Heat exchanger using a combined liquid spraying device and absorption unit to which same is applied

Abstract

The present invention belongs to the technical field of heat exchange equipment, and discloses a heat exchanger using a combined liquid dispersion device and an absorption unit to which the heat exchanger is applied. The absorption unit includes an absorber, a regenerator, an evaporator, and a condenser. The evaporator and the absorber are arranged vertically in the same cylinder body, and the condenser and the regenerator are arranged vertically in the same cylinder body. The absorber, the regenerator, and the evaporator adopt a heat exchanger structure of a combined liquid dispersion device of a liquid drip device and a liquid spray device, and the liquid is collected in a conical liquid collecting tank, so that problems such as liquid flooding of pipes and cavitation of the liquid delivery pump caused by liquid sloshing due to the inclination or sway of the unit can be avoided. The heat transfer tubes and the tube sheets adopt special materials and an expanding and welding processing technology, so that the liquid can be evenly distributed and dispersed under the inclined or swaying state of the marine lithium bromide absorption unit, and problems such as refrigerant pollution and seawater corrosion of the unit are solved, the stability of the unit operation is ensured, and the effective utilization of energy is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchange equipment, and particularly relates to a heat exchanger adopting a combined liquid dispersion device and an absorption unit to which the heat exchanger is applied. Background Art

[0002] A lithium bromide absorption unit uses lithium bromide solution as an absorbent and water as a refrigerant, and utilizes the heat absorption during the evaporation of water under a vacuum state to achieve refrigeration. In a lithium bromide unit, the refrigerant vapor after the evaporation of the refrigerant water in the evaporator will be absorbed by the concentrated lithium bromide solution, and the solution gradually becomes dilute. This process is realized in the absorber. Then, with heat energy as the driving force, the dilute solution is heated in the generator to separate out the water content to form a concentrated solution. The refrigerant vapor condenses into water in the condenser, and after throttling, it is sent to the evaporator for evaporation again. In this way, continuous refrigeration is achieved through circulation. In order to achieve sufficient heat exchange between fluids and save the amount of solution, drip devices are mostly used for liquid distribution in the evaporator, absorber, and regenerator of the lithium bromide absorption unit. When the lithium bromide absorption unit is applied to a ship for waste heat recovery, the unit sways left and right with the waves, which has a great impact on the flow of the lithium bromide solution and the refrigerant water. The conventional liquid drip device is prone to the phenomenon of uneven drip liquid distribution. At the same time, problems such as refrigerant contamination and seawater corrosion are likely to occur with the conventional heat exchanger structure, resulting in a decline in the heat exchange performance of the unit. Therefore, how to achieve uniform distribution and dispersion of the liquid in the shipboard lithium bromide absorption unit in an inclined or swaying state, and solve problems such as refrigerant contamination and seawater corrosion of the unit to ensure the stable operation of the unit has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0003] By studying the adverse conditions affecting the operation of lithium bromide absorption units, the present invention provides a heat exchanger using a combined liquid dispersion device and an absorption unit to which it is applied. The evaporator and the absorber are arranged vertically in the same cylinder, and the condenser and the regenerator are arranged vertically in the same cylinder, effectively solving the problem that refrigerant contamination is likely to occur in traditional absorption units during tilting or swaying. The absorbers, regenerators, and evaporators adopt a heat exchanger structure with a combined liquid dispersion device of a liquid dripping device and a liquid spraying device, avoiding the influence of tilting or swaying of the unit on liquid distribution and dispersion, ensuring that the liquid can be evenly dispersed onto the heat transfer tubes during tilting or swaying of the unit, and collecting the liquid in a conical liquid collection tank, preventing liquid flooding of the tubes and cavitation of the liquid supply pump caused by liquid sloshing due to tilting or swaying of the unit, ensuring the normal flow of the liquid in each heat exchanger of the unit, being able to evenly distribute and disperse the liquid onto the heat transfer tubes, avoiding a reduction in the heat transfer performance of the unit, and ensuring that the lithium bromide absorption unit can still operate normally during the swaying at sea, recovering various waste heat resources generated during the ship's voyage, producing chilled water, and achieving energy conservation and emission reduction. There are many waste heat resources that can be recovered on ships, and the demand for chilled water is also huge. This marine lithium bromide chilled water unit will effectively recover various waste heat and achieve effective utilization of energy.

[0004] The technical solution adopted by the present invention to achieve the above object is as follows:

[0005] A heat exchanger using a combined liquid dispersion device, which is composed of a liquid dripping device, a liquid spraying device, heat transfer tubes, tube sheets, a cylinder, a cylinder partition plate, a cylinder liquid storage area, a cylinder partition area, a conical liquid collection tank, a liquid baffle plate, a liquid collection pipe, a cross-shaped plate, a liquid supply pump, and a support. The liquid dripping device and the liquid spraying device constitute a combined liquid dispersion device. The liquid dripping device is arranged above the heat transfer tubes, and the liquid drips and disperses downward onto the heat transfer tubes; the liquid spraying device is arranged on both sides of the heat transfer tubes, and the liquid is sprayed onto the heat transfer tubes laterally; the heat transfer tubes are made of titanium tubes, and the tube sheets are made of titanium composite plates; a swelling and welding processing technology is adopted between the heat transfer tubes and the tube sheets; the tube sheets are arranged on both sides of the cylinder, and the combined liquid dispersion device and the heat transfer tubes are arranged in the upper part of the cylinder; a cylinder partition plate is arranged in the lower part of the cylinder, dividing the cylinder into a cylinder liquid storage area and a cylinder partition area. The liquid is stored in the cylinder liquid storage area, and the cylinder partition area does not store liquid; a conical liquid collection tank is arranged at the bottom of the cylinder, and a liquid baffle plate is arranged in the conical liquid collection tank to collect the liquid in the conical liquid collection tank; a liquid collection pipe is arranged at the lower part of the conical liquid collection tank, and a cross-shaped plate is arranged on the liquid collection pipe; a liquid supply pump is arranged at the bottom of the liquid collection pipe; supports are arranged at the lower parts of the tube sheets and the cylinder, and the supports adopt a combined connection structure of a steel section and a flat plate.

[0006] The longitudinal downward disk dripping disk teeth and the transverse downward disk dripping disk teeth are serrated dripping plates.

[0007] The described liquid dripping device adopts a multi-layer partition diversion structure, longitudinal lower disk dripping disk teeth, and transverse lower disk dripping disk teeth adopt a dripping and liquid distribution method with a serrated dripping plate. It is composed of a dripping liquid collecting pipe group, a dripping upper disk, a longitudinal dripping lower disk, and a transverse dripping lower disk. The dripping liquid collecting pipe group and several dripping upper disks form a closed dripping and spreading structure. The longitudinal dripping lower disk and the transverse dripping lower disk form a combined lower disk, adopting a combination of an open partition liquid storage structure and a closed partition distribution and dripping structure. A liquid diversion structure is adopted between the dripping upper disk, the longitudinal dripping lower disk, and the transverse dripping lower disk.

[0008] The described longitudinal dripping lower disk and the transverse dripping lower disk are vertically arranged. The transverse dripping lower disk is arranged parallel to the length direction of the heat transfer tube, and the longitudinal dripping lower disk is arranged perpendicular to the length direction of the heat transfer tube. The longitudinal dripping lower disk is arranged at both ends of the heat transfer tube.

[0009] The described liquid spraying device adopts a closed spraying structure. The liquid spraying device is composed of a spraying liquid collecting pipe liquid inlet, a spraying liquid collecting pipe, a spraying liquid collecting pipe sealing plate, spraying nozzles, and spraying dispersed injection holes. Both sides of the spraying liquid collecting pipe are welded and closed by the spraying liquid collecting pipe sealing plate. A number of spraying nozzles are evenly arranged on the spraying liquid collecting pipe, and spraying dispersed injection holes are arranged on the spraying nozzles. The liquid spraying device is arranged on both sides of the heat transfer tube for side spraying of the liquid.

[0010] The present invention also provides an absorption unit applied to a heat exchanger using the above combined liquid spreading device, including an absorber, a regenerator, an evaporator, and a condenser. Among them, the evaporator and the absorber are arranged vertically in the same cylinder. The refrigerant evaporation water vapor in the evaporator flows downward to the absorber for diluting the concentrated liquid. The condenser and the regenerator are arranged vertically in the same cylinder. The dilute liquid concentrated refrigerant vapor in the regenerator flows upward to the condenser for condensation. The absorber, the regenerator, and the evaporator adopt the heat exchanger structure of the combined liquid spreading device.

[0011] The beneficial effects of the present invention compared with the prior art are:

[0012] 1. For the absorption unit applied to a heat exchanger using the combined liquid spreading device, the evaporator and the absorber are arranged vertically in the same cylinder. The refrigerant evaporation water vapor in the evaporator flows downward to the absorber for diluting the concentrated liquid. The condenser and the regenerator are arranged vertically in the same cylinder. The dilute liquid concentrated refrigerant vapor in the regenerator flows upward to the condenser for condensation, effectively solving the problem that the refrigerant is easily polluted in the traditional absorption unit in an inclined state or during the swinging process.

[0013] 2. The heat exchanger with a combined liquid distribution device and the absorption unit using the same. The absorbers, regenerators, and evaporators adopt the heat exchanger structure with a combined liquid distribution device of a liquid dripping device and a liquid spraying device, which avoids the influence of the inclination or swaying process of the unit on liquid distribution, and ensures that the liquid can be evenly distributed onto the heat transfer tubes during the inclination state or swaying process of the unit. A partition board is arranged at the lower part of the cylinder body to divide the cylinder body into a liquid storage area and a partition area. The liquid is stored in the liquid storage area of the cylinder body, effectively solving the problem of liquid accumulation on one side of the cylinder body during the inclination and swaying process of the unit, which may cause flooding of the tubes. By adding a partition area in the cylinder body, the liquid filling amount is reduced. A conical liquid collection tank is arranged at the bottom of the cylinder body, and a liquid baffle is arranged in the conical liquid collection tank to collect the liquid in the conical liquid collection tank, preventing the liquid from being dumped during the inclination and swaying process of the unit, resulting in insufficient liquid storage in the conical liquid collection tank, thereby avoiding the suction cavitation of the liquid supply pump. A liquid collection pipe is arranged at the lower part of the conical liquid collection tank, and a cross-shaped plate is arranged on the liquid collection pipe, further avoiding the cavitation problem of the liquid supply pump caused by the liquid being dumped during the inclination or swaying of the unit, ensuring the normal flow of the liquid in each heat exchanger of the unit, enabling the liquid to be evenly distributed and evenly spread onto the heat transfer tubes, avoiding the reduction of the heat transfer performance of the unit, ensuring that the lithium bromide absorption unit can still operate normally during the swaying at sea, recovering various waste heat resources generated during the ship's voyage, producing chilled water, achieving energy conservation and emission reduction. There are many waste heat resources that can be recovered on the ship, and the demand for chilled water is also huge. This marine lithium bromide chilled water unit will effectively recover various waste heat resources and realize the effective utilization of energy.

[0014] 3. The heat exchanger with a combined liquid distribution device and the absorption unit using the same. The heat transfer tubes are made of titanium tubes, and the tube sheets are made of titanium composite plates, effectively preventing the corrosion problem of seawater. The expansion welding process is adopted between the heat transfer tubes and the tube sheets to ensure the sealed connection between the heat transfer tubes and the tube sheets, and ensure the vacuum state of the unit.

[0015] 4. The heat exchanger with a combined liquid distribution device and the absorption unit using the same. Supports are arranged at the tube sheets and the lower part of the cylinder body. The supports adopt a combined closed connection structure of section steel and flat plates, effectively solving the problem of the bending deformation of the supports caused by vibration during the swaying process of the unit, ensuring that the supports can withstand the most unfavorable combination of loads that may occur under all operating conditions, and can operate stably under various conditions without excessive noise, vibration, and deformation. The unit can withstand the highest pressure and its pressure fluctuations during operation, ensuring the use safety of the unit. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a heat exchanger with a combined liquid distribution device according to the present invention;

[0017] Figure 2 It is a schematic structural diagram of the liquid dripping device of the combined liquid distribution device according to the present invention;

[0018] Figure 3 Schematic diagram of the connection structure of the drip upper tray, longitudinal drip lower tray, and transverse drip lower tray of the combined liquid spraying device of the present invention;

[0019] Figure 4 Schematic diagram of the liquid collecting pipe group structure of the combined liquid spraying device of the present invention;

[0020] Figure 5 Schematic diagram of the drip upper tray structure of the combined liquid spraying device of the present invention;

[0021] Figure 6 Schematic diagram of the longitudinal drip lower tray structure of the combined liquid spraying device of the present invention;

[0022] Figure 7 Schematic diagram of the transverse drip lower tray structure of the combined liquid spraying device of the present invention;

[0023] Figure 8 Schematic diagram of the liquid spraying device structure of the combined liquid spraying device of the present invention;

[0024] Figure 9 Schematic diagram of the liquid spraying structure during the inclined swing process of the combined liquid spraying device of the present invention;

[0025] Figure 10 Schematic diagram of the structure of a heat exchanger using a combined liquid spraying device of the present invention and an absorption unit using the same;

[0026] Figure 11 Structural diagram of a traditional absorption unit;

[0027] In the figure: 1 - absorber, 2 - regenerator, 3 - evaporator, 4 - condenser, 5 - cooling water inlet, 6 - cooling water outlet, 7 - hot water inlet, 8 - hot water outlet, 9 - cold water inlet, 10 - cold water outlet, 11 - refrigerant evaporation water vapor, 12 - dilute solution concentrated refrigerant vapor, 13 - refrigerant evaporation water vapor flow direction, 14 - dilute solution concentrated refrigerant vapor flow direction, 1-1 - liquid dripping device, 1-2 - liquid spraying device, 1-3 - heat transfer tube, 1-4 - tube sheet, 1-5 - cylinder body, 1-6 - cylinder body partition plate, 1-7 - cylinder body liquid storage area, 1-8 - cylinder body partition area, 1-9 - conical liquid collecting tank, 1-10 - liquid baffle, 1-11 - liquid collecting pipe, 1-12 - cross-shaped plate, 1-13 - liquid delivery pump, 1-14 - support, 1-101 - dripping liquid collecting pipe group, 1-102 - upper dripping plate, 1-103 - longitudinal lower dripping plate, 1-104 - transverse lower dripping plate, 1-101A - dripping liquid collecting pipe, 1-101B - liquid collecting pipe sealing plate, 1-101C - liquid collecting distribution hole, 1-101D - liquid collecting pipe liquid inlet, 1-102A - upper plate dripping pipe, 1-102B - upper plate dripping pipe sealing plate, 1-102C - upper plate distribution elbow, 1-102D - upper plate distribution straight pipe, 1-102E - upper plate distribution hole, 1-102F - upper plate liquid inlet interface, 1-103A - longitudinal lower plate liquid storage tray, 1-103B - longitudinal lower plate partition board, 1-103C - longitudinal lower plate distribution hole, 1-103D - longitudinal lower plate liquid storage area, 1-103E - longitudinal lower plate dripping tray teeth, 1-103F - longitudinal lower plate liquid separation orifice plate, 1-103G - longitudinal lower plate tray teeth separator, 1-103H - longitudinal lower plate dripping partition, 1-103I - longitudinal lower plate liquid storage area, 1-103J - longitudinal lower plate distribution and dripping area, 1-104A - transverse lower plate liquid storage tray, 1-104B - transverse lower plate partition board, 1-104C - transverse lower plate distribution hole, 1-104D - transverse lower plate liquid storage partition, 1-104E - transverse lower plate dripping tray teeth, 1-104F - transverse lower plate liquid separation orifice plate, 1-104G - transverse lower plate tray teeth separator, 1-104H - transverse lower plate dripping partition, 1-104I - transverse lower plate liquid storage area, 1-104J - transverse lower plate distribution and dripping area, 1-201 - spraying liquid collecting pipe liquid inlet, 1-202 - spraying liquid collecting pipe, 1-203 - spraying liquid collecting pipe sealing plate, 1-204 - spraying nozzle, 1-205 - spraying and dispersing injection hole, 1-301 - effective dripping area of heat transfer tube, 1-302 - ineffective dripping and spraying strengthening area of heat transfer tube. Detailed implementation mode

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the specific embodiments.

[0029] Embodiment 1

[0030] AsFigure 1 A heat exchanger using a combined liquid spraying device as shown, which is composed of a liquid dripping device 1-1, a liquid spraying device 1-2, heat transfer tubes 1-3, tube sheets 1-4, a cylinder 1-5, a cylinder partition baffle 1-6, a cylinder liquid storage area 1-7, a cylinder partition area 1-8, a conical liquid collecting tank 1-9, a liquid baffle 1-10, a liquid collecting pipe 1-11, a cross-shaped plate 1-12, a liquid delivery pump 1-13, and a support 1-14. The liquid dripping device 1-1 and the liquid spraying device 1-2 form a combined liquid spraying device. The liquid dripping device 1-1 is arranged above the heat transfer tubes 1-3, and the liquid drips and spreads downwards onto the heat transfer tubes 1-3; the liquid spraying device 1-2 is arranged on both sides of the heat transfer tubes 1-3, and the liquid is sprayed onto the heat transfer tubes 1-3 laterally. The heat transfer tubes 1-3 are made of titanium tubes, and the tube sheets 1-4 are made of titanium composite plates, effectively preventing the corrosion problem of seawater. The heat transfer tubes 1-3 and the tube sheets 1-4 adopt an expansion welding process, ensuring the sealed connection between the heat transfer tubes 1-3 and the tube sheets 1-4, and ensuring the vacuum state of the unit. The tube sheets 1-4 are arranged on both sides of the cylinder 1-5, and the combined liquid spraying device and the heat transfer tubes 1-3 are arranged in the upper part of the cylinder 1-5. The cylinder partition baffle 1-6 is arranged in the lower part of the cylinder 1-5, dividing the cylinder into a cylinder liquid storage area 1-7 and a cylinder partition area 1-8. The liquid is stored in the cylinder liquid storage area 1-7, effectively solving the problem that the liquid accumulates on one side of the cylinder during the tilting and swaying process of the unit, causing the problem of flooding the tubes. The addition of the cylinder partition area 1-8 reduces the liquid filling volume. A conical liquid collecting tank 1-9 is arranged at the bottom of the cylinder 1-5, and a liquid baffle 1-10 is arranged in the conical liquid collecting tank 1-9 to collect the liquid in the conical liquid collecting tank 1-9, preventing the liquid from being dumped during the tilting and swaying process of the unit, resulting in insufficient liquid storage in the conical liquid collecting tank 1-9, thereby avoiding the suction of the liquid delivery pump 1-13 being empty. A liquid collecting pipe 1-11 is arranged at the lower part of the conical liquid collecting tank 1-9, a cross-shaped plate 1-12 is arranged on the liquid collecting pipe 1-11, and a liquid delivery pump 1-13 is arranged at the bottom of the liquid collecting pipe 1-11, further avoiding the cavitation of the liquid delivery pump 1-13. Supports 1-14 are arranged at the lower parts of the tube sheets 1-4 and the cylinder 1-5. The supports 1-14 adopt a combined closed connection structure of section steel and a flat plate, effectively solving the problem of the bending deformation of the supports caused by vibration during the swaying process of the unit, ensuring that the supports 1-14 can withstand the most unfavorable combination of loads that may occur under all operating conditions, and being able to operate smoothly under various conditions without excessive noise, vibration, and deformation. The unit can withstand the highest pressure and its pressure fluctuations during operation, ensuring the safety of use of the unit.

[0031] As Figure 2 and Figure 3The liquid dripping device 1-1 shown adopts a multi-layer partition diversion structure. The longitudinal lower plate dripping plate teeth 1-103E and the transverse lower plate dripping plate teeth 1-104E adopt a dripping and liquid distribution method with a serrated dripping plate, and it is composed of a dripping liquid collecting pipe group 1-101, a dripping upper plate 1-102, a longitudinal dripping lower plate 1-103, and a transverse dripping lower plate 1-104. The dripping liquid collecting pipe group 1-101 and several dripping upper plates 1-102 form a closed dripping and spreading structure. The longitudinal dripping lower plate 1-103 and the transverse dripping lower plate 1-104 form a combined lower plate, adopting a combination of an open-type partition liquid storage structure and a closed-type partition distribution and dripping structure. A liquid diversion structure is adopted between the dripping upper plate 1-102, the longitudinal dripping lower plate 1-103, and the transverse dripping lower plate 1-104. As Figure 4 The shown dripping liquid collecting pipe group 1-101 is composed of a dripping liquid collecting pipe 1-101A, a liquid collecting pipe sealing plate 1-101B, a liquid collecting and distributing hole 1-101C, and a liquid collecting pipe liquid inlet 1-101D to form a closed structure. The two sides of the dripping liquid collecting pipe 1-101A are welded and sealed by the liquid collecting pipe sealing plate 1-101B. A liquid collecting pipe liquid inlet 1-101D is arranged on the dripping liquid collecting pipe 1-101A, and several liquid collecting and distributing holes 1-101C are evenly arranged on the dripping liquid collecting pipe 1-101A. The liquid enters the dripping liquid collecting pipe group 1-101 from the liquid collecting pipe liquid inlet 1-101D, and the liquid is evenly distributed by the liquid collecting and distributing holes 1-101C and then flows out of the dripping liquid collecting pipe group 1-101; As Figure 5As shown in the figure, the drip upper tray 1-102 forms a closed structure composed of an upper tray drip pipe 1-102A, an upper tray drip pipe sealing plate 1-102B, an upper tray distribution elbow 1-102C, an upper tray distribution straight pipe 1-102D, an upper tray distribution hole 1-102E, and an upper tray liquid inlet interface 1-102F. The two sides of the upper tray drip pipe 1-102A are welded and closed by the upper tray drip pipe sealing plate 1-102B. The upper tray liquid inlet interface 1-102F is arranged on the upper tray drip pipe 1-102A. A number of upper tray distribution holes 1-102E are evenly arranged on the lower side, left side, and right side of the upper tray drip pipe 1-102A. The left and right sides of the upper tray drip pipe 1-102A are connected to the upper tray distribution elbow 1-102C, and the lower side of the upper tray drip pipe 1-102A is connected to the upper tray distribution straight pipe 1-102D. The upper tray liquid inlet interface 1-102F is connected to the drip liquid collecting pipe 1-101A on the drip liquid collecting pipe group 1-101, and the upper tray liquid inlet interface 1-102F corresponds one-to-one with the liquid collecting distribution hole 1-101C on the drip liquid collecting pipe group 1-101. Liquid enters the upper tray drip pipe 1-102A from the upper tray liquid inlet interface 1-102F. After being evenly distributed by the upper tray distribution holes 1-102E, the liquid flows out of the drip upper tray 1-102 from the upper tray distribution elbow 1-102C and the upper tray distribution straight pipe 1-102D, ensuring that the drip liquid collecting pipe group 1-101 and the drip upper tray 1-102 are always in a full liquid state, and avoiding the occurrence of liquid splashing when the open upper tray structure is tilted or swayed, resulting in no liquid flowing down from the drip upper tray 1-102.

[0032] The drip longitudinal lower tray 1-103 adopts a combination of an open-type partitioned liquid storage structure and a closed-type partitioned distribution and drip structure. A liquid diversion structure is adopted between the drip upper tray 1-102 and the drip longitudinal lower tray 1-103, such as Figure 6The drip vertical lower tray 1-103 shown is composed of a vertical lower tray liquid storage area 1-103I and a vertical lower tray dispensing and dripping area 1-103J. The vertical lower tray liquid storage area 1-103I adopts an open-type partitioned liquid storage structure, and the vertical lower tray dispensing and dripping area 1-103J adopts a closed-type partitioned dispensing and dripping structure. The vertical lower tray liquid storage area 1-103I is composed of a vertical lower tray liquid storage tray 1-103A, a vertical lower tray partition plate 1-103B, a vertical lower tray dispensing hole 1-103C, and a vertical lower tray liquid storage area 1-103D. The vertical lower tray liquid storage tray 1-103A is separated by the vertical lower tray partition plate 1-103B into several liquid storage partitions to form the vertical lower tray liquid storage area 1-103D, and a number of vertical lower tray dispensing holes 1-103C are evenly arranged on the vertical lower tray liquid storage tray 1-103A; the vertical lower tray dispensing and dripping area 1-103J is composed of a vertical lower tray dripping tray teeth 1-103E, a vertical lower tray liquid separating hole plate 1-103F, a vertical lower tray tray teeth separator 1-103G, and a vertical lower tray dripping partition 1-103H. The dispensing and dripping area composed of the vertical lower tray dripping tray teeth 1-103E and the vertical lower tray liquid separating hole plate 1-103F is separated by the vertical lower tray tray teeth separator 1-103G into several dripping partitions to form the vertical lower tray dripping partition 1-103H.

[0033] The drip horizontal lower tray 1-104 adopts a combination of an open-type partitioned liquid storage structure and a closed-type partitioned dispensing and dripping structure, and a liquid diversion structure is adopted between the drip upper tray 1-102 and the drip horizontal lower tray 1-104, such as Figure 7 The drip horizontal lower tray 1-104 shown is composed of a horizontal lower tray liquid storage area 1-104I and a horizontal lower tray dispensing and dripping area 1-104J. The horizontal lower tray liquid storage area 1-104I adopts an open-type partitioned liquid storage structure, and the horizontal lower tray dispensing and dripping area 1-104J adopts a closed-type partitioned dispensing and dripping structure. The horizontal lower tray liquid storage area 1-104I is composed of a horizontal lower tray liquid storage tray 1-104A, a horizontal lower tray partition plate 1-104B, a horizontal lower tray dispensing hole 1-104C, and a horizontal lower tray liquid storage partition 1-104D. The horizontal lower tray liquid storage tray 1-104A is separated by the horizontal lower tray partition plate 1-104B into several liquid storage partitions to form the horizontal lower tray liquid storage partition 1-104D, and a number of horizontal lower tray dispensing holes 1-104C are evenly arranged on the horizontal lower tray liquid storage tray 1-104A; the horizontal lower tray dispensing and dripping area 1-104J is composed of a horizontal lower tray dripping tray teeth 1-104E, a horizontal lower tray liquid separating hole plate 1-104F, a horizontal lower tray tray teeth separator 1-104G, and a horizontal lower tray dripping partition 1-104H. The dispensing and dripping area composed of the horizontal lower tray dripping tray teeth 1-104E and the horizontal lower tray liquid separating hole plate 1-104F is separated by the horizontal lower tray tray teeth separator 1-104G into several dripping partitions to form the horizontal lower tray dripping partition 1-104H.

[0034] The upper plate distribution elbow 1-102C and the upper plate distribution straight pipe 1-102D of the drip upper plate 1-102 correspond to the longitudinal lower plate liquid storage area 1-103D of the drip longitudinal lower plate 1-103 and the transverse lower plate liquid storage sub-area 1-104D of the drip transverse lower plate 1-104 one by one. The upper plate distribution elbow 1-102C and the upper plate distribution straight pipe 1-102D are inserted into the longitudinal lower plate liquid storage area 1-103D of the drip longitudinal lower plate 1-103 and the transverse lower plate liquid storage sub-area 1-104D of the drip transverse lower plate 1-104. The liquid from the drip upper plate 1-102 is guided through the upper plate distribution elbow 1-102C and the upper plate distribution straight pipe 1-102D to the longitudinal lower plate liquid storage area 1-103D of the drip longitudinal lower plate 1-103 and the transverse lower plate liquid storage sub-area 1-104D of the drip transverse lower plate 1-104, preventing the liquid from spilling along the drip upper plate 1-102 during the tilting or swaying of the unit and failing to enter the longitudinal lower plate liquid storage area 1-103D of the drip longitudinal lower plate 1-103 and the transverse lower plate liquid storage sub-area 1-104D of the drip transverse lower plate 1-104, and avoiding the lack or shortage of liquid in the drip longitudinal lower plate 1-103 and the drip transverse lower plate 1-104, which may affect the distribution and dripping of the liquid. The liquid from the drip upper plate 1-102 is respectively transported to the longitudinal lower plate liquid storage area 1-103D of the drip longitudinal lower plate 1-103 and the transverse lower plate liquid storage sub-area 1-104D of the drip transverse lower plate 1-104 through the upper plate distribution elbow 1-102C and the upper plate distribution straight pipe 1-102D. The liquid is stored in the longitudinal lower plate liquid storage area 1-103D and the transverse lower plate liquid storage sub-area 1-104D, and then evenly distributed to the longitudinal lower plate dripping area 1-103H and the transverse lower plate dripping area 1-104H through the longitudinal lower plate distribution holes 1-103C and the transverse lower plate distribution holes 1-104C respectively. Finally, the liquid is evenly distributed and dripped onto the heat transfer tubes 1-3 through the longitudinal lower plate dripping plate teeth 1-103E and the transverse lower plate dripping plate teeth 1-104E, realizing the uniform distribution and dripping of the liquid even during the tilting or swaying of the unit.

[0035] The drip longitudinal lower plate 1-103 and the drip transverse lower plate 1-104 are vertically arranged. The drip transverse lower plate 1-104 is arranged parallel to the length direction of the heat transfer tubes 1-3, and the drip longitudinal lower plate 1-103 is arranged perpendicular to the length direction of the heat transfer tubes 1-3. The drip longitudinal lower plate 1-103 is arranged at both ends of the heat transfer tubes 1-3. When the unit tilts or sways longitudinally along the length direction, the liquid stored in the drip longitudinal lower plate 1-103 can be effectively distributed and dripped at both ends of the heat transfer tubes 1-3, reducing the influence of longitudinal tilting or swaying on the heat exchange of the unit.

[0036] The liquid spraying device 1-2 adopts a closed spraying structure, such as Figure 8The liquid spraying device 1-2 shown is composed of a liquid inlet 1-201 of the spraying liquid collecting pipe, a spraying liquid collecting pipe 1-202, a sealing plate 1-203 of the spraying liquid collecting pipe, a spraying nozzle 1-204, and a spraying dispersed injection hole 1-205. The two sides of the spraying liquid collecting pipe 1-202 are welded and sealed by the sealing plate 1-203 of the spraying liquid collecting pipe. A number of spraying nozzles 1-204 are evenly arranged on the spraying liquid collecting pipe 1-202, and the spraying dispersed injection hole 1-205 is arranged on the spraying nozzle 1-204. As Figure 9 In the process of the unit tilting and swaying, the shown combined liquid spreading device is divided into an effective dripping area 1-301 of the heat transfer tube and an ineffective dripping and spraying strengthening area 1-302 of the heat transfer tube. A liquid spraying device 1-2 is arranged on both sides of the heat transfer tube 1-3 for side spraying of the liquid, avoiding the influence of the unit tilting and swaying process on dripping and spreading, effectively solving the problem of poor heat transfer caused by poor liquid spreading in the ineffective dripping area of the heat transfer tube, and strengthening heat transfer by spraying. The combined liquid spreading device composed of the liquid dripping device 1-1 and the liquid spraying device 1-2 realizes the uniform spreading of the liquid on the heat transfer tube 1-3.

[0037] As Figure 10 Shown is an absorption unit using a combined liquid spreading device in a heat exchanger, including an absorber 1, a regenerator 2, an evaporator 3, and a condenser 4. The evaporator 3 is connected to a cold water inlet 9 and a cold water outlet 10, the regenerator 2 is connected to a hot water inlet 7 and a hot water outlet 8, the absorber 1 is connected to a cooling water inlet 5, and the condenser 4 is connected to a cooling water outlet 6; The evaporator 3 and the absorber 1 are arranged vertically in the same cylinder. The refrigerant evaporated water vapor 11 in the evaporator 3 flows downward along the refrigerant evaporated water vapor flow direction 13 into the absorber 1 for dilution of the concentrated liquid. The condenser 4 and the regenerator 2 are arranged vertically in the same cylinder. The dilute liquid concentrated refrigerant vapor 12 in the regenerator 2 flows upward along the dilute liquid concentrated refrigerant vapor flow direction 14 into the condenser 4 for condensation, effectively solving the problem of arranging the evaporator 3 and the absorber 1 horizontally and arranging the condenser 4 and the regenerator 2 horizontally; As Figure 11 In the traditional absorption unit shown, refrigerant pollution is likely to occur during tilting or swaying. The heat exchanger structures of the absorber 1, the regenerator 2, and the evaporator 3 adopt a combined liquid spreading device, avoiding the influence of the unit tilting or swaying process on liquid distribution and spreading, ensuring that the liquid can also be evenly spread onto the heat transfer tube 1-3 during the unit tilting or swaying, and preventing liquid from being thrown due to the unit tilting or swaying, effectively solving the problems of liquid flooding the tube and cavitation of the liquid delivery pump 1-13 caused by the liquid gathering on one side of the cylinder 1-5 during the unit tilting or swaying.

[0038] The up, down, left, and right mentioned in the present invention are only for convenient description and are not limitations of the protection scope.

[0039] The above-described embodiments are only the preferred embodiments of the present invention, and not all the feasible embodiments of the present invention. For those of ordinary skill in the art, any obvious changes made without departing from the principles and spirit of the present invention should be considered to be included within the scope of protection of the claims of the present invention.

Claims

1. A heat exchanger using a combined liquid spraying device, characterized in that, It is composed of a liquid dripping device (1-1), a liquid spraying device (1-2), a heat transfer tube (1-3), a tube sheet (1-4), a cylinder body (1-5), a cylinder body partition baffle (1-6), a cylinder body liquid storage area (1-7), a cylinder body partition area (1-8), a conical liquid collecting tank (1-9), a liquid retaining plate (1-10), a liquid collecting pipe (1-11), a cross-shaped plate (1-12), a liquid delivery pump (1-13), and a support (1-14). The liquid dripping device (1-1) and the liquid spraying device (1-2) form a combined liquid dispersion device. The liquid dripping device (1-1) is arranged above the heat transfer tube (1-3), and the liquid drips and disperses downward onto the heat transfer tube (1-3); the liquid spraying device (1-2) is arranged on both sides of the heat transfer tube 1-3, and the liquid is sprayed onto the heat transfer tube (1-3) laterally; the heat transfer tube (1-3) is made of titanium tube, and the tube sheet (1-4) is made of titanium composite plate; a swelling and welding processing technology is adopted between the heat transfer tube (1-3) and the tube sheet (1-4); the tube sheet (1-4) is arranged on both sides of the cylinder body (1-5), and the combined liquid dispersion device and the heat transfer tube (1-3) are arranged in the upper part of the cylinder body (1-5); a cylinder body partition baffle (1-6) is arranged in the lower part of the cylinder body (1-5), dividing the cylinder body into a cylinder body liquid storage area (1-7) and a cylinder body partition area (1-8). The liquid is stored in the cylinder body liquid storage area (1-7), and the cylinder body partition area (1-8) does not store liquid; a conical liquid collecting tank (1-9) is arranged at the bottom of the cylinder body (1-5), and a liquid retaining plate (1-10) is arranged in the conical liquid collecting tank (1-9) to collect the liquid in the conical liquid collecting tank (1-9); a liquid collecting pipe (1-11) is arranged at the lower part of the conical liquid collecting tank (1-9), and a cross-shaped plate (1-12) is arranged on the liquid collecting pipe (1-11); a liquid delivery pump (1-13) is arranged at the bottom of the liquid collecting pipe (1-11); supports (1-14) are arranged at the lower parts of the tube sheet (1-4) and the cylinder body (1-5), and the support (1-14) adopts a combined connection structure of section steel and a flat plate; the liquid dripping device (1-1) adopts a multi-layer partitioned flow guiding structure; the longitudinal lower disk dripping plate teeth (1-103E) and the transverse lower disk dripping plate teeth (1-104E) adopt a dripping and liquid distribution method of a serrated dripping plate; it is composed of a dripping and liquid collecting pipe group (1-101), a dripping upper disk (1-102), a dripping longitudinal lower disk (1-103), and a dripping transverse lower disk (1-104).

2. The heat exchanger using the combined liquid spraying device according to claim 1, characterized in that, The drip collection pipe group (1-101) and several drip upper trays (1-102) form a closed drip spraying structure. The drip longitudinal lower tray (1-103) and the drip transverse lower tray (1-104) form a combined lower tray. The open-type partition liquid storage structure and the closed-type partition distribution drip structure are combined. A liquid diversion structure is adopted between the drip upper tray (1-102), the drip longitudinal lower tray (1-103), and the drip transverse lower tray (1-104). The drip collection pipe group (1-101) consists of a drip collection pipe (1-101A), a collection pipe sealing plate (1-101B), a collection liquid distribution hole (1-101C), and a collection pipe liquid inlet (1-101D) to form a closed structure. The two sides of the drip collection pipe (1-101A) are welded and sealed by the collection pipe sealing plate (1-101B). A collection pipe liquid inlet (1-101D) is provided on the drip collection pipe (1-101A), and several collection liquid distribution holes (1-101C) are evenly arranged on the drip collection pipe (1-101A). The drip upper tray (1-102) consists of an upper tray drip pipe (1-102A), an upper tray drip pipe sealing plate (1-102B), an upper tray distribution elbow (1-102C), an upper tray distribution straight pipe (1-102D), an upper tray distribution hole (1-102E), and an upper tray liquid inlet interface (1-102F) to form a closed structure. The two sides of the upper tray drip pipe (1-102A) are welded and sealed by the upper tray drip pipe sealing plate (1-102B). An upper tray liquid inlet interface (1-102F) is provided on the upper tray drip pipe (1-102A). Several upper tray distribution holes (1-102E) are evenly arranged on the lower side, left side, and right side of the upper tray drip pipe (1-102A). The left and right sides of the upper tray drip pipe (1-102A) are connected to the upper tray distribution elbow (1-102C), and the lower side of the upper tray drip pipe (1-102A) is connected to the upper tray distribution straight pipe (1-102D). The upper tray liquid inlet interface (1-102F) is connected to the drip collection pipe (1-101A) on the drip collection pipe group (1-101), and the upper tray liquid inlet interface (1-102F) corresponds one-to-one to the collection liquid distribution hole (1-101C) on the drip collection pipe group (1-101).

3. A heat exchanger using a combined liquid spraying device according to claim 2, characterized in that: The described drip-down longitudinal lower tray (1-103) adopts a combination of an open-type partition liquid storage structure and a closed-type partition drip distribution structure. A liquid diversion structure is adopted between the drip-up upper tray (1-102) and the drip-down longitudinal lower tray (1-103). The drip-down longitudinal lower tray (1-103) consists of a longitudinal lower tray liquid storage area (1-103I) and a longitudinal lower tray drip distribution area (1-103J). The longitudinal lower tray liquid storage area (1-103I) adopts an open-type partition liquid storage structure, and the longitudinal lower tray drip distribution area (1-103J) adopts a closed-type partition drip distribution structure. The longitudinal lower tray liquid storage area (1-103I) consists of a longitudinal lower tray liquid storage tray (1-103A), a longitudinal lower tray partition board (1-103B), a longitudinal lower tray distribution hole (1-103C), and a longitudinal lower tray liquid storage area (1-103D). The longitudinal lower tray liquid storage tray (1-103A) is separated by the longitudinal lower tray partition board (1-103B) into several liquid storage partitions to form the longitudinal lower tray liquid storage area (1-103D). A number of longitudinal lower tray distribution holes (1-103C) are evenly arranged on the longitudinal lower tray liquid storage tray (1-103A). The longitudinal lower tray drip distribution area (1-103J) consists of longitudinal lower tray drip tray teeth (1-103E), a longitudinal lower tray liquid separation hole plate (1-103F), a longitudinal lower tray tray tooth separation board (1-103G), and a longitudinal lower tray drip partition (1-103H). The distribution drip area formed by the longitudinal lower tray drip tray teeth (1-103E) and the longitudinal lower tray liquid separation hole plate (1-103F) is separated by the longitudinal lower tray tray tooth separation board (1-103G) into several drip partitions to form the longitudinal lower tray drip partition (1-103H).

4. The heat exchanger using a combined liquid spraying device according to claim 3, characterized in that: The described drip irrigation horizontal lower tray (1-104) adopts a combination of an open-type partition liquid storage structure and a closed-type partition drip irrigation distribution structure. A liquid diversion structure is adopted between the drip irrigation upper tray (1-102) and the drip irrigation horizontal lower tray (1-104). The drip irrigation horizontal lower tray (1-104) consists of a horizontal lower tray liquid storage area (1-104I) and a horizontal lower tray distribution drip irrigation area (1-104J). The horizontal lower tray liquid storage area (1-104I) adopts an open-type partition liquid storage structure, and the horizontal lower tray distribution drip irrigation area (1-104J) adopts a closed-type partition drip irrigation distribution structure. The horizontal lower tray liquid storage area (1-104I) is composed of a horizontal lower tray liquid storage tray (1-104A), a horizontal lower tray partition board (1-104B), a horizontal lower tray distribution hole (1-104C), and a horizontal lower tray liquid storage partition (1-104D). The horizontal lower tray liquid storage tray (1-104A) is divided into several liquid storage partitions by the horizontal lower tray partition board (1-104B) to form the horizontal lower tray liquid storage partition (1-104D). A number of horizontal lower tray distribution holes (1-104C) are evenly arranged on the horizontal lower tray liquid storage tray (1-104A); the horizontal lower tray distribution drip irrigation area (1-104J) is composed of a horizontal lower tray drip irrigation tray tooth (1-104E), a horizontal lower tray liquid separation hole plate (1-104F), a horizontal lower tray tray tooth separation board (1-104G), and a horizontal lower tray drip irrigation partition (1-104H). The distribution drip irrigation area composed of the horizontal lower tray drip irrigation tray tooth (1-104E) and the horizontal lower tray liquid separation hole plate (1-104F) is divided into several drip irrigation partitions by the horizontal lower tray tray tooth separation board (1-104G) to form the horizontal lower tray drip irrigation partition (1-104H).

5. A heat exchanger using a combined liquid spraying device according to claim 4, characterized in that: The upper plate distribution elbow pipe (1-102C) and the upper plate distribution straight pipe (1-102D) of the dripping upper plate (1-102) correspond one by one to the longitudinal lower plate liquid storage area (1-103D) of the dripping longitudinal lower plate (1-103) and the transverse lower plate liquid storage partition area (1-104D) of the dripping transverse lower plate (1-104). The upper plate distribution elbow pipe (1-102C) and the upper plate distribution straight pipe (1-102D) are inserted into the longitudinal lower plate liquid storage area (1-103D) of the dripping longitudinal lower plate (1-103) and the transverse lower plate liquid storage partition area (1-104D) of the dripping transverse lower plate (1-104). The liquid from the dripping upper plate (1-102) is guided through the upper plate distribution elbow pipe (1-102C) and the upper plate distribution straight pipe (1-102D) to the longitudinal lower plate liquid storage area (1-103D) of the dripping longitudinal lower plate (1-103) and the transverse lower plate liquid storage partition area (1-104D) of the dripping transverse lower plate (1-104). The liquid is stored in the longitudinal lower plate liquid storage area (1-103D) and the transverse lower plate liquid storage partition area (1-104D), and then is evenly distributed to the longitudinal lower plate dripping partition area (1-103H) and the transverse lower plate dripping partition area (1-104H) through the longitudinal lower plate distribution holes (1-103C) and the transverse lower plate distribution holes (1-104C) respectively. Finally, the liquid is evenly dripped onto the heat transfer tubes (1-3) through the longitudinal lower plate dripping disc teeth (1-103E) and the transverse lower plate dripping disc teeth (1-104E).

6. The heat exchanger using a combined liquid spraying device according to claim 5, characterized in that: The dripping longitudinal lower plate (1-103) and the dripping transverse lower plate (1-104) are vertically arranged. The dripping transverse lower plate (1-104) is arranged parallel to the length direction of the heat transfer tubes (1-3), and the dripping longitudinal lower plate (1-103) is arranged perpendicular to the length direction of the heat transfer tubes (1-3). The dripping longitudinal lower plate (1-103) is arranged at both ends of the heat transfer tubes (1-3).

7. A heat exchanger using a combined liquid spraying device according to claim 1, characterized in that: The liquid spraying device (1-2) adopts a closed spraying structure. The liquid spraying device (1-2) consists of a spraying collecting pipe liquid inlet (1-201), a spraying collecting pipe (1-202), a spraying collecting pipe sealing plate (1-203), spraying nozzles (1-204), and spraying dispersed injection holes (1-205). Both sides of the spraying collecting pipe (1-202) are welded and closed by the spraying collecting pipe sealing plate (1-203). A number of spraying nozzles (1-204) are evenly arranged on the spraying collecting pipe (1-202). Spraying dispersed injection holes (1-205) are arranged on the spraying nozzles (1-204). The liquid spraying device (1-2) is arranged on both sides of the heat transfer tubes (1-3) for side spraying of the liquid.

8. An absorption unit using a heat exchanger with a combined liquid spraying device as described in any one of claims 1 - 7, characterized in that: It includes an absorber (1), a regenerator (2), an evaporator (3), and a condenser (4). Among them, the evaporator (3) and the absorber (1) are arranged vertically in the same cylinder. The refrigerant evaporation water vapor (11) in the evaporator (3) flows downward into the absorber (1) to dilute the concentrated liquid. The condenser (4) and the regenerator (2) are arranged vertically in the same cylinder. The dilute liquid concentrated refrigerant vapor (12) in the regenerator (2) flows upward into the condenser (4) for condensation. The absorber (1), the regenerator (2), and the evaporator (3) adopt a heat exchanger structure with a combined liquid dispersion device.

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