Multi-pipeline shell and tube air-cooled heat exchanger

Abstract

The utility model relates to the field of heat exchangers, and discloses a multi-pipeline tubular air-cooled heat exchanger which comprises a cooling box, supporting legs are fixedly connected to the four corners of the bottom of the cooling box, a smoke inlet pipe is fixedly communicated with the bottom of the front side wall of the cooling box, and a first ash discharge pipe is fixedly communicated with the bottom of the smoke inlet pipe. A first drawing baffle is inserted into the left side wall of the first ash discharging pipe, the outer wall of the first drawing baffle is in clearance fit with the inner wall of the first ash discharging pipe, a filter plate is inserted into the top of the smoke inlet pipe, the bottom end of the filter plate is located on the rear side of an upper opening of the first ash discharging pipe, and the outer wall of the filter plate is in clearance fit with the inner wall of the smoke inlet pipe. And a fan is fixedly mounted at the top of the inner wall of the smoke exhaust pipe.

Description

Technical Field

[0001] The present utility model relates to the field of heat exchangers, and specifically to a multi-pipeline shell-and-tube air-cooled heat exchanger. Background Technique

[0002] During the industrial production process, a large amount of high-temperature flue gas is generated in many technological processes. If this flue gas is directly discharged into the atmosphere, it will not only cause thermal pollution, but may also contain harmful substances, having a serious impact on the environment.

[0003] Currently, the flue gas exchanges heat with the high-temperature flue gas outside the tube through the flow of cooling water inside the tube, achieving effective cooling of the flue gas. However, dust and impurities are prone to accumulate inside the heat exchanger. If not cleaned in time, it will not only reduce the heat exchange efficiency, but may also affect the normal operation of the equipment. Content of the Utility Model

[0004] In order to overcome the above deficiencies, the present utility model provides a multi-pipeline shell-and-tube air-cooled heat exchanger.

[0005] The technical solution adopted by the present utility model:

[0006] A multi-pipeline shell-and-tube air-cooled heat exchanger includes a cooling box. Legs are fixedly connected to the four corners of the bottom of the cooling box. The bottom of the front side wall of the cooling box is fixedly communicated with a smoke inlet pipe. A dust discharge pipe I is fixedly communicated with the bottom of the smoke inlet pipe. A pull-out baffle I is inserted into the left side wall of the dust discharge pipe I. The outer wall of the pull-out baffle I is in clearance fit with the inner wall of the dust discharge pipe I. A filter plate is inserted into the top of the smoke inlet pipe. The bottom end of the filter plate is located behind the upper opening of the dust discharge pipe I. The outer wall of the filter plate is in clearance fit with the inner wall of the smoke inlet pipe. A smoke exhaust pipe is fixedly communicated with the top of the cooling box. A fan is fixedly installed at the top of the inner wall of the smoke exhaust pipe. Cooling pipes are arranged inside the cooling box. The cooling pipes are distributed in a serpentine tubular shape in a loop. The two ends of the cooling pipes are respectively fixedly communicated with a water outlet pipe and a water inlet pipe. The water outlet pipe and the water inlet pipe respectively penetrate through the left and right side walls of the cooling box.

[0007] A dust discharge pipe II is fixedly communicated with the bottom of the cooling box. A pull-out baffle II is inserted into the left side wall of the dust discharge pipe II. The outer wall of the pull-out baffle II is in clearance fit with the inner wall of the dust discharge pipe II. The filter plate is above the upper part of the dust discharge pipe I, and the filter plate obliquely inserts into the smoke inlet pipe.

[0008] Advantages of the Present Utility Model

[0009] The serpentine tubular loop-distributed cooling pipes of the present utility model increase the contact area between the hot gas and the cooling water, improving the heat exchange efficiency, enabling the hot gas to be cooled more quickly, and discharging after the heat of the hot gas is utilized. The designs of the smoke inlet pipe and the dust discharge pipes I and II facilitate the cleaning of dust and impurities, reducing the problem of heat exchange efficiency decline caused by blockage. At the same time, the setting of the filter plate further ensures the cleanliness of the hot gas entering the cooling box; the structure is simple and the operation is convenient. Description of the Drawings

[0010] Figure 1 is a schematic structural view of the present utility model;

[0011] Figure 2 is Figure 1 front view of

[0012] Figure 3 is Figure 2 sectional view taken along line A-A in

[0013] Figure 4 is a schematic structural view of the cooling pipe of the present utility model.

[0014] In all the drawings, the reference numerals are specifically as follows: 1, cooling box; 2, legs; 3, smoke inlet pipe; 4, ash discharge pipe 1; 5, pull-out baffle 1; 6, filter plate; 7, ash discharge pipe 2; 8, pull-out baffle 2; 9, smoke exhaust pipe; 10, fan; 11, cooling pipe; 12, water outlet pipe; 13, water inlet pipe. Detailed Embodiment

[0015] As Figures 1-4 shown: A multi-pipeline shell-and-tube air-cooled heat exchanger includes a cooling box 1; legs 2 are fixedly connected to the four corners of the bottom of the cooling box 1, a smoke inlet pipe 3 is fixedly communicated with the bottom of the front side wall of the cooling box 1, an ash discharge pipe 1 4 is fixedly communicated with the bottom of the smoke inlet pipe 3, a pull-out baffle 1 5 is inserted into the left side wall of the ash discharge pipe 1 4, and the outer wall of the pull-out baffle 1 5 is in clearance fit with the inner wall of the ash discharge pipe 1 4. A filter plate 6 is inserted into the top of the smoke inlet pipe 3, the bottom end of the filter plate 6 is located behind the upper opening of the ash discharge pipe 1 4, and the outer wall of the filter plate 6 is in clearance fit with the inner wall of the smoke inlet pipe 3. A smoke exhaust pipe 9 is fixedly communicated with the top of the cooling box 1, a fan 10 is fixedly installed on the top inner wall of the smoke exhaust pipe 9, a cooling pipe 11 is arranged inside the cooling box 1, the cooling pipe 11 is distributed in a serpentine tubular shape in a loop, and the two ends of the cooling pipe 11 are respectively fixedly communicated with a water outlet pipe 12 and a water inlet pipe 13, and the water outlet pipe 12 and the water inlet pipe 13 respectively penetrate through the left and right side walls of the cooling box 1.

[0016] An ash discharge pipe 2 7 is fixedly communicated with the bottom of the cooling box 1, a pull-out baffle 2 8 is inserted into the left side wall of the ash discharge pipe 2 7, and the outer wall of the pull-out baffle 2 8 is in clearance fit with the inner wall of the ash discharge pipe 2 7. The filter plate 6 is above the ash discharge pipe 1 4, and the filter plate 6 obliquely inserts into the smoke inlet pipe 3.

[0017] An ash discharge pipe 2 7 is fixedly communicated with the bottom of the cooling box 1, a pull-out baffle 2 8 is inserted into the left side wall of the ash discharge pipe 2 7, and the outer wall of the pull-out baffle 2 8 is in clearance fit with the inner wall of the ash discharge pipe 2 7.

[0018] The high-temperature flue gas first enters the cooling box 1 through the smoke inlet pipe 3. At the bottom of the smoke inlet pipe 3, there is a first ash discharge pipe 4, in which a pull-out baffle 5 is inserted. This design allows for the removal of larger particulate matter or dust that may be carried during the smoke inlet process when necessary. By pulling out the baffle 5, these impurities can be easily cleaned to prevent them from entering the cooling box and affecting the heat exchange efficiency or causing blockages. At the same time, the filter plate 6 inserted at the top of the smoke inlet pipe 3 further filters out smaller particulate matter, ensuring that the hot gas entering the cooling box is relatively clean.

[0019] The preliminarily filtered hot gas enters the interior of the cooling box 1 and exchanges heat with the cooling pipes 11 that are distributed in a serpentine tubular shape. Cooling water flows in the cooling pipes 11. The hot gas transfers heat to the cooling water, causing the cooling water to heat up while the hot gas cools down due to heat loss. This serpentine tubular design increases the contact area between the hot gas and the cooling water, improving the heat exchange efficiency.

[0020] Both ends of the cooling pipe 11 are respectively connected to the water outlet pipe 12 and the water inlet pipe 13. These two pipes penetrate the left and right side walls of the cooling box 1. The cooling water enters the cooling pipe 11 through the water inlet pipe 13, absorbs heat, and is discharged through the water outlet pipe 12 for collection and use.

[0021] The cooled flue gas is discharged through the smoke exhaust pipe 9 at the top of the cooling box 1. The fan 10 installed in the smoke exhaust pipe 9 provides power to ensure the smooth discharge of the flue gas. At the same time, a second ash discharge pipe 7 is also provided at the bottom of the cooling box 1, with a pull-out baffle 8 inserted, which is used to regularly clean the dust or impurities that may accumulate at the bottom during the cooling process, keeping the interior of the cooling box clean.

Claims

1. A multi-pipeline shell-and-tube air-cooled heat exchanger, comprising a cooling box (1), characterized in that, The four corners of the bottom of the cooling box (1) are fixedly connected with legs (2). The bottom of the front side wall of the cooling box (1) is fixedly communicated with a smoke inlet pipe (3). The bottom of the smoke inlet pipe (3) is fixedly communicated with a first ash discharge pipe (4). A pull-out baffle (5) is inserted into the left side wall of the first ash discharge pipe (4). The outer wall of the pull-out baffle (5) is in clearance fit with the inner wall of the first ash discharge pipe (4). A filter plate (6) is inserted into the top of the smoke inlet pipe (3). The bottom end of the filter plate (6) is located at the rear side of the upper opening of the first ash discharge pipe (4). The outer wall of the filter plate (6) is in clearance fit with the inner wall of the smoke inlet pipe (3). The top of the cooling box (1) is fixedly communicated with a smoke exhaust pipe (9). A fan (10) is fixedly installed at the top of the inner wall of the smoke exhaust pipe (9). A cooling pipe (11) is arranged inside the cooling box (1). The cooling pipe (11) is distributed in a serpentine tubular shape in a loop. The two ends of the cooling pipe (11) are respectively fixedly communicated with a water outlet pipe (12) and a water inlet pipe (13). The water outlet pipe (12) and the water inlet pipe (13) respectively penetrate through the left and right side walls of the cooling box (1).

2. The multi-pipeline shell-and-tube air-cooled heat exchanger according to claim 1, wherein, The bottom of the cooling box (1) is fixedly communicated with a second ash discharge pipe (7). A pull-out baffle (8) is inserted into the left side wall of the second ash discharge pipe (7). The outer wall of the pull-out baffle (8) is in clearance fit with the inner wall of the second ash discharge pipe (7). The filter plate (6) is above the first ash discharge pipe (4), and the filter plate (6) is obliquely inserted into the smoke inlet pipe (3).

Images