A spray type heat exchanger

Abstract

The invention discloses a spray heat exchanger, comprising a shell, a serpentine tube and a rotating drum coaxial with the shell are arranged in the shell, a plurality of nozzles of different heights facing the serpentine tube are arranged on the outer side wall of the rotating drum, and a plurality of air holes of different heights are also arranged on the side wall of the rotating drum; a water cavity is arranged in the side wall of the rotating drum, and the nozzle is connected with the water cavity; a conical hole is arranged in the center of the bottom plate of the shell, and the conical hole is fixedly connected with a supporting disk through a plurality of supporting columns, and the supporting disk is located above the conical hole, and the bottom end of the rotating drum is rotatably matched with the supporting disk, and a motor capable of driving the rotating drum to rotate is fixedly arranged on the supporting disk; a spray water tank is connected with the water cavity, and the rotating drum is rotatably matched with the spray water tank; a recovery tank is also arranged in the bottom plate, and the recovery tank is connected with a water pump through a first connecting pipe, and the water pump is connected with the spray water tank through a second connecting pipe; the spray water tank is annular, and a fan is connected to the spray water tank. The cooling effect of the spray heat exchanger of the invention is good.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a spray type heat exchanger. Background Art

[0002] Heat exchangers are devices that transfer part of the heat of hot fluid to cold fluid, also known as heat exchangers. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used. Spray heat exchangers are one type of heat exchangers.

[0003] Most existing spray heat exchangers cannot realize water recycling, which is a waste of water resources. The cooling water is sprayed downward evenly from the spray pipe installed above the shell, sprayed on the outer wall of the transmission pipe of the coolant to be cooled, and heat exchange is carried out with the liquid in the pipe. However, when the sprayed cooling water reaches the bottom of the heat exchanger, its temperature is higher than that of the cooling water in the spray pipe, which will lead to poor cooling effect at the bottom of the heat exchanger, and the coolant to be cooled cannot be fully cooled; and the sprayed water will also become hot due to heat exchange, and when it is sprayed again, the heat dissipation effect of the material to be cooled will inevitably be poor. Summary of the invention

[0004] The object of the present invention is to provide a spray type heat exchanger to solve the problems existing in the above-mentioned prior art and to improve the cooling effect of the spray type heat exchanger.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a spray heat exchanger, comprising a shell, wherein a serpentine tube and a rotating drum coaxial with the shell are arranged in the shell, a plurality of nozzles of different heights facing the serpentine tube are arranged on the outer wall of the rotating drum, and a plurality of air holes of different heights are also arranged on the side wall of the rotating drum; a water cavity is arranged in the side wall of the rotating drum, and the nozzle is connected to the water cavity; a conical hole is arranged in the center of the bottom plate of the shell, and the conical hole is fixedly connected to a support plate through a plurality of support columns, and the support plate is located above the conical hole The bottom end of the rotating drum is rotatably matched with the supporting disk, and a motor capable of driving the rotating drum to rotate is fixedly provided on the supporting disk; a spray water tank is fixedly provided on the top of the shell, the spray water tank is connected with the water cavity, and the rotating drum is rotatably matched with the spray water tank; an annular recovery groove is also provided in the bottom plate, the recovery groove is connected with the water pump through a first connecting pipe, and the water pump is connected with the spray water tank through a second connecting pipe; the spray water tank is annular, and a fan located directly above the rotating drum is connected to the spray water tank.

[0007] Preferably, the rotating shaft of the motor is coaxial with the rotating drum, a horizontal first connecting rod is fixedly provided in the rotating drum, and one end of the rotating shaft away from the motor is fixedly connected to the middle part of the first connecting rod.

[0008] Preferably, a first heat dissipation fin is disposed at the bottom end of the shell, and a second heat dissipation fin is disposed in the conical hole.

[0009] Preferably, a water outlet ring is provided at the bottom of the spray water tank and is inserted into the top end of the side wall of the rotating drum, and the rotating drum is rotatably matched with the water outlet ring.

[0010] Preferably, the recovery groove is coaxial with the tapered hole.

[0011] Preferably, at least three supporting legs are connected to the bottom end of the shell.

[0012] Compared with the prior art, the present invention has achieved the following technical effects:

[0013] The spray type heat exchanger of the present invention has a good cooling effect. The spray type heat exchanger of the present invention is provided with nozzles distributed in the vertical direction on the side wall of the rotating drum, so that the serpentine tubes at different heights can be sprayed with cooling water with a sufficiently low temperature, thereby improving the cooling effect on the heat medium in the serpentine tubes. By providing a fan above the rotating drum, the fan can accelerate the suction of water vapor in the shell, increase the flow rate of gas on the wall of the serpentine tube in the shell, thereby increasing the evaporation rate of cooling water, thereby improving the cooling effect; the recovery tank is cooled by the first heat dissipation fin and the second heat dissipation fin, and when the fan is working, the external air enters the shell through the first heat dissipation fin and the second heat dissipation fin, thereby improving the heat dissipation rate of the first heat dissipation fin and the second heat dissipation fin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic structural diagram of the spray type heat exchanger of the present invention;

[0016] Wherein: 100, spray heat exchanger; 1, shell; 2, serpentine tube; 3, recovery tank; 4, support foot; 5, first heat dissipation fin; 6, second heat dissipation fin; 7, cone surface; 8, support column; 9, support plate; 10, motor; 11, shaft; 12, first connecting rod; 13, rotating drum; 14, air vent; 15, nozzle; 16, second connecting rod; 17, spray water tank; 18, fan; 19, water outlet ring; 20, first connecting pipe; 21, water pump; 22, second connecting pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The object of the present invention is to provide a spray type heat exchanger to solve the problems existing in the above-mentioned prior art and to improve the cooling effect of the spray type heat exchanger.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown: This embodiment provides a spray heat exchanger 100, including a shell 1, in which a serpentine tube 2 and a rotating drum 13 coaxial with the shell 1 are arranged. The serpentine tube 2 can be multiple and evenly arranged in the annular space between the rotating drum 13 and the shell 1. The serpentine tube 2 can also be set as a serpentine tube in the shape of an annular column as a whole, coaxial with the rotating drum 13. Four supporting legs 4 are connected to the bottom end of the shell 1.

[0021] A spray water tank 17 is fixedly connected to the top of the shell 1 through a second connecting rod 16. A water cavity is provided in the side wall of the rotating drum 13. The spray water tank 17 is communicated with the water cavity in the side wall of the rotating drum 13, and the rotating drum 13 and the spray water tank 17 are rotatably matched; specifically, a water outlet ring 19 is provided at the bottom of the spray water tank 17 and is inserted into the top end of the side wall of the rotating drum 13, and the rotating drum 13 and the water outlet ring 19 are rotatably matched.

[0022] A plurality of nozzles 15 of different heights facing the serpentine tube 2 are arranged on the outer wall of the rotating drum 13, and the nozzles 15 are connected to the water cavity; the nozzles 15 distributed along the vertical direction are arranged on the side wall of the rotating drum 13, so that cooling water with a sufficiently low temperature can be sprayed at different heights of the serpentine tube 2, thereby improving the cooling effect of the heat medium in the serpentine tube 2.

[0023] The spray water tank 17 is annular in shape, and is connected to a fan 18 located just above the rotating drum 13 . A plurality of air holes 14 at different heights are also provided on the side wall of the rotating drum 13 . A conical hole is provided in the center of the bottom plate of the housing 1. The conical hole is fixedly connected to the support plate 9 through a plurality of support columns 8. The support plate 9 is located above the conical hole. The bottom end of the rotating drum 13 is rotatably matched with the support plate 9. The support plate 9 is fixedly provided with a motor 10 capable of driving the rotating drum 13 to rotate. An annular recovery groove 3 is also provided in the bottom plate. The recovery groove 3 is coaxial with the conical hole. The inner side of the conical surface 7 is the conical hole, and the outer side is the recovery groove 3. The recovery groove 3 is connected to the water pump 21 through the first connecting pipe 20. The water pump 21 is connected to the spray water tank 17 through the second connecting pipe 22. The rotating shaft 11 of the motor 10 is coaxial with the rotating drum 13. A horizontal first connecting rod 12 is fixedly provided in the rotating drum 13. One end of the rotating shaft 11 away from the motor 10 is fixedly connected to the middle part of the first connecting rod 12. A first heat dissipation fin 5 is provided at the bottom end of the housing 1, and a second heat dissipation fin 6 is provided in the conical hole.

[0024] The working process of the spray heat exchanger 100 in this embodiment is as follows:

[0025] The heat medium to be cooled is passed into the serpentine tube 2, and cooling water is added to the spray water tank 17. The cooling water enters the water cavity in the side wall of the rotating drum 13 through the water outlet ring 19, and is finally sprayed out through the nozzle 15 and sprayed onto the serpentine tube 2; in this process, the motor 10 drives the rotating drum 13 to rotate, and the nozzle 15 rotates with the rotating drum 13, thereby improving the uniformity of cooling water spraying; at the same time, the fan 18 is turned on, and the air outside the shell 1 enters the annular space where the serpentine tube 2 is located through the first heat dissipation fin 5, the second heat dissipation fin 6, the support plate 9 and the tapered hole. The fast-flowing gas blows through the tube wall of the serpentine tube 2, accelerating the evaporation of the cooling water sprayed on the tube wall of the serpentine tube 2, and the evaporated water vapor flows into the rotating drum 13 through the air permeable card with the gas, and is finally discharged through the fan 18.

[0026] In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A spray type heat exchanger, characterized in that: The invention comprises a shell, wherein a serpentine tube and a rotating drum coaxial with the shell are arranged in the shell, a plurality of nozzles of different heights facing the serpentine tube are arranged on the outer wall of the rotating drum, and a plurality of air holes of different heights are also arranged on the side wall of the rotating drum; a water cavity is arranged in the side wall of the rotating drum, and the nozzle is connected with the water cavity; a conical hole is arranged in the center of the bottom plate of the shell, and the conical hole is fixedly connected to a support plate through a plurality of support columns, and the support plate is located above the conical hole, and the bottom of the rotating drum is provided with a plurality of air holes at different heights ... water cavity is arranged in the side wall of the rotating drum, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the shell, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the shell, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the shell, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the shell, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the shell, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the rotating drum, and the water cavity is connected with the water cavity; a water cavity is arranged in the center of the bottom plate of the rotating drum, and the water cavity is connected with the water cavity; a water cavity is arranged in the center The end is rotatably matched with the support disk, and the support disk is fixedly provided with a motor capable of driving the rotating drum to rotate; a spray water tank is fixedly provided above the shell, the spray water tank is connected with the water cavity, and the rotating drum is rotatably matched with the spray water tank; an annular recovery tank is also provided in the bottom plate, the recovery tank is connected with the water pump through a first connecting pipe, and the water pump is connected with the spray water tank through a second connecting pipe; the spray water tank is annular, and a fan located directly above the rotating drum is connected to the spray water tank; A first heat dissipation fin is arranged at the bottom end of the shell, and a second heat dissipation fin is arranged in the conical hole; the rotating shaft of the motor is coaxial with the rotating drum, a horizontal first connecting rod is fixed in the rotating drum, and one end of the rotating shaft away from the motor is fixedly connected to the middle part of the first connecting rod.

2. The spray type heat exchanger according to claim 1, characterized in that: The bottom of the spray water tank is provided with a water outlet ring inserted into the top end of the side wall of the rotating drum, and the rotating drum is rotatably matched with the water outlet ring.

3. The spray type heat exchanger according to claim 1, characterized in that: The recovery groove is coaxial with the tapered hole.

4. The spray type heat exchanger according to claim 1, characterized in that: The bottom end of the shell is connected with at least three supporting legs.

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