during normal operation, thereby improving the efficiency of the air cooler. At the same time, during the operation of the air cooler, there is no need to move the spray component 6 to ensure the normal operation of the equipment.

[0077] In the present invention, when the spray assembly 6 is tilted and close to the heat exchange fin 5, the second spray pipe 8 extends from the inside of the first spray pipe 7, and the baffle sleeve 9 rotates to close the first spray hole 71 on the side away from the heat exchange fin 5, and opens the first spray hole 71 on the side close to the heat exchange fin 5 to spray on one side to achieve spray cleaning of the heat exchange fin 5.

[0078] The specific steps are as follows: manually operate the second reel mechanism 87 at one end, so that the second reel mechanism 87 on one side reels and the second reel mechanism 87 on the other side unwinds simultaneously, so that the second guide rod 36 moves along the first guide rod 35, so as to adjust the angle of the spray assembly 6 and make the spray assembly 6 close to the heat exchange fin 5 on one side. During the process of adjusting the angle of the spray assembly 6, the retaining sleeve 9 rotates synchronously. Then, drive the spray assembly 6 to move, operate the first reel mechanism 99 at one end, so that the first reel mechanism 99 on one side reels and the first reel mechanism 99 on the other side unwinds simultaneously. At the same time, the two second reel mechanisms 87 unwind synchronously, so that the spray assembly 6 moves along the second guide rod 36 and realizes the mobile spray cleaning of the spray assembly 6.

[0079] In the present invention, the spray angle is adjusted by tilting the spray assembly 6, and at the same time, the spray assembly 6 is linked to perform telescopic movement, and then the baffle 9 is linked to control the rotation, and the first spray holes 71 on both sides of the first spray pipe 7 are adjusted, so that the first spray holes 71 on one side are closed, and the first spray holes 71 on the other side are opened for spraying. The baffle 9 is used to cover the first spray holes 71 on one side to achieve a pressurization operation, and at the same time, the spray trough 93 is used to gather the fan-shaped water flow of the first spray hole 71 and spray it out, thereby improving the efficiency of cleaning and dust removal. When the spray assembly 6 is tilted, it is necessary to move the spray assembly 6 so that it moves along the length direction to clean the heat exchange fins 5 at different positions one by one, and this can be achieved by reeling and unreeling the first reel mechanism 99 and the second reel mechanism 87. When cleaning the heat exchange fins 5, the medium is sprayed on both sides of the second spray pipe 8. However, since the spray length of the second spray pipe 8 is relatively short, the baffle sleeve 9 structure is no longer designed to seal and close the second spray hole 81 of the second spray pipe 8. At the same time, multiple groups of second spray holes 81 spray gas to ensure efficient cleaning of the heat exchange fins 5. At the same time, multiple groups of spraying methods ensure that there is no water mist around the joint between the first spray pipe 7 and the second spray pipe 8, ensuring sealing.

[0080] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment, comprising a frame, a heat exchanger, a fan, and a spray assembly. The heat exchangers are symmetrically arranged on both sides of the frame. The heat exchangers include a V-shaped heat exchange box and a heat exchange tube bundle. The interior of the heat exchange box is filled with a plurality of heat exchange tube bundles. The characteristics are: A fan is provided directly above the heat exchange box, two first guide rods are horizontally provided at the upper end of the heat exchange box, the first guide rods are located at the bottom side of the fan, a second guide rod is slidably provided on the two first guide rods, and a third guide rod parallel to the second guide rod is provided in the middle of the bottom side of the heat exchange box; The spray assembly adopts a retractable multi-section spray pipe structure, one end of the spray assembly is slidably arranged on the second guide rod, and the other end of the spray assembly is slidably arranged on the third guide rod; The spray assembly includes a first spray pipe, a second spray pipe and a baffle sleeve. The first spray pipe is provided with a first inner tube and a second inner tube of different diameters. One end of the second spray pipe is sequentially extended with a screw rod section and a polished rod section. A plurality of first spray holes are symmetrically distributed on both sides of the first spray pipe, and a plurality of second spray holes are symmetrically distributed on both sides of the second spray pipe. The first spray holes and the second spray holes have the same spray direction. The outer wall of the first spray pipe is rotatably provided with a stop sleeve, and the stop sleeve is used to rotate to block the first spray hole on either side; the outer wall of the polished rod section slides closely against the inner wall of the first inner tube, and the inner wall of the second inner tube is provided with a first sealing ring, and the first sealing ring is arranged closely against the outer wall of the polished rod section; the screw rod section is cooperated with a screw nut, and a guide sleeve is provided on one side of the screw nut, and the screw nut and guide sleeve are arranged inside the second inner tube, and one end of the guide sleeve is provided with a mounting flange, and the mounting flange is connected to the end face of the stop sleeve; one end of the first spray pipe is provided with a first sliding sleeve slidably connected to the third guide rod, and one end of the second spray pipe is provided with a second sliding sleeve slidably connected to the second guide rod; When the first spray pipe and the second spray pipe extend and retract, the linked screw segment extends and retracts, driving the screw nut to rotate and thus realizing the rotation adjustment of the stopper sleeve; Through grooves are symmetrically provided on both sides of the baffle, and a block for blocking the first spray hole is formed between the two through grooves. A spray groove is provided on the block, and the two spray grooves are symmetrically arranged. When the spray assembly is vertically arranged and located in the middle of the heat exchange tube bundles on both sides, the first spray hole is arranged opposite the through grooves. When the spray assembly is tilted and approaches the heat exchange tube bundle on either side, the first spray hole on the side close to the heat exchange tube bundle faces the spray groove to realize spraying, and the first spray hole on the side away from the heat exchange tube bundle faces the block to close the spraying.

2. The natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment according to claim 1 is characterized by: The heat exchange tube bundle is arranged in a U shape, and a plurality of heat exchange fins are provided on the outer sides of the heat exchange tube bundles. The heat exchange fins include a first fin arranged in a V shape and a second fin integrally connected to both sides of the first fin. The heat exchange tube bundle passes through the second fin on one side and bends to pass back through the second fin on the other side. When the spray assembly sprays and cleans the heat exchange fins, the spray water is sprayed in from between adjacent second fins, guided by the V-shaped structure of the first fin, and then sprayed out from the second fin on the other side.

3. The natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment according to claim 2, characterized in that: The heat exchange box has air inlet grilles on both sides, a top plate is provided at the upper end of the heat exchange box, a recovery box is provided at the bottom side of the heat exchange box, a conical base is provided at the upper end of the recovery box, the bottom ends of the heat exchange fins are supported on the base, and the upper ends of the heat exchange fins are arranged close to the top plate; a reflux channel is provided in the middle of the base, a gap is provided between the heat exchange fins and the grille, a collection tank is formed between the base and the bottom side of the grille, and the collection tank is connected to the recovery box on the bottom side.

4. The natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment according to claim 1, characterized in that: The bottom end of the first spray pipe is provided with a first joint and a second joint, the first joint is connected to the first spray pipe, and the second joint is connected to the first inner tube; the first joint and the second joint are respectively connected to the water pump through pipes, and the water pump is installed on the bottom side of the first spray pipe, and the water inlet pipe of the water pump extends into the recovery box through the reflux channel.

5. The natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment according to claim 1, characterized in that: A first joint and a second joint are provided at the bottom end of the first spray pipe, the first joint is connected to the first spray pipe, and the second joint is connected to the first inner tube; the first joint is connected to the water pump through a pipe, and the second joint is connected to the air pump through a pipe, the water pump is installed on the bottom side of the first spray pipe, and the water inlet pipe of the water pump extends into the recovery box through the reflux channel.

6. The natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment according to claim 1, characterized in that: The fan comprises a fan box, wherein fan blades are arranged inside the fan box, a filter is arranged at the upper end of the fan box, and the fan box is installed at the upper end of the frame and is arranged opposite to the recovery box.

7. The natural gas TEG dehydration regeneration tail gas condensation heat exchange equipment according to claim 3, characterized in that: Limit blocks are symmetrically arranged on both sides of the frame, and the limit blocks are arranged close to the top plate.

8. A method for dehydrating and regenerating tail gas condensation heat exchange equipment using the natural gas TEG according to any one of claims 1 to 7, characterized in that: When the spray assembly is set vertically, the second spray pipe is received inside the first spray pipe, the baffle sleeve opens the first spray hole, and the first spray pipe sprays to both sides to achieve auxiliary cooling; when the spray assembly is set tilted and close to the heat exchange fins, the second spray pipe extends from the inside of the first spray pipe, the baffle sleeve rotates to close the first spray hole on the side away from the heat exchange fins, and opens the first spray hole on the side close to the heat exchange fins to spray on one side to achieve spray cleaning of the heat exchange fins.

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