Cooling conduit

Abstract

The utility model provides a cooling conduit and relates to the technical field of titanium dioxide production by a chlorination method. A cooling guide pipe comprises a main body pipe, a first heat dissipation assembly and a second heat dissipation assembly are alternately arranged on the annular side of the main body pipe in the axial direction, the first heat dissipation assembly comprises a plurality of first cooling fins, the second heat dissipation assembly comprises a plurality of second cooling fins, and the central axis of any second cooling fin is located between the central axes of every two adjacent first cooling fins. The multiple first cooling fins and the multiple second cooling fins are all used for cutting the cooling liquid on the outer side of the cooling guide pipe. The utility model provides a cooling guide pipe which can improve the heat dissipation effect of the cooling guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of producing titanium dioxide by a chlorination process, in particular to a cooling conduit. Background Art

[0002] In the chloride process of titanium dioxide production, chlorine gas must first be used to react with titanium-rich materials (high-titanium slag, natural rutile, artificial rutile, or UGS slag) at high temperature to produce titanium tetrachloride. After refining to remove vanadium and iron, the refined titanium tetrachloride is then oxidized in an oxidation furnace to produce oxidized dry powder. In this process, the key step is to reduce the temperature of the oxidized dry powder from a high temperature of 1000°C to 180°C. This is usually achieved by using rock salt and cooling pipes. The design of the cooling pipe and the method of adding rock salt have a direct impact on the efficiency and cost of the cooling process. As the production load increases, the unit consumption of rock salt also increases, which not only increases production costs but also increases wear and tear on equipment.

[0003] Patent number CN220750831U describes a device for improving heat exchange efficiency in a pipe. Multiple cooling fins are installed to stably conduct heat from the cooling pipe and dissipate it quickly through the fins. However, because they are arranged sequentially, the spaces between adjacent cooling fins are evenly divided along their axis into multiple liquid flow channels. This disrupts the flow of water along the pipe, resulting in slower heat transfer and a need for further improvement in heat dissipation. Utility Model Content

[0004] The utility model provides a cooling conduit, which is used to solve the problem of how to improve the heat dissipation effect of the cooling conduit.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] A cooling conduit comprises a main tube, wherein a first heat dissipation assembly and a second heat dissipation assembly are alternately arranged axially on a ring side of the main tube, the first heat dissipation assembly comprises a plurality of first cooling fins spaced apart on the main tube, and the second heat dissipation assembly comprises a plurality of second cooling fins spaced apart on the main tube, the central axis of any second cooling fin being located between the central axes of two adjacent first cooling fins, and the plurality of first cooling fins and the plurality of second cooling fins being used to cut cooling liquid on the outside of the cooling conduit.

[0007] This design allows the cooling liquid to dissipate heat more evenly, further increasing the heat exchange efficiency; when personnel clean scale on the first cooling fins and the second cooling fins, their sides can also be cleaned well without any dead corners, making it more convenient for subsequent long-term use.

[0008] In some technical solutions of the present invention, the central axes of the plurality of first cooling fins and the central axes of the plurality of second cooling fins are parallel to the central axis of the main tube.

[0009] This design can extend the service life of the first cooling fin and the second cooling fin.

[0010] In some technical solutions of the present invention, the plurality of first cooling fins are arranged at equal intervals, the plurality of second cooling fins are arranged at equal intervals, and the central axis of any second cooling fin is located between the central axes of two adjacent first cooling fins.

[0011] This design method can make the force acting on the main tube more uniform and avoid stress concentration.

[0012] In some technical solutions of the present invention, the number of the first cooling fins is equal to the number of the second cooling fins and is 4.

[0013] This design leaves enough space for cleaning the main tube area between the first cooling fin and the second cooling fin.

[0014] In some technical solutions of the present invention, the first heat dissipation component and the second heat dissipation component are spaced apart from each other.

[0015] This design method allows the first heat dissipation component and the second heat dissipation component to be provided with a spacing area along the axial direction of the main tube, so that when the cleaning tool cleans the main tube, there will be no sanitary dead corners due to the narrow diagonal distance between the first cooling fin and the second cooling fin, making cleaning easier.

[0016] In some technical solutions of the present invention, the first heat dissipation component and the second heat dissipation component are spaced 150 mm apart.

[0017] This design can well ensure that the cleaning tool cleans the main tube, while also making the best use of the outer space of the main tube.

[0018] In some technical solutions of the present invention, the first cooling fins and the second cooling fins are both nickel-containing stainless steel sheets.

[0019] Choosing 304 material can be welded with the main pipe, and the economic cost is also more affordable.

[0020] In some technical solutions of the present invention, the length range of the first cooling fin and the length range of the second cooling fin are both 300 mm to 400 mm.

[0021] The first cooling fin and the second cooling fin can satisfy about 20% of the heat exchange area within this length range while having a certain strength, thereby being able to withstand the impact of water flow in the water tank.

[0022] In some technical solutions of the present invention, the width range of the first cooling fin and the width range of the second cooling fin are both 60 mm-80 mm.

[0023] This design method can meet the requirements of heat exchange area while having a certain strength, and thus can withstand the impact of water flow in the water tank.

[0024] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0025] In the cooling conduit, the first heat dissipation assembly and the second heat dissipation assembly are alternately arranged on the main tube, and the first cooling fins and the second cooling fins are synchronously arranged at the radial intersection of the main tube and axially spaced, so as to achieve the effect of multi-angle water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a cooling duct according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 Cross-sectional view in the AA direction;

[0028] Figure 3 for Figure 1 side view.

[0029] Icon: 1-main tube, 2-first cooling fin, 3-second cooling fin. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example

[0032] Please refer to Figure 1-Figure 3 A cooling duct includes a main tube 1, and a first heat dissipation component and a second heat dissipation component are alternately provided axially on the ring side of the main tube 1. The first heat dissipation component includes a plurality of first cooling fins 2, and the second heat dissipation component includes a plurality of second cooling fins 3. The central axis of any second cooling fin 3 is located between the central axes of two adjacent first cooling fins 2.

[0033] The principle of the cooling pipe is: the first heat dissipation component and the second heat dissipation component are alternately arranged at the high temperature of the main tube 1, wherein the first heat dissipation component and the second heat dissipation component are welded to the main tube 1 in a full welding manner, that is, the first cooling fin 2 and the second cooling fin 3 are both welded to the main tube 1. The full welding manner makes the first heat dissipation component and the second heat dissipation component more firmly arranged on the main tube 1, and can also withstand the long-term erosion of the cooling liquid; when the cooling liquid is cooled, it first passes through the first cooling fin 2, and is cut and diverted by the multiple first cooling fins 2 on the first heat dissipation component. At the same time, the cooling liquid cools the first cooling fin 2, increases the area of ​​the original main pipe contacting the cooling liquid, and thus has a cooling effect. At this time, the temperature of the flowing cooling liquid close to the first cooling fin 2 is different from the temperature away from the cooling fin, and then The cooling liquid enters the second heat dissipation component. Since the central axis of any second cooling fin 3 is located between the central axes of two adjacent first cooling fins 2, the second cooling fin 3 will break the water flow originally formed in the first heat dissipation component, and the temperature of the broken coolant will be lower than the temperature near the first cooling fin 2, so that the water temperature close to the second cooling fin 3 is lower than the temperature near the first cooling fin 2, which has a better cooling effect. The cooling liquid shuttles between the alternating first heat dissipation component and the second heat dissipation component over and over again. The cooling liquid is scattered in the process. Each time it enters the first heat dissipation component or the second heat dissipation component, it will be cooled again at a different cutting position than before, so that the flowing cooling liquid can dissipate heat more evenly, further increasing the heat exchange efficiency and reducing the wear of rock salt on the equipment.

[0034] In addition, the first cooling fins 2, the second cooling fins 3 and the main tube 1 will form scale after long-term use. In order to facilitate later use, a grinding machine is currently used to grind and clean the scale on the main tube 1, the first cooling fins 2 and the second cooling fins 3. In this application, since the central axis of any second cooling fin 3 is located between the central axes of two adjacent first cooling fins 2, the two sides of any second cooling fin 3 are located in two adjacent second cooling fins 3, and the two sides of any first cooling fin 2 are also located in the adjacent second cooling fins 3. When personnel clean the scale on the first cooling fins 2 and the second cooling fins 3, their sides can also be cleaned well without any dead corners for cleaning, which is more convenient for subsequent long-term use. It is worth noting that the central axis of any second cooling fin 3 is located between the central axes of two adjacent first cooling fins 2, which can also facilitate the welding of the first cooling fin 2 and the second cooling fin 3.

[0035] As a preferred embodiment, the central axes of the plurality of first cooling fins 2 and the central axes of the plurality of second cooling fins 3 are parallel to the central axis of the main tube 1 .

[0036] In the above embodiment, the central axis of the first cooling fin 2 and the central axis of the second cooling fin 3 are parallel to the main tube 1, which can reduce the scouring area and strength of the water flow they are subjected to during use, thereby extending the service life of the first cooling fin 2 and the second cooling fin 3.

[0037] As a preferred embodiment, the plurality of first cooling fins 2 are arranged at equal intervals, the plurality of second cooling fins 3 are arranged at equal intervals, and the central axis of any second cooling fin 3 is located between the central axes of two adjacent first cooling fins 2 .

[0038] In this design, the water flow entering the first heat dissipation component exchanges heat between the two first cooling fins 2 during heat exchange. The middle part of the water flow section formed is the lowest temperature part due to heat conduction. As the water flows, the position where the second cooling fins 3 push away the water flow is exactly in this position range, which can make good use of the cooling liquid. At the same time, the multiple first cooling fins 2 and the multiple second cooling fins 3 are synchronously and evenly spaced, which can make the force acting on the main tube 1 more uniform and avoid stress concentration.

[0039] As a preferred embodiment, the number of the first cooling fins 2 and the number of the second cooling fins 3 are equal and are both four.

[0040] In the above embodiment, the first cooling fins 2 and the second cooling fins 3 are designed to ensure that the main tube 1 is subjected to uniform water flow impact during operation; 4 are selected because the area of ​​the main tube 1 between adjacent first cooling fins 2 and adjacent second cooling fins 3 also needs to be cleaned of scale. For the cooling tubes with a diameter of generally 219 mm commonly used at this stage, 4 first cooling fins 2 and 4 second cooling fins 3 can leave enough space for cleaning.

[0041] As a preferred embodiment, the first heat dissipation component and the second heat dissipation component are spaced apart from each other.

[0042] This design method allows the first heat dissipation component and the second heat dissipation component to be provided with a spacing area along the axial direction of the main tube 1, so that when the cleaning tool cleans the main tube 1, there will be no sanitary dead corners due to the narrow diagonal distance between the first cooling fin 2 and the second cooling fin 3, making cleaning easier.

[0043] As a preferred embodiment, the first heat dissipation component and the second heat dissipation component are spaced 150 mm apart.

[0044] In the above embodiment, the interval of 150 mm can well ensure that the cleaning tool can clean the main tube 1, while also making the best use of the outer space of the main tube 1.

[0045] As a preferred embodiment, the first cooling fins 2 and the second cooling fins 3 are both nickel-containing stainless steel sheets.

[0046] In the above embodiment, the main tube 1 in this application is mostly Inconel base material (nickel-based alloy). Inconel base material is a type of alloy material with nickel as the main component. By adding various alloy elements such as chromium, molybdenum, and niobium, a high-temperature alloy with excellent performance is formed; the selected fins are 304 (stainless steel) material, 304 material contains about 9% nickel, and the base material is Inconel containing about 80% nickel. The selection of 304 material can be welded with the base material, and the economic cost is also more affordable.

[0047] As a preferred embodiment, the length range of the first cooling fin 2 and the length range of the second cooling fin 3 are both 300 mm to 400 mm.

[0048] In the above embodiment, the first cooling fin 2 and the second cooling fin 3 can satisfy about 20% of the heat exchange area within the length range of 300mm-400mm while having a certain strength, thereby being able to withstand the impact of water flow in the water tank.

[0049] As a preferred embodiment, the width range of the first cooling fin 2 and the width range of the second cooling fin 3 are both 60 mm to 80 mm.

[0050] In the above embodiment, the first cooling fin 2 and the second cooling fin 3 have a width range of 60mm-80mm and a length range of 300mm-400mm respectively in proportion. The first cooling fin 2 and the second cooling fin 3 are 300*60-400*80 respectively, which can meet the heat exchange area while having a certain strength, and can thus withstand the impact of water flow in the water tank.

[0051] In summary, the embodiment of the present invention provides a cooling duct. The material of the main tube 1 of the present application is still the cooling duct material used in actual production at this stage, and no additional purchase is required. By adding multiple first cooling fins 2 and multiple second cooling fins 3, the central axis of any second cooling fin 3 is located between the central axes of two adjacent first cooling fins 2, which can cut the flowing water in the water tank, making the heat exchange more sufficient and improving the heat exchange efficiency. At the same time, a certain amount of cleaning space can be left to reduce the dead corners for cleaning scale.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cooling conduit, comprising a main body tube (1), characterized in that: A first heat dissipation assembly and a second heat dissipation assembly are alternately provided along the axial direction on the annular side of the main tube (1); the first heat dissipation assembly comprises a plurality of first cooling fins (2) spaced apart on the main tube (1); the second heat dissipation assembly comprises a plurality of second cooling fins (3) spaced apart on the main tube (1); the central axis of any second cooling fin (3) is located between the central axes of two adjacent first cooling fins (2); and the plurality of first cooling fins (2) and the plurality of second cooling fins (3) are used to cut cooling liquid outside the cooling conduit.

2. The cooling conduit according to claim 1, characterized in that: The central axes of the plurality of first cooling fins (2) and the central axes of the plurality of second cooling fins (3) are parallel to the central axis of the main tube (1).

3. The cooling conduit according to claim 2, characterized in that: A plurality of the first cooling fins (2) are arranged at equal intervals, a plurality of the second cooling fins (3) are arranged at equal intervals, and the central axis of any second cooling fin (3) is located between the central axes of two adjacent first cooling fins (2).

4. A cooling conduit according to claim 1 or 3, characterized in that: The number of the first cooling fins (2) and the number of the second cooling fins (3) are equal and both are 4.

5. The cooling conduit according to claim 1, characterized in that: The first heat dissipation component and the second heat dissipation component are spaced apart from each other.

6. The cooling conduit according to claim 1, characterized in that: The first heat dissipation component and the second heat dissipation component are spaced 150 mm apart.

7. The cooling conduit according to claim 1, characterized in that: The first cooling fins (2) and the second cooling fins (3) are both nickel-containing stainless steel sheets.

8. The cooling conduit according to claim 1, characterized in that: The length range of the first cooling fin (2) and the length range of the second cooling fin (3) are both 300 mm to 400 mm.

9. The cooling conduit according to claim 1, characterized in that: The width range of the first cooling fin (2) and the width range of the second cooling fin (3) are both 60 mm to 80 mm.

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