Drying tower heat exchange system and drying tower system

Abstract

The utility model provides a drying tower heat exchange system and drying tower system.The drying tower heat exchange system is characterized in that a heat exchanger set comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, and an air inlet pipe set is communicated with an inlet of the first heat exchanger and an inlet of the second heat exchanger; the first end of the first condenser pipe communicates with an outlet of the first heat exchanger. The first end of the second condenser pipe communicates with an outlet of the second heat exchanger. An inlet of the first liquid storage tank is communicated with the second end of the first condensation pipe; the inlet of the second liquid storage tank is communicated with the second end of the second condensation pipe; the communicating pipe is communicated between the outlets of the first liquid storage tank and the second liquid storage tank; the return pipe is communicated between an outlet of the first liquid storage tank and an inlet of the third heat exchanger; the liquid discharge pipe communicates with an outlet of the third heat exchanger. According to the technical scheme, the problem that in the related technology, water drainage of a heat exchanger is not smooth, and consequently the heat exchanger is damaged easily is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a drying tower heat exchange system and a drying tower system. Background Art

[0002] During the milk powder processing, the main heater of the milk powder spraying tower generally uses 15barg-17bar high-pressure steam heating to heat the outdoor air to 150℃~195℃, thereby drying the milk powder.

[0003] In the related technology, when the steam heat exchanger is heated, the temperature difference between the steam and the outside air is very large, which will quickly generate condensed water. However, due to the limitations of the heat exchange system, the condensed water needs to flow back to the liquid heat exchanger to further heat the air. This will cause the condensed water to drain poorly, that is, it is difficult to enter the liquid heat exchanger. The condensed water stays in the steam heat exchanger for a long time and is prone to water hammer, which can easily lead to frequent damage to the steam heater. In addition, steam is also prone to leak from the damaged part of the steam heat exchanger into the drying tower system, thereby seriously affecting the drying operation efficiency and parameter stability. The generated metal debris will also enter the drying tower and the product, causing market customer complaints. Utility Model Content

[0004] The main purpose of the utility model is to provide a drying tower heat exchange system and a drying tower system to solve the problem in the related art that the heat exchanger has poor drainage and thus easily causes damage to the heat exchanger.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a drying tower heat exchange system is provided, including: an air inlet pipe group; a heat exchanger group, including a first heat exchanger, a second heat exchanger and a third heat exchanger, the air inlet pipe group is connected to the inlet of the first heat exchanger and the inlet of the second heat exchanger respectively; a condenser pipe group, including a first condenser and a second condenser, the first end of the first condenser is connected to the outlet of the first heat exchanger, and the first end of the second condenser is connected to the outlet of the second heat exchanger; a first liquid storage tank, the inlet of the first liquid storage tank is connected to the second end of the first condenser; a second liquid storage tank, the inlet of the second liquid storage tank is connected to the second end of the second condenser; a connecting pipe, connected between the outlets of the first liquid storage tank and the second liquid storage tank; a reflux pipe, the reflux pipe is connected between the outlet of the first liquid storage tank and the inlet of the third heat exchanger; a drain pipe, connected to the outlet of the third heat exchanger.

[0006] Furthermore, the drying tower heat exchange system also includes an air duct, which is connected between the top of the second liquid storage tank and the inlet of the second heat exchanger.

[0007] Furthermore, the condenser tube group also includes a third condenser tube, and the third condenser tube is connected between the outlet of the first heat exchanger and the outlet of the third heat exchanger.

[0008] Furthermore, the condenser tube group also includes a fourth condenser tube, and the fourth condenser tube is connected between the outlet of the second heat exchanger and the inlet of the third heat exchanger.

[0009] Furthermore, a first observation window is provided on the third condenser tube, and a second observation window is provided on the fourth condenser tube.

[0010] Furthermore, the heat exchanger group also includes a fourth heat exchanger, the intake pipe group is connected to the fourth heat exchanger, and the condenser pipe group also includes a fifth condenser and a sixth condenser. The fifth condenser is connected between the outlet of the fourth heat exchanger and the inlet of the second liquid storage tank, and the sixth condenser is connected between the outlet of the fourth heat exchanger and the inlet of the third heat exchanger.

[0011] Furthermore, the intake pipe group includes a first pipeline and a second pipeline, the first pipeline is connected to the first heat exchanger, the second pipeline includes a main pipeline and a first branch pipe, the main pipeline is connected to the second heat exchanger, and the first branch pipe is connected between the main pipeline and the fourth heat exchanger.

[0012] Furthermore, the air intake pipe group also includes a second branch pipe, and the second branch pipe is connected between the first pipeline and the second pipeline.

[0013] According to another aspect of the utility model, a drying tower system is provided. The drying tower system includes a drying tower heat exchange system. The drying tower heat exchange system is the above-mentioned drying tower heat exchange system.

[0014] Furthermore, the drying tower system includes a first air inlet pipeline, a second air inlet pipeline and a drying tower, the drying tower heat exchange system is arranged on the first air inlet pipeline, the first air inlet pipeline is connected to the inlet of the drying tower, and the second air inlet pipeline is connected between the first air inlet pipeline and the outlet of the drying tower.

[0015] By applying the technical solution of the utility model, the heat exchanger group includes a first heat exchanger, a second heat exchanger and a third heat exchanger. The air intake pipe group is connected to the inlet of the first heat exchanger and the inlet of the second heat exchanger respectively. The condenser pipe group includes a first condenser pipe and a second condenser pipe, the first end of the first condenser pipe is connected to the outlet of the first heat exchanger, and the first end of the second condenser pipe is connected to the outlet of the second heat exchanger. The inlet of the first liquid storage tank is connected to the second end of the first condenser pipe, and the inlet of the second liquid storage tank is connected to the second end of the second condenser pipe. The connecting pipe is connected between the outlets of the first liquid storage tank and the second liquid storage tank. The reflux pipe is connected between the outlet of the first liquid storage tank and the inlet of the third heat exchanger. The drain pipe is connected to the outlet of the third heat exchanger. Through the above-mentioned arrangement, steam enters the first heat exchanger and the second heat exchanger through the air inlet pipe group, and condensed water is generated in the first heat exchanger and the second heat exchanger. The condensed water enters the first liquid storage tank and the second liquid storage tank through the condensation pipe group. The connecting pipe can guide the condensed water in the second liquid storage tank to the first liquid storage tank. The reflux pipe can guide the condensed water in the first liquid storage tank to the third heat exchanger and be used to heat the air. After the heating is completed, the condensed water is discharged through the drain pipe. The arrangement of the first liquid storage tank and the second liquid storage tank can prevent the accumulation of condensed water in the first heat exchanger and the second heat exchanger, thereby avoiding the water hammer phenomenon in the first heat exchanger and the second heat exchanger, thereby preventing the first heat exchanger and the second heat exchanger from being damaged. Therefore, the technical solution of the present application effectively solves the problem of poor drainage of the heat exchanger in the related art, which easily leads to damage to the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of an embodiment of a drying tower heat exchange system according to the utility model is shown;

[0018] Figure 2 Shows Figure 1 A schematic diagram of the structure of the air inlet pipe group of the drying tower heat exchange system;

[0019] Figure 3 Shows Figure 1 A schematic diagram of the structure of the heat exchanger group and the condenser tube group of the drying tower heat exchange system;

[0020] Figure 4 A structural schematic diagram of an embodiment of a drying tower system according to the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Inlet pipe group; 11. First pipeline; 12. Second pipeline; 121. Main pipeline; 122. First branch pipeline; 13. Second branch pipeline; 20. Heat exchanger group; 21. First heat exchanger; 22. Second heat exchanger; 23. Third heat exchanger; 24. Fourth heat exchanger; 30. Condenser pipe group; 31. First condenser; 32. Second condenser; 33. Third condenser; 331. First observation window; 34. Fourth condenser; 341. Second observation window; 35. Fifth condenser; 36. Sixth condenser; 41. First liquid storage tank; 42. Second liquid storage tank; 43. Connecting pipe; 44. Reflux pipe; 45. Drain pipe; 46. Air guide pipe; 51. First air inlet pipeline; 52. Second air inlet pipeline; 53. Drying tower. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] like Figure 1 As shown, in this embodiment, the drying tower heat exchange system includes: an air intake pipe group 10, a heat exchanger group 20, a condenser group 30, a first liquid storage tank 41, a second liquid storage tank 42, a connecting pipe 43, a reflux pipe 44 and a drain pipe 45. The heat exchanger group 20 includes a first heat exchanger 21, a second heat exchanger 22 and a third heat exchanger 23. The air intake pipe group 10 is connected to the inlet of the first heat exchanger 21 and the inlet of the second heat exchanger 22 respectively. The condenser group 30 includes a first condenser 31 and a second condenser 32. The first end of the first condenser 31 is connected to the outlet of the first heat exchanger 21, and the first end of the second condenser 32 is connected to the outlet of the second heat exchanger 22. The inlet of the first liquid storage tank 41 is connected to the second end of the first condenser 31. The inlet of the second liquid storage tank 42 is connected to the second end of the second condenser 32. The connecting pipe 43 is connected between the outlets of the first liquid storage tank 41 and the second liquid storage tank 42. The return pipe 44 is connected between the outlet of the first liquid storage tank 41 and the inlet of the third heat exchanger 23. The drain pipe 45 is connected to the outlet of the third heat exchanger 23.

[0027] Applying the technical solution of this embodiment, the heat exchanger group 20 includes a first heat exchanger 21, a second heat exchanger 22 and a third heat exchanger 23. The air intake pipe group 10 is connected to the inlet of the first heat exchanger 21 and the inlet of the second heat exchanger 22 respectively. The condenser pipe group 30 includes a first condenser pipe 31 and a second condenser pipe 32, the first end of the first condenser pipe 31 is connected to the outlet of the first heat exchanger 21, and the first end of the second condenser pipe 32 is connected to the outlet of the second heat exchanger 22. The inlet of the first liquid storage tank 41 is connected to the second end of the first condenser pipe 31, and the inlet of the second liquid storage tank 42 is connected to the second end of the second condenser pipe 32. The connecting pipe 43 is connected between the outlets of the first liquid storage tank 41 and the second liquid storage tank 42. The reflux pipe 44 is connected between the outlet of the first liquid storage tank 41 and the inlet of the third heat exchanger 23. The drain pipe 45 is connected to the outlet of the third heat exchanger 23. Through the above arrangement, steam enters the first heat exchanger 21 and the second heat exchanger 22 through the air intake pipe group 10, and condensed water is generated in the first heat exchanger 21 and the second heat exchanger 22. The condensed water enters the first liquid storage tank 41 and the second liquid storage tank 42 through the condensation pipe group 30. The connecting pipe 43 can guide the condensed water in the second liquid storage tank 42 to the first liquid storage tank 41. The return pipe 44 can guide the condensed water in the first liquid storage tank 41 to the third heat exchanger 23 and heat the air. After the heating is completed, the condensed water is discharged through the drain pipe 45. The arrangement of the first liquid storage tank 41 and the second liquid storage tank 42 can prevent the accumulation of condensed water in the first heat exchanger 21 and the second heat exchanger 22, thereby avoiding the water hammer phenomenon in the first heat exchanger 21 and the second heat exchanger 22, thereby preventing the first heat exchanger 21 and the second heat exchanger 22 from being damaged. Therefore, the technical solution of this embodiment effectively solves the problem of poor drainage of the heat exchanger in the related art, which easily leads to damage of the heat exchanger.

[0028] like Figure 1 and Figure 3 As shown, in this embodiment, the drying tower heat exchange system further includes an air duct 46, which is connected between the top of the second liquid storage tank 42 and the inlet of the second heat exchanger 22. The arrangement of the air duct 46 can return the steam entering the second liquid storage tank 42 to the air intake pipe group 10, thereby making the liquid storage space in the second liquid storage tank 42 larger.

[0029] Specifically, in this embodiment, the drying tower heat exchange system further includes an air pipe, which is connected between the top of the first liquid storage tank 41 and the first heat exchanger 21 , thereby discharging steam from the first liquid storage tank 41 .

[0030] like Figure 1 and Figure 3 As shown, in this embodiment, the condenser tube group 30 further includes a third condenser tube 33, which is connected between the outlet of the first heat exchanger 21 and the outlet of the third heat exchanger 23. The third condenser tube 33 can achieve flow diversion, and the condensed water entering the first liquid storage tank 41 enters the third heat exchanger 23.

[0031] like Figure 1 and Figure 3 As shown, in this embodiment, the condenser tube group 30 further includes a fourth condenser tube 34, which is connected between the outlet of the second heat exchanger 22 and the inlet of the third heat exchanger 23. The fourth condenser tube 34 is provided to disperse part of the condensed water so that it directly enters the third heat exchanger 23, thereby preventing the condensed water in the second liquid storage tank 42 from being filled up.

[0032] like Figure 1 and Figure 3 As shown, in this embodiment, a first observation window 331 is provided on the third condenser tube 33, and a second observation window 341 is provided on the fourth condenser tube 34. The first observation window 331 enables observation of the third condenser tube 33, and thus enables real-time observation of the condensed water in the third condenser tube 33. Similarly, the second observation window 341 enables observation of the fourth condenser tube 34, and thus enables real-time observation of the condensed water in the fourth condenser tube 34.

[0033] like Figure 1 and Figure 3As shown, in this embodiment, the heat exchanger group 20 also includes a fourth heat exchanger 24, the intake pipe group 10 is connected to the fourth heat exchanger 24, and the condenser group 30 also includes a fifth condenser 35 and a sixth condenser 36. The fifth condenser 35 is connected between the outlet of the fourth heat exchanger 24 and the inlet of the second liquid storage tank 42, and the sixth condenser 36 is connected between the outlet of the fourth heat exchanger 24 and the inlet of the third heat exchanger 23. The fourth heat exchanger 24 can further improve the effect of heat exchange. And the condensed water can be diverted by the fifth condenser 35 and the sixth condenser 36. Specifically, the fifth condenser 35 guides the condensed water into the second liquid storage tank 42, and the sixth condenser 36 diverts the condensed water to the third heat exchanger 23.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the intake pipe group 10 includes a first pipeline 11 and a second pipeline 12, the first pipeline 11 is connected to the first heat exchanger 21, the second pipeline 12 includes a main pipeline 121 and a first branch pipeline 122, the main pipeline 121 is connected to the second heat exchanger 22, and the first branch pipeline 122 is connected between the main pipeline 121 and the fourth heat exchanger 24. The first pipeline 11 can introduce steam into the first heat exchanger 21, and the second pipeline 12 can introduce steam into the second heat exchanger 22 and the fourth heat exchanger 24, that is, the main pipeline 121 introduces steam into the second heat exchanger 22, and the first branch pipeline 122 introduces steam into the fourth heat exchanger 24.

[0035] like Figure 1 and Figure 2 As shown, in this embodiment, the air intake pipe group 10 further includes a second branch pipe 13, which is connected between the first pipe 11 and the second pipe 12. The second branch pipe 13 guides the steam from the first pipe 11 to the second heat exchanger 22 and the fourth heat exchanger 24.

[0036] According to another aspect of the present application, a drying tower system is provided, such as Figure 4 As shown, the drying tower system of this embodiment includes a drying tower heat exchange system, and the drying tower heat exchange system is the above-mentioned drying tower heat exchange system. The above-mentioned drying tower heat exchange system can collect condensed water, thereby preventing condensed water from being accumulated in the first heat exchanger 21, the second heat exchanger 22 and the fourth heat exchanger 24 for a long time, thereby preventing the first heat exchanger 21, the second heat exchanger 22 and the fourth heat exchanger 24 from being damaged. Therefore, the drying tower system having the above-mentioned drying tower heat exchange system also has the above-mentioned advantages.

[0037] like Figure 4As shown, in this embodiment, the drying tower system includes a first air inlet pipeline 51, a second air inlet pipeline 52 and a drying tower 53. The drying tower heat exchange system is arranged on the first air inlet pipeline 51. The first air inlet pipeline 51 is connected to the inlet of the drying tower 53. The second air inlet pipeline 52 is connected between the first air inlet pipeline 51 and the outlet of the drying tower 53. The outside air is heated by the drying tower heat exchange system and then enters the inlet of the drying tower 53. At the same time, the heated air can also enter the outlet of the drying tower 53 through the second air inlet pipeline 52.

[0038] At the same time, the drying tower system also includes a third air inlet pipeline, which is connected to the second air inlet pipeline 52. The third air inlet pipeline can guide the heated air to other required parts.

[0039] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0042] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drying tower heat exchange system, characterized in that: include: Intake pipe assembly (10); A heat exchanger group (20) comprising a first heat exchanger (21), a second heat exchanger (22) and a third heat exchanger (23), wherein the air intake pipe group (10) is respectively connected to an inlet of the first heat exchanger (21) and an inlet of the second heat exchanger (22); A condenser tube group (30), comprising a first condenser tube (31) and a second condenser tube (32), wherein a first end of the first condenser tube (31) is connected to an outlet of the first heat exchanger (21), and a first end of the second condenser tube (32) is connected to an outlet of the second heat exchanger (22); A first liquid storage tank (41), wherein an inlet of the first liquid storage tank (41) is connected to a second end of the first condenser pipe (31); a second liquid storage tank (42), wherein an inlet of the second liquid storage tank (42) is in communication with a second end of the second condenser pipe (32); A connecting pipe (43) connected between the outlets of the first liquid storage tank (41) and the second liquid storage tank (42); a reflux pipe (44), the reflux pipe (44) being connected between the outlet of the first liquid storage tank (41) and the inlet of the third heat exchanger (23); A liquid discharge pipe (45) is connected to the outlet of the third heat exchanger (23).

2. The drying tower heat exchange system according to claim 1, characterized in that: The drying tower heat exchange system further comprises an air duct (46), wherein the air duct (46) is connected between the top of the second liquid storage tank (42) and the inlet of the second heat exchanger (22).

3. The drying tower heat exchange system according to claim 1, characterized in that: The condenser tube group (30) further includes a third condenser tube (33), wherein the third condenser tube (33) is connected between the outlet of the first heat exchanger (21) and the outlet of the third heat exchanger (23).

4. The drying tower heat exchange system according to claim 3, characterized in that: The condenser tube group (30) further includes a fourth condenser tube (34), wherein the fourth condenser tube (34) is connected between the outlet of the second heat exchanger (22) and the inlet of the third heat exchanger (23).

5. The drying tower heat exchange system according to claim 4, characterized in that: The third condenser tube (33) is provided with a first observation window (331), and the fourth condenser tube (34) is provided with a second observation window (341).

6. The drying tower heat exchange system according to claim 1, characterized in that: The heat exchanger group (20) also includes a fourth heat exchanger (24), the intake pipe group (10) is connected to the fourth heat exchanger (24), and the condenser group (30) also includes a fifth condenser (35) and a sixth condenser (36), the fifth condenser (35) is connected between the outlet of the fourth heat exchanger (24) and the inlet of the second liquid storage tank (42), and the sixth condenser (36) is connected between the outlet of the fourth heat exchanger (24) and the inlet of the third heat exchanger (23).

7. The drying tower heat exchange system according to claim 6, characterized in that: The intake pipe group (10) comprises a first pipe (11) and a second pipe (12), the first pipe (11) being connected to the first heat exchanger (21), the second pipe (12) comprising a main pipe (121) and a first branch pipe (122), the main pipe (121) being connected to the second heat exchanger (22), and the first branch pipe (122) being connected between the main pipe (121) and the fourth heat exchanger (24).

8. The drying tower heat exchange system according to claim 7, characterized in that: The air intake pipe group (10) further comprises a second branch pipe (13), wherein the second branch pipe (13) is connected between the first pipeline (11) and the second pipeline (12).

9. A drying tower system, characterized in that: The drying tower system comprises a drying tower heat exchange system, and the drying tower heat exchange system is the drying tower heat exchange system according to any one of claims 1 to 8.

10. The drying tower system according to claim 9, characterized in that: The drying tower system comprises a first air inlet pipeline (51), a second air inlet pipeline (52) and a drying tower (53); the drying tower heat exchange system is arranged on the first air inlet pipeline (51); the first air inlet pipeline (51) is connected to the inlet of the drying tower (53); and the second air inlet pipeline (52) is connected between the first air inlet pipeline (51) and the outlet of the drying tower (53).

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