Preheater

Abstract

The utility model discloses a preheater. The preheater comprises a cavity, an upper seal head, a lower seal head, a plurality of heat exchange tubes, an upper jacket and a lower jacket, the cavity comprises a first outlet located in the side edge of the upper end and a first inlet located in the side edge of the lower end, the upper end of the cavity is provided with an upper sealing head, the upper end of the upper sealing head is provided with a first discharging port, the lower end of the cavity is provided with a lower sealing head, and the lower end of the lower sealing head is provided with a first feeding port. The plurality of heat exchange pipes are communicated with the first feed port and the first discharge port, the upper jacket is arranged on the upper seal head, the upper jacket and the upper seal head form an upper closed cavity, the upper closed cavity is sequentially provided with a second outlet and a second inlet from top to bottom, the lower jacket is arranged on the lower seal head, and the lower jacket and the lower seal head form a lower closed cavity; and a third outlet and a third inlet are sequentially formed in the lower closed cavity from top to bottom.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a preheater. Background Technology

[0002] In existing production processes, the efficiency of preheaters is generally low, with heat exchange mainly concentrated in the middle part of the preheater. This selective heat exchange leads to uneven heat distribution, which not only wastes a lot of energy but also limits the overall heat exchange efficiency of the preheater. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a preheater that can effectively improve heat exchange efficiency by increasing the heat exchange area.

[0004] The preheater according to an embodiment of the present invention includes:

[0005] The cavity includes a first outlet located on the upper side and a first inlet located on the lower side. An upper end cap is installed on the upper end of the cavity, and a first discharge port is opened at the upper end of the upper end cap. A lower end cap is installed on the lower end of the cavity, and a first inlet is opened at the lower end of the lower end cap.

[0006] A plurality of heat exchange tubes are provided, the plurality of heat exchange tubes passing through the cavity, and the plurality of heat exchange tubes are connected to the first inlet and the first outlet.

[0007] The upper jacket is disposed on the upper end cap and forms an upper sealed cavity with the upper end cap. The upper sealed cavity is provided with a second outlet and a second inlet from top to bottom.

[0008] The lower jacket is installed on the lower end cap and forms a lower sealed cavity with the lower end cap. The lower sealed cavity has a third outlet and a third inlet sequentially opened from top to bottom.

[0009] According to some embodiments of the present invention, the cavity is further provided with a vent, which is located above the first outlet.

[0010] According to some embodiments of the present invention, a plurality of baffles are spaced apart in the cavity, and a plurality of heat exchange tubes pass through the plurality of baffles, the plurality of baffles dividing the cavity into a plurality of connected regions.

[0011] According to some embodiments of the present invention, a plurality of connecting rods are also vertically arranged inside the cavity, and a plurality of baffles are mounted on the plurality of connecting rods.

[0012] According to some embodiments of this utility model, the number of the plurality of baffles is seven, nine or twelve.

[0013] According to some embodiments of the present invention, the upper end cap further includes an end cap cover and a flange joint, the flange joint being sleeved on the top of the end cap cover, the end cap cover having an end cap cavity communicating with the cavity body, and the first discharge port being opened at the upper end of the end cap cover and communicating with the end cap cavity.

[0014] According to some embodiments of this utility model, the upper end cap and the lower end cap have the same structure.

[0015] According to some embodiments of this utility model, the upper sleeve and the lower sleeve have the same structure.

[0016] According to some embodiments of the present invention, it also includes a plurality of connecting ear brackets, which are arranged around the outside of the cavity.

[0017] The preheater of this utility model embodiment has at least the following beneficial effects:

[0018] The upper jacket surrounds the upper head to form an upper sealed space, allowing heat exchange to occur at the upper head. The lower jacket surrounds the lower head to form a lower sealed space, allowing heat exchange to occur at the lower head as well. This ensures that heat exchange occurs throughout the entire process of the product flowing inside the preheater, thus improving heat exchange efficiency.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the assembly structure of the preheater according to an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Sectional view at point AA;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the heat exchange tube, connecting rod and baffle of the preheater according to an embodiment of the present utility model.

[0024] Figure label:

[0025] Cavity 100, First outlet 110, First inlet 120, Vent 130, Baffle 140

[0026] Upper head 200, first discharge port 210, head cover 220, flange joint 230, head cavity 240.

[0027] Lower end cap 300, first feed inlet 310

[0028] 400 heat exchanger tube

[0029] Upper jacket 500, upper sealed cavity 510, second outlet 511, second inlet 512

[0030] Lower jacket 600, lower sealed cavity 610, third outlet 611, third inlet 612

[0031] Connect earcups 700. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "vertical," "horizontal," "bottom," and "inner," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "several" means two or more.

[0034] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installing", "connecting", "linking", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0035] The following is for reference. Figures 1 to 3 A preheater according to an embodiment of the present invention is described.

[0036] refer to Figure 1 As shown, a preheater according to one embodiment of the present utility model includes a cavity 100, an upper end cap 200, a lower end cap 300, a plurality of heat exchange tubes 400, an upper jacket 500, and a lower jacket 600.

[0037] The cavity 100 includes a first outlet 110 located on the upper side and a first inlet 120 located on the lower side. An upper end cap 200 is installed at the upper end of the cavity 100, and a first discharge port 210 is opened at the upper end of the upper end cap 200. A lower end cap 300 is installed at the lower end of the cavity 100, and a first feed port 310 is opened at the lower end of the lower end cap 300. A plurality of heat exchange tubes 400 pass through the cavity 100 and are connected to the first feed port 310. 10 and the first discharge port 210, the upper jacket 500 is set on the upper end cap 200 and forms an upper sealed cavity 510 with the upper end cap 200. The upper sealed cavity 510 has a second outlet 511 and a second inlet 512 opened sequentially from top to bottom. The lower jacket 600 is set on the lower end cap 300 and forms a lower sealed cavity 610 with the lower end cap 300. The lower sealed cavity 610 has a third outlet 611 and a third inlet 612 opened sequentially from top to bottom.

[0038] When the device is in use, it is preheated in advance. The heat exchange medium is introduced through the first inlet 120, the second inlet 512 and the third inlet 612, so that the inside of the cavity 100, the upper closed cavity 510 and the lower closed cavity 610 are filled with the heat exchange medium and flow out from the first outlet 110, the second outlet 511 and the third outlet 611. This allows the heat exchange medium inside the cavity 100, the upper closed cavity 510 and the lower closed cavity 610 to be continuously replaced, thereby maintaining the temperature and having the ability to continuously exchange heat. After the preheating is completed, the product to be heated is introduced through the first feed port 310 and output through several heat exchange tubes 400 from the first discharge port 210. During the flow process, it continuously exchanges heat with the heat exchange medium located inside the cavity 100, the upper closed cavity 510 and the lower closed cavity 610.

[0039] Understandably, the device effectively utilizes the transition cavity between the upper end cap 200 and the lower end cap 300, enabling the heat exchange function of the previously unusable heat exchange area. This allows the product to exchange heat along its flow path within the device, thus improving heat exchange efficiency.

[0040] Understandably, the entire device is made of heat-resistant materials with high thermal conductivity.

[0041] Understandably, when the device is used vertically, it allows the heat exchange medium to fill the cavity 100, the upper sealed cavity 510, and the lower sealed cavity 610 to the maximum extent, and the heat exchange efficiency is also maximized.

[0042] In some specific embodiments of this utility model, the cavity 100 is further provided with a vent 130, which is located above the first outlet 110. (See reference) Figure 2As shown, in this embodiment, the first outlet 110 and the vent 130 are located on the left and right sides of the cavity 100, and the horizontal position of the first outlet 110 is higher than that of the first outlet 130, so that the heat exchange medium will not overflow from the vent during product use, and the vent can remove accumulated gas, maintain the internal pressure balance of the preheater, and thus prevent equipment damage.

[0043] In some specific embodiments of this utility model, a plurality of baffles 140 are spaced apart inside the cavity 100, and a plurality of heat exchange tubes 400 pass through the plurality of baffles 140, dividing the cavity 100 into a plurality of interconnected regions. (Reference) Figure 2 and Figure 3 As shown, in this embodiment, twelve baffles 140 are evenly spaced within the cavity 100, which can force the fluid to change its flow direction, increase the randomness and turbulence of the flow, thereby improving the heat transfer efficiency.

[0044] In some specific embodiments of this utility model, the number of baffles 140 is seven, nine, or twelve. It is understood that the number of baffles 140 should be designed in conjunction with the length of the cavity 100, and the number could also be eight, ten, or thirteen, etc.

[0045] In some specific embodiments of this utility model, a plurality of connecting rods 150 are vertically arranged inside the cavity 100, and a plurality of baffles 140 are mounted on the plurality of connecting rods 150. (Reference) Figure 3 As shown in this embodiment, each baffle 140 is provided with several connecting rods 150 for connection and fixation, which enables the baffle 140 to be stably installed in the cavity 100 and will not be displaced due to the flow impact of the heat exchange medium.

[0046] In some specific embodiments of this utility model, the upper end cap 200 also includes an end cap cover 220 and a flange joint 230. The flange joint 230 is sleeved on the top of the end cap cover 220. The end cap cover 220 has an end cap cavity 240 that communicates with the cavity 100. The first discharge port 210 is opened at the upper end of the end cap cover 220 and communicates with the end cap cavity 240.

[0047] refer to Figure 1 and Figure 2 As shown, in this embodiment, the end cap 220 and the cavity 100 form an end cap cavity 240, which can effectively gather the products in several heat exchange tubes and discharge them from the first discharge port 210. The flange joint 230 plays a role in connection and sealing, ensuring the tightness and reliability of the discharge port 210.

[0048] In some specific embodiments of this utility model, reference is made to Figure 2As shown, the upper end cap 200 and the lower end cap 300 have the same structure, which allows the upper end cap 200 and the lower end cap 300 to be interchanged, improving the interchangeability and ease of assembly of the device.

[0049] In some specific embodiments of this utility model, reference is made to Figure 2 As shown, the upper jacket 500 and the lower jacket 600 have the same structure, which allows the upper jacket 500 and the lower jacket 600 to be interchanged before installation, improving the interchangeability and assembly convenience of the device.

[0050] In some specific embodiments of this utility model, a plurality of connecting ear brackets 700 are also included, which are arranged around the outside of the cavity 100. (See reference) Figure 1 and Figure 2 As shown, in this embodiment, four connecting ear brackets 700 are provided, evenly arranged around the outside of the cavity 100, which can enable the device to be installed in other places and improve the applicability of the device.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A preheater characterized by, The utility model relates to a heat exchange device, including: a cavity (100) including a first outlet (110) on the upper end side and a first inlet (120) on the lower end side, the upper end of the cavity (100) is provided with an upper head (200), the upper end of the upper head (200) is provided with a first discharge port (210), the lower end of the cavity (100) is provided with a lower head (300), the lower end of the lower head (300) is provided with a first feeding port (310); a plurality of heat exchange pipes (400) penetrating the cavity (100), the plurality of heat exchange pipes (400) being communicated with the first feeding port (310) and the first discharge port (210); an upper jacket (500) arranged on the upper head (200) and forming an upper closed cavity (510) with the upper head (200), the upper closed cavity (510) being sequentially provided with a second outlet (511) and a second inlet (512) from top to bottom; a lower jacket (600) arranged on the lower head (300) and forming a lower closed cavity (610) with the lower head (300), the lower closed cavity (610) being sequentially provided with a third outlet (611) and a third inlet (612) from top to bottom.

2. A preheater according to claim 1, characterized in that The cavity (100) is further provided with a vent (130) above the first outlet (110).

3. A preheater according to claim 1, characterized in that The cavity (100) is further provided with a plurality of baffles (140) arranged at intervals, the plurality of heat exchange pipes (400) penetrating the plurality of baffles (140), and the plurality of baffles (140) separating the cavity (100) into a plurality of connected areas.

4. A preheater according to claim 3, characterised in that The cavity (100) is further provided with a plurality of connecting rods (150) arranged vertically, and the plurality of baffles (140) are arranged on the plurality of connecting rods (150).

5. A preheater according to claim 3, wherein The number of the plurality of baffles (140) is seven, nine or twelve.

6. A preheater according to claim 1, characterized in that The upper head (200) further includes a head cover (220) and a flange joint (230), the flange joint (230) being sleeved on the top of the head cover (220), the head cover (220) being provided with a head cavity (240) communicated with the cavity (100), and the first discharge port (210) being arranged on the upper end of the head cover (220) and communicated with the head cavity (240).

7. A preheater according to claim 6, characterised in that The upper head (200) and the lower head (300) are of the same structure.

8. A preheater according to claim 1, characterized in that The upper jacket (500) and the lower jacket (600) are of the same structure.

9. A preheater according to claim 1, characterized in that The utility model further includes a plurality of connecting ear holders (700) arranged around the outside of the cavity (100).

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